SMCJ58A-T7 Equivalent & Substitute Parts

Part Overview

The SMCJ58A-T7 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in DO-214AB surface mount package. This component provides transient overvoltage protection for general-purpose applications with a 58V reverse standoff voltage and 93.6V maximum clamping voltage at peak pulse current of 16.1A. The part is active in production status and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters and package compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

SMCJ58A-T7

Littelfuse Inc.In Stock: 999SMCJ58A-T7 Datasheet

Current PartRFQ

SMCJ58A

MDDIn Stock: 105205SMCJ58A Datasheet

MFR RecommendedRFQ

SMCJ58A-TP

Micro Commercial CoIn Stock: 7118SMCJ58A-TP Datasheet

DirectRFQ

3.0SMCJ58A-13

Diodes IncorporatedIn Stock: 112313.0SMCJ58A-13 Datasheet

MFR RecommendedRFQ

SMCJ58A

MDDIn Stock: 105205SMCJ58A Datasheet

MFR RecommendedRFQ

SMCJ58A

MDDIn Stock: 105205SMCJ58A Datasheet

MFR RecommendedRFQ

SMLJ58A

Bourns Inc.In Stock: 109955SMLJ58A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMCJ58A-T7 are grouped based on strict electrical parameter matching within the TVS diode category. The primary substitution criteria are:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 58V
• Voltage - Clamping (Max) @ Ipp: 93.6V
• Voltage - Breakdown (Min): 64.4V
• Package / Case: DO-214AB or SMC equivalent
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

Substitution Categories:

Direct Equivalents (Identical Electrical Performance): Parts matching all critical electrical parameters with identical peak pulse current of 16.1A and 1500W peak pulse power. These include SMCJ58A (MDD) and SMCJ58A-TP (Micro Commercial Co).

Enhanced Performance Substitutes (Higher Current Rating): Parts with identical voltage specifications but higher peak pulse current ratings (32A or 32.1A) and 3000W peak pulse power. These include 3.0SMCJ58A-13 (Diodes Incorporated) and SMLJ58A (Bourns Inc.). These parts provide superior transient protection capability while maintaining voltage compatibility.

All substitute parts maintain RoHS3 compliance, MSL Level 1 (Unlimited), and active production status.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): SMCJ58A (MDD) and SMCJ58A-TP (Micro Commercial Co) are direct functional equivalents to SMCJ58A-T7. Both maintain identical voltage parameters, peak pulse current of 16.1A, and 1500W power dissipation. All three parts are RoHS3 compliant and MSL Level 1. Selection between these options depends on packaging preference (Tape & Reel vs. bulk) and supplier availability. SMCJ58A-TP supports extended operating temperature to 175°C compared to the original 150°C maximum.

For Enhanced Protection Applications: 3.0SMCJ58A-13 (Diodes Incorporated) and SMLJ58A (Bourns Inc.) provide doubled peak pulse current capability (32A and 32.1A respectively) and 3000W peak pulse power while maintaining identical voltage clamping characteristics. These parts are suitable for applications requiring higher transient energy absorption. Both support extended temperature range to 175°C. SMLJ58A is REACH Affected; verify compliance requirements for your application.

Compliance Verification: All substitute parts maintain active production status, RoHS3 compliance, and MSL Level 1 moisture sensitivity. ECCN classification is EAR99 for all parts. Confirm REACH status requirements for your specific application, particularly for SMLJ58A (Bourns Inc.).

Frequently Asked Questions (FAQ)

Q: Can SMCJ58A-T7 be replaced with SMCJ58A (MDD)? A: Yes. Both parts have identical voltage specifications (58V standoff, 93.6V clamping), identical peak pulse current (16.1A), and identical power rating (1500W). Both are RoHS3 compliant surface mount DO-214AB packages. The primary difference is manufacturer and packaging format.

Q: What is the difference between direct equivalents and enhanced performance substitutes? A: Direct equivalents (SMCJ58A, SMCJ58A-TP) match all electrical parameters including 16.1A peak pulse current and 1500W power. Enhanced substitutes (3.0SMCJ58A-13, SMLJ58A) double the peak pulse current to 32A/32.1A and power to 3000W while maintaining identical voltage clamping. Enhanced parts provide superior transient protection in the same package.

Q: Are all substitute parts in the same package? A: Yes. All listed parts use DO-214AB surface mount package (also designated SMC). They are mechanically and electrically interchangeable at the board level.

Q: Does operating temperature range affect substitution? A: SMCJ58A-T7 operates -55 to 150°C. SMCJ58A (MDD) operates -50 to 150°C, which is slightly narrower at the low end. SMCJ58A-TP, 3.0SMCJ58A-13, and SMLJ58A all support -55 to 175°C, providing extended temperature capability. Verify your application's temperature requirements before selection.

Q: Can I use a higher current-rated part (32A) in place of the 16.1A part? A: Yes. Higher current-rated TVS diodes maintain identical voltage clamping characteristics and provide enhanced transient protection capability. They are electrically compatible and mechanically interchangeable. No circuit redesign is required.

Q: What is the REACH status impact? A: SMCJ58A-T7, SMCJ58A, SMCJ58A-TP, and 3.0SMCJ58A-13 are REACH Unaffected. SMLJ58A (Bourns Inc.) is REACH Affected. Verify your application's regulatory requirements before selecting SMLJ58A.

Q: Are all parts RoHS3 compliant? A: Yes. All listed substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original SMCJ58A-T7 specifications.