Temperature Derating Curve

125

Ambient Temperature /

°C

75

50

25

0

100

5

5

1

0

7

5

1

-

Pulse Withstanding

Chip Resistors

PWC Series

© 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

Thermal Performance Data

09. 09

Welwyn Components

Application Note

PWC resistors themselves can operate at a maximum temperature of 155°C. For soldered resistors, the joint temperature should not exceed 110°C. This

condition is met when the stated power levels at 70°C and recommended pad and trace areas are used. Pad and trace area is defined as the total area of

the solder pad plus all copper trace within two squares of the edge of the solder pad. Allowance should be made if smaller areas of copper are used.

A full Application Note on the PWC Series is available.

Packaging

0603, 0805 and 1206 resistors are supplied on 8mm carrier tape and 2010 and 2512 resistors are supplied on 12mm carrier tape,

all on 7 inch reels as per IEC 286-3.

Ordering Procedure

This product has two valid part numbers:

Pulse Withstanding

Chip Resistors

PWC Series

Ordering Procedure

This product has two valid part numbers:

European (Welwyn) Part Number: PWC2512-2K0JI (2512, 2 kilohms ±5%, Pb-free)

P W C

2

5

1

2

-

2

K

0

J

I

1

2

3

4

5

6

USA (IRC) Part Number: PWC-PWC2512LF-2K00-J

(2512, 2 kilohms ±5%, Pb-free)

P W C

-

P W C

2

5

1

2

L

F

-

2

K 0

0

-

J

1

2

3

4

5

6

1

2

3

4

5

6

Type Size

Anti-Sulphur

Value

Tolerance Termination & Packing

PWC 0603 Omit for standard E24 = 3/4 characters D = ±0.5%

AS = Anti-sulphur E96 = 3/4 characters

F = ±1%

0805, 1206,

2010

3000/reel

R = ohms

J = ±5%

K = kilohms

2512

1800/reel

M = megohms

All sizes

1000/reel

1

2

3

4

5

6

Family Model

Size

Termination

Value

Tolerance

Packing

PWC

PWC

Omit for SnPb

D = ±0.5%

Plastic tape

LF = Pb-free

F = ±1%

1206, 2010

3000/reel

J = ±5%

2512

1800/reel

I = Pb-free, Standard,

PB = SnPb, Standard

T1 = Pb-free, 1K reel

E24 = 4 characters

E96 = 4 characters

R = ohms

K = kilohms

M = megohms

2512

2010

1206

0805

1206

2010

2512

0603

5000/reel

09.18

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.ttelectronics.com/resistors

BI Technologies IRC Welwyn