SMCJ170A-13 Equivalent & Substitute Parts

Part Overview

The SMCJ170A-13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 170V reverse standoff voltage, 275V maximum clamping voltage, and 5.5A peak pulse current capability in a DO-214AB (SMC) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Substiute Parts

SMCJ170A-13

Diodes IncorporatedIn Stock: 6496SMCJ170A-13 Datasheet

Current PartRFQ

SMCJ170A-13-F

Diodes IncorporatedIn Stock: 5430SMCJ170A-13-F Datasheet

DirectRFQ

SMCJ170A-TP

Micro Commercial CoIn Stock: 3779SMCJ170A-TP Datasheet

DirectRFQ

5.0SMDJ170A

MDE Semiconductor IncIn Stock: 303765.0SMDJ170A Datasheet

MFR RecommendedRFQ

5.0SMDJ170A-T7

LittelfuseIn Stock: 12185.0SMDJ170A-T7 Datasheet

MFR RecommendedRFQ

SMCJ170A

Fairchild SemiconductorIn Stock: 90415SMCJ170A Datasheet

MFR RecommendedRFQ

SMCJ170A

Fairchild SemiconductorIn Stock: 90415SMCJ170A Datasheet

MFR RecommendedRFQ

SMCJ170A

Fairchild SemiconductorIn Stock: 90415SMCJ170A Datasheet

MFR RecommendedRFQ

SMCJ170A-TR

STMicroelectronicsIn Stock: 12670SMCJ170A-TR Datasheet

MFR RecommendedRFQ

SMDJ170A

Alpha & Omega Semiconductor Inc.In Stock: 10142SMDJ170A Datasheet

MFR RecommendedRFQ

SMLJ170A

Bourns Inc.In Stock: 30359SMLJ170A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ170A-13 is determined by strict equivalence in the following electrical parameters: reverse standoff voltage (170V), breakdown voltage (189V minimum), clamping voltage (275V maximum), and unidirectional channel configuration (1 channel). The DO-214AB (SMC) surface-mount package is mandatory for mechanical compatibility. Substitute parts are grouped into two categories based on peak pulse current and power dissipation capacity:

Category A - Standard Current Rating (5.5A, 1500W): Parts maintaining identical electrical specifications and power ratings as the original SMCJ170A-13.

Category B - Enhanced Current Rating (11A or higher, 3000W or higher): Parts with identical voltage parameters but higher current and power ratings, suitable for applications requiring increased transient energy absorption.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

SMCJ170A-13-F from Diodes Incorporated is the direct successor to the discontinued SMCJ170A-13, maintaining all electrical and thermal parameters while achieving ROHS3 compliance. This part is recommended as the primary replacement for new designs and inventory replenishment.

SMCJ170A-TP from Micro Commercial Co provides identical electrical performance with an extended operating temperature range to 175°C, offering thermal margin for applications in elevated ambient conditions.

SMCJ170A from Fairchild Semiconductor maintains full electrical equivalence and is available in high inventory volume.

Enhanced Performance Alternatives:

SMDJ170A from Alpha & Omega Semiconductor Inc. and SMLJ170A from Bourns Inc. provide doubled peak pulse current (11A) and power dissipation (3000W) while maintaining identical voltage specifications. These parts are suitable for applications requiring increased transient energy absorption without circuit redesign.

5.0SMDJ170A from MDE Semiconductor Inc. and 5.0SMDJ170A-T7 from Littelfuse offer the highest current rating (18.2A) and power dissipation (5000W) in the 170V class, with the Littelfuse variant providing extended low-temperature operation to -65°C.

Conditional Substitution:

SMCJ170A-TR from STMicroelectronics exhibits a higher clamping voltage (353V) compared to the 275V specification of SMCJ170A-13. This part is suitable only for applications where the higher clamping voltage does not compromise circuit protection requirements.

All recommended substitutes maintain the DO-214AB (SMC) surface-mount package, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can SMCJ170A-13-F be used as a direct drop-in replacement for SMCJ170A-13?

A: Yes. SMCJ170A-13-F maintains identical electrical specifications (170V standoff, 189V breakdown, 275V clamping, 5.5A peak pulse) and the same DO-214AB package. The primary difference is ROHS3 compliance and active product status.

Q: What is the difference between SMCJ170A-13 and SMDJ170A?

A: Both maintain identical voltage parameters (170V standoff, 275V clamping). SMDJ170A provides doubled peak pulse current (11A versus 5.5A) and power dissipation (3000W versus 1500W), making it suitable for higher transient energy applications.

Q: Is SMCJ170A-TR a suitable replacement?

A: SMCJ170A-TR maintains the 170V standoff and 189V breakdown voltages but exhibits a higher clamping voltage of 353V compared to the original 275V specification. Substitution is permissible only if the circuit design tolerates the higher clamping voltage without performance degradation.

Q: Can I use 5.0SMDJ170A-T7 in place of SMCJ170A-13?

A: Yes. 5.0SMDJ170A-T7 maintains identical voltage specifications and the DO-214AB package. The higher current rating (18.2A) and power dissipation (5000W) provide enhanced protection margin. The extended temperature range (-65°C to 150°C) offers additional thermal capability.

Q: Are all substitute parts available in the same packaging options?

A: All listed substitutes are available in DO-214AB (SMC) surface-mount package. Packaging variants (bulk, tape & reel) differ by manufacturer and supplier. Verify packaging availability with your component distributor.

Q: What compliance certifications apply to these substitutes?

A: All active substitute parts listed achieve ROHS3 compliance. REACH status varies by manufacturer; verify specific REACH compliance requirements with your supplier for applications subject to REACH regulations.