SMBJ4763A/TR13 Zener Diode Equivalent & Substitute Parts Reference

Part Overview

The SMBJ4763A/TR13 is a surface-mount Zener diode rated at 91 V nominal Zener voltage and 2 W maximum power dissipation, packaged in DO-214AA (SMBJ). It is an active product suited for voltage regulation and protection applications. Alternative models are necessary in scenarios involving supply constraints, compliance requirements, or extended qualification needs while maintaining strict adherence to electrical and mechanical parameters.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Packaging	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Product Status	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status
SMBJ4763A/TR13	Microchip Technology	Diodes, Zener	Tape & Reel (TR)	91 V	2 W	250 Ohms	5 µA @ 69.2 V	1.2 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	SMBJ (DO-214AA)	Active	RoHS non-compliant	1 (Unlimited)	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the SMBJ4763A/TR13 are selected only if they match the following key parameters: nominal Zener voltage (Vz), mounting type, package/case, and maximum operating temperature range. Additional compatibility is assured if impedance (Zzt), power rating, and reverse leakage characteristics are within the required electrical specifications, and the part status is active. Compliance details such as RoHS and REACH status, and Moisture Sensitivity Level (MSL) are included to ensure suitability for regulated applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Product Status	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status
SMBJ4763A/TR13	Microchip Technology	91 V	2 W	250 Ohms	5 µA @ 69.2 V	1.2 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	Active	RoHS non-compliant	1 (Unlimited)	REACH Unaffected
SZ1SMB5948BT3G	onsemi	91 V	3 W	200 Ohms	1 µA @ 69.2 V	1.5 V @ 200 mA	-65°C ~ 150°C	Surface Mount	DO-214AA, SMB	Active	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

Both SMBJ4763A/TR13 and SZ1SMB5948BT3G are active Zener diode products with matching electrical and mechanical parameters, including voltage rating, package type, mounting style, and operating temperature range. The substitute SZ1SMB5948BT3G offers compliance to ROHS3, AEC-Q101 automotive qualification, and REACH unaffected status, meeting additional regulatory requirements not covered by SMBJ4763A/TR13. Both diodes have an MSL rating of 1 (unlimited), confirming suitability for standard surface-mount assembly processes.

Frequently Asked Questions (FAQ)

Q1: What criteria determine Zener diode equivalence for SMBJ4763A/TR13?
A1: Substitution is determined strictly by matching voltage rating, power rating, impedance, reverse leakage current, mounting type, package/case, and operating temperature range.

Q2: Is the mechanical package identical between SMBJ4763A/TR13 and SZ1SMB5948BT3G?
A2: Both models use the DO-214AA (SMB) case and are surface-mount type.

Q3: How do I confirm RoHS and REACH compliance for substitute parts?
A3: RoHS status and REACH status are specified for each part; SZ1SMB5948BT3G is ROHS3 compliant and REACH unaffected.

Q4: Does substituting affect assembly and moisture sensitivity requirements?
A4: Both parts have MSL 1 (Unlimited), indicating equivalence in handling and assembly compatibility.

Q5: Are operating temperature ranges maintained with the substitute?
A5: Both the main part and the substitute operate within the -65°C to 150°C range.

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