SMBJ24A Equivalent & Substitute Parts

Part Overview

The SMBJ24A is a unidirectional Zener transient voltage suppressor (TVS) diode in DO-214AA (SMB) surface mount package, manufactured by Micro Commercial Co. This component is designed for general-purpose transient voltage suppression applications with a 24V reverse standoff voltage and 38.9V maximum clamping voltage. The part is active in production status and widely available in inventory across multiple manufacturers and distributors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing is required for supply chain resilience, or when design flexibility permits selection from multiple qualified manufacturers offering identical electrical and mechanical specifications.

Substiute Parts

SMBJ24A-TP

Micro Commercial CoIn Stock: 6405SMBJ24A-TP Datasheet

Current PartRFQ

1SMB24A TR13 PBFREE

Central Semiconductor CorpIn Stock: 15781SMB24A TR13 PBFREE Datasheet

DirectRFQ

SMBJ24A

MDDIn Stock: 41210SMBJ24A Datasheet

DirectRFQ

SMBJ24A

MDDIn Stock: 41210SMBJ24A Datasheet

DirectRFQ

SMBJ24A

MDDIn Stock: 41210SMBJ24A Datasheet

DirectRFQ

SMBJ24A-13-F

Diodes IncorporatedIn Stock: 2457SMBJ24A-13-F Datasheet

DirectRFQ

SMBJ24A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3816SMBJ24A-E3/52 Datasheet

DirectRFQ

SMBJ24A-TR

STMicroelectronicsIn Stock: 1704SMBJ24A-TR Datasheet

SimilarRFQ

SZ1SMB24AT3G

Littelfuse Inc.In Stock: 208416SZ1SMB24AT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ24A is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 38.9V
• Current - Peak Pulse (10/1000µs): 15.4A ± tolerance
• Power - Peak Pulse: 600W
• Unidirectional Channels: 1
• Type: Zener

Mechanical Equivalence Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the SMBJ24A-TP in applications requiring 24V TVS diode protection.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active production components with ROHS3 compliance and MSL 1 rating, meeting the same regulatory and environmental requirements as the primary SMBJ24A-TP part.

Direct Electrical Equivalents (15.4A Peak Pulse Current):

• 1SMB24A TR13 PBFREE (Central Semiconductor Corp)
• SMBJ24A-13-F (Diodes Incorporated)
• SMBJ24A-E3/52 (Vishay General Semiconductor - Diodes Division)
• SZ1SMB24AT3G (Littelfuse Inc.)

Functionally Equivalent with Minor Current Tolerance (15.5A - 16A Peak Pulse Current):

• SMBJ24A (MDD) — 15.5A peak pulse current
• SMBJ24A-TR (STMicroelectronics) — 16A peak pulse current

All parts maintain the critical voltage parameters (24V standoff, 26.7V breakdown, 38.9V clamping) and 600W peak pulse power rating. Selection among these alternatives may be based on availability, packaging format preference (Tape & Reel vs. Cut Tape), or specific temperature range requirements for the application.

Frequently Asked Questions (FAQ)

Q: Can SMBJ24A parts from different manufacturers be used interchangeably?

A: Yes. All listed substitute parts meet identical electrical specifications for reverse standoff voltage (24V), breakdown voltage (26.7V), clamping voltage (38.9V), and peak pulse power (600W). They share the same DO-214AA (SMB) package and surface mount configuration, making them mechanically and electrically interchangeable.

Q: What is the difference between SMBJ24A-TP and SMBJ24A?

A: The "-TP" suffix indicates Tape & Reel packaging format supplied by Micro Commercial Co. The base part number SMBJ24A from other manufacturers (such as MDD) refers to the same electrical component but may be supplied in different packaging formats. Electrical specifications remain identical.

Q: Are there any temperature range limitations when substituting parts?

A: The primary SMBJ24A-TP operates from -55°C to 175°C. Most substitute parts operate within -55°C to 150°C or -65°C to 150°C ranges. For applications requiring the full -55°C to 175°C range, verify the substitute part's operating temperature specification against your design requirements.

Q: What does the current specification difference (15.4A vs. 15.5A vs. 16A) mean for substitution?

A: Peak pulse current ratings of 15.4A, 15.5A, and 16A are within normal manufacturing tolerance for this device category and do not affect substitutability. All parts maintain the same 600W peak pulse power rating and voltage clamping characteristics.

Q: Is the SZ1SMB24AT3G suitable for automotive applications?

A: The SZ1SMB24AT3G carries AEC-Q101 automotive qualification and is graded for automotive use. Other parts in this list are general-purpose components. If automotive qualification is required, SZ1SMB24AT3G is the appropriate selection.

Q: Can I mix packaging formats (Tape & Reel vs. Cut Tape) in production?

A: Yes. Packaging format differences (Tape & Reel, Cut Tape, Digi-Reel) do not affect electrical or mechanical compatibility. Selection is based on assembly process requirements and inventory management preferences.