SMBJ5937A/TR13 Equivalent & Substitute Parts Reference

Part Overview

SMBJ5937A/TR13 from Microchip Technology is a Zener diode classified under the Diodes, Zener category. It features a 33 V Zener voltage, 2 W maximum power, ±10% tolerance, and is housed in a DO-214AA, SMB surface-mount package. The product status is Active, with 1024 units available. Finding alternative models within the same category is essential for maintaining supply flexibility, addressing sourcing needs, and ensuring production continuity.

Substiute Parts

SMBJ5937A/TR13

Microchip TechnologyIn Stock: 1116SMBJ5937A/TR13 Datasheet

Current PartRFQ

1SMB5937BT3G

onsemiIn Stock: 1129521SMB5937BT3G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute Zener diodes are grouped if they match the following strictly defined parameters:

• Voltage - Zener (Nom) (Vz): 33 V
• Power - Max: Equal to or greater than 2 W
• Tolerance: Equal to or tighter than ±10%
• Impedance (Max) (Zzt): 33 Ohms
• Current - Reverse Leakage @ Vr: 1 µA @ 25.1 V
• Voltage - Forward (Vf) (Max) @ If: No greater than substitute’s spec
• Operating Temperature: -65°C ~ 150°C
• Mounting Type and Package: Surface Mount, DO-214AA, SMB
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Only manufacturers and part numbers meeting all these constraints are listed as substitutes.

Parameter Comparison

Engineering Selection Recommendations

Select substitute parts based on product status (Active), compliance requirements (such as RoHS and REACH status), and inventory needs. SMBJ5937A/TR13 is RoHS non-compliant, while 1SMB5937BT3G is ROHS3 compliant. Both diodes have identical electrical ratings in key substitution parameters and meet the mounting and packaging requirements. Moisture Sensitivity Level (MSL 1) is identical for both. Use the compliance status to align with project or regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: What key parameters are required to substitute a Zener diode in the DO-214AA, SMB package?
A1: Voltage - Zener (Nom) (Vz), Power - Max, Tolerance, Impedance (Zzt), Current - Reverse Leakage, Operating Temperature, Mounting Type, and Package / Case must all strictly match or exceed the original device specifications.

Q2: Can 1SMB5937BT3G be used as a substitute for SMBJ5937A/TR13?
A2: 1SMB5937BT3G matches all specified electrical, mechanical, and thermal parameters. Both components share the same Zener voltage, package, and operating temperature range.

Q3: Are there RoHS compliance differences between the alternatives?
A3: SMBJ5937A/TR13 is RoHS non-compliant, whereas 1SMB5937BT3G is ROHS3 compliant. Consider compliance requirements for final product certification and market access.

Q4: Do package codes and mounting methods affect substitutability?
A4: Both SMBJ5937A/TR13 and 1SMB5937BT3G are surface-mount devices in DO-214AA, SMB packages, ensuring compatible board footprint and assembly processes.

Q5: Are the parts similar in terms of Moisture Sensitivity Level (MSL)?
A5: Both parts are MSL 1 (Unlimited), allowing similar handling and storage conditions.