SZ1SMB58CAT3G Equivalent & Substitute Parts

Part Overview

The SZ1SMB58CAT3G is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AA (SMB) package. This component provides 58V reverse standoff voltage with 93.6V maximum clamping voltage and 6.4A peak pulse current capability, delivering 600W peak pulse power dissipation. The part is AEC-Q101 qualified for automotive applications and maintains active product status with full RoHS3 compliance.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and manufacturing optimization while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

SZ1SMB58CAT3G

Littelfuse Inc.In Stock: 3187SZ1SMB58CAT3G Datasheet

Current PartRFQ

SMBJ58CA

Good-Ark SemiconductorIn Stock: 22027SMBJ58CA Datasheet

MFR RecommendedRFQ

SMBJ58CA-TP

Micro Commercial CoIn Stock: 77773SMBJ58CA-TP Datasheet

UpgradeRFQ

SMBJ58CA

Good-Ark SemiconductorIn Stock: 22027SMBJ58CA Datasheet

MFR RecommendedRFQ

SMBJ58CA

Good-Ark SemiconductorIn Stock: 22027SMBJ58CA Datasheet

MFR RecommendedRFQ

SMBJ58CA-13-F

Diodes IncorporatedIn Stock: 38112SMBJ58CA-13-F Datasheet

MFR RecommendedRFQ

SMBJ58CA-TR

STMicroelectronicsIn Stock: 17816SMBJ58CA-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SZ1SMB58CAT3G is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 58V
• Voltage - Breakdown (Min): 64.4V
• Voltage - Clamping (Max) @ Ipp: 93.6V
• Current - Peak Pulse (10/1000µs): 6.4A minimum
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Type: Zener
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts maintain these electrical specifications and package requirements. Operating temperature range variations are permitted within the specified limits. Substitute parts are sourced from qualified manufacturers with active product status and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain full electrical equivalence to the SZ1SMB58CAT3G across critical transient voltage suppression parameters. Selection among equivalent parts should be based on:

Compliance and Certification: All substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols.

Operating Temperature: The SZ1SMB58CAT3G specifies -65 to 150°C operating range. The SMBJ58CA-TP (Micro Commercial) extends to -55 to 175°C, providing enhanced thermal margin for high-temperature applications. Other substitutes operate within -55 to 150°C, which is acceptable for most applications within the original specification window.

Peak Pulse Current: The SMBJ58CA-TR (STMicroelectronics) delivers 6.7A peak pulse current versus the 6.4A baseline, providing additional transient handling capacity without exceeding the 600W power dissipation limit.

Manufacturer Availability: All parts maintain active product status with established supply channels. Selection may be optimized based on lead time, inventory availability, and procurement cost within your supply chain.

Automotive Grade: The original SZ1SMB58CAT3G carries AEC-Q101 qualification. Substitute parts from Good-Ark, Micro Commercial, Diodes Incorporated, and STMicroelectronics are qualified for general-purpose applications and are suitable for non-automotive transient voltage suppression circuits.

Frequently Asked Questions (FAQ)

Q: Can SMBJ58CA-TP be used as a direct replacement for SZ1SMB58CAT3G?

A: Yes. The SMBJ58CA-TP maintains identical voltage specifications (58V standoff, 93.6V clamping), current rating (6.4A), power dissipation (600W), and package format (DO-214AA SMB). Operating temperature range extends to 175°C, providing additional thermal capability.

Q: What is the difference between SMBJ58CA and SMBJ58CA-TP?

A: Both parts are electrically equivalent with identical voltage and current ratings. SMBJ58CA is supplied in Cut Tape (CT) and Digi-Reel® packaging by Good-Ark Semiconductor. SMBJ58CA-TP is supplied in Tape & Reel (TR) format by Micro Commercial Co and supports extended operating temperature to 175°C.

Q: Is the SMBJ58CA-TR from STMicroelectronics compatible?

A: Yes. The SMBJ58CA-TR is fully compatible with identical voltage specifications and package format. Peak pulse current is rated at 6.7A, exceeding the 6.4A baseline while maintaining the 600W power dissipation limit. Operating temperature range is -55 to 150°C.

Q: Does operating temperature range affect substitution eligibility?

A: Operating temperature variations are permitted within the specified limits of each part. The original SZ1SMB58CAT3G operates -65 to 150°C. Substitute parts operating within -55 to 150°C are suitable for applications within this window. The SMBJ58CA-TP extends to 175°C for enhanced thermal margin in high-temperature environments.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity ratings, meeting standard environmental and manufacturing requirements.

Q: Can I mix different manufacturers in the same circuit board?

A: Yes. All substitute parts maintain identical electrical specifications, package format, and compliance certifications. Mixing manufacturers within the same design is permissible from an electrical and mechanical standpoint.

Q: What packaging formats are available?

A: The SZ1SMB58CAT3G is supplied in Tape & Reel (TR). Substitute parts are available in Cut Tape (CT) with Digi-Reel® (SMBJ58CA by Good-Ark) and Tape & Reel (TR) formats (SMBJ58CA-TP by Micro Commercial, SMBJ58CA-13-F by Diodes Inc., SMBJ58CA-TR by STMicroelectronics). Verify packaging format requirements for your manufacturing process.