1N5367B Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5367B is a 43 V, 5 W axial zener diode manufactured by onsemi in a T-18 through-hole package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design and procurement requirements. The 1N5367B operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and is RoHS non-compliant. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with variations in power rating, package type, or tolerance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	43	V
Power - Maximum	5	W
Tolerance	±5%	—
Impedance (Maximum)	20	Ohms
Current - Reverse Leakage @ Vr	500	nA @ 32.7 V
Voltage - Forward (Maximum) @ If	1.2	V @ 1 A
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	T-18, Axial	—

Substitute Part Grouping Explanation

Substitution of the 1N5367B is determined by the following critical parameters: zener voltage (43 V nominal), power dissipation capability, voltage tolerance, impedance characteristics, and mounting configuration. Parts are grouped into three categories based on substitution compatibility:

Direct Equivalents maintain all electrical specifications (43 V, 5 W, ±5% tolerance, 20 Ohms impedance) and through-hole axial mounting, differing only in product status, packaging format, or manufacturer source.

Functional Substitutes with Reduced Power Rating provide the same 43 V zener voltage and ±5% tolerance but with lower maximum power dissipation (1.5 W or 500 mW). These are suitable for applications where the full 5 W capability is not required.

Functional Substitutes with Tolerance Variation maintain 43 V zener voltage and 5 W power rating but with different tolerance specifications (±2%, ±10%, or ±20%). These are applicable where tolerance requirements differ from the original ±5% specification.

All substitute parts retain through-hole axial mounting and operate within compatible temperature ranges. Package variations (T-18, DO-15, DO-41, DO-35, DO-7) accommodate different PCB layout and assembly requirements while maintaining electrical function.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (W)	Tolerance	Zzt (Ohms)	Package	Product Status	Temp Range (°C)
1N5367B	onsemi	43	5	±5%	20	T-18, Axial	Obsolete	-65 to 200
1N5367BG	onsemi	43	5	±5%	20	T-18, Axial	Active	-65 to 200
1N5367B	Microsemi Corporation	43	5	±5%	20	T-18, Axial	Active	-65 to 150
1N4480	Microchip Technology	43	1.5	±5%	40	DO-41, Axial	Active	-65 to 175
1N4717	Microchip Technology	43	0.5	±5%	—	DO-7, Axial	Active	-65 to 175
1N5260	Microchip Technology	43	0.5	±5%	93	DO-35, Axial	Active	-65 to 175
1N5260A	Microchip Technology	43	0.5	±10%	93	DO-35, Axial	Active	-65 to 175
1N5367/TR12	Microchip Technology	43	5	±20%	20	T-18, Axial	Active	-65 to 150
1N5367/TR8	Microchip Technology	43	5	±20%	20	T-18, Axial	Active	-65 to 150
1N5367B-TP	Micro Commercial Co	43	5	±5%	20	DO-15, Axial	Active	-55 to 150
1N5367C/TR12	Microchip Technology	43	5	±2%	20	T-18, Axial	Active	-65 to 150

Engineering Selection Recommendations

Primary Equivalent Selection:

The 1N5367BG (onsemi) is the direct active equivalent to the obsolete 1N5367B. This part maintains identical electrical specifications (43 V, 5 W, ±5% tolerance, 20 Ohms impedance) and T-18 axial package configuration. The 1N5367BG is ROHS3 compliant and carries active product status, making it the preferred replacement for direct substitution in existing designs.

Alternative Equivalent from Microsemi Corporation:

The 1N5367B manufactured by Microsemi Corporation provides electrical equivalence with identical voltage, power, tolerance, and impedance specifications. This part is active and suitable for applications where the -65°C to 150°C operating range is acceptable (compared to the original -65°C to 200°C range).

Reduced Power Rating Substitutes:

The 1N4480 (Microchip Technology, 1.5 W) and 1N4717 (Microchip Technology, 500 mW) and 1N5260 (Microchip Technology, 500 mW) provide functional substitution where power dissipation requirements are lower than 5 W. These parts maintain the 43 V zener voltage and ±5% tolerance. Selection depends on circuit power requirements and available PCB space for different package types (DO-41, DO-7, DO-35).

Tolerance Variant Substitutes:

The 1N5367/TR12 and 1N5367/TR8 (Microchip Technology, ±20% tolerance) and 1N5367C/TR12 (Microchip Technology, ±2% tolerance) provide alternatives where tolerance specifications differ from the original ±5%. The ±2% variant offers tighter regulation for precision applications, while ±20% variants are suitable for general-purpose voltage regulation where tolerance is less critical.

Package Variant Substitute:

The 1N5367B-TP (Micro Commercial Co, DO-15 package) maintains full electrical equivalence (43 V, 5 W, ±5% tolerance) with ROHS3 compliance but in a different axial package format. This is applicable where DO-15 package footprint accommodates PCB layout requirements.

All recommended substitutes are active products with established supply chains. Selection should be based on specific application requirements for power dissipation, tolerance, operating temperature range, and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 1N5367BG directly replace the obsolete 1N5367B?

A: Yes. The 1N5367BG is a direct equivalent with identical electrical specifications (43 V, 5 W, ±5% tolerance, 20 Ohms impedance) and T-18 axial package. The primary difference is product status (active) and RoHS compliance (ROHS3). No circuit modifications are required.

Q: What is the difference between the 1N5367B and 1N5367/TR12?

A: Both parts share the same 43 V, 5 W specifications and T-18 package. The primary difference is voltage tolerance: 1N5367B has ±5% tolerance, while 1N5367/TR12 has ±20% tolerance. The 1N5367/TR12 is suitable for applications where tighter voltage regulation is not required.

Q: Can I use the 1N4717 (500 mW) instead of the 1N5367B (5 W)?

A: The 1N4717 maintains the same 43 V zener voltage and ±5% tolerance but with significantly reduced power dissipation capability (500 mW versus 5 W). Substitution is valid only if the circuit power requirements do not exceed 500 mW. The 1N4717 uses a DO-7 package, which differs from the T-18 package of the 1N5367B.

Q: What is the operating temperature difference between the 1N5367B (onsemi) and 1N5367B (Microsemi)?

A: The onsemi 1N5367B operates from -65°C to 200°C, while the Microsemi 1N5367B operates from -65°C to 150°C. For applications requiring operation above 150°C, the onsemi version is required.

Q: Is the 1N5367C/TR12 (±2% tolerance) suitable for precision voltage regulation?

A: Yes. The 1N5367C/TR12 provides ±2% voltage tolerance compared to ±5% for the standard 1N5367B. This tighter tolerance is applicable for precision voltage regulation circuits. All other electrical specifications (43 V, 5 W, 20 Ohms impedance) and T-18 package remain identical.

Q: What package types are available for 43 V, 5 W zener diodes?

A: The 43 V, 5 W zener diodes are available in T-18 (axial) and DO-15 (axial) packages. The T-18 package is the standard configuration for the 1N5367 series. The DO-15 package variant (1N5367B-TP) provides an alternative footprint for specific PCB layout requirements.

Q: Are all substitute parts RoHS compliant?

A: No. The original 1N5367B is RoHS non-compliant. The 1N5367BG (onsemi) and 1N5367B-TP (Micro Commercial Co) are ROHS3 compliant. Other substitutes (Microchip Technology parts) are RoHS non-compliant. RoHS compliance should be verified based on application requirements.

Q: Can I use the 1N5260 (DO-35 package) in place of the 1N5367B (T-18 package)?

A: The 1N5260 maintains the same 43 V zener voltage and ±5% tolerance but with reduced power rating (500 mW versus 5 W) and different package type (DO-35 versus T-18). Substitution is valid only if power requirements do not exceed 500 mW and the DO-35 package footprint is compatible with the PCB layout.

Q: What is the impedance difference between the 1N5367B and 1N5260?

A: The 1N5367B has 20 Ohms maximum impedance, while the 1N5260 has 93 Ohms maximum impedance. Lower impedance (1N5367B) provides better voltage regulation characteristics. Higher impedance (1N5260) is acceptable for applications with less stringent regulation requirements.

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