Datasheet > WDBR3

WDBR3

更新时间： 2024-11-05 05:55:15

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Ultra low profile thick-film on steel

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Ultra Low Profile

Power Resistors

WDBR Series

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 lead, push-on or solder terminations

Low inductance design

High isolation, even after failsafe overload fusing

RoHS compliant, non-flammable construction

Electrical Data

WDBR1/2

ohms 22, 47, 100

WDBR1 WDBR2 WDBR3 WDBR5

WDBR7

47, 100, 150

Resistance range

12, 22, 47, 100, 150

Resistance tolerance

Pulse power rating ¹

Power rating on heatsink ²

0.5

1.5

180

700

2.0

200

780

3.5

260

900

5.0

270

1000

7.0

280 ⁴

1490 ⁴

160

Power rating on fan-cooled heatsink ³

300

TCR

ppm/°C

°C

V (dc/ac peak)

+500 to +600

Maximum element temperature

Dielectric withstand

Inductance (typical)

Notes:

365

2500

μH

1. For details of pulse condition 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. Limited by the solder type; the rating can be improved for non-standard parts by using HMP solder.

Physical Data

Dimensions in mm, weight without terminations in g

L ±0.1 W ±0.1 t ±0.1 ØD nom a nom b nom c nom Wt. nom

WDBR1/2

31.9

28.1

2.2

3.2

7.5

3.1

4.3

6.5

WDBR1

WDBR2

WDBR3

WDBR5

WDBR7

49.3

35.9

40.6

3.2

4.7

11.2

13.0

22.0

23.8

51.3

6.2

5.8

12.6

17.1

50.8

60.7

181.8

0.9

101.6

122

13.5

14.0

15.0

10.2

7.4

5.3

Substrate thickness = t

Fixing hole is located centrally

152.4 101.6 1.5

9.2

Construction

A high integrity dielectric layer is applied to a machined

stainless steel substrate. Thick-film conductor and resistor

patterns are printed and fired, then protected with a high

temperature overglaze. The termination pads are tinned with

Pb-free solder and optional terminals or leads are soldered on.

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 test data and is considered accurate at time of print.

Ó We lwyn Compone nts Limite d

Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com

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与WDBR3相关器件

型号	品牌	获取价格	描述	数据表
WDBR3ULxxxxI	TTELEC	获取价格	Ultra low profile power resistor, UL508, solder pads
WDBR3ULxxxxL	TTELEC	获取价格	Ultra low profile power resistor, UL508, flying leads
WDBR3xxxxI	TTELEC	获取价格	Ultra low profile power resistor, solder pads
WDBR3xxxxL	TTELEC	获取价格	Ultra low profile power resistor, flying leads
WDBR3xxxxT	TTELEC	获取价格	Ultra low profile power resistor, push-on connectors
WDBR5	TTELEC	获取价格	Ultra low profile thick-film on steel
WDBR5ULxxxxI	TTELEC	获取价格	Ultra low profile power resistor, UL508, solder pads
WDBR5ULxxxxL	TTELEC	获取价格	Ultra low profile power resistor, UL508, flying leads
WDBR5xxxxI	TTELEC	获取价格	Ultra low profile power resistor, solder pads
WDBR5xxxxL	TTELEC	获取价格	Ultra low profile power resistor, flying leads

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