1N5264B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5264B-TP is a 60 V, 500 mW Zener diode manufactured by Micro Commercial Co in DO-35 through-hole package configuration. This component is classified as obsolete, though 773 pieces remain in stock as new original inventory. The part operates across a temperature range of -55°C to 150°C with ±5% voltage tolerance and is ROHS3 compliant.

Identification of equivalent and substitute parts is necessary due to the obsolete product status of the 1N5264B-TP. Active alternatives with identical or superior electrical characteristics and modern compliance certifications are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	60	V
Tolerance	±5%	—
Power - Max	500	mW
Impedance (Max)	170	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 46 V
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 200 mA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—

Substitute Part Grouping Explanation

Substitution of the 1N5264B-TP is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Zener (Nom): 60 V
Tolerance: ±5% or tighter
Power - Max: 500 mW or greater
Impedance (Max): 170 Ohms or lower
Current - Reverse Leakage @ Vr: 100 nA @ 46 V or lower
Mounting Type: Through Hole
Package / Case: DO-35 or equivalent axial configuration

Substitute parts are grouped into two categories based on electrical performance and product status:

Category 1: Direct Electrical Equivalents (Active Status) Parts 1N5264B-TAP, 1N5264B-TR, 1N5264BDO35, and 1N5264C-TAP meet or exceed all electrical specifications of the main part. These components maintain identical zener voltage, impedance, and leakage characteristics. Parts 1N5264B-TAP and 1N5264B-TR feature automotive-grade qualification (AEC-Q101) and extended operating temperature ranges (-65°C to 175°C). Part 1N5264C-TAP and 1N5264C-TR offer tighter tolerance (±2%) while maintaining all other electrical parameters.

Category 2: Higher Power Alternative Part 1N5088 from Microchip Technology provides the same 60 V zener voltage and ±5% tolerance but with significantly higher power dissipation capability (3 W versus 500 mW). This part is suitable for applications requiring greater thermal headroom while maintaining electrical compatibility at the zener voltage level.

Parameter Comparison

Parameter	1N5264B-TP (Main)	1N5264B-TAP	1N5264B-TR	1N5264BDO35	1N5264C-TAP	1N5264C-TR	1N5088
Manufacturer	Micro Commercial Co	Vishay General Semiconductor	Vishay General Semiconductor	Microsemi Corporation	Vishay General Semiconductor	Vishay General Semiconductor	Microchip Technology
Voltage - Zener (Nom)	60 V	60 V	60 V	60 V	60 V	60 V	60 V
Tolerance	±5%	±5%	±5%	±5%	±2%	±2%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	3 W
Impedance (Max)	170 Ohms	170 Ohms	170 Ohms	170 Ohms	170 Ohms	170 Ohms	70 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 46 V	100 nA @ 46 V	100 nA @ 46 V	100 nA @ 46 V	100 nA @ 46 V	100 nA @ 46 V	1 µA @ 45.7 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA	—
Operating Temperature Range	-55 to 150°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-35	DO-35	DO-35	DO-35	DO-35	DO-35	Axial
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	—
Automotive Grade / AEC-Q101	—	Yes	Yes	—	Yes	Yes	—

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Parts 1N5264B-TAP and 1N5264B-TR from Vishay General Semiconductor are preferred direct replacements. Both maintain identical electrical specifications to the 1N5264B-TP while offering active product status, ROHS3 compliance, and automotive-grade qualification (AEC-Q101). These parts feature extended operating temperature range (-65°C to 175°C) compared to the main part. Inventory availability is substantial (30,275 and 31,538 pieces respectively).

Part 1N5264BDO35 from Microsemi Corporation provides electrical equivalence but carries RoHS non-compliance status. This part is suitable only for applications where RoHS compliance is not required.

For Enhanced Tolerance Requirements:

Parts 1N5264C-TAP and 1N5264C-TR offer tighter tolerance specification (±2% versus ±5%) while maintaining all other electrical parameters. These Vishay components are automotive-qualified and ROHS3 compliant. Selection of these parts is appropriate for applications requiring improved voltage regulation accuracy.

For Higher Power Dissipation:

Part 1N5088 from Microchip Technology provides 60 V zener voltage with 3 W power rating, compared to 500 mW in the main part. This component features lower impedance (70 Ohms versus 170 Ohms) and extended temperature range. The 1N5088 is suitable for applications where thermal margin or higher current handling is required, though reverse leakage current is higher (1 µA versus 100 nA).

Compliance Considerations:

All recommended direct replacements (1N5264B-TAP, 1N5264B-TR, 1N5264C-TAP, 1N5264C-TR) are ROHS3 compliant and REACH unaffected. Automotive applications benefit from AEC-Q101 qualification available on Vishay parts. The 1N5264BDO35 should be avoided in new designs requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can the 1N5264B-TP be directly replaced with 1N5264B-TAP or 1N5264B-TR?

A: Yes. Both parts maintain identical electrical specifications: 60 V zener voltage, ±5% tolerance, 500 mW power rating, 170 Ohms maximum impedance, and 100 nA reverse leakage current. Both are through-hole DO-35 package configuration. The primary differences are packaging format (cut tape versus tape and reel) and extended operating temperature range (-65°C to 175°C versus -55°C to 150°C). Both substitute parts are active products with ROHS3 compliance and AEC-Q101 automotive qualification.

Q: What is the difference between 1N5264B and 1N5264C variants?

A: The primary difference is tolerance specification. The 1N5264B series carries ±5% tolerance, while the 1N5264C series carries ±2% tolerance. All other electrical parameters remain identical: 60 V zener voltage, 500 mW power rating, 170 Ohms impedance, and 100 nA reverse leakage. The tighter tolerance of the 1N5264C series is suitable for applications requiring improved voltage regulation accuracy.

Q: Is the 1N5088 a suitable replacement for the 1N5264B-TP?

A: The 1N5088 is electrically compatible at the zener voltage level (60 V, ±5% tolerance) but differs significantly in power dissipation capability (3 W versus 500 mW) and impedance (70 Ohms versus 170 Ohms). The 1N5088 is suitable for applications requiring higher thermal margin or lower impedance characteristics. Reverse leakage current is higher (1 µA versus 100 nA), which may affect precision voltage regulation applications.

Q: Why is the 1N5264BDO35 not recommended despite electrical equivalence?

A: The 1N5264BDO35 from Microsemi Corporation is electrically equivalent but carries RoHS non-compliant status. This part should be used only in applications where RoHS compliance is not required. Additionally, forward voltage specification differs slightly (1.5 V @ 200 mA versus 1.1 V @ 200 mA), which may affect circuit performance in forward-biased conditions.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: cut tape (CT), tape and reel (TR), tape and box (TB), and bulk bag. All maintain identical through-hole DO-35 axial package configuration suitable for PCB insertion. Selection of packaging format depends on production volume and assembly process requirements rather than electrical performance.

Q: Are all substitute parts automotive-qualified?

A: Automotive-grade qualification (AEC-Q101) is available on Vishay parts: 1N5264B-TAP, 1N5264B-TR, 1N5264C-TAP, and 1N5264C-TR. The Microsemi part (1N5264BDO35) and Microchip part (1N5088) do not carry automotive qualification. Selection of automotive-qualified parts is necessary for applications subject to automotive industry standards.

Q: What is the operating temperature range difference between the main part and substitutes?

A: The 1N5264B-TP operates from -55°C to 150°C. All active substitute parts (1N5264B-TAP, 1N5264B-TR, 1N5264BDO35, 1N5264C-TAP, 1N5264C-TR, and 1N5088) operate from -65°C to 175°C. The extended temperature range of substitute parts provides improved thermal margin for applications operating at temperature extremes.

Q: Can packaging format affect circuit performance?

A: Packaging format (cut tape, tape and reel, tape and box, or bulk) does not affect electrical performance. All formats contain identical die and lead configuration. Packaging selection is determined by production volume, assembly automation requirements, and inventory management practices.

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