Equivalent & Substitute Parts for SMBJ5341A/TR13 Zener Diode

Part Overview

SMBJ5341A/TR13 from Microchip Technology is a surface mount Zener diode with a Zener voltage of 6.2 V, designed for applications requiring voltage regulation and surge suppression. The device is rated for 5 W power dissipation and provides ±10% voltage tolerance in an SMBJ (DO-214AA) package. The component is RoHS non-compliant but is currently an active product. It is necessary to consider alternative Zener diode models where improved tolerance, RoHS compliance, or inventory accessibility is critical, or when exact electrical and mechanical equivalence is required for drop-in replacement.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	6.2 V
Tolerance	±10%
Power - Max	5 W
Impedance (Max) (Zzt)	1 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 3 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for SMBJ5341A/TR13 are grouped strictly by matching the following electrical and mechanical parameters: Zener voltage (6.2 V), package (DO-214AA, SMB), mounting type (Surface Mount), maximum operating temperature, and similar or improved tolerance and power dissipation ratings. Substitution only includes parts where all relevant parameters provided remain equal or within the limits specified for the product category.

Key parameters referenced:

Voltage - Zener (Nom) (Vz)
Tolerance
Power - Max
Impedance (Max) (Zzt)
Current - Reverse Leakage @ Vr
Voltage - Forward (Vf) (Max) @ If
Operating Temperature
Package / Case
Mounting Type

Parameter Comparison

Parameter	SMBJ5341A/TR13 Microchip Technology	SMBJ5341BE3/TR13 Microchip Technology	1SMB5920B-13 Diodes Incorporated
Voltage - Zener (Nom) (Vz)	6.2 V	6.2 V	6.2 V
Tolerance	±10%	±5%	±5%
Power - Max	5 W	5 W	3 W
Impedance (Max) (Zzt)	1 Ohms	1 Ohms	2 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 3 V	1 µA @ 3 V	5 µA @ 4 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.2 V @ 1 A	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

Engineering Selection Recommendations

SMBJ5341A/TR13 and SMBJ5341BE3/TR13 are both active status products in the Zener diode category with electrically equivalent key parameters and identical mechanical packaging. SMBJ5341BE3/TR13 differs in improved voltage tolerance (±5%) and is ROHS3 compliant. 1SMB5920B-13 matches the nominal Zener voltage and form factor but offers lower maximum power dissipation (3 W), higher maximum impedance (2 Ohms), and higher specified reverse leakage and forward voltage conditions. Only SMBJ5341BE3/TR13 matches all critical electrical characteristics and compliance improvements. Select based on required tolerance, RoHS compliance, and product availability as per inventory demand.

Frequently Asked Questions (FAQ)

Q1: What are the main criteria for accepting a Zener diode as an equivalent or substitute in this category?
A1: Main criteria include matching Zener voltage (6.2 V), package type (DO-214AA, SMB), mounting method (surface mount), and equivalent or improved tolerance and power rating.

Q2: Is SMBJ5341BE3/TR13 a direct drop-in replacement for SMBJ5341A/TR13?
A2: SMBJ5341BE3/TR13 is a drop-in equivalent based on electrical parameters, package, and mounting. It has a tighter voltage tolerance (±5%) and meets RoHS3 compliance.

Q3: Can 1SMB5920B-13 be used as a form-factor equivalent?
A3: 1SMB5920B-13 shares the same SMB package and Zener voltage but has lower power dissipation, higher impedance, and higher leakage and forward voltage ratings.

Q4: Why is RoHS status important in substitution decisions?
A4: RoHS status affects material compliance for specific regulations. Some applications or markets require RoHS-compliant parts; selection must align with end-use compliance needs.

Q5: Are mounting and package the same for all compared Zener diodes?
A5: All compared Zener diodes use the DO-214AA, SMB surface-mount package, ensuring compatibility for PCB assembly.

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