SMBJ5942A/TR13 Equivalent & Substitute Parts Reference

Part Overview

The SMBJ5942A/TR13 is a Zener Diode by Microchip Technology, positioned in the Diodes, Zener category. It features a Zener voltage of 51 V, power rating of 2 W, and ±10% tolerance, supplied in a DO-214AA (SMBJ) surface mount package. As an active part, it is essential in circuit protection and voltage regulation applications. The need for alternative models arises due to requirements for enhanced availability, RoHS compliance, inventory optimization, or consistency in supply chain management.

Substiute Parts

SMBJ5942A/TR13

Microchip TechnologyIn Stock: 812SMBJ5942A/TR13 Datasheet

Current PartRFQ

1SMB5942BT3G

onsemiIn Stock: 201671SMB5942BT3G Datasheet

SimilarRFQ

SZ1SMB5942BT3G

onsemiIn Stock: 3085SZ1SMB5942BT3G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are selected exclusively on matching Zener voltage, package type, mounting method, impedance, reverse leakage current, and operating temperature range. The tolerance and power rating are compared for compatibility. The physical package (DO-214AA, SMB), supplier device package, surface mount format, and Zener voltage (51 V) are held constant for all substitute parts. Only products that fulfill these explicit criteria and are listed as active are considered in the equivalent and substitute group.

Parameter Comparison

Engineering Selection Recommendations

Choose replacement parts only from those listed as “Active.” For applications requiring RoHS compliance, select parts designated as “ROHS3 Compliant,” such as 1SMB5942BT3G and SZ1SMB5942BT3G. All compared parts have compatible mounting style, package, Zener voltage, and operating temperature, matching critical mechanical and electrical parameters for safe substitution.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting the SMBJ5942A/TR13 Zener diode?
A1: The primary substitution criteria include Zener voltage of 51 V, equivalent tolerance, matching or higher power rating, identical DO-214AA (SMB) package, surface mount format, and matching or lower reverse leakage current.

Q2: How important is RoHS compliance when selecting a substitute Zener diode?
A2: RoHS status is crucial for environments requiring lead-free or hazardous substance restrictions. Select “ROHS3 Compliant” parts such as 1SMB5942BT3G or SZ1SMB5942BT3G when compliance is mandated.

Q3: Can a device with a higher maximum power rating be substituted for a lower-rated original?
A3: Yes, provided all other parameters match, a higher maximum power rating is acceptable within the strict comparisons outlined.

Q4: Will substituting using a different supplier device package name affect compatibility?
A4: No, so long as the physical dimensions (DO-214AA, SMB) are identical, differing supplier nomenclature does not affect mechanical compatibility.

Q5: Are substitutions valid across all mounting and environmental requirements?
A5: All listed substitute parts are surface mount and have an identical operating temperature range as the main part; therefore, mechanical and environmental compatibility is maintained as per the provided parameters.