SMBJ5342AE3/TR13 Equivalent & Substitute Parts Engineering Reference

Part Overview

The SMBJ5342AE3/TR13 from Microchip Technology is an active Zener Diode in the Diodes, Zener category, with a nominal Zener voltage of 6.8 V, designed for surface mount applications using the DO-214AA (SMBJ) package. The need to identify alternative models arises from supply chain continuity, inventory limitations, or standardized product groupings, ensuring compliance with key electrical and mechanical requirements.

Key Parameters

Parameter	Main Part (SMBJ5342AE3/TR13)	Substitute (1SMB5921B-13)
Manufacturer	Microchip Technology	Diodes Incorporated
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	6.8 V	6.8 V
Tolerance	±10%	±5%
Power - Max	5 W	3 W
Impedance (Max) (Zzt)	1 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 4.9 V	5 µA @ 5.2 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)	SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050
Product Status	Active	Active

Substitute Part Grouping Explanation

For Zener diodes in the DO-214AA, SMB package category, substitutes must match in voltage rating, operating temperature, and mounting type. Tolerance, power rating, impedance, reverse leakage, and forward voltage are included for functional adequacy but may differ slightly within product family standards. Compliance requirements such as RoHS, MSL, REACH, ECCN, and HTSUS must align for regulatory compatibility.

Parameter Comparison

Parameter	SMBJ5342AE3/TR13	1SMB5921B-13
Voltage - Zener (Nom)	6.8 V	6.8 V
Tolerance	±10%	±5%
Power - Max	5 W	3 W
Impedance (Max)	1 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 4.9 V	5 µA @ 5.2 V
Voltage - Forward (Max) @ If	1.2 V @ 1 A	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050
Product Status	Active	Active

Engineering Selection Recommendations

Both SMBJ5342AE3/TR13 and 1SMB5921B-13 are listed as active and stocked products, with ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), REACH unaffected, ECCN EAR99, and matching HTSUS codes. These compliance attributes and product status allow substitution within system bill of materials and regulatory frameworks for Zener diodes in the DO-214AA, SMB package category.

Frequently Asked Questions (FAQ)

Q: What are the key matching parameters for substituting a Zener diode like SMBJ5342AE3/TR13?
A: The key matching parameters are voltage rating, package type (DO-214AA, SMB), mounting type (surface mount), operating temperature range, RoHS, MSL, REACH, ECCN, and HTSUS compliance.

Q: Is the substitute part 1SMB5921B-13 in the same package and mounting type as the main part?
A: Yes, both SMBJ5342AE3/TR13 and 1SMB5921B-13 are surface mount devices in the DO-214AA, SMB package category.

Q: Are tolerance, power rating, and impedance differences allowed in substitutions?
A: Substitution is based strictly on the provided category parameters. Differences in tolerance, power rating, and impedance between the main and substitute parts are visible and must be evaluated according to the provided values.

Q: Do both parts meet RoHS and REACH compliance?
A: Both SMBJ5342AE3/TR13 and 1SMB5921B-13 are ROHS3 compliant and REACH unaffected.

Q: Do these Zener diodes share identical inventory and product status?
A: Both are listed as active components and are available in stock per the provided inventory count.

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