Features Directly calibrated in °Kelvin 1°C initial accuracy available Operates from 400 μA to 5 mA Less than 1Ω dynamic impedance Easily calibrated Wide operating temperature range 200°C overrange Low cost Description The LM135 series are precision, easily-calibrated, integrated circuit temperature sensors. Operating as a 2-terminal zener, the LM135 has a breakdown voltage directly proportional to absolute temperature at +10 mV/°K. With less than 1Ω dynamic impedance the device operates over a current range of 400 μA to 5 mA with virtually no change in performance. When calibrated at 25°C the LM135 has typically less than 1°C error over a 100°C temperature range. Unlike other sensors the LM135 has a linear output. Applications for the LM135 include almost any type of temperature sensing over a −55°C to 150°C temperature range. The low impedance and linear output make interfacing to readout or control circuitry especially easy. The LM135 operates over a −55°C to 150°C temperature range while the LM235 operates over a −40°C to 125°C temperature range. The LM335 operates from −40°C to 100°C. The LM135/LM235/LM335 are available packaged in hermetic TO-46 transistor packages while the LM335 is also available in plastic TO-92 packages.

Also Recommended LM94022▲ Multi-gain, Lower Minimum Supply Voltage, Lower Supply Current

Typical Application *click for larger image	Connection Diagram click for larger image
Typical Performance *click for larger image

Datasheets

Title		Size	Date	Other Language
	LM335 Precision Temperature Sensor	857 Kbytes	17-Dec-08

Application Notes

Title		Size	Date	Other Language
	AN-225: Application Note 225 IC Temperature Sensor Provides Thermocouple Cold-Junction Compensation	89 Kbytes	2-Oct-02
	AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp IC	135 Kbytes	2-Oct-02
	AN-295: Application Note 295 A High Performance Industrial Weighing System	117 Kbytes	4-Oct-04
	AN-298: Application Note 298 Isolation Techniques for Signal Conditioning	379 Kbytes	2-Oct-02
	AN-272: Application Note 272 Op Amp Booster Designs	382 Kbytes	2-Oct-02

Other Technical Documents

Title		Type	Date
	Temperature Sensors Handbook	App Note	2003-03-13

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM335AM/NOPB LM335AM RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 910 AVNET-EM Worldwide 419 DIGI-KEY Worldwide 669 FARNELL Europe and Asia 522 MOUSER Worldwide 834 NEWARK Americas 522 RS COMPONENTS Worldwide 400 TAYLOR Americas 910	$0.49 each at 1K+ pcs	rail of 95
LM335AMX/NOPB LM335AMX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 2500 AVNET-EM Worldwide 2295 DIGI-KEY Worldwide 0 MOUSER Worldwide 2398 TAYLOR Americas 2500	$0.49 each at 1K+ pcs	reel of 2500
LM335AZ/NOPB LM335AZ RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 12 AVNET-EM Worldwide 29 DIGI-KEY Worldwide 1852 FARNELL Europe and Asia 2132 MOUSER Worldwide 1651 NEWARK Americas 1200 TAYLOR Americas 7787	$0.54 each at 1K+ pcs	box of 1800
LM335M/NOPB LM335M RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 272 AVNET-EM Worldwide 118 DIGI-KEY Worldwide 311 FARNELL Europe and Asia 11555 MOUSER Worldwide 1043 NEWARK Americas 538 RS COMPONENTS Worldwide 245 TAYLOR Americas 2755	$0.33 each at 1K+ pcs	rail of 95
LM335MX/NOPB LM335MX RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1965 AVNET-EM Worldwide 2500 DIGI-KEY Worldwide 0 MOUSER Worldwide 1230 TAYLOR Americas 1965	$0.33 each at 1K+ pcs	reel of 2500
LM335Z/NOPB RoHS Status	TO-92	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 3466 AVNET-EM Worldwide 758 DIGI-KEY Worldwide 4039 FARNELL Europe and Asia 10399 MOUSER Worldwide 1382 NEWARK Americas 1540 RSL MICRO Asia Pacific 52200 TAYLOR Americas 3466	$0.34 each at 1K+ pcs	box of 1800
LM335H/NOPB LM335H RoHS Status	TO-46	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 212 DIGI-KEY Worldwide 0 FARNELL Europe and Asia 307 TAYLOR Americas 465	$4.36 each at 1K+ pcs	box of 1000

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM335A MDC	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM335.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM335 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM335AM/NOPB LM335AM	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM335 AM
LM335AMX/NOPB LM335AMX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM335 AM
LM335AZ/NOPB LM335AZ	201.662 202.003	TO-92	3	1 1	NA NA	Detail	Download	N/A	NSXYTT LM335 AZ
LM335M/NOPB LM335M	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM335 M
LM335MX/NOPB LM335MX	69.761 70.001	SOIC NARROW	8	1 1	260 235	Detail	Download	N/A	NSZXTT LM335 M
LM335Z/NOPB	201.662 202.003	TO-92	3	1	NA	Detail	Download	N/A	NSXYTT LM335 Z
LM335H/NOPB LM335H	279.309 279.699	TO-46	3	1 1	NA NA	Detail	Download	N/A	NSXYTTE# LM335H

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM335.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM335 is located at RoHS Status.

CAD Symbols and Models Download LM335 CAD Symbols

Models N/A

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM335A MDC	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009