Thick Film High

Power Chip Resistor

WHPC Series

12.24

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

Thick Film High Power Chip Resistor

WHPC Series

0

20

40

60

80

100

120

-55

-20

15

50

85

120

155

Ambient temperature (ºC)

0

10

20

30

40

50

60

70

80

0

0.2

0.4

0.6

0.8

1

Power Dissipation (W)

Pulse Loading Capability

Test condition: 10,000 pulses at 70ºC. Single pulse condition has mean power ≤ 10% of Pr. Continuous pulse

condition has mean power = Pr.

De-Rating Curve

Temperature Rise (hotspot)

WHPC All Sizes

WHPC 1206 and 2010

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.

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

WHPC 1206

1

10

100

1.E-05

1.E-04

1.E-03

1.E-02

1.E-01

1.E+00

Pulse duration (s)

Single pulse

Continuous pulse

WHPC 2010

1

10

100

1000

1.E-05

1.E-04

1.E-03

1.E-02

1.E-01

1.E+00

Pulse duration (s)

Single pulse

Continuous pulse

1206

2010

70

0

Thick Film High Power Chip Resistor

WHPC Series

Packaging

Ordering Procedure

Example: WHPC1206 at 10 kilohms and 1% tolerance on a reel of 5000 pieces -

W H P C 1 2 0 6 – 1 0 K F T 5

Type

Size

Value (use IEC62 code)

Tolerance (use IEC62 code)

F

1%

J

5%

Packing

T5

1206, 0612

5000/reel

T4

Tape

2010, 1020, 1218, 1225

4000/reel

Standard

General Note

08.10

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.

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

Tape dimensions in mm

W

P1

P0

P2

D0

D1

E

F

A0

B0

K0

A

Type

±0.3

±0.1

±0.1

±

0.05

±0.1

±0.2

±0.1

±0.05

±0.2

±0.2

±0.1

±1

1206

8.0

4.0

4.0

2.0

1.5

1.0

1.75

3.5

1.9

3.5

0.85

9

2010

12.0

4.0

4.0

2.0

1.5

1.5

1.75

5.5

2.79

5.5

1.2

13.0

061

0508

2

8

8.0

4.0

4.0

2.0

1.5

1.75

3.5

1.6

2.4

0.85 12.5

N.A

.0

4.0

4.0

2.0

1.5

N.A

1.75

3.5

2.0

3.60

0.81 10.0

1020

12.0

4.0

4.0

2.0

1.5

N.A

1.75

5.5

2.8

5.40

0.75 13.8

1218

12.0

4.0

4.0

2.0

1.5

1.5

1.75

5.5

3.5

4.80

1.0

13.8

1225

12.0

4.0

4.0

2.0

1.5

1.5

1.75

5.5

3.5

6.70

1.0

13.8

Ordering Procedure

Example: WHPC1206-10KFT5 (WHPC1206, 10 kilohms ±1%, Pb-free)

W H P C 1

2

0

6

-

1

0 K

F T 5

1

2

3

4

5

6

1

2

3

4

5

6

Series Size

Range

Value

Tolerance

Packing

WHPC 1206

Omit for Standard

E24 = 3/4 characters

E96 = 3/4 characters

R = ohms

K = kilohms

M = megohms

D = 0.5% T5

1206, 0508, 0612

5000/reel

2010

X = Extra-high power

(0508, 0612, 1020 only)

F = ±1% T4 2010, 1020, 1218, 1225 4000/reel

0508

J = ±5%

0612

1020

1218

1225