SMAJ64A-TP Equivalent & Substitute Parts

Part Overview

The SMAJ64A-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in surface-mount applications. This component operates with a 64V reverse standoff voltage and provides 103V maximum clamping voltage at peak pulse current. The part is actively produced and widely stocked, with 5716 units available in original inventory. Substitute parts are identified to support procurement flexibility, extended lead times, or inventory optimization while maintaining electrical and mechanical compatibility.

Substiute Parts

SMAJ64A-TP

Micro Commercial CoIn Stock: 5779SMAJ64A-TP Datasheet

Current PartRFQ

SMAJ64A

MeritekIn Stock: 122511SMAJ64A Datasheet

DirectRFQ

SMAJ64A

MeritekIn Stock: 122511SMAJ64A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ64A-TP are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Voltage - Reverse Standoff: 64V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 103V (exact match required)
• Current - Peak Pulse (10/1000µs): ≥3.88A (within tolerance)
• Package / Case: DO-214AC (SMA) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• RoHS Status: ROHS3 Compliant (compliance maintained)

The identified substitute part maintains all critical electrical parameters within acceptable engineering tolerances and preserves the same physical package footprint and mounting methodology. Compliance certifications remain consistent across all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

The SMAJ64A manufactured by Meritek qualifies as a direct substitute for the SMAJ64A-TP. Both parts maintain identical electrical specifications for reverse standoff voltage, breakdown voltage, and clamping voltage. Peak pulse current differs by 0.02A (3.9A vs. 3.88A), which remains within acceptable engineering tolerance for general-purpose TVS applications. Both parts are ROHS3 compliant, carry MSL 1 rating, and are classified as REACH Unaffected with identical ECCN and HTSUS codes.

The primary operational difference is the maximum operating temperature range: the Meritek substitute operates to 150°C versus 175°C for the original part. Component selection should account for the specific thermal environment of the application. In applications where sustained operation above 150°C is required, the original SMAJ64A-TP from Micro Commercial Co is the appropriate choice. For applications with maximum operating temperatures at or below 150°C, the Meritek SMAJ64A provides equivalent protection with identical electrical performance and compliance status.

Frequently Asked Questions (FAQ)

Q: Can the Meritek SMAJ64A be used as a direct replacement for the Micro Commercial Co SMAJ64A-TP?

A: Yes, the Meritek SMAJ64A is electrically and mechanically compatible. Both parts share identical reverse standoff voltage (64V), breakdown voltage (71.1V), clamping voltage (103V), power rating (400W), and package footprint (DO-214AC/SMA). Peak pulse current specifications differ by 0.02A, which is within acceptable tolerance. The primary consideration is operating temperature: the Meritek part is rated to 150°C maximum, while the original is rated to 175°C.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: (1) Voltage - Reverse Standoff matching at 64V, (2) Voltage - Clamping (Max) @ Ipp matching at 103V, (3) Peak Pulse Current of 3.88A or higher, (4) identical DO-214AC (SMA) package, (5) Surface Mount mounting type, and (6) maintained RoHS3 compliance and MSL 1 rating.

Q: Are there any compliance or certification differences between the parts?

A: No. Both the original SMAJ64A-TP and the Meritek SMAJ64A are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, are REACH Unaffected, and share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What is the impact of the 25°C difference in maximum operating temperature?

A: The Meritek SMAJ64A operates to a maximum of 150°C, while the original operates to 175°C. For applications where the component will experience sustained temperatures above 150°C, the original SMAJ64A-TP is required. For applications with maximum operating temperatures at or below 150°C, both parts are functionally equivalent.

Q: Are the parts pin-compatible and footprint-compatible?

A: Yes. Both parts use the DO-214AC (SMA) package with identical pin configuration and PCB footprint. No layout modifications are required for substitution.