1SMB13CAT3G Equivalent & Substitute Parts

Part Overview

The 1SMB13CAT3G is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 13V reverse standoff voltage with a 21.5V maximum clamping voltage and 27.9A peak pulse current capability in the DO-214AA (SMB) package format. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

1SMB13CAT3G

LittelfuseIn Stock: 124051SMB13CAT3G Datasheet

Current PartRFQ

SMBJ13CA

MDDIn Stock: 20484SMBJ13CA Datasheet

MFR RecommendedRFQ

SMBJ13CA-HR

LittelfuseIn Stock: 1198SMBJ13CA-HR Datasheet

MFR RecommendedRFQ

SMBJ13CA-HRA

Littelfuse Inc.In Stock: 687SMBJ13CA-HRA Datasheet

MFR RecommendedRFQ

TV06B130JB-G

Comchip TechnologyIn Stock: 1057TV06B130JB-G Datasheet

DirectRFQ

SMBJ13CA

MDDIn Stock: 20484SMBJ13CA Datasheet

MFR RecommendedRFQ

SMBJ13CA

MDDIn Stock: 20484SMBJ13CA Datasheet

MFR RecommendedRFQ

SMBJ13CA-13-F

Diodes IncorporatedIn Stock: 5427SMBJ13CA-13-F Datasheet

MFR RecommendedRFQ

SMBJ13CA-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1119SMBJ13CA-M3/52 Datasheet

MFR RecommendedRFQ

SMBJ13CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1096SMBJ13CA-M3/5B Datasheet

MFR RecommendedRFQ

SMBJ13CA-TP

Micro Commercial CoIn Stock: 1563SMBJ13CA-TP Datasheet

MFR RecommendedRFQ

SMBJ13CA-TR

STMicroelectronicsIn Stock: 12810SMBJ13CA-TR Datasheet

MFR RecommendedRFQ

SMBJ13CAE3/TR13

Microchip TechnologyIn Stock: 1043SMBJ13CAE3/TR13 Datasheet

MFR RecommendedRFQ

SMBJ13CE3/TR13

Microchip TechnologyIn Stock: 999SMBJ13CE3/TR13 Datasheet

MFR RecommendedRFQ

TV06B130JB-HF

Comchip TechnologyIn Stock: 958TV06B130JB-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1SMB13CAT3G is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 13V
• Voltage - Breakdown (Min): 14.4V
• Voltage - Clamping (Max) @ Ipp: 21.5V
• Current - Peak Pulse (10/1000µs): 27.9A ± tolerance
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• Applications: General Purpose

All identified substitute parts maintain these core electrical specifications within acceptable engineering tolerances. Peak pulse current values range from 27.9A to 28A, representing negligible variance in transient suppression capability. All substitutes are available in the DO-214AA (SMB) surface-mount package and are RoHS3 compliant with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the 1SMB13CAT3G and maintain identical electrical performance specifications. Selection among active alternatives should be based on:

Product Status: The original 1SMB13CAT3G is obsolete. All substitute parts listed carry active product status, ensuring long-term availability and manufacturing support.

Compliance & Certifications: All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original part's environmental qualifications. All parts carry EAR99 ECCN classification and REACH Unaffected status.

Manufacturer Availability: Littelfuse SMBJ13CA-HR and SMBJ13CA-HRA variants provide direct manufacturer continuity from the original supplier. MDD SMBJ13CA offers the highest current inventory (20,461 units). Vishay TransZorb® series (SMBJ13CA-M3/52 and SMBJ13CA-M3/5B) provide established alternative sourcing with proven reliability in general-purpose applications.

Packaging Considerations: All substitutes are supplied in DO-214AA (SMB) surface-mount package format, ensuring direct PCB footprint compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ13CA-HR replace 1SMB13CAT3G directly on the PCB?

A: Yes. Both parts use the DO-214AA (SMB) package with identical pinout and footprint. Electrical specifications are equivalent within engineering tolerance.

Q: What is the difference between SMBJ13CA variants from different manufacturers?

A: All SMBJ13CA variants (MDD, Littelfuse, Diodes, Vishay, Comchip, MCC) maintain the same core electrical specifications: 13V standoff, 21.5V clamping, 27.9-28A peak pulse current, and 600W peak power. Differences exist only in operating temperature ranges and packaging options (tape & reel vs. bulk). Selection depends on procurement availability and supply chain requirements.

Q: Is the 1SMB13CAT3G still available for purchase?

A: The 1SMB13CAT3G is listed as obsolete. Current inventory exists (12,394 units reported), but long-term availability is not guaranteed. Active substitute parts are recommended for new designs and ongoing production.

Q: Do all substitutes support the same operating temperature range?

A: Operating temperature ranges vary slightly among substitutes. The original 1SMB13CAT3G operates -65°C to 150°C. Most substitutes operate -55°C to 150°C or -50°C to 150°C. SMBJ13CA-TP extends to 175°C. Verify the specific operating temperature requirement for your application before selection.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental qualifications.

Q: What packaging options are available for substitutes?

A: Most substitutes are available in tape & reel (TR) packaging for automated assembly. MDD SMBJ13CA is available in standard packaging. All maintain the DO-214AA (SMB) component package format.