SMAJ110A Equivalent & Substitute Parts

Part Overview

The SMAJ110A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 110V reverse standoff voltage with a 177V maximum clamping voltage and 2.3A peak pulse current capability in a DO-214AC (SMA) package. The part is Active status and ROHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and operational specifications.

Substiute Parts

SMAJ110A

Bourns Inc.In Stock: 2323SMAJ110A Datasheet

Current PartRFQ

SMAJ110A

MeritekIn Stock: 2384SMAJ110A Datasheet

DirectRFQ

SMAJ110A-TP

Micro Commercial CoIn Stock: 15744SMAJ110A-TP Datasheet

SimilarRFQ

SMAJ120A-13-F

Diodes IncorporatedIn Stock: 4789SMAJ120A-13-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ110A are classified based on the following electrical and mechanical criteria:

Direct Equivalents maintain identical or functionally equivalent specifications across all critical parameters: 110V reverse standoff voltage, 122V minimum breakdown voltage, 177V maximum clamping voltage, 2.3A peak pulse current, 400W peak pulse power, DO-214AC (SMA) package, surface-mount configuration, and -55°C to 150°C operating temperature range.

Similar Substitutes share the same package, mounting type, and power rating but operate at different voltage levels or with minor variations in peak pulse current. These parts are suitable for applications where the voltage rating can be adjusted to accommodate the substitute component's specifications.

The key parameters determining substitutability are: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, package type, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

SMAJ110A (Meritek) serves as a direct equivalent to the Bourns SMAJ110A. Both components maintain identical voltage specifications (110V standoff, 122V breakdown, 177V clamping) and equivalent peak pulse current (2.26A versus 2.3A). Both are ROHS3 compliant with MSL 1 rating. This substitute is suitable for direct replacement in applications requiring the specified 110V protection level.

SMAJ110A-TP (Micro Commercial Co) provides direct electrical equivalence to the Bourns SMAJ110A with identical voltage and current specifications. The extended operating temperature range (-55°C to 175°C) offers enhanced thermal performance compared to the original part. ROHS3 compliance and MSL 1 rating confirm regulatory compatibility. This substitute is appropriate for applications requiring the 110V protection level with potential thermal margin benefits.

SMAJ120A-13-F (Diodes Incorporated) operates at a higher voltage level (120V standoff, 133V breakdown, 193V clamping) with slightly reduced peak pulse current (2A). This part is suitable only for applications where the circuit design can accommodate the elevated voltage specifications. ROHS3 compliance and MSL 1 rating are maintained. Selection of this substitute requires circuit-level voltage compatibility verification.

All substitute parts maintain the DO-214AC (SMA) package format, surface-mount configuration, and 400W peak pulse power rating, ensuring mechanical and thermal compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can SMAJ110A (Meritek) be used as a direct replacement for SMAJ110A (Bourns)?

A: Yes. Both components share identical reverse standoff voltage (110V), breakdown voltage (122V), clamping voltage (177V), and equivalent peak pulse current specifications (2.26A vs 2.3A). Package type, mounting configuration, and compliance ratings are identical.

Q: What is the primary difference between SMAJ110A-TP and the original SMAJ110A?

A: The SMAJ110A-TP maintains identical electrical specifications but extends the operating temperature range to -55°C to 175°C, compared to -55°C to 150°C for the original part. All other parameters, including voltage ratings and peak pulse current, remain equivalent.

Q: Is SMAJ120A-13-F a suitable substitute for SMAJ110A?

A: SMAJ120A-13-F is a similar substitute only for applications where the circuit design accommodates higher voltage specifications. The part operates at 120V standoff (versus 110V) with 193V clamping voltage (versus 177V) and 2A peak pulse current (versus 2.3A). Circuit-level compatibility must be verified before selection.

Q: Are all substitute parts available in the same DO-214AC (SMA) package?

A: Yes. All listed substitute parts use the DO-214AC (SMA) package format with surface-mount configuration, ensuring mechanical and thermal compatibility with the original design footprint.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the regulatory status of the original SMAJ110A.

Q: What determines whether a substitute part is electrically compatible?

A: Electrical compatibility is determined by matching or exceeding the reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current specifications. Parts with identical voltage ratings and equivalent current ratings provide direct substitution capability.