SMAJ6.0C Equivalent & Substitute Parts

Part Overview

The SMAJ6.0C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 6V reverse standoff voltage, 10.82V maximum clamping voltage, and 38.8A peak pulse current capability in a DO-214AC (SMA) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

SMAJ6.0C

Littelfuse Inc.In Stock: 1110SMAJ6.0C Datasheet

Current PartRFQ

SMAJ6.0CA

Good-Ark SemiconductorIn Stock: 55479SMAJ6.0CA Datasheet

MFR RecommendedRFQ

SMA6J6.0CA-TR

STMicroelectronicsIn Stock: 10427SMA6J6.0CA-TR Datasheet

MFR RecommendedRFQ

SMAJ6.0CA

Good-Ark SemiconductorIn Stock: 55479SMAJ6.0CA Datasheet

MFR RecommendedRFQ

SMAJ6.0CA-13-F

Diodes IncorporatedIn Stock: 68957SMAJ6.0CA-13-F Datasheet

MFR RecommendedRFQ

SMAJ6.0CA-TP

Micro Commercial CoIn Stock: 5672SMAJ6.0CA-TP Datasheet

MFR RecommendedRFQ

SMAJ6.0CAE3/TR13

Microchip TechnologyIn Stock: 4580SMAJ6.0CAE3/TR13 Datasheet

MFR RecommendedRFQ

SMAJ6.0CE3/TR13

Microchip TechnologyIn Stock: 748SMAJ6.0CE3/TR13 Datasheet

MFR RecommendedRFQ

TV04A6V0JB-G

Comchip TechnologyIn Stock: 764TV04A6V0JB-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ6.0C is determined by the following critical parameters:

• Voltage - Reverse Standoff: 6V (all substitutes must match)
• Package / Case: DO-214AC, SMA (mechanical compatibility requirement)
• Mounting Type: Surface Mount (assembly compatibility)
• Voltage - Clamping (Max) @ Ipp: Range 10.3V to 13.7V (acceptable variance for circuit protection)
• Current - Peak Pulse: 38.8A minimum (38.83A to 290A acceptable)
• Power - Peak Pulse: 400W minimum (400W to 600W acceptable)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into two categories based on clamping voltage characteristics:

Group A (Tighter Clamping Tolerance): SMAJ6.0CA, SMAJ6.0CA-13-F, SMAJ6.0CA-TP, SMAJ6.0CAE3/TR13, TV04A6V0JB-G — all with 10.3V clamping voltage, matching the original specification more closely.

Group B (Higher Clamping Voltage): SMA6J6.0CA-TR, SMAJ6.0CE3/TR13 — with 13.7V and 11.4V clamping voltages respectively, suitable for applications tolerating higher transient suppression thresholds.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory adherence. Selection between Group A and Group B substitutes depends on circuit-specific transient suppression requirements:

Group A substitutes (SMAJ6.0CA, SMAJ6.0CA-13-F, SMAJ6.0CA-TP, SMAJ6.0CAE3/TR13, TV04A6V0JB-G) provide clamping voltage of 10.3V, closest to the original SMAJ6.0C specification of 10.82V. These are preferred for direct replacement in existing designs without circuit re-evaluation. SMAJ6.0CAE3/TR13 and SMAJ6.0CA-TP offer extended operating temperature ranges (-65°C and -55°C to 175°C respectively), suitable for extreme environment applications.

Group B substitutes (SMA6J6.0CA-TR, SMAJ6.0CE3/TR13) feature higher clamping voltages (13.7V and 11.4V) and increased peak pulse current or power ratings. SMA6J6.0CA-TR supports 290A peak pulse current and 600W power dissipation, appropriate for high-energy transient environments. SMAJ6.0CE3/TR13 provides 43.9A peak pulse current and 500W power rating with 11.4V clamping.

For applications requiring the lowest operating temperature floor (-65°C), SMAJ6.0CAE3/TR13 and SMAJ6.0CE3/TR13 (both Microchip) maintain the original specification. For standard industrial temperature ranges, all Group A alternatives are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can SMAJ6.0CA directly replace SMAJ6.0C without circuit modification?

A: Yes. SMAJ6.0CA maintains identical reverse standoff voltage (6V), peak pulse current (38.8A), power rating (400W), and package (DO-214AC, SMA). The clamping voltage difference (10.3V vs. 10.82V) is within acceptable tolerance for general-purpose overvoltage protection circuits.

Q: What is the difference between Group A and Group B substitutes?

A: Group A substitutes (10.3V clamping) provide the closest electrical match to the original SMAJ6.0C. Group B substitutes feature higher clamping voltages (11.4V to 13.7V) and increased current/power ratings, suitable for applications requiring higher transient energy absorption or different suppression thresholds.

Q: Are all substitutes available in the same packaging format?

A: Yes. All substitute parts use DO-214AC (SMA) surface-mount packaging, ensuring mechanical and assembly compatibility. Packaging variants (Cut Tape, Tape & Reel) differ only in supply format and do not affect electrical performance or PCB mounting.

Q: Which substitute offers the widest operating temperature range?

A: SMAJ6.0CA-TP (Micro Commercial Co) and SMA6J6.0CA-TR (STMicroelectronics) both support -55°C to 175°C, extending the upper temperature limit by 25°C compared to the original SMAJ6.0C specification.

Q: Is RoHS compliance maintained across all substitutes?

A: Yes. All substitute parts are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: Can SMA6J6.0CA-TR be used in applications requiring the original 38.8A peak pulse specification?

A: Yes. SMA6J6.0CA-TR exceeds the original specification with 290A peak pulse current (8/20µs pulse definition), providing enhanced transient protection. The higher current rating does not create compatibility issues in circuits designed for 38.8A operation.