SMAJ33CA Equivalent & Substitute Parts

Part Overview

The SMAJ33CA is an active Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation. This bidirectional surface-mount device operates in the general-purpose protection category and is designed for transient voltage suppression applications. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1) and maintains active product status. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

SMAJ33CA

Taiwan Semiconductor CorporationIn Stock: 26970SMAJ33CA Datasheet

Current PartRFQ

SMAJ33CA

Good-Ark SemiconductorIn Stock: 26961SMAJ33CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ33CA are identified based on strict electrical and mechanical parameter matching. The substitution criteria are defined by the following key parameters:

• Voltage Rating: Reverse standoff voltage of 33V (Typ), breakdown voltage minimum of 36.7V, and clamping voltage maximum of 53.3V at peak pulse current
• Current Handling: Peak pulse current of 7.5A at 10/1000µs pulse duration
• Power Dissipation: Peak pulse power rating of 400W
• Package Specification: DO-214AC (SMA) surface-mount package
• Device Type: Bidirectional Zener TVS diode with single channel configuration
• Compliance: ROHS3 compliance and MSL 1 rating
• Operating Temperature: Full range of -55°C to 150°C junction temperature

Parts meeting all these parameters are classified as direct substitutes and are electrically and mechanically interchangeable with the SMAJ33CA.

Parameter Comparison

Engineering Selection Recommendations

Both the SMAJ33CA from Taiwan Semiconductor Corporation and the SMAJ33CA from Good-Ark Semiconductor are active products with identical electrical specifications and mechanical packaging. Selection between these parts is based on the following engineering criteria:

Compliance and Certification: Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Both carry MSL 1 (unlimited) moisture sensitivity rating, indicating no special storage or handling requirements.

Product Status: Both parts are active products, ensuring continued availability and support.

Electrical Performance: All critical parameters—voltage ratings, current handling, power dissipation, and operating temperature range—are identical across both manufacturers. This ensures direct functional equivalence in circuit applications.

Packaging and Mounting: Both parts utilize the DO-214AC (SMA) surface-mount package, enabling direct PCB footprint compatibility and automated assembly compatibility.

Supply Chain Considerations: Selection may be based on inventory availability, lead time, pricing, or established supplier relationships, as both parts are functionally and mechanically interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the SMAJ33CA from Good-Ark Semiconductor be used as a direct replacement for the SMAJ33CA from Taiwan Semiconductor Corporation?

A: Yes. Both parts are electrically and mechanically identical. All voltage ratings, current specifications, power dissipation, operating temperature range, package type, and compliance certifications match exactly. Direct substitution is supported without circuit modification.

Q: Are there any differences in the DO-214AC (SMA) package between manufacturers?

A: No. Both parts use the identical DO-214AC (SMA) surface-mount package specification. PCB footprints, land patterns, and automated assembly parameters are compatible.

Q: What are the key electrical parameters that define substitution eligibility for the SMAJ33CA?

A: Substitution eligibility is determined by matching the following parameters: 33V reverse standoff voltage, 36.7V minimum breakdown voltage, 53.3V maximum clamping voltage at peak pulse current, 7.5A peak pulse current (10/1000µs), and 400W peak pulse power rating. All substitute parts must meet these specifications exactly.

Q: Do both manufacturers' versions require different handling or storage procedures?

A: No. Both parts carry MSL 1 (unlimited) moisture sensitivity rating, indicating identical storage and handling requirements. No special precautions beyond standard ESD protection are necessary.

Q: Is the operating temperature range identical for both parts?

A: Yes. Both parts operate across the full temperature range of -55°C to 150°C junction temperature, ensuring identical thermal performance characteristics.

Q: Can these parts be mixed in the same production batch or assembly?

A: Yes. Both parts are functionally and mechanically equivalent. Mixed sourcing from both manufacturers is supported without affecting circuit performance or reliability.

Q: What compliance certifications apply to both versions of the SMAJ33CA?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Both carry HTSUS code 8541.10.0080 for tariff classification purposes.