BDB00-AP0003 [3M]

INTERCONNECTION DEVICE;
BDB00-AP0003
型号: BDB00-AP0003
厂家: 3M ELECTRONICS    3M ELECTRONICS
描述:

INTERCONNECTION DEVICE

文件: 总8页 (文件大小:157K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Fiber Optic Cable Assemblies  
Cable assemblies used in patch  
panels (fiber distribution units)  
are an essential interface between  
fiber outside plant cable and  
optical equipment.  
Cable assemblies also provide  
interconnect capabilities between  
equipment and distribution panels  
and equipment to equipment.  
3M offers pigtails, jumpers,  
Accuribbon* fanouts, and pre-  
connectorized multi-fiber cable  
assemblies.  
S t a n d a rd Ca b le As s e m b lie s  
A single-mode or multimode optical  
fiber cable terminated on both ends  
with a connector. 3M factory  
mounting capabilities assure the  
highest transmission quality.  
Hyb rid Ca b le As s e m b lie s  
A combination of two different  
connector designs terminated on  
one fiber optic cable. These hybrids  
offer ease of connectivity between  
transmission and receiver equipment,  
as well as other components which  
incorporate different connector  
designs.  
Du p le x Ca b le As s e m b lie s  
290  
A combination of four connectors  
P re -Co n n e c t o rize d  
Mu lt i-Fib e r Ca b le  
mounted on duplex fiber optic cable.  
P ro d u c t Re fe rra l  
Ge n e ra t o r  
Duplex cable assemblies offer ease of  
3M offers a variety of cables  
terminated at one or both ends  
with the connector of your choice  
for easy installation in vault to  
frame applications.  
connectivity between transmission and  
receiver equipment incorporating dual  
transmission paths.  
Fibrlok™ II Optical Splicing pg. 162  
Fibrlok Multi-Fiber Optical  
P ig t a ils  
Splicing  
pg. 166  
pg. 184  
pg. 140  
3M can provide pigtails (i.e., one  
connectorized end only) on jacketed  
and unjacketed fiber optic cable.  
Ap p lic a t io n S p e c ific  
As s e m b lie s  
Fiber Distribution Units  
Connectors/Couplings  
Photodyne Test Equipment pg. 200  
Our capabilities include termination  
of various styles of cables and  
connectors for those customers  
with unique requirements.  
Fa n o u t s  
ST* Duplex Clips  
pg. 160  
pg. 192  
The 12-fiber Accuribbon* Fanout is  
pre-connectorized for easy termination  
in the fiber distribution frame by  
mechanical or fusion splicing.  
Customer Premise Units  
132  
Cable Assembly  
Specifications  
294  
295  
296  
297  
291  
292  
293  
S C  
S C  
S T*  
S T*  
FC/P C  
FC  
Bic o n ic  
Co n n e c t o r  
An g le d  
P u s h -P u ll  
An g le d  
2 .0 m m &  
2 .1 5 m m  
k e y  
Market code  
Single-mode  
N/A  
Multimode  
Attenuation 1300 (dB)  
Single-mode  
Mean 0.20,  
sigma 0.1  
Mean 0.15,  
sigma 0.05  
Mean 0.20,  
sigma 0.1  
Mean 0.20,  
sigma 0.1  
Mean 0.15,  
sigma 0.05  
Mean 0.20,  
sigma 0.1  
Mean 0.15,  
sigma 0.05  
Mean 0.20  
sigma 0.1  
Mean 0.35,  
sigma 0.15  
Mean 0.5,  
sigma 0.15  
Multimode  
Mean 0.15,  
sigma 0.05  
Reflection (dB)  
Single-mode  
-55,  
Mean -58  
-25,  
-70,  
Mean -80  
-55,  
Mean -58  
-25,  
-55,  
Mean -58  
-25,  
-70,  
Mean -80  
-30 typical  
-14 typical  
Multimode  
-25,  
Mean -27  
Mean -27  
Mean -27  
Mean -27  
Connection durability (dB)  
Single-mode  
Multimode  
<0.2 change  
<0.2 change  
<0.2 change  
<0.1 change  
<0.2 change  
<0.2 change  
<0.2 change  
<0.2 change  
<0.2 change  
<0.2 change  
<0.2 change  
Number of matings  
Single-mode  
Multimode  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
1000  
Operational temperature  
Connector only  
(cable dependent)  
Single-mode  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 80°C  
-40° to 80°C  
Multimode  
-10° to 40°C  
Storage temperature  
Single-mode  
Multimode  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
-40° to 85°C  
Ma t e ria l  
Connector plug  
70% Silica  
filled epoxy  
Connector housing  
Connector ferrule  
Engineering  
Thermoplastic Thermoplastic  
Engineering  
Nickel  
plated zinc  
Engineering  
Engineering  
Engineering  
Engineering  
Thermoplastic Thermoplastic Thermoplastic Thermoplastic  
8° angle  
8° angle  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Alignment sleeve  
Single-mode  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
Zirconia  
ceramic  
70% Silica  
filled epoxy  
70% Silica  
filled epoxy  
Multimode  
Metal  
Metal  
Boot  
Polyester  
Polyester  
Estane®  
Santoprene  
Polyester  
Polyester  
Estane®  
Backbone  
Single-mode  
Multimode  
Aluminum  
Aluminum  
Aluminum  
Zinc alloy  
Zinc alloy  
Polymer  
Aluminum  
Aluminum  
Aluminum  
Aluminum  
Aluminum  
Flame retardant  
UL-94 V-O  
UL-94 V-O  
UL-94 V-O  
UL-94 V-O  
UL-94 V-O  
UL-94 V-O  
UL-94 V-O  
133  
S C Ca b le As s e m b lie s  
SC Cable Assemblies are designed for the most advanced fiber optic systems  
requiring exceptional stability, low reflections (single-mode) and high density. The  
cable assemblies can be converted from simplex to duplex quickly and easily in  
the field using the SC duplex clip with no additional tools.  
298  
S C Re fle c t io n (d B)  
S C In s e rt io n Lo s s (d B)  
S C 8 ° An g le d P C Ca b le As s e m b lie s , S in g le -m o d e  
In order to meet the system requirements of the cable TV (CATV) industry and  
other high-speed digital systems, 3M has developed a single-mode SC 8° angle-  
polished connector to minimize reflections to a mean of -80 dB.  
299  
Fe a t u re s — Be n e fit s  
S C 8 ° An g le d P C Ca b le As s e m b lie s  
8° Angle polish on ferrule  
(patents issued US 5,351,327,  
US 5,458,582, US 5,321,784)  
Low reflections, mated or unmated;  
intermateable with other SC 8° angled  
connectors meeting industry standards  
Contacting fibers  
Low, stable insertion loss  
Isolated ferrule design  
Push-pull mating (SC)  
Zirconia ceramic ferrule  
Thermoplastic shell  
Not affected by cable disturbance  
High density, repeatable connections  
Durable, compliant material  
Corrosion resistant  
30  
25  
20  
15  
10  
5
20  
15  
10  
5
0
0
-65- 66-67-68  
-84  
-85  
-69 -70 -72-73  
-71  
-75 -76-77-78  
-81-82-83  
-79-80  
-74  
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6  
S C 8 ° An g le d In s e rt io n Lo s s (d B)  
S C 8 ° An g le d Re fle c t io n (d B)  
134  
S T* Co n n e c t o r Ca b le As s e m b lie s , Ba yo n e t  
The Bayonet ST* cable assemblies, available in both multimode and single-mode,  
are supplied with a high quality PC finish on zirconia ceramic ferrules. A PC  
finish is a convex radius finish on the fiber and ferrule of the connector resulting  
in a positive contact of two mated fibers. The PC zirconia ferrule assures low  
attenuation and reflected power.  
The ST* product line provides high repeatability and low light loss for  
premises, LAN and telco applications. The 3M connector design is compatible  
with the Systimax* components and other ST* connector products.  
300  
35  
30  
25  
10  
20  
8
6
4
15  
10  
5
2
0
S T* S M In s e rt io n Lo s s (d B)  
0
0.1  
0.2  
0.3  
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9  
S T* Mu lt im o d e In s e rt io n Lo s s (d B)  
S T* S M Re fle c t io n (d B)  
S T* Co n n e c t o r Mu lt im o d e Ca b le As s e m b lie s , P u s h -P u ll  
The Push-Pull ST* cable assemblies have been designed to incorporate a push-pull  
latching mechanism that allows the connectors to be inserted straight into the  
coupling using the housing or boot. The connector is also resistant to lateral and  
axial pull for increased reliability. The cable assemblies can be converted from  
simplex to duplex quickly and easily in the field using the Push-Pull Duplex Clip  
with no additional tools or training.  
35  
30  
25  
20  
15  
10  
5
301  
0
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9  
S T* P u s h P u ll S M In s e rt io n Lo s s (d B)  
135  
FC/P C Ca b le As s e m b lie s  
The FC/PC factory polished cable assemblies incorporate 3M’s pre-radiused PC  
zirconia ceramic technology to provide high optical performance and minimize  
reflected power to -55 dB.  
302  
FC/P C In s e rt io n Lo s s (d B)  
FC/P C Re fle c t io n (d B)  
FC/P C An g le d Ca b le As s e m b lie s  
In order to meet the system requirements of the cable TV(CATV) industry and  
other high-speed digital systems, 3M has developed a single-mode FC 8° angle-  
polished connector to minimize reflections to a mean of -80 dB.  
Worldwide, there are two defacto standards for FC/APC connectors; a 2.0 mm  
nominal connector key and a 2.15 mm connector key are in widespread use. Long  
term, it is expected that the 2.0 mm nominal connector key will dominate the  
marketplace.  
Specially designed, tight key couplings are available for both the 2.0 mm and  
2.15 mm connectors which offer premium optical performance. The angled end  
finishes of the connectors could also mate with the standard FC couplings with  
an additional 0.15 dB insertion loss.  
FC/PC Angled Cable Assembly  
303  
Fe a t u re s — Be n e fit s  
FC/P C An g le d Ca b le As s e m b lie s  
8° angle polish on ferrule  
Low reflections, mated or unmated  
(patents issued US 5,351,327,  
US 5,458,582, US 5,321,784)  
intermateable with other FC/PC 8° angled  
connectors meeting industry standards  
Contacting fibers  
Low, stable insertion loss  
Durable, compliant material  
Zirconia ceramic ferrule  
30  
25  
20  
15  
10  
5
20  
15  
10  
5
0
0
-65- 66-67-68  
-84  
-85  
-69 -70 -72-73  
-71  
-75 -76-77-78  
-81-82-83  
-79-80  
-74  
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6  
FC/P C 8 ° An g le d Re fle c t io n (d B)  
FC/P C 8 ° An g le d In s e rt io n Lo s s (d B)  
136  
Bic o n ic Ca b le As s e m b lie s  
Biconic cable assemblies have been widely used throughout the telecommunications  
industry, featuring a conical design that minimizes connector wear and provides a  
dust-free, moisture-proof connection.  
304  
Optical Cable Specifications for Cable Assemblies  
Co d e  
Ve n d o r Nu m b e r Ca b le OD J a c k e t Lo s s /m a x Ba n d  
Be n d  
ra d iu s  
(cm)  
Te n s ile  
lo a d  
Ca b le  
w e ig h t  
(kg/km)  
o f  
n o m in a l  
c o lo r 1300/1550 nm w id t h  
fib e rs  
(mm)  
(dB/km)  
1300 nm  
(MHz-km)  
(Install N)  
S in g le -m o d e  
Unjacketed  
AU  
Siecor  
AT&T  
1
1
0.9  
0.9  
White  
1.0/.75  
0.5/0.3  
N/A  
N/A  
5.0  
3.8  
3
6
0.9  
0.6  
MQ  
Yellow  
Jacketed  
AT  
Siecor  
AT&T  
Siecor  
1
1
2
2.9  
2.9  
Yellow  
Yellow  
Yellow  
1.0/.75  
0.5/0.3  
1.0/.75  
N/A  
N/A  
N/A  
5.0  
3.8  
5.0  
500  
220  
7.8  
6.2  
MK  
BW  
2.9 x 5.8  
1000  
14.7  
Multi-fiber (900 µm sub-units)  
EA  
EB  
GY  
EC  
ED  
EE  
Siecor  
Siecor  
Siecor  
Siecor  
Siecor  
Siecor  
4
5.2  
5.2  
Yellow  
Yellow  
Yellow  
Yellow  
Yellow  
Yellow  
1.0/.75  
1.0/.75  
1.0/.75  
1.0/.75  
1.0/.75  
1.0/.75  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
7.5  
7.5  
1000  
1000  
1800  
2700  
4000  
5500  
23  
23  
6
12  
24  
36  
72  
7.0  
10.5  
15.9  
22.4  
32.3  
53  
10.6  
14.9  
21.5  
122  
191  
320  
Mu lt im o d e  
50/125 µm  
ZK  
Siecor  
Siecor  
Siecor  
1
1
2
0.9  
2.9  
Orange  
Orange  
Orange  
4.0/NA  
4.0/NA  
4.0/NA  
400  
400  
400  
5.0  
5.0  
5.0  
6
0.9  
7.8  
ZJ  
500  
1000  
AX  
2.9 x 5.8  
15.6  
62.5/125 µm  
AP  
Siecor  
Siecor  
Siecor  
1
1
2
0.9  
2.9  
Orange  
Orange  
Orange  
2.0/NA  
2.0/NA  
2.0/NA  
500  
500  
500  
5.0  
5.0  
5.0  
6
0.9  
7.8  
AF  
500  
1000  
AQ  
2.9 x 5.8  
15.6  
Notes:  
*1. Cables available in assemblies only.  
2. All cables are Riser Rated (OFNR) and meet requirements of UL 1666.  
3. All Jacketed Simplex and Duplex cable are 3M private labeled.  
137  
S t a n d a rd J u m p e rs a n d P ig t a ils Ca b le As s e m b lie s Ord e rin g Ch a rt  
(S im p le x a n d Du p le x )  
In five easy steps, you can accurately specify your cable assembly.  
Establish 3M part numbers by using the following codes.  
S t e p 5  
S t e p 1  
Ca b le Le n g t h s  
Ca b le As s e m b ly In fo rm a t io n  
0001  
02.5  
0003  
0005  
0010  
1 meter  
A
B
Single-mode 3M supplied connector and cable  
Multimode 3M supplied connector and cable  
2.5 meters  
3 meters  
5 meters  
10 meters  
S t e p 2  
S t e p 4  
Co n n e c t o r En d # 1 In fo rm a t io n  
Single-mode  
AA Biconic  
Ca b le In fo rm a t io n  
AM ST* (Bayonet)  
DA SC, Standard Density  
DG SC, High Density  
Siecor Single-mode  
Cable/Corning Fiber  
AT Jacketed  
AU Unjacketed  
BW Jacketed duplex  
EP  
SC 8°Angle, Standard Density  
FC/PC  
FC 8° Angle (2.15 mm Key)  
FC 8° Angle (2.0 mm Key)  
EN  
EU  
EX  
S t e p 3  
AT&T Single-mode  
Fiber and Cable  
MK Jacketed  
Co n n e c t o r En d # 2 In fo rm a t io n  
Multimode  
AB Biconic  
AN ST (Bayonet)  
DB SC, Standard Density  
Use same codes as End #1  
MQ Unjacketed  
00 Pigtail  
Siecor Multimode  
Cable/Corning Fiber  
ZK 50/125 Unjacketed  
EK  
Push/Pull ST*  
EM FC/PC  
ZJ  
50/125 Jacketed  
NOTE: All ST*, SC and FC connectors  
have PC finish.  
AX 50/125 Jacketed duplex  
AP 62.5/125 Unjacketed  
AF 62.5/125 Jacketed  
AQ 62.5/125 Jacketed duplex  
For additional cables, including duplex, multi-fiber or plenum jacket, please call 800/426 8688. Push #1 for ordering department  
or push #3 for literature.  
NOTE: Jacketed cables are 3 mm OD unless otherwise stated. Pigtails must be ordered in multiples of two.  
Example: Single-mode  
FC 8° angle (2.15 mm key) to FC 8° angle (2.15 mm key)  
AT&T jacketed cable, 10 meters  
A
E U E U  
M K 0 0 1 0  
(AEUEU-MK 0010)  
138  
P re -Co n n e c t o rize d  
Mu lt i-Fib e r Ca b le  
P re -c o n n e c t o rize d , Mu lt i-Fib e r Ca b le As s e m b ly Ord e rin g Ch a rt  
The part number for the pre-connectorized multi-fiber cable is determined using  
a system similar to the system used for other 3M cable assemblies.  
As a leader in the fiber optic  
cable assembly market,  
3M continues to fulfill  
the changing needs of the  
industry with the provision  
of pre-terminated multi-fiber  
cables. Pre-connectorized  
cable assemblies are used  
in applications such as  
intra-building networks and  
military field applications.  
Pre-connectorized multi-  
fiber cables are factory  
terminated at one or both  
ends with the customer’s  
choice of connectors. These  
single-mode assemblies are  
tested to meet specific fiber  
connector requirements.  
Ca b le Le n g t h s  
0010 10 meters  
20.5  
20.5 meters  
0025 25 meters  
Ca b le As s e m b ly In fo rm a t io n  
A
Single-mode 3M supplied connector and cable  
Ca b le 1  
Single-mode  
Siecor, 900 µm sub-units  
EA 4 fiber  
EB 6 fiber  
GY 12 fiber  
EC 24 fiber  
ED 36 fiber  
EE 72 fiber  
Co n n e c t o r En d # 1  
Single-mode  
AA Biconic  
AM ST* (Bayonet)  
DA SC, Standard Density  
DG SC, High Density  
EP SC 8° Angle, Standard Density  
EN FC/PC  
EU FC 8° Angle (2.15 mm Key)  
EX FC 8° Angle (2.0 mm Key)  
Siecor, 2.4 mm sub-units  
GJ 6 fiber  
FW 12 fiber  
Co n n e c t o r En d # 2  
Use same codes as End #1  
NOTE: All ST*, SC and FC connectors  
have PC finish.  
00  
Pigtail  
All cables listed are OFNR riser-rated. For plenum cable, please call Customer Service at 800/426 8688.  
Pre-connectorized multi-fiber pigtail assemblies must be ordered in multiples of two for the same cable code.  
Ac c u rib b o n Fa n o u t Ord e rin g Ch a rt  
Ac c u rib b o n * Fa n o u t  
The product number for the Accuribbon Fanout is determined using  
a system similar to the system used for other 3M cable assemblies.  
The Accuribbon* Fanout is a  
pre-connectorized assembly  
which can be mechanically  
or fusion spliced to 12-fiber  
ribbon for termination in the  
fiber distribution frame. The  
12-fiber Accuribbon* fanout  
is separated into individual  
fibers which are protected  
with 1.7 mm PVC tubing and  
terminated with connectors.  
The Accuribbon fiber  
is transitioned through a  
small plastic module. The  
terminated ends of the fibers  
are spaced 24 or 48 inches  
from the fanout module. The  
length of Accuribbon fiber  
extending from the module  
is specified by the customer.  
The Fibrlok™ 2612  
Rib b o n Le n g t h  
from module  
0001 1 meter  
02.5  
Ca b le As s e m b ly In fo rm a t io n  
2.5 meters  
A
B
Single-mode 3M supplied connector and cable  
Multimode 3M supplied connector and cable  
Ca b le Co d e fo r  
1 2 -Fib e r Ac c u rib b o n  
Co n n e c t o r Typ e  
BR 8/125 µm Single-mode  
BS 62.5/125 µm Multimode  
Single-mode  
AA Biconic  
AM ST* (Bayonet)  
DA SC, Standard Density  
DG SC, High Density  
EP SC 8° Angle, Standard Density  
EN FC/PC  
EU FC 8° Angle (2.15 mm Key)  
EX FC 8° Angle (2.0 mm Key)  
A
B
24" Pigtails (0.6 m)  
48" Pigtails (1.2 m)  
Multimode (125)  
AA Biconic  
AN ST (Bayonet)  
EK Push/Pull ST  
DB SC  
F
Fanout  
Multi-Fiber Optical Splice is  
available for fast mechanical  
splicing of ribbon or  
Example: Single-mode FC/PC fanout with 24" (0.6 m)  
pigtails and 2 meters (6.5 feet) of ribbon  
EM FC/PC  
ribbonized fiber. This  
NOTE: All ST, SC and FC connectors  
have PC finish.  
splicing system is ideal  
A
E
N
F
A
B
R
0
0
0
2
for Accuribbon fanout  
(AENFA-BR0002)  
installations with a minimum  
investment in time and tooling.  
NOTE: Accuribbon fanouts must be ordered in multiples of two for the same cable code.  
139  

相关型号:

SI9130DB

5- and 3.3-V Step-Down Synchronous Converters

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135LG-T1-E3

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9135_11

SMBus Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9136_11

Multi-Output Power-Supply Controller

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130CG-T1-E3

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130LG-T1-E3

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9130_11

Pin-Programmable Dual Controller - Portable PCs

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137DB

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9137LG

Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY

SI9122E

500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

Warning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY