www.vishay.com

Document Number: 60076

80

Revision: 24-Feb-11

PHP

Vishay Thin Film

High Power Thin Film Wraparound Chip Resistor

Notes

• Chip surface temperature measured using FLIR A40 thermal

imaging system with an approximate test card surface

temperature of 85 °C.

• Thermal imaging was conducted under ambient conditions

resulting in a steady state test card surface temperature of 85 °C

over the full range of power levels.

• Thermal imaging and load life testing was conducted mounting

one device to 2" x 3" test cards with 2.5 mil copper plating on

both surfaces. Thermal vias on 120 mil centers were utilized for

heat transfer between surfaces of the test card.

Notes

• Chip surface temperature measured using FLIR A40 thermal

imaging system with an approximate test card surface

temperature of 85 °C.

DIMENSIONS in inches

CASE SIZE

LENGTH

WIDTH

W (± 0.005)

THICKNESS

MIN./MAX.

TOP PAD

D (± 0.005)

BOTTOM PAD

E (± 0.005)

1206

0.126 ± 0.008

0.063

0.015/0.033

0.020 + 0.005/- 0.010

0.040

2512

0.259 + 0.009/- 0.015

0.124

0.015/0.033

0.02

0.050

LAND PATTERN DIMENSIONS in inches

STANDARD MATERIAL SPECIFICATIONS

Resistive Element

Nichrome

Substrate Material

Terminations (Tin/Lead)

Tin/lead solder over nickel barrier

Terminations (Lead (Pb)-free)

Tin/silver/copper (Sn96.5Ag3.0Cu0.5) solder over nickel barrier

D

W

T

L

E

PHP Land Pattern for 1206 Case Size

PHP Land Pattern for 2512 Case Size

0.0710

0.0755

0.0220

0.1260

0.0910

0.1090

PHP CHIP TEMP. VS. APPLIED POWER

Chip Surface Temperature (°C)

70

200

0.00

0.50

1.00

1.50

2.00

5.00

2.50

3.00

3.50

4.00

4.50

150

1206 - 100

Ω

1206 - 5 k

Ω

1206 - 10 k

Ω

PHP CHIP TEMP. VS. APPLIED POWER

Case Size

2512

2512

2512

Resistance

Value

Up to 10



Up to 10 k



Up to 30 k



Temperature

Power (W)

70

2.44

1.81

1.87

150

6.82

4.89

5.19

200

9.33

6.63

7.09

Chip Surface Temperature (°C)

70

200

0.00

1.00

2.00

3.00

4.00

10.00

5.00

6.00

7.00

8.00

9.00

150

2512 - 10

Ω

2512 - 10 k

Ω

2512 - 30 k

Ω