Equivalent & Substitute Parts for SMBJ5352B/TR13 Zener Diode

Part Overview

The SMBJ5352B/TR13 from Microchip Technology is an active surface mount Zener diode rated for 15 V (nominal), 5 W power dissipation, with ±5% voltage tolerance. It is packaged in DO-214AA (SMBJ) format and is intended for applications needing voltage regulation and surge protection. Locating alternate models is essential for maintaining supply chain resilience, assuring compliance requirements, and managing inventory strategies, especially when specific compliance (RoHS, REACH) or inventory status is a procurement constraint.

Key Parameters

Parameter	Main Part (SMBJ5352B/TR13)	Allowed Range for Substitutes
Manufacturer	Microchip Technology	Direct Equivalent Only
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	15 V	15 V
Tolerance	±5%	±5%
Power - Max	5 W	5 W
Impedance (Max) (Zzt)	2.5 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 10.8 V	1 µA @ 10.8 – 11.5 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.2 V @ 1 mA – 1 A
Operating Temperature	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB	DO-214AA, SMB
Supplier Device Package	SMBJ (DO-214AA)	DO-214AA (SMB/SMBJ)
Product Status	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Substitute Part Grouping Explanation

Substitute selection for Zener diodes in the DO-214AA/SMB package is determined by strict matching of electrical parameters, mechanical packaging, and compliance/certification status. All candidate substitutes must have matching nominal Zener voltage, tolerance, maximum power, and similar thermal and leakage specifications. Compatibility is further validated by identical surface-mount package type and supplier device designation, along with equivalent moisture sensitivity level and product status.

Parameter Comparison

Parameter	Main Part (SMBJ5352B/TR13)	Substitute Part (SMBJ5352B-TP)
Manufacturer	Microchip Technology	Micro Commercial Co
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	15 V	15 V
Tolerance	±5%	±5%
Power - Max	5 W	5 W
Impedance (Max) (Zzt)	2.5 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 10.8 V	1 µA @ 11.5 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1 A	1.2 V @ 1 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
Supplier Device Package	SMBJ (DO-214AA)	DO-214AA (SMB)
Product Status	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Selection between SMBJ5352B/TR13 and SMBJ5352B-TP can be made strictly based on product status (Active) and RoHS/REACH compliance. SMBJ5352B-TP provides ROHS3 compliance, which may be required for certain applications or regions. Both parts are listed as REACH Unaffected and meet MSL 1 criteria. Inventory status and compliance certifications are sufficient decision points for substitution where regulatory requirements exist.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting Zener diodes in the DO-214AA, SMB package?
A1: Key substitution parameters include nominal Zener voltage, tolerance, power rating, impedance, leakage current, operating temperature range, package type, and compliance certifications.

Q2: Is SMBJ5352B-TP compatible with the same PCB footprint as SMBJ5352B/TR13?
A2: Both are in the DO-214AA, SMB surface mount package, ensuring mechanical compatibility.

Q3: Are there compliance differences that should be noted?
A3: SMBJ5352B/TR13 is RoHS non-compliant; SMBJ5352B-TP is ROHS3 compliant. Both are REACH Unaffected.

Q4: What are the implications of the difference in reverse leakage voltage test points?
A4: The specified reverse leakage is measured at different voltages (10.8 V vs. 11.5 V) per provided data. Both meet the 1 µA maximum at the respective specified voltages.

Q5: Are other substitute part numbers available?
A5: Only SMBJ5352B-TP is listed as a substitute in the provided data. No additional part numbers are provided.

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