LM336Z25 Equivalent & Substitute Parts

Part Overview

The LM336Z25 is a shunt voltage reference IC manufactured by onsemi, providing a fixed 2.5V output with ±2% tolerance in a TO-92-3 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Shunt voltage references are precision components used in analog circuits for voltage regulation, biasing, and measurement applications. The LM336Z25 operates across a 0°C to 70°C temperature range and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Fixed
Voltage - Output (Min/Fixed)	2.5V
Tolerance	±2%
Operating Temperature	0°C ~ 70°C (TA)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution for the LM336Z25 is determined by the following critical parameters:

Reference Type: Must be Shunt
Output Type: Must be Fixed
Voltage Output: 2.5V nominal (2.49V acceptable within tolerance band)
Package: TO-92-3 (TO-226-3)
Mounting: Through Hole
Operating Temperature Range: 0°C ~ 70°C minimum
Compliance: ROHS3 and REACH requirements

Substitute parts are grouped into two categories:

Direct Substitutes (±2% tolerance, matching original specification):

LM336BLP-2-5 (Texas Instruments, Active)
LM336BLPE3-2-5 (Texas Instruments, Obsolete)
LM336BZ-2.5/NOPB (Texas Instruments, Active)

Compatible Alternatives (varying tolerance and performance characteristics):

LM336LP-2-5 (±4% tolerance, Active)
LM336LPE3-2-5 (±4% tolerance, Obsolete)
LM336Z-2.5#PBF (±0.48% tolerance, Analog Devices Inc., Active)
LM336Z-2.5/NOPB (±4% tolerance, Texas Instruments, Active)
LT1009CLP (±0.2% tolerance, Texas Instruments, Active)
LT1009CLPE3 (±0.2% tolerance, Texas Instruments, Obsolete)

Parameter Comparison

Part Number	Manufacturer	Voltage Output	Tolerance	Current Output	Product Status	Inventory
LM336Z25	onsemi	2.5V	±2%	—	Obsolete	4650 Pcs
LM336BLP-2-5	Texas Instruments	2.49V	±2%	10 mA	Active	1210 Pcs
LM336BLPE3-2-5	Texas Instruments	2.49V	±2%	10 mA	Obsolete	1626 Pcs
LM336LP-2-5	Texas Instruments	2.49V	±4%	10 mA	Active	2070 Pcs
LM336LPE3-2-5	Texas Instruments	2.49V	±4%	10 mA	Obsolete	888 Pcs
LM336BZ-2.5/NOPB	Texas Instruments	2.49V	±2%	10 mA	Active	12700 Pcs
LM336Z-2.5#PBF	Analog Devices Inc.	2.49V	±0.48%	15 mA	Active	1019 Pcs
LM336Z-2.5/NOPB	Texas Instruments	2.49V	±4%	10 mA	Active	44040 Pcs
LT1009CLP	Texas Instruments	2.5V	±0.2%	10 mA	Active	1218 Pcs
LT1009CLPE3	Texas Instruments	2.5V	±0.2%	10 mA	Obsolete	12400 Pcs

Engineering Selection Recommendations

For Direct Replacement (Matching ±2% Tolerance Specification):

LM336BZ-2.5/NOPB is the primary recommendation. It is manufactured by Texas Instruments with Active product status, ensuring long-term availability and supply chain stability. This part maintains the ±2% tolerance specification of the original LM336Z25 and is available in high inventory (12700 Pcs).

LM336BLP-2-5 provides an alternative direct substitute with Active status and equivalent electrical characteristics, though with lower inventory availability (1210 Pcs).

For Applications Requiring Tighter Tolerance:

LM336Z-2.5#PBF (Analog Devices Inc., ±0.48% tolerance) and LT1009CLP (Texas Instruments, ±0.2% tolerance) offer superior voltage accuracy for precision applications. Both are Active products with ROHS3 compliance. The LT1009CLP additionally specifies a 25ppm/°C temperature coefficient, providing enhanced temperature stability.

For Cost-Optimized Designs:

LM336Z-2.5/NOPB and LM336LP-2-5 are suitable where ±4% tolerance is acceptable. Both are Active products with substantial inventory availability (44040 Pcs and 2070 Pcs respectively).

Obsolete Part Considerations:

LM336BLPE3-2-5, LM336LPE3-2-5, and LT1009CLPE3 carry Obsolete status and should be avoided for new designs despite current inventory availability. These parts are suitable only for legacy system maintenance where original specifications must be preserved.

All recommended substitutes maintain TO-92-3 package compatibility, Through Hole mounting, 0°C to 70°C operating temperature range, ROHS3 compliance, and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can LM336LP-2-5 replace LM336Z25 in all applications?

A: LM336LP-2-5 is electrically compatible but has ±4% tolerance versus the original ±2%. It is suitable for applications where the wider tolerance band does not affect circuit performance. Verify tolerance requirements in your design specifications before substitution.

Q: What is the difference between LM336BLP-2-5 and LM336BZ-2.5/NOPB?

A: Both parts are Texas Instruments shunt voltage references with ±2% tolerance and 2.49V output. The primary difference is packaging designation and availability. LM336BZ-2.5/NOPB has significantly higher inventory (12700 Pcs vs 1210 Pcs) and Active product status, making it the preferred choice for new procurement.

Q: Can I use LT1009CLP instead of LM336Z25?

A: Yes. LT1009CLP is a direct functional substitute with superior specifications: ±0.2% tolerance (versus ±2%), 2.5V output (matching the original), and 25ppm/°C temperature coefficient. It is suitable for applications requiring higher precision. All package and compliance requirements are met.

Q: Why is LM336Z-2.5#PBF listed as a similar part rather than direct substitute?

A: LM336Z-2.5#PBF is manufactured by Analog Devices Inc. rather than onsemi or Texas Instruments. While electrically compatible with superior ±0.48% tolerance and 15 mA output capability, it represents a cross-manufacturer substitution. Verify compatibility with your supply chain and qualification requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental and regulatory requirements of the original LM336Z25.

Q: What is the significance of the "E3" designation in part numbers like LM336BLPE3-2-5?

A: The "E3" suffix indicates a specific manufacturing date code or packaging variant. Parts with E3 designation in this list are marked as Obsolete. For new designs, select Active status parts without E3 designation.

Q: Can I mix different substitute parts in the same circuit board?

A: All listed parts are pin-compatible in TO-92-3 packages and functionally equivalent. However, mixing parts with different tolerance specifications (±2%, ±4%, ±0.2%) in the same design may introduce circuit performance variations. Maintain consistency within a single design revision.

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