Type HTP Series Specifications

Thermal and Electrical Properties

The following table lists the thermal and electrical proper-

ties for all high temperature probes. All definitions and test

methods are per MIL-PRF-23648.

Table A

Probe Length Options

Thermistor Type

HTP60

HTP65

HTP85

HTP100

Maximum

Diameter

0.060 in (1.5 mm)

0.065 in (1.7 mm)

0.085 in (2.2 mm)

0.100 in (2.5 mm)

Standard

Length Code “B”

0.250 in (6.3 mm)

0.250 in (6.3 mm)

0.250 in (6.3 mm)

0.250 in (6.3 mm)

Length Codes Available

(special order only)

“A”, “C”, “D”

“A”, “C”, “D”

“A”, “C”, “D”

“A”, “C”, “D”

Lead-Wires

Nominal Diameter

0.008 in (0.20 mm)

0.008 in (0.20 mm)

0.008 in (0.20 mm)

0.008 in (0.20 mm)

Minimum Lead Length

0.250 in (6.3 mm)

0.250 in (6.3 mm)

0.250 in (6.3 mm)

0.250 in (6.3 mm)

Lead Material

Platinum Alloy

Platinum Alloy

Platinum Alloy

Platinum Alloy

Thermal Time Constant

Still Air at 77°F (25°C)

12 seconds

13 seconds

16 seconds

22 seconds

Dissipation Constant

Still Air at 77°F (25°C)

0.60 mW/°C

0.65 mW/°C

0.80 mW/°C

1.0 mW/°C

Resistance Range at 257°F (125°C) ohms (S)

Maximum Power

100 k to 2 M

100 k to 2 M

100 k to 2 M

100 k to 2 M

Rating

0.060 Watts

0.065 Watts

0.075 Watts

0.100 Watts

Data

Table B

Temp °F (°C)

RT/R125

Temp °F (°C)

RT/R125

257 (125)

1.00000

572 (300)

0.00793

302 (150)

0.41087

617 (325)

0.00487

347 (175)

0.18272

662 (350)

0.00310

392 (200)

0.08720

707 (375)

0.00203

437 (225)

0.04430

725 (400)

0.00138

482 (250)

0.02380

797 (425)

0.00096

527 (275)

0.01344

842 (450)

0.00068

NTC Type HTP Series dimensions