Equivalent & Substitute Parts for SMBJ5367A/TR13 Zener Diode

Part Overview

SMBJ5367A/TR13 by Microchip Technology is an active Zener Diode, featuring a 43 V nominal zener voltage, 5 W maximum power dissipation, and ±10% tolerance in a surface-mount DO-214AA (SMBJ) package intended for general-purpose voltage regulation. Finding alternative models is necessary for sourcing flexibility, ensuring continued supply, and addressing compliance requirements (specifically, this unit is RoHS non-compliant). The substitutes listed are within the same category (Diodes, Zener), feature comparable voltage ratings, and utilize an identical package configuration.

Key Parameters

Parameter	Main Part (SMBJ5367A/TR13)	Notes
Voltage - Zener (Nom) (Vz)	43 V	Core functional requirement for substitution
Power - Max	5 W	Determines dissipation capability
Tolerance	±10%	Affects voltage precision
Impedance (Max) (Zzt)	20 Ohms	Impacts voltage regulation stability
Current - Reverse Leakage @ Vr	500 nA @ 31 V	Reverse current under specified voltage
Operating Temperature	-65°C ~ 150°C	Environmental rating
Mounting Type	Surface Mount	Matches board-level requirements
Package / Case	DO-214AA, SMB	Ensures footprint compatibility
RoHS Status	RoHS non-compliant	Compliance with environmental directives

Substitute Part Grouping Explanation

Strict substitution was determined based on the following allowed electrical and mechanical parameters: Voltage - Zener (Nom), Power - Max, Tolerance, Impedance (Max), Current - Reverse Leakage at nominal voltage, Operating Temperature range, Mounting Type, and Package / Case. Only Zener diodes meeting the voltage and package specifications were considered. Any deviation in power rating, tolerance, or impedance is explicitly noted for engineering evaluation. All substitutes presented have active product status.

Parameter Comparison

Parameter	SMBJ5367A/TR13 (Microchip Technology)	1SMB5940BT3G (onsemi)	SZ1SMB5940BT3G (onsemi)
Voltage - Zener (Nom) (Vz)	43 V	43 V	43 V
Power - Max	5 W	3 W	3 W
Tolerance	±10%	±5%	±5%
Impedance (Max) (Zzt)	20 Ohms	53 Ohms	53 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 31 V	1 µA @ 32.7 V	1 µA @ 32.7 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Automotive Grade	-	-	Automotive (AEC-Q101)

Engineering Selection Recommendations

Select SMBJ5367A/TR13 for applications requiring 5 W power rating and RoHS non-compliance. Choose 1SMB5940BT3G or SZ1SMB5940BT3G (onsemi) for RoHS-compliant alternatives at a lower 3 W rating with tighter voltage tolerance and increased impedance. SZ1SMB5940BT3G provides AEC-Q101 automotive qualification where required by specification. All substitute parts use the DO-214AA, SMB package and are suitable for surface-mount implementation.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters for substituting Zener diodes in this category?
A1: Core parameters are Voltage - Zener (Nom), Power - Max, Tolerance, Impedance (Max), Reverse Leakage Current, Operating Temperature, Mounting Type, and Package / Case.

Q2: Is there any difference in board layout when switching between these substitutes?
A2: No, all listed parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical compatibility.

Q3: Why is RoHS compliance significant in selecting substitutes?
A3: RoHS status affects regulatory compliance in environmentally controlled markets. Substitute parts offer ROHS3 compliance for such requirements.

Q4: Is automotive qualification relevant for these Zener diodes?
A4: SZ1SMB5940BT3G provides AEC-Q101 automotive qualification as indicated in the provided parameters, suitable for automotive industry specifications.

Q5: Does the change in maximum power rating between SMBJ5367A/TR13 and substitutes impact circuit performance?
A5: The difference in power rating is strictly determined by the provided parameter (5 W vs 3 W). Selection must match the application's power dissipation requirements according to furnished parameters.

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