Pulse Withstanding

Chip Resistors

PWC Series

Excellent pulse withstand performance

Improved working voltage

Improvedpowerrating

Standard chip sizes (0805 to 2512)

Custom designs available

Anti-sulphurversionavailable

Pulse Withstanding

Chip Resistors

PWC Series

Excellent pulse withstand performance

Improved working voltage

Improved power rating

Standard chip sizes (0805 to 2512)

Custom designs available

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.

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

Electrical Data

07. 08

A subsidiary of

TT electronics plc

37

Physical Data

Construction

Thick film resistor material, overglaze and organic protection

are screen printed on a 96% alumina substrate. Wrap-around

terminations have an electroplated nickel barrier and solder

coating, this ensures excellent ‘leach’ resistance properties

and solderability.

Marking

Components are not marked. Reels are marked with type,

value, tolerance, date code and quantity.

Solvent Resistance

The body protection is resistant to all normal industrial

cleaning solvents suitable for printed circuits.

Dimensions of PWC resistors are given below in mm and weight in g

L

W

T max

A

B

C

Wt.

0805

Size

Power @70°C

W

Resistance range

Ohms

Tolerance

%

LEV

V

TCR

ppm/°C

Operating temperature

°C

Thermal Impedance

°C/W

Pad / trace area *

Values

0.25

150

200

400

500

1R0 to 10M

10R to 1M: 0.5, All values: 1, 5

<10R:200

≥10R:100

E96 preferred - other values to special order

See graphs – full application note available on request

-55 to +155

0.33

0.5

0.75

1.5

2

1

220

160

145

80

55

40

70

40

50

125

60

100

500

250

1206

2010

2512

2.0±0.3

1.25±0.2

0.6

0.3±0.15

0.9 min

0.3±0.1

0.009

1206

0805

3.2±0.4

1.6±0.2

0.7

0.4±0.2

1.7 min

0.4±0.15

0.020

2010

5.1±0.3

2.5±0.2

0.8

0.6±0.3

3.0 min

0.6±0.25

0.036

2512

6.5±0.3

3.2±0.2

0.8

0.6±0.3

4.4 min

0.6±0.25

0.055

Pulse Capability

T

W

C

A

A

L

B

Wrap-around terminations

(3 faces)

*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB

Welwyn Components

Note that anti-sulphur version parts below 100R are

produced in flip-chip format with the resistor element on

the underside.

Make Possible

Resistors

AllPb-freepartscomplywithEUDirective2011/65/EU(RoHS2)

07.14

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronicsresistors.com