FA1 [TTELEC]
Flameproof Metal Film Resistors; 矿用隔爆型金属膜电阻器
| 型号： | FA1 |
| 厂家： | 
TT Electronics |
| 描述： | Flameproof Metal Film Resistors |
| 文件： | 总2页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Flameproof Metal
Film Resistors
Welwyn Components
FA Series
Approval to BS CECC 40101-019
and 40101-024
•
Resistance range 0.1 ohm to 1M ohm
•
Flameproof protection
•
Electrical Data
FA025
0.5
FA05
1.0
FA1
1.5
FA94
2.0
Power rating at 70°C
Resistance range
watts
ohms
volts
volts
ppm/°C
%
0R1 to 1M
350
0R1 to 1M
350
0R1 to 1M
500
2R6 to 1M0
700
Limiting element voltage
Isolation voltage
500
500
700
1000
TCR
150
Resistance tolerance
Ambient temperature range
≤1 ohm: 5, 10 >1 ohm: 1, 2, 5
°C
-55 to 155
* Approved CECC 40101-019 / 40101-024
Power rating at 70°C
Resistance range
FX
0.25
EX
0.5
DX
1.0
CX
2.0
watts
ohms
volts
volts
ppm/°C
%
1 to 1M
250
1 to 1M
350
1 to 1M
500
10 to 100k
700
Limiting element voltage
Isolation voltage
500
700
1000
1400
**TCR
250
Resistance tolerance
1, 2, 5
Ambient temperature range
°C
-55 to 125
Standard values
E24 preferred
Thermal impedance
°C/watt
140
110
90
60
*These specificatios are identical except that BS CECC 40101-024 includes flammability tests.
**Specification TCR - actual TCR as for commercial.
Physical Data
Dimensions (mm) & Weight (g)
PCB
mounting
centres
Min.
bend
radius Wt.nom
Type
L Max
6.2
D Max
2.5
f min
21.0
19.6
23.6
29.5
d nom
0.6
FA025
FA05
FA1
10.2
12.7
20.3
19.5
0.6
1.2
1.2
1.2
0.3
0.5
1.1
1.1
d
9.0
3.6
0.8
D
L
f
14.5
13.1
5.3
0.8
FA94
5.9
0.8
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
145
Flameproof Power
Metal Film Resistors
FA Series
Welwyn Components
Construction
Marking
Resistors are colour coded with 4 bands.
IEC 62 colours are used.
The resistance element is a precisely controlled thin film of
metal alloy on a high purity ceramic core, protected by a
cement coating applied so that terminations remain
completely clear.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
This permits a well defined body length, (clean lead to clean
lead dimension L).
Flammability
Terminations
The resistors will not burn or emit incandescent particles
under any condition of applied temperature or power
overload.
Material
Solder-coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Performance Data
CECC 40101-019/40101-024
Actual Performance
Maximum Typical
Requirements
Load at commercial rating: 1000 hrs at 70°C
Load at CECC rating: 1000 hrs at 70°C
Load at 35% rated power: 1000 hrs at 125°C
Dry heat: 1000 hours at 155°C
Shelf life: 12 months at room temperature
Derating
∆R %
not specified
3
1
2
2
1
1
∆R %
∆R %
∆R %
2
0.7
0.7
0.5
not specified
1
not specified
0.5
35% of rated power at 125°C
zero at 235°C
Short term overload
∆R %
∆R %
∆R %
∆R %
∆R %
∆R %
∆R %
0.5
0.2
0.5
0.02
0.5
Climatic
2
55/125/56
2
Climatic category
55/125/56
Long term damp heat
2
0.5
Temperature rapid change
Resistance to solder heat
Vibration and bump
0.5
0.25
0.25
0.1
0.05
0.07
0.01
0.5
0.5
Packaging
Application Notes
All FA Series resistors are normally supplied tape packed ready
for loading onto automatic sequencing and insertion
machines.
1. If the resistors are to dissipate full rated power, it is
recommended that the terminations should not be
soldered closer than 4mm from the body.
Component wires will not protrude beyond the outside edge
of the tapes.
2. Due to operating temperature limitations imposed by some
pcb materials, derating may be necessary. An estimate of
the temperature rise to be expected can be calculated using
the thermal impedance figures given under Electrical Data.
Alternative packaging available by request.
Lead Formed resistors can also be supplied. Standard options
of Lancet, Radial and Goalpost forming are shown in Lead
Form Information section.
Standard Quantities Per Package
Type
FA025
FA05
FA1
FA94
Large ammo pack
5000
2500
1000
1000
c
Type
b
c
FA025/FA05
FA1
52
67
77
5
10
10
f1
f2
b
FA94
6
6
Body Location f1 – f2 ≤ 1.4 mm
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
146
相关型号：
©2020 ICPDF网 联系我们和版权申明