SMAJ160 Equivalent & Substitute Parts

Part Overview

The SMAJ160 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 160V reverse standoff voltage with a 271.95V maximum clamping voltage and 1.5A peak pulse current capability in a DO-214AC (SMA) package.

The SMAJ160 is classified as obsolete. Equivalent and substitute parts listed below provide active alternatives with comparable or enhanced electrical characteristics, maintaining the same reverse standoff voltage and package form factor while offering improved availability and extended product lifecycle support.

Substiute Parts

SMAJ160

Littelfuse Inc.In Stock: 1101SMAJ160 Datasheet

Current PartRFQ

SMAJ160A

HY Electronic (Cayman) LimitedIn Stock: 16899SMAJ160A Datasheet

MFR RecommendedRFQ

SMAJ160A

HY Electronic (Cayman) LimitedIn Stock: 16899SMAJ160A Datasheet

MFR RecommendedRFQ

SMAJ160A-13-F

Diodes IncorporatedIn Stock: 33032SMAJ160A-13-F Datasheet

MFR RecommendedRFQ

SMAJ160A-TP

Micro Commercial CoIn Stock: 5917SMAJ160A-TP Datasheet

MFR RecommendedRFQ

SMAJ160AE3/TR13

Microchip TechnologyIn Stock: 936SMAJ160AE3/TR13 Datasheet

MFR RecommendedRFQ

SMAJ160E3/TR13

Microchip TechnologyIn Stock: 1006SMAJ160E3/TR13 Datasheet

MFR RecommendedRFQ

TV04A161J-G

Comchip TechnologyIn Stock: 854TV04A161J-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ160 is determined by the following critical parameters:

• Reverse Standoff Voltage: Must equal 160V (all substitutes maintain this specification)
• Package / Case: Must be DO-214AC (SMA) surface-mount form factor
• Unidirectional Configuration: Single-channel zener diode topology
• Voltage - Clamping (Max) @ Ipp: Acceptable range 259V to 287V (lower than original 271.95V, representing improved clamping performance)
• Current - Peak Pulse (10/1000µs): Acceptable range 1.5A to 1.9A (equal or higher than original 1.5A)
• Power - Peak Pulse: Acceptable range 400W to 500W (equal or higher than original 400W)
• RoHS Compliance: ROHS3 Compliant (mandatory for modern applications)
• Moisture Sensitivity Level: MSL 1 (Unlimited) for all parts

All substitute parts meet or exceed the electrical performance envelope of the SMAJ160 while maintaining identical package compatibility and reverse standoff voltage specification.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are ROHS3 compliant and carry REACH Unaffected or REACH Unaffected status, meeting modern regulatory requirements for electronic component procurement.

SMAJ160A (HY Electronic) and SMAJ160A-13-F (Diodes Incorporated) provide direct electrical equivalence with 259V clamping voltage and 1.5A peak pulse current, maintaining identical power dissipation (400W) to the original SMAJ160. Both are active products with established supply chains.

SMAJ160A-TP (Micro Commercial Co) offers the widest operating temperature range (-55 to 175°C ambient), suitable for applications requiring extended thermal performance beyond the original specification.

SMAJ160AE3/TR13 (Microchip Technology) delivers enhanced current handling (1.9A) and power dissipation (500W) while maintaining the original -65 to 150°C junction temperature range, providing margin for high-stress transient protection scenarios.

SMAJ160E3/TR13 (Microchip Technology) features the highest clamping voltage (287V) with 1.7A peak pulse current and 500W power rating, suitable for applications where higher clamping voltage is acceptable or beneficial.

TV04A161J-G (Comchip Technology) provides 259V clamping with 1.54A peak pulse current, representing a mid-range alternative with active product status and established availability.

Frequently Asked Questions (FAQ)

Q: Can SMAJ160 substitutes be used interchangeably in existing designs?

A: Yes, all listed substitutes maintain the 160V reverse standoff voltage and DO-214AC (SMA) package compatibility. Designs using the SMAJ160 can accept any substitute part without PCB modification. Verify that the application can tolerate the clamping voltage range (259V to 287V) compared to the original 271.95V specification.

Q: What is the difference between clamping voltage specifications across substitutes?

A: Clamping voltage represents the maximum voltage across the TVS diode during transient suppression at peak pulse current. Lower clamping voltages (259V) provide tighter voltage regulation compared to the original (271.95V) and the highest option (287V). Selection depends on downstream component voltage ratings and transient margin requirements.

Q: Are all substitutes available in tape and reel packaging?

A: Yes, all substitute parts are available in Tape & Reel (TR) packaging suitable for automated assembly. Verify specific packaging requirements with your supplier, as some parts may be offered in multiple packaging options.

Q: Which substitute offers the best thermal performance?

A: SMAJ160A-TP (Micro Commercial Co) specifies the highest ambient operating temperature at 175°C (TA), compared to 150°C (TJ) for most alternatives. SMAJ160AE3/TR13 and SMAJ160E3/TR13 (Microchip Technology) maintain the original -65°C lower temperature limit, providing symmetrical thermal range.

Q: Do all substitutes meet RoHS compliance requirements?

A: Yes, all substitute parts are ROHS3 compliant. Moisture sensitivity level is MSL 1 (Unlimited) for all parts, indicating no special storage or handling requirements.

Q: What is the peak pulse current difference between substitutes?

A: Peak pulse current ranges from 1.5A to 1.9A across substitutes. Higher current ratings (1.6A, 1.54A, 1.7A, 1.9A) provide additional transient suppression capacity compared to the original 1.5A specification, with SMAJ160AE3/TR13 offering the maximum at 1.9A.