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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

TMP61

SBOS921C – DECEMBER 2018 – REVISED SEPTEMBER 2019

TMP61 Small Silicon-Based Linear Thermistor for Temperature Sensing

1

1 Features

1

•

Silicon-based thermistor with a

Positive Temperature Coefficient (PTC)

•

Linear resistance change with temperature

–

Simplifies resistance-to-temperature

conversion

–

Decrease accuracy spread compared to non-

linear Negative Temperature Coefficient (NTC)

thermistor-based circuits across a wide

temperature range

•

10-k

Ω nominal resistance at 25°C (R25)

–

±1% maximum (0°C to 70°C)

•

Consistent sensitivity across temperature

–

6400 ppm/°C TCR (25°C)

–

0.2% typical TCR tolerance across

temperature (–40°C to 125°C)

•

Wide operating temperature:

–

–65°C to +150°C

•

Fast thermal response time:

–

0.6 second for DEC package

•

Long lifetime and robust performance

–

Ultra low power consumption compared to

traditional NTCs that lower errors due to self

heating

–

Built-in fail-safe in case of short-circuit failures

–

<1% maximum drift after high temperature and

high humidity stress tests

•

Available package options:

–

X1SON (DEC/0402 footprint)

–

TO-92S (LPG)

–

SOT-5X3 (DYA) (contact representative for

availability)

2 Applications

•

Temperature Measurement and Monitoring

•

Thermal Compensation

•

Thermal Protection (With Comparator)

3 Description

The TMP61 series of small silicon linear thermistors

are

designed

for

temperature

measurement,

protection,

compensation,

and

control

systems.

Compared to traditional NTC thermistors, the TMP61

device offers enhanced linearity and consistent

sensitivity across the full temperature range. The

TMP61 offers robust performance due to device

immunity to environmental variation and built-in fail-

safe behaviors at high temperatures. This device is

currently available in a 2-pin, surface-mount, 0402

footprint-compatible X1SON package and a 2-pin,

through-hole, mini-sized transistor-outline TO-92S

package, and a low profile 2-pin SOT-5X3 package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP61

X1SON (2)

0.60 mm × 1.00 mm

TO-92S (2)

4.00 mm × 3.15 mm

SOT-5X3 (2)(2)

0.80 mm × 1.20 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

(2) This package is in preview

SPACER

SPACER

SPACER

SPACER

Typical Implementation Circuits

Typical Resistances vs Ambient Temperature