Features Low temperature coefficient Wide operating current of 400 μA to 10 mA 0.2Ω dynamic impedance ±1% initial tolerance available Guaranteed temperature stability Easily trimmed for minimum temperature drift Fast turn-on Description The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These monolithic IC voltage references operate as a low-temperature-coefficient 2.5V zener with 0.2Ω dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed easily. The LM136-2.5 series is useful as a precision 2.5V low voltage reference for digital voltmeters, power supplies or op amp circuitry. The 2.5V make it convenient to obtain a stable reference from 5V logic supplies. Further, since the LM136-2.5 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. The LM136-2.5 is rated for operation over −55°C to +125°C while the LM236-2.5 is rated over a −25°C to +85°C temperature range. The LM336-2.5 is rated for operation over a 0°C to +70°C temperature range. See the connection diagrams for available packages.

Also Recommended LM4030▲ Improved Initial Accuracy And Tempco LM4041▲ Improved Initial Accuracy

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

Datasheets

Title		Size	Date	Other Language
	LM136-2.5 Voltage Reference Diode	306 Kbytes	27-Feb-09

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM136AH-2.5/NOPB LM136AH-2.5 RoHS Status	TO-46	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 423 AVNET-EM Worldwide 365 DIGI-KEY Worldwide 0 TAYLOR Americas 1353	$7.00 each at 1K+ pcs	box of 1000
LM136H-2.5/NOPB LM136H-2.5 RoHS Status	TO-46	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 475 AVNET-EM Worldwide 281 DIGI-KEY Worldwide 0 TAYLOR Americas 2899	$5.70 each at 1K+ pcs	box of 1000
LM236H-2.5/NOPB LM236H-2.5 RoHS Status	TO-46	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 859 AVNET-EM Worldwide 149 DIGI-KEY Worldwide 0 MOUSER Worldwide 950 TAYLOR Americas 859	$3.70 each at 1K+ pcs	box of 1000

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM136-2.5C DWF	NONE	NONE	08 Sep 1998

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 LM136-2.5.

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 LM136-2.5 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
LM136AH-2.5/NOPB LM136AH-2.5	279.309 279.699	TO-46	3	1 1	NA NA	Detail	N/A	N/A	NSXYTTE# LM136AH2.5
LM136H-2.5/NOPB LM136H-2.5	279.309 279.699	TO-46	3	1 1	NA NA	Detail	N/A	N/A	NSXYTTE# LM136H2.5
LM236H-2.5/NOPB LM236H-2.5	279.309 279.699	TO-46	3	1 1	NA NA	Detail	N/A	N/A	NSXYTTE# LM236H2.5

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 LM136-2.5.

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 LM136-2.5 is located at RoHS Status.

CAD Symbols and Models N/A

Models N/A

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LM136-2.5C DWF	NONE	NONE	08 Sep 1998