product guide
TEMPERATURE SENSITIVE
Type TFP Platinum Thin Film Resistor
FEATURES:
The only materials used in these elements are ceramic and platinum, with the result that they are highly stable physically and chemically when subject to temperature changes. A fully automated production process guarantees consistant product quality at comparatively low cost.
The elements are made exclusively of ceramic and platinum, giving excellent stability at high temperatures. They are suitedable for use between -40°C and 400°C.
The platinum resistance film is sputtered on the ceramic surface giving outstanding resistance to vibration and shock.
Laser trimming enables us to offer a 1000 element in addition to 100 .
After trimming, the surface is coated with ceramic, so the elements can withstand high voltage and have high insulation resistance.
Stability:
After continously heating model TFP1 at 400°C for 6,000 hours the margin of error at 0°C is within 0.055°C.
Self-Heating:
The current used with the element should not exceed 2mA. When model TFP1 is put in a 4mm protecting tube, it's resistance value is 0.02 at 2mA when measured in agitated water at 0°C but the resistance value rises to 0.2 at 5mA.
Tolerance:
Class Temperature
Tolerance (°C)
Resistance Tolerance
at 0°C ( )
TCR (Alpha)
ohm/ohm/°C
1/3DIN ± (0.1 + 0.0017t) ± 0.04 0.003851 ± 0.000004
A ± (0.15 + 0.002t) ± 0.06 0.003851 ± 0.000005
B ± (0.3 + 0.005t) ± 0.12 0.003851 ± 0.000012
2B ± (0.6 + 0.01t) ± 0.25 0.003851 ± 0.000024
Response Data:
Response time (90% response)
M-O P/N Response time (sec):
Air Water
 V=1.0m/s  V=3.0m/s
TFP1 10 7 0.3
TFP2/3 16 11 0.3
Dimensions

Dimension Shown in mm.
M-O P/N W
±.40
L
±.50
H
±.25
Resistance Value Measure-
ment Current
Tolerance Recommended
Operating Temp.
TCR
(alpha)
TFP1 1.6 3.2 1.0 100 not
exceeding 1mA
1/3DIN
A
B
1/3DIN
-20~+250°C

Class A
-20~+400°C

Class B
-40~+500°C

Class 2B
-40~+400°C

0.003851
ohm/ohm/°C

TFP2 2.0 5.0 1.0 100 not
exceeding 1mA
A
B
TFP3 2.0 5.0 1.0 500 & 1000 not
exceeding 0.5mA
2B
TO ORDER PRODUCTS
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167

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