PTF65191R00DZR6 - Vishay Presicion Group

www.vishay.com For technical questions, contact: ff2aresistors@vishay.com Document Number: 31019

86 Revision: 18-Nov-10

PTF

Vishay Dale

Metal Film Resistors, High Precision, High Stability

FEATURES

•

Extremely low temperature coefficient of resistance

•

Very low noise and voltage coefficient

•

Very good high frequency characteristics

•

Can replace wirewound bobbins

•

Proprietary epoxy coating provides superior

moisture protection

•

For surface mount product, see Vishay Dale’s PSF

datasheet

•

Compliant to RoHS Directive 2002/95/EC

Notes

• Marking: Print-marked-model, value, tolerance, TC, date code

• DSCC has created a drawing to support the need for a precision axial-leaded product. Vishay Dale is listed as a resource on this drawing as

follows:

This drawing can be viewed at: www.dscc.dla.mil/Programs/MilSpec/ListDwgs.asp?DocType=DSCCdwg

(1) Continuous working voltage shall be or maximum working voltage, whichever is less.

(2) Hot solder dipped leads

(3) For operation of the PTF resistors at higher power ratings, see the Load Life Shift Due to Power and Derating table. This table gives a

summary of the effects of using the PTF product at the more common combinations of power rating and case size, as well as quantifies the

load life stability under those conditions.

Note

(4) Historical tolerance codes were BB for 0.01 % and BC for 0.02 %

* Pb containing terminations are not RoHS compliant, exemptions may apply

STANDARD ELECTRICAL SPECIFICATIONS

GLOBAL

MODEL

HISTORICAL

MODEL

POWER RATING (3)

P85 °C

LIMITING ELEMENT

VOLTAGE MAX. (1)

TEMPERATURE

COEFFICIENT

± ppm/°C

TOLERANCE

± %

RESISTANCE

RANGE

PTF51 PTF-51 0.05 200 5, 10, 15 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 100K

PTF56 PTF-56 0.125 300 5, 10, 15 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1 15 to 500K

PTF65 PTF-65 0.25 500 5, 10, 15 0.05, 0.1, 0.25, 0.5, 1 15 to 1M

DSCC

DRAWING

NUMBER

VISHAY DALE

MODEL

POWER RATING

P85 °C

RESISTANCE

RANGE

TOLERANCE

± %

TEMPERATURE

COEFFICIENT

± ppm/°C

MAXIMUM WORKING

VOLTAGE (1)

89088 PTF56..31,

PTF56..32 (2) 0.100 15 to 100K 0.01, 0.05, 0.1, 0.5, 1 5, 10 200

90038 PTF65..16,

PTF65..14 (2) 0.250 15 to 100K 0.05, 0.1, 0.5, 1 5, 10 200

TEMPERATURE COEFFICIENT CODES

GLOBAL TC CODE HISTORICAL TC CODE TEMPERATURE COEFFICIENT

ZT- 1 6 5 ppm/°C

YT- 1 3 10 ppm/°C

X T-10 15 ppm/°C

P x R

GLOBAL PART NUMBER INFORMATION

HISTORICAL RESISTANCE TOLERANCE TEMP.

MODEL VALUE CODE COEFFICIENT

PTF-56 20K5 B T-13 R36

RESISTANCE TOLERANCE

MODEL VALUE CODE

PTF51 R = Ω

K = kΩ

M = MΩ

15R000 = 15 Ω

500K00= 500 kΩ

1M0000= 1.0 MΩ

T = ± 0.01 %

(4)

Z = 5 ppm EK = Lead (Pb)-free, bulk

EA = Lead (Pb)-free, T/R (full)

EB = Lead (Pb)-free,

T/R (1000 pieces)

BF = Tin/lead, bulk

RE = Tin/lead, T/R (full)

R6 = Tin/lead, T/R (1000 pieces)

Q = ± 0.02 %

(4)

Y= 10 ppm

PTF65 A = ± 0.05 %X = 15 ppm

B=± 0.1 %0 = Special

C=± 0.25 %

D=± 0.5 %

F=± 1 %

New Global Part Numbering: PTF5620K500BYRE (preferred part numbering format)

PT F 56 2 0K5 0 0B Y

Historical Part Number example: PTF-5620K5BT-13R36 (will continue to be accepted)

Blank = Standard

(Dash number)

(Up to 3 digits)

From

1 to 999

PACKAGING

as applicable

PTF56

TEMP.

COEFFICIENTSPECIAL

GLOBAL

PACKAGING

Document Number: 31019 For technical questions, contact: ff2aresistors@vishay.com www.vishay.com

Revision: 18-Nov-10 87

PTF

Metal Film Resistors, High Precision, High Stability Vishay Dale

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) Veff > 500 > 500 > 500

Thermal Resistance K/W < 1300 < 520 260

Terminal Strength, Axial N > 150 > 50 > 50

Insulation Resistance Ω≥ 1011 ≥ 1011 ≥ 1011

Category Temperature Range °C - 55 to + 150 - 55 to + 150 - 55 to + 150

Failure Rate 10-9/h < 1 < 1 < 1

Weight (Max.) g 0.11 0.35 0.75

DIMENSIONS

Note

(1) 1.08 ± 0.125 (27.43 ± 3.18) if tape and reel

L1 max.

1.50 ± 0.125 (1)

(38.10 ± 3.18)

GLOBAL

MODEL

DIMENSIONS in inches (millimeters)

LDL

1 max. 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.

www.vishay.com For technical questions, contact: ff2aresistors@vishay.com Document Number: 31019

88 Revision: 18-Nov-10

PTF

Vishay Dale Metal Film Resistors, High Precision, High Stability

LOAD LIFE SHIFT DUE TO POWER AND DERATING (AT 85 °C)

The power rating for the PTF parts is tied to the derating temperature, the heat rise of the parts, and the ΔR for the load life performance.

When the tables/graphs below are used together they show that when the parts are run at higher power ratings, the parts will run hotter,

which has the potential of causing the resistance of the parts to shift more over the life of the part.

LOAD LIFE SHIFT VS. POWER RATING

LOAD LIFE

CONDITIONS OF TEST MAXIMUM ΔR (TYPICAL TEST LOTS)

MIL-PRF-55182 Paragraph 4.8.18

1000 h rated power at + 85 °C ≤ ± 0.04 % ≤ ± 0.15 % ≤ ± 0.5 % ≤ ± 1.0 %

MODEL POWER RATING AT + 85 °C

PTF51 1/20 W 1/10 W 1/8 W 1/4 W

PTF56 1/8 W - 1/4 W 1/2 W

PTF65 1/4 W - 1/2 W 3/4 W

Example: When a PTF56 part is run at 1/8 W in a 70 °C ambient environment, the resistor will generate enough heat that the surface

temperature of the part will reach about 17 °C over the ambient temperature, and over the life of the part this could cause the resistance

value to shift up to ± 0.04 %.

If the same resistor was instead run at 1/4 W in a 70 °C environment, the element will heat up to about 30 °C over ambient, and over the life

of the part the resistance value could shift roughly ± 0.5 %.

And if the resistor was run at its maximum power rating of 1/2 W in a 70 °C environment, it will heat up to about 61°C over ambient, and you

could see the resistance value shift roughly ± 1 % over the life of the part.

AMBIENT TEMPERATURE IN °C

DERATING

RATED POWER IN %

100

120

- 55 - 25 0 25 50 75 100 125 150 175 200

100

120

APPLIED POWER IN W

HEAT RISE (°C ABOVE AMBIENT)

0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.125

THERMAL RESISTANCE

PTF65

PTF56

PTF51

TEMPERATURE COEFFICIENT OF RESISTANCE

Temperature coefficient (TC) of resistance is normally stated as the maximum amount of resistance change from the original + 25 °C value

as the ambient temperature increases or decreases. This is most commonly expressed in parts per million per degree centigrade (ppm/°C).

The resistance curve over the operating temperature range is usually a non-linear curve within predictable maximum limits. PTF resistors

have a very unifom resistance temperature characteristic when measured over the operating range of - 20 °C to + 85 °C. The standard

temperature coefficients available are

X = ± 15 ppm/°C, Y = ± 10 ppm/°C and Z = ± 5 ppm/°C.

Some applications of the PTF require operation beyond the specifications of - 20 °C to + 85 °C. The change in temperature coefficient of

resistance is very small (less than ± 0.05 ppm/°C) over the expanded temperature range of - 55 °C to + 150 °C. Therefore, when operating

outside the range - 20 °C to + 85 °C, the designer can plan for a worst case addition of ± 0.05 ppm/°C for each degree centigrade beyond

either - 20 °C or + 85 °C as indicated in the graph. This applies to all three temperature coefficient codes.

Example: Assume the operating characteristics demand a temperature range from - 55 °C to + 125 °C. This requires a ± 35 °C Δ below

- 20 °C and a ± 40 °C Δ above + 85 °C. The extreme Δ being ± 40 °C means that the worst case addition to the specified TC limit of

± 0.05 ppm/°C times ± 40 °C or ± 2 ppm/°C. Therefore, a Z which is characterized by a base TC limit of ± 5 ppm/°C over the temperature

range of - 20 °C to + 85 °C will exhibit a maximum temperature coefficient of ± 7 ppm/°C over the expanded portion of the temperature

range of - 55 °C to + 125 °C.

- 50 - 40 - 30 - 20 90 100 110 120 130 140 150

EXPANDED

OPERATING RANGE

- 55 °C TO - 20 °C

EXPANDED

OPERATING RANGE

- 85°

C TO + 150 °C

- 20 °C TO + 85°

BASE TC LIMIT

X, Y

or Z

ppm/°C

NI C

AB O

NOIT

DDA

EHT

FO NO

OP DED

PXE

NAR ERUTA

REPMET

Document Number: 91000 www.vishay.com

Revision: 11-Mar-11 1

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