CMF-SD35A0 [BOURNS]
RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, 35ohm, SURFACE MOUNT, CHIP, ROHS COMPLIANT;
| 型号： | CMF-SD35A0 |
| 厂家： | 
BOURNS ELECTRONIC SOLUTIONS |
| 描述： | RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, 35ohm, SURFACE MOUNT, CHIP, ROHS COMPLIANT |
| 文件： | 总3页 (文件大小：326K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Features
Applications
Used as a secondary overcurrent protection
device in:
■ Two resistance-matched PTCs in a
ceramic housing
■ Aids compliance with:
- ITU-T K.20/21/45
- Telcordia GR-1089-CORE
- UL 60950, 3rd Ed.
■ Customer Premise Equipment (CPE)
■ Central Office (CO)
■ Access equipment
■ Narrow resistance tolerance
■ RoHS compliant*
CMF-SD Series - Telecom CPTC Resettable Fuses
Electrical Characteristics
Induction
Voltage
Withstand
Rated
Resistance
(RN)
Resistance
Matching
In Housing
Time to Trip
@ Imax/
230 VAC
Rated
Voltage
Hold
Current
Trip
Current
Imax @
230 VAC
Model
VAC
Volts
Ohms Tolerance
Ohms
Amps @ 25 °C Amps @ 25 °C
Amps
Seconds
CMF-SD25
CMF-SD35
CMF-SD35A
CMF-SD50
CMF-SD50A
600
600
600
600
600
230
230
230
230
230
25
35
35
50
50
20 ꢀ
20 ꢀ
20 ꢀ
20 ꢀ
20 ꢀ
0.5
0.5
0.5
0.5
0.5
0.130
0.100
0.100
0.090
0.090
0.260
0.200
0.200
0.190
0.190
2.8
3
< 0.3
< 0.2
< 0.2
< 0.1
< 0.1
2.5
3
3
Product Dimensions
Recommended Pad Layout
B
A
CMF-SD25/
CMF-SD35/
Dim. CMF-SD50
CMFSD35A/
CMF-SD50A
1
9.00
(.354)
7.15
MAX.
(.281)
MAX.
A
2
B
A
10.80
MAX.
8.50
MAX.
(.335)
3
G
B
C
D
E
F
(.425)
F
4
10.20
(.402)
8.10
MAX.
(.319)
MAX.
F
D
E
4.88 - 5.28
(.192 - .208)
3.25 - 3.65
(.128 - .144)
C
MM
E
DIMENSIONS =
(INCHES)
H
2.41 - 2.61
(.095 - .103)
2.41 - 2.61
(.095 - .103)
D
1
2
4
C
0.5
0.5
MAX.
(.020)
MAX.
(.020)
Packaging options:
BULK:
640 pcs. per bag
3
TAPE & REEL: CMF-SD25, CMF-SD35 & CMF-SD50 = 400 pcs. per reel;
CMF-SD35A & CMF-SD50A = 500 pcs. per reel
CMF-SD25/
Typical Part Marking
How to Order
CMF-SD35/ CMF-SD35A/
Dim. CMF-SD50
CMF-SD50A
8.00
Represents total content. Layout may vary.
CMF - SD 35 A - 0
10.0
A
B
C
D
E
MANUFACTURER'S
TRADEMARK
(.394)
(.315)
Product Designator
Style
8.80
(.346)
7.05
(.278)
SD = Surface Mount Dual Package
BI-WEEKLY
DATE CODE:
WEEK 13-14 = G
3.20
(.126)
2.75
(.108)
356G
Rated Resistance (RN)
25, 35, 50 (25, 35, 50 Ohms)
PART
IDENTIFICATION:
25 = CMF-SD25
2.00
(.079)
2.00
(.079)
Reduced Footprint and Height Option
YEAR CODE:
35 = CMF-SD35
6 = 2006
Packaging Options
- 0 = Bulk Packaging
- 2 = Tape & Reel
50 = CMF-SD50
35A = CMF-SD35A
50A = CMF-SD50A
2.60
(.102)
2.51
(.099)
5.00
3.45
(.197)
(.136)
F
7.60
(.299)
5.95
(.234)
G
H
10.0
(.394)
8.15
(.321)
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CMF-SD Series - Telecom CPTC Resettable Fuses
Solder Reflow Recommendations
Preheating
Soldering
Cooling
300
250
200
150
100
50
Solder reflow
•
•
Recommended reflow methods: IR, vapor phase oven, hot air oven.
Devices are not designed to be wave soldered to the bottom side of the
board.
•
•
•
Gluing the devices is not recommended.
Recommended maximum paste thickness is 0.25 mm (.010 inch).
Devices can be cleaned using standard industry methods and solvents.
Note:
If reflow temperatures exceed the recommended profile, devices may not
meet the performance requirements.
Rework
•
•
A device should not be reworked.
0
160–220
120
10–20
Time (seconds)
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
Reliable Electronic Solutions
CMF-SD SERIES, REV. E, 05/22/07
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
CMF-SD Series Tape and Reel Specifications
CMF-SD25-2
CMF-SD35-2
CMF-SD50-2
CMF-SD35A-2
CMF-SD50A-2
Tape Dimensions per EIA 481-2
24.0 +0.30/-0.10
16.0 0.10
(0.945 +0.012/-0.004 )
(0.630 0.004 )
W
4.00 0.10
(0.157 0.004)
4.00 0.10
(0.157 0.004)
P
0
16.0 0.10
(0.630 0.004)
12.0 0.10
(0.472 0.004)
P
1
2.00 0.10
(0.079 0.004)
2.00 0.10
(0.079 0.004)
P
2
10.2 0.10
(0.402 0.004)
8.35 0.10
(0.329 0.004)
A
0
9.0 0.10
(0.354 0.004)
8.30 0.10
(0.327 0.004)
B
0
1.5 +0.10/-0.0
(0.059 +0.004/-0.0)
1.5 +0.10/-0.0
(0.059 +0.004/-0.0)
D
0
11.5 0.10
(0.453 + 0.004)
7.5 0.10
(0.295 + 0.004)
F
1.75 0.10
(0.069 0.004)
1.75 0.10
(0.069 0.004)
E
1
0.50
(0.020)
0.50
(0.020)
T max.
1
11.0 0.10
(0.433 0.004)
8.80 0.10
(0.346 0.004)
K
0
D
CMF-SD25-2
P
P
E
T
2
0
CMF-SD35-2
CMF-SD50-2
F
W
330 -2/+0
(12.99 -.079/+0)
DIA.
B
0
P
A
K
0
0
16.4 +2.0/-0
(.646 +.079/-0)
13.2 +0.2/-0
MAX.
22.4
(.882)
5°
(.520 +.008/-0
100 1.5
(3.94 .059)
DIA.
0.50
(.020)
D
CMF-SD35A-2
CMF-SD50A-2
P
2
P
E
0
D
1
F
330 -2/+0
(12.99 -.079/+0)
DIA.
W
B
0
P
K
1
A
0
16.4 +2.0/-0
(.646 +.079/-0)
MAX.
22.4
(.882)
20 °
8 °
K
0
13.2 +0.2/-0
(.520 +.008/-0
9.1
(.358)
100 1.5
(3.94 .059)
DIA.
MM
(INCHES)
UNIT =
4.5
(.177)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
A
0
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