TPSMC16A Equivalent & Substitute Parts

Part Overview

The TPSMC16A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AB (SMC) package. This component provides transient voltage protection with a 13.6V reverse standoff voltage and 22.5V maximum clamping voltage. The part is currently in active production status with AEC-Q101 automotive qualification and ROHS3 compliance. Equivalent and substitute parts are identified to support supply chain continuity, design flexibility, and inventory optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	13.6	V
Voltage - Breakdown (Min)	15.2	V
Voltage - Clamping (Max) @ Ipp	22.5	V
Current - Peak Pulse (10/1000µs)	67.6	A
Power - Peak Pulse	1500	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AB, SMC	-
Mounting Type	Surface Mount	-
Type	Zener	-
Unidirectional Channels	1	-

Substitute Part Grouping Explanation

Substitute parts for the TPSMC16A are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 13.6V
Voltage - Clamping (Max) @ Ipp: 22.5V
Voltage - Breakdown (Min): 15.2V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Type: Zener
Unidirectional Channels: 1

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): ±5% tolerance acceptable (67.6A nominal)
Power - Peak Pulse: 1500W maintained
Operating Temperature Range: May extend beyond -55 to 150°C
RoHS and REACH compliance status

The identified substitutes maintain all critical electrical parameters within specification while offering alternative sourcing options from different manufacturers.

Parameter Comparison

Parameter	TPSMC16A (Littelfuse)	1.5SMC16A (Taiwan Semiconductor)	SMCJ1.5KE16A-TP (Micro Commercial Co)
Voltage - Reverse Standoff (Typ)	13.6V	13.6V	13.6V
Voltage - Breakdown (Min)	15.2V	15.2V	15.2V
Voltage - Clamping (Max) @ Ipp	22.5V	22.5V	22.5V
Current - Peak Pulse (10/1000µs)	67.6A	70A	67.6A
Power - Peak Pulse	1500W	1500W	1500W
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-55 to 175°C
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Type	Zener	Zener	Zener
Unidirectional Channels	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three parts maintain identical critical voltage specifications (13.6V standoff, 15.2V breakdown minimum, 22.5V clamping maximum) and are housed in the same DO-214AB SMC surface mount package. Selection among these parts should be based on:

TPSMC16A (Littelfuse Inc.): Primary choice for automotive applications requiring AEC-Q101 qualification. Active production status with established supply chain.

1.5SMC16A (Taiwan Semiconductor Corporation): Suitable for telecom applications. Offers 70A peak pulse current, providing 4.6% margin above the 67.6A specification. ROHS3 and REACH compliant. Active production status.

SMCJ1.5KE16A-TP (Micro Commercial Co): Suitable for general purpose applications. Maintains 67.6A peak pulse current specification. Extended operating temperature range to 175°C provides thermal margin. ROHS3 and REACH compliant. Active production status.

All substitutes are active products with ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.

Frequently Asked Questions (FAQ)

Q: Can 1.5SMC16A replace TPSMC16A in automotive applications? A: The 1.5SMC16A matches all critical electrical parameters and package specifications. However, it lacks AEC-Q101 automotive qualification. Use only in non-automotive applications or where automotive qualification is not required.

Q: What is the difference between the 70A and 67.6A peak pulse current ratings? A: The 1.5SMC16A provides 70A peak pulse current versus 67.6A for the TPSMC16A and SMCJ1.5KE16A-TP. This 4.6% difference is within acceptable tolerance for TVS diode applications and does not affect voltage clamping performance.

Q: Are all three parts pin-compatible? A: Yes. All three parts use the DO-214AB (SMC) surface mount package with identical pinout and footprint, enabling direct PCB substitution without layout modifications.

Q: Does the extended temperature range of SMCJ1.5KE16A-TP (-55 to 175°C) affect performance? A: The extended range to 175°C provides additional thermal margin but does not change the electrical specifications at the standard operating range. It is suitable for applications with elevated ambient temperatures.

Q: Are all parts RoHS and REACH compliant? A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can these parts be used interchangeably in new designs? A: Electrical and mechanical compatibility is confirmed. Design selection should consider manufacturer qualification requirements (AEC-Q101 for automotive), application category (telecom, general purpose), and supply chain preferences.

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