SMAJ150A-13 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMAJ150A-13 is a unidirectional Zener-type transient voltage suppressor diode manufactured by Diodes Incorporated in a surface mount SMA package (DO-214AC). This component is designed for general-purpose transient voltage suppression applications with a 150V reverse standoff voltage and 243V maximum clamping voltage. The SMAJ150A-13 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit board replacement.

Substiute Parts

SMAJ150A-13

Diodes IncorporatedIn Stock: 932SMAJ150A-13 Datasheet

Current PartRFQ

SMAJ150A-13-F

Diodes IncorporatedIn Stock: 18538SMAJ150A-13-F Datasheet

DirectRFQ

SMAJ150A

MDDIn Stock: 20427SMAJ150A Datasheet

MFR RecommendedRFQ

SMAJ150A

MDDIn Stock: 20427SMAJ150A Datasheet

MFR RecommendedRFQ

SMAJ150A-TP

Micro Commercial CoIn Stock: 4482SMAJ150A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ150A-13 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 150V (Typ)
• Voltage - Breakdown: 167V (Min)
• Voltage - Clamping: 243V (Max @ Ipp)
• Current - Peak Pulse: 1.6A (10/1000µs)
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Unidirectional Channels: 1
• Type: Zener

All identified substitute parts maintain these electrical specifications and the same surface mount SMA package, enabling direct circuit board replacement without design modification. Differences in packaging format (bulk vs. tape & reel), manufacturer identity, compliance status, and operating temperature range do not affect functional equivalence for general-purpose transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain complete electrical and mechanical equivalence to the SMAJ150A-13. Selection among available alternatives should be based on the following factors:

SMAJ150A-13-F (Diodes Incorporated): Direct manufacturer variant with identical specifications. Offers ROHS3 compliance and active product status. Tape & Reel packaging format suitable for automated assembly. Highest inventory availability (18465 units).

SMAJ150A (MDD): Functionally equivalent alternative from secondary manufacturer. ROHS3 compliant with active status. Operating temperature range -50°C to 150°C (TJ) is within the original specification envelope. Tape & Reel packaging. Substantial inventory (20400 units).

SMAJ150A-TP (Micro Commercial Co): Functionally equivalent alternative with extended operating temperature range (-55°C to 175°C TA). ROHS3 compliant and active status. Tape & Reel packaging. Lower inventory availability (4420 units).

For applications requiring RoHS3 compliance or long-term supply assurance, SMAJ150A-13-F is the primary recommendation as the direct manufacturer equivalent. SMAJ150A and SMAJ150A-TP are valid alternatives where secondary sourcing or extended temperature operation is required.

Frequently Asked Questions (FAQ)

Q: Can SMAJ150A-13-F be used as a direct replacement for SMAJ150A-13?

A: Yes. SMAJ150A-13-F is electrically and mechanically identical to SMAJ150A-13. Both are manufactured by Diodes Incorporated with identical voltage ratings (150V standoff, 243V clamping), current ratings (1.6A peak pulse), and SMA package specifications. The primary difference is packaging format (bulk vs. tape & reel) and compliance status (ROHS3 vs. non-compliant).

Q: What is the difference between SMAJ150A-13 and SMAJ150A-13-F?

A: The suffix "-F" indicates tape & reel packaging format suitable for automated assembly, whereas SMAJ150A-13 is supplied in bulk packaging. Electrical specifications are identical. SMAJ150A-13-F carries ROHS3 compliance certification.

Q: Are MDD and Micro Commercial Co alternatives electrically equivalent?

A: Yes. SMAJ150A (MDD) and SMAJ150A-TP (Micro Commercial Co) maintain all critical electrical parameters: 150V reverse standoff, 167V breakdown minimum, 243V clamping maximum, and 1.6A peak pulse current. Both are housed in DO-214AC (SMA) packages and are suitable for direct substitution.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range differences do not affect functional equivalence for general-purpose transient voltage suppression. SMAJ150A (MDD) operates -50°C to 150°C, while SMAJ150A-TP (Micro Commercial Co) operates -55°C to 175°C. Both encompass or exceed the original SMAJ150A-13 specification (-55°C to 150°C). Selection should be based on application temperature requirements.

Q: Is RoHS3 compliance required for substitution?

A: RoHS3 compliance is not a functional requirement for electrical equivalence. However, for new designs or applications subject to RoHS3 regulations, SMAJ150A-13-F, SMAJ150A (MDD), and SMAJ150A-TP all meet ROHS3 compliance requirements.

Q: Can these parts be used interchangeably on the same circuit board?

A: Yes. All substitute parts share identical DO-214AC (SMA) package dimensions and pinout. They are mechanically and electrically interchangeable without PCB layout modification.

Q: Why is SMAJ150A-13 discontinued?

A: Product discontinuation at DiGi Electronics does not indicate functional obsolescence. Equivalent alternatives from the same and alternative manufacturers remain in active production with identical specifications.