PTF

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Vishay Dale

Revision: 15-Nov-12

2

Document Number: 31019

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

DIMENSIONS

Note

spacing and lead trim.

TECHNICAL SPECIFICATIONS

PARAMETER

UNIT

PTF51

PTF56

PTF65

Rated Dissipation at 85 °C

W

0.05

0.125

0.25

Limiting Element Voltage

V



200

300

500

Insulation Voltage (1 Min)

> 500

> 500

> 500

Thermal Resistance

K/W

< 1300

< 520

260

Terminal Strength, Axial

N

> 150

> 50

> 50

Insulation Resistance

Category Temperature Range

°C

- 55 to + 150

- 55 to + 150

- 55 to + 150

Failure Rate

< 1

< 1

< 1

Weight (Max.)

g

0.11

0.35

0.75

L

D

(38.10 ± 3.18)

d

GLOBAL

MODEL

DIMENSIONS in inches (millimeters)

LD

d

PTF51

0.150 ± 0.020

(3.81 ± 0.51)

0.070 ± 0.010

(1.78 ± 0.25)

0.200

(5.08)

0.016

(0.41)

PTF56

0.250 ± 0.031

(6.35 ± 0.79)

0.091 ± 0.009

(2.31 ± 0.23)

0.300

(7.62)

0.025

(0.64)

PTF65

0.375 ± 0.062

(9.53 ± 1.57)

0.145 ± 0.016

(3.68 ± 0.41)

0.475

(12.07)

0.025

(0.64)

PERFORMANCE

TEST

CONDITIONS OF TEST

TEST RESULTS (TYPICAL TEST LOTS)

Life (at Standard Power Ratings)

MIL-PRF-55182 Paragraph 4.8.18

1000 h rated power at + 85 °C

 ± 0.04 %

Thermal Shock

Mil-STD-202, Method 107

- 55 °C to + 85 °C

 ± 0.02 %

Short Time Overload

MIL-R-10509, Paragraph 4.7.6

 ± 0.01 %

Low Temperature Operation

MIL-PRF-55182, Methods 4.8.10

 ± 0.02 %

Moisture

MIL-PRF-55182, Paragraph 4.8.15

 ± 0.08 %

Resistance to Soldering Heat

MIL-STD-202, Methods 210

 ± 0.02 %

Damp Heat IEC 60068-2-3

56 days at 40 °C and 92 % RH

 ± 0.08 %

Dielectric Withstanding Voltage

MIL-STD-202, Methods 301 and 105

 ± 0.01 %

MATERIAL SPECIFICATIONS

Element

Precision deposited nickel chrome alloy with controlled annealing

Encapsulation

Specially formulated epoxy compounds. Coated construction

Core

Fire-cleanded high purity ceramic

Termination

Standard lead material is solder-coated copper. Solderable and weldable

per MIL-STD-1276, Type C.

MARKING

Temperature coefficient: T10 = 15 ppm, T13 = 10 ppm, T16 = 5 ppm

Tolerance: F = 1 %, D = 0.5 %, C = 0.25 %, B = 0.1 %, A = 0.05 %, BC = 0.02 %, BB = 0.01 %

PTF51: (3 lines)

PTF56, PTF65: (4 lines)

PTF51

Style and size

PTF56

Style and size

37K4

Value

49K9

Value

BC T13

Tolerance and TC

BB T16

Tolerance and TC

1211

4-digit date code