PHT

www.vishay.com

Vishay Sfernice

Revision: 14-Jan-15

1

Document Number: 53050

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

High Stability - High Temperature (230 °C)

Thin Film Wraparound Chip Resistors, Sulfur Resistant

INTRODUCTION

For applications such as down hole applications, the need

for parts able to withstand very severe conditions

(temperature as high as 215 °C powered or up to 230 °C

un-powered) has leaded Vishay Sfernice to push out the

limit of the thin film technology.



Designers

might

read

the

application

note:

Power

Dissipation

Considerations

in

High

Precision

Vishay

Sfernice

Thin

Film

Chip

Resistors

and

Arrays

(P,

PRA

etc…)

(High

Temperature

Application)

www.vishay.com/doc?53047

in

conjunction

with

this

datasheet to help them to properly design their PCBs and

get the best performances of the PHT.

Vishay Sfernice R&D engineers will be willing to support any

customer design considerations.

FEATURES

• Operating temperature range:



-55 °C; +215 °C

• Storage temperature: -55 °C; +230 °C

• Gold terminations (< 1 μm thick)

• 5 sizes available (0402, 0603, 0805, 1206,

2010); other sizes upon request

• Temperature coefficient down to 15 ppm



(-55 °C; +215 °C)

• Tolerance down to 0.01 %

• Load life stability: 0.35 % max. after 2000 h at 220 °C

(ambient) at Pn

• Shelf life stability: 0.7 % typ. (1 % max.) after 15 000 h at

230 °C

• SMD wraparound

• TCR remains constant after long term storage at 230 °C

(15 000 h)

• Sulfur resistant (per ASTM B809-95 humid vapor test)

• Material categorization: for definitions of compliance

Notes

Note

• For other terminations, please consult

STANDARD ELECTRICAL SPECIFICATIONS

MODEL

SIZE

RESISTANCE

RANGE



W

LIMITING ELEMENT

VOLTAGE

V

± %

TEMPERATURE

± ppm/°C

PHT0402

0402

10 to 130K

0.0189

50

0.01, 0.02, 0.05, 0.1, 0.5, 1

10, 15, 25, 30, 50, 55

PHT0603

0603

10 to 320K

0.0375

75

0.01, 0.02, 0.05, 0.1, 0.5, 1

10, 15, 25, 30, 50, 55

PHT0805

0805

10 to 720K

0.06

150

0.01, 0.02, 0.05, 0.1, 0.5, 1

10, 15, 25, 30, 50, 55

PHT1206

1206

10 to 2.7M

0.1

200

0.01, 0.02, 0.05, 0.1, 0.5, 1

10, 15, 25, 30, 50, 55

PHT2010

2010

10 to 7.5M

300

0.01, 0.02, 0.05, 0.1, 0.5, 1

10, 15, 25, 30, 50, 55

CLIMATIC SPECIFICATIONS

Operating temperature range

-55 °C; +215 °C

Storage temperature range

-55 °C; +230 °C

PERFORMANCE VS. HUMID SULFUR VAPOR

Test conditions

50 °C ± 2 °C, 85 % ± 4 % RH,

exposure time 500 h

Test results

Resistance drift < (0.05 % R + 0.05

),

no corrosion products observed

MECHANICAL SPECIFICATIONS

Substrate

Alumina

Resistive Element

Nichrome (NiCr)

Passivation

Protection

Epoxy + silicone

Terminations

Gold (< 1 μm) over nickel barrier