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WDBR1/2xxxxT PDF预览

WDBR1/2xxxxT

更新时间： 2024-11-22 14:51:39
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TTELEC /
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4页 689K
描述
Ultra low profile power resistor, push-on connectors

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WDBR1/2xxxxT 数据手册

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Ultra Low Profile Power Resistors  
WDBR Series  
Features:  
•
•
•
•
•
•
•
•
Ultra low profile thick-film on steel  
500W to 7kW peak power  
Single fixing heatsink mountable  
Ideal for dynamic braking, inrush limit and snubber circuits  
Choice of flying leads, push-on tags or solder terminaꢀons  
Low inductance design  
High isolaꢀon, even aꢂer failsafe overload fusing  
Non-flammable construcꢀon  
All Pb-free parts comply with EU Direcꢀve 2011/65/EU amended by (EU) 2015/863 (RoHS3)  
Electrical Data  
WDBR1/2  
WDBR1  
WDBR2  
WDBR3  
WDBR5  
WDBR7  
Resistance range  
Ω
2R2 - 150R 3R3 - 270R 8R2 – 820R 8R2 – 1K0  
10R – 1K5  
10R – 1K0  
Standard values  
E12 preferred. 20R, 25R and 50R are also available.  
10  
Resistance tolerance  
Pulse peak power rating1  
Power rating on heatsink2  
Power rating on fan cooled heatsink3  
TCR  
%
kW  
0.5  
160  
300  
1
2
3
5
7
W
180  
700  
200  
780  
260  
900  
270  
1000  
280  
1490  
W
ppm/°C  
<+600  
450  
Maximum element temperature  
Ambient temperature range (heatsink)  
Dielectric withstand4  
Inductance  
°C  
°C  
V (dc/ac pk)  
µH  
-55 to +200  
2500  
<3  
<4  
<5  
<6  
Notes:  
1. For details of pulse condiꢀon see Fig. 1 in Performance Data.  
2. Mounted on a 0.53°C/W heatsink with no forced air cooling, air temperature 25°C.  
3. Mounted on a 0.53°C/W heatsink with 5m/s forced air cooling, air temperature 25°C.  
4. Based on 100% producꢀon test, duraꢀon 2s minimum.  
Physical Data  
Dimensions in mm and weight without terminations in g  
t = substrate  
thickness  
L
W
±0.1  
t
ØD  
a
nom  
b
nom  
c
nom  
d
min  
Wt.  
nom  
Type  
±0.1  
±0.1 nom  
WDBR1/2 31.9  
28.1  
35.9  
40.6 0.9  
70  
70  
2.2  
3.2  
7.5  
3.2  
4.7  
13.5  
14  
3.1  
11.2  
13  
22  
23.8  
51.3  
4.3  
6.2  
5.8  
10.2  
7.4  
9.2  
1.4  
1.9  
3.8  
7.2  
6.1  
7.9  
6.5  
d = clearance  
between exposed  
conductor and  
exposed steel  
substrate  
WDBR1  
WDBR2  
49.3  
61  
12.6  
17.1  
50.8  
60.7  
181.8  
WDBR3 101.6  
WDBR5 122  
WDBR7 152.4 101.6 1.5  
5.3  
15  
Notes:  
1. The fixing hole is located centrally except on WDBR1/2 where the dimension from the edge by the terminaꢀons to the mounꢀng hole centre is 16.7mm.  
2. In addiꢀon to the central fixing hole, WDBR7 has two smaller corner holes. These are present for manufacturing purposes only and should not be used as fixing holes.  
Construcꢀon  
Construcꢀon Cross Secꢀon  
A high integrity dielectric layer is applied to  
a machined stainless-steel substrate. Thick-  
film conductor and resistor paꢁerns are  
printed and fired, then protected with a high  
temperature overglaze. The terminaꢀon  
pads are ꢀnned with solder and opꢀonal  
terminals or leads are soldered on.  
General Note  
BI Technologies IRC Welwyn  
TT Electronics reserves the right to make changes in product specificaꢀon without noꢀce or liability.  
All informaꢀon is subject to TT Electronics’ own data and is considered accurate at ꢀme of going to print.  
www.ꢁelectronics.com/resistors  
05.23  
© TT Electronics plc  
1234

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