SMAJ14A-TP Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SMAJ14A-TP is a unidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a 14V reverse standoff voltage and provides 400W peak pulse power dissipation in a DO-214AC (SMA) package. The part is Active status and ROHS3 compliant, making it suitable for modern electronic designs requiring transient suppression.

Substitute parts are necessary when the primary manufacturer's inventory is unavailable, when alternative sourcing reduces lead times, or when design flexibility permits equivalent components from qualified manufacturers that meet identical electrical and mechanical specifications.

Substiute Parts

SMAJ14A-TP

Micro Commercial CoIn Stock: 34237SMAJ14A-TP Datasheet

Current PartRFQ

SMAJ14A

Good-Ark SemiconductorIn Stock: 65384SMAJ14A Datasheet

DirectRFQ

SMAJ14A

Good-Ark SemiconductorIn Stock: 65384SMAJ14A Datasheet

DirectRFQ

SMAJ14A-13-F

Diodes IncorporatedIn Stock: 10140SMAJ14A-13-F Datasheet

DirectRFQ

SMAJ14A-E3/5A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1670SMAJ14A-E3/5A Datasheet

DirectRFQ

SMAJ14A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 43068SMAJ14A-E3/61 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMAJ14A-TP is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Breakdown (Min): 15.6V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 17.2A
• Power - Peak Pulse: 400W
• Type: Zener, Unidirectional
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

All substitute parts listed below meet these electrical and mechanical specifications without deviation. Substitutes are grouped by manufacturer and packaging configuration (Cut Tape vs. Tape & Reel), which may affect procurement and assembly workflows but do not alter functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are Active status components with ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, meeting modern manufacturing and environmental standards.

The primary distinction among substitutes is operating temperature range specification. The SMAJ14A-TP specifies -55°C to 175°C (TA), while all substitute parts specify -55°C to 150°C (TJ). This difference reflects measurement methodology (ambient vs. junction temperature) and may be relevant for applications operating at elevated temperatures near or above 150°C.

Packaging configuration differs between suppliers: Micro Commercial Co and Good-Ark Semiconductor offer Cut Tape and Digi-Reel options suitable for manual assembly or lower-volume production, while Diodes Incorporated and Vishay provide Tape & Reel packaging optimized for automated pick-and-place assembly at higher volumes.

Selection should prioritize availability, lead time requirements, and assembly process compatibility. All parts are electrically and mechanically equivalent for standard general-purpose transient suppression applications.

Frequently Asked Questions (FAQ)

Q: Can SMAJ14A-TP be directly replaced with SMAJ14A from Good-Ark Semiconductor?

A: Yes. Both components share identical electrical specifications (14V standoff, 23.2V clamping, 17.2A peak pulse, 400W power dissipation), unidirectional topology, DO-214AC package, and ROHS3 compliance. The primary difference is packaging format (Cut Tape vs. Digi-Reel availability) and operating temperature specification methodology.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging is supplied on continuous carrier tape optimized for automated assembly equipment. Cut Tape packaging is supplied in smaller quantities on cut segments of the same carrier tape, suitable for manual assembly or lower-volume production runs. Both formats contain identical components in the same DO-214AC package.

Q: Are Vishay TransZorb® parts (SMAJ14A-E3/5A and SMAJ14A-E3/61) functionally equivalent?

A: Yes. Both Vishay parts meet all electrical and mechanical specifications of the SMAJ14A-TP. The suffix designations (-E3/5A and -E3/61) indicate different packaging tape specifications and reel configurations but do not affect component performance or compatibility.

Q: Does the operating temperature range difference affect substitution suitability?

A: The SMAJ14A-TP specifies -55°C to 175°C (TA, ambient temperature), while substitutes specify -55°C to 150°C (TJ, junction temperature). For applications operating below 150°C, all parts are equivalent. Applications requiring operation above 150°C should retain the SMAJ14A-TP or consult thermal analysis to confirm junction temperature remains within substitute part limits.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, for standard pick-and-place assembly. All parts use identical DO-214AC (SMA) package footprints. Tape & Reel variants (Diodes and Vishay) require compatible feeder equipment; Cut Tape variants (Micro Commercial and Good-Ark) may require manual feeding or tape conversion depending on assembly line configuration.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All carry HTSUS code 8541.10.0080. MSL Level 1 (Unlimited) applies to all parts, indicating no moisture sensitivity restrictions during storage or handling.