Equivalent & Substitute Parts for SMBJ5923A/TR13 Zener Diode

Part Overview

The Microchip Technology SMBJ5923A/TR13 is an active Zener diode designed for voltage stabilization applications, featuring a nominal Zener voltage of 8.2 V and a maximum power dissipation of 2 W. The component is packaged in a DO-214AA (SMBJ) surface-mount form factor and is currently available as new original stock. Finding alternative models may be necessary to address supply chain requirements, compliance needs, or inventory preferences.

Key Parameters

Parameter	SMBJ5923A/TR13
Voltage - Zener (Nom) (Vz)	8.2 V
Tolerance	±10%
Power - Max	2 W
Impedance (Max) (Zzt)	3.5 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 6.5 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB

Substitute Part Grouping Explanation

Substitute parts for Zener diodes in the DO-214AA (SMB) category are grouped strictly based on electrical and mechanical parity. The only permitted selection factors are the nominal Zener voltage, tolerance, maximum power rating, maximum impedance, reverse leakage current, forward voltage specification, thermal range, mounting type, and package/case. Substitute parts presented match these parameters within allowed ranges as specified per product data.

Parameter Comparison

Parameter	SMBJ5923A/TR13	CZRB5344B-HF
Voltage - Zener (Nom) (Vz)	8.2 V	8.2 V
Tolerance	±10%	±5%
Power - Max	2 W	5 W
Impedance (Max) (Zzt)	3.5 Ohms	1.5 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 6.5 V	10 µA @ 6.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB

Engineering Selection Recommendations

SMBJ5923A/TR13 is RoHS non-compliant, while CZRB5344B-HF holds ROHS3 compliance status. Both devices possess REACH unaffected status and ECCN EAR99 classification. Moisture Sensitivity Level for both is 1 (Unlimited), ensuring compatibility for storage and reflow procedures. Certification status should be matched to project requirements and local regulations when selecting substitutes in regulated environments.

Frequently Asked Questions (FAQ)

Q: What are the key electrical parameters to consider when substituting Zener diodes in the SMB (DO-214AA) category?
A: The permitted parameters are Zener voltage, tolerance, maximum power, impedance, reverse leakage current, forward voltage, operating temperature, mounting type, and package/case.

Q: Is package compatibility mandatory for substitution decisions?
A: Yes. Only substitutes matching the DO-214AA (SMB) package and surface-mount configuration are presented.

Q: How does tolerance affect interchangeability?
A: Tolerance determines the allowed variation from nominal Zener voltage. Substitute parts must meet the application's accuracy requirements as defined by the permitted input parameters.

Q: Are all substitutes RoHS compliant?
A: RoHS compliance status differs as stated. For instance, CZRB5344B-HF is ROHS3 compliant, whereas SMBJ5923A/TR13 is not.

Q: What is the significance of Moisture Sensitivity Level (MSL) in selection?
A: Both main and substitute parts are rated MSL 1 (Unlimited), ensuring they are suitable for standard mounting and storage practices.

Q: Can substitute parts with higher maximum power be used?
A: Substitution is allowed within specified power and package constraints. CZRB5344B-HF offers higher maximum power at 5 W compared to 2 W for SMBJ5923A/TR13.

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