SMAJ160A-13 Equivalent & Substitute Parts

Part Overview

The SMAJ160A-13 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 160V reverse standoff voltage with a 259V maximum clamping voltage and 1.5A peak pulse current capability in a DO-214AC (SMA) package.

The SMAJ160A-13 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 160V TVS protection.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	160	V
Voltage - Breakdown (Min)	178	V
Voltage - Clamping (Max) @ Ipp	259	V
Current - Peak Pulse (10/1000µs)	1.5	A
Power - Peak Pulse	400	W
Package / Case	DO-214AC, SMA	—
Operating Temperature Range	-55 to 150	°C
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the SMAJ160A-13 TVS diode are qualified based on the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 160V
Voltage - Breakdown (Min): 178V
Voltage - Clamping (Max) @ Ipp: 259V
Current - Peak Pulse (10/1000µs): 1.5A minimum
Power - Peak Pulse: 400W
Package / Case: DO-214AC, SMA
Type: Zener, Unidirectional
Unidirectional Channels: 1

Substitute parts must maintain these electrical specifications within the defined tolerances and use the same surface-mount package configuration. Variations in peak pulse current above 1.5A and extended operating temperature ranges are acceptable as they represent equal or superior performance characteristics.

Parameter Comparison

Parameter	SMAJ160A-13 (Diodes Inc.)	SMAJ160A (HY Electronic)	SMAJ160A-TP (Micro Commercial Co)
Manufacturer	Diodes Incorporated	HY Electronic (Cayman) Limited	Micro Commercial Co
Product Status	Discontinued at DiGi Electronics	Active	Active
Voltage - Reverse Standoff (Typ)	160V	160V	160V
Voltage - Breakdown (Min)	178V	178V	178V
Voltage - Clamping (Max) @ Ipp	259V	259V	259V
Current - Peak Pulse (10/1000µs)	1.5A	1.6A	1.5A
Power - Peak Pulse	400W	400W	400W
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature Range	-55 to 150°C (TJ)	-55 to 150°C (TJ)	-55 to 175°C (TA)
Type	Zener	Zener	Zener
Unidirectional Channels	1	1	1
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both substitute parts maintain electrical equivalence to the SMAJ160A-13 across all critical TVS protection parameters. Selection between available substitutes should be based on the following factors:

SMAJ160A (HY Electronic): This part is currently active with 16,841 units in stock. It provides a 1.6A peak pulse current rating, which exceeds the original 1.5A specification, offering enhanced transient protection margin. However, RoHS compliance status is listed as ROHS3 Compliant, while REACH status is Vendor Undefined.

SMAJ160A-TP (Micro Commercial Co): This part is the manufacturer-recommended substitute, currently active with 5,848 units in stock. It maintains the original 1.5A peak pulse current specification and extends the operating temperature range to -55 to 175°C (TA). This part carries ROHS3 Compliance and REACH Unaffected certifications, providing full regulatory documentation.

For applications requiring RoHS3 compliance and complete regulatory traceability, SMAJ160A-TP is the preferred selection. For applications where higher transient current handling is beneficial, SMAJ160A (HY Electronic) provides additional margin.

Frequently Asked Questions (FAQ)

Q: Can SMAJ160A-13 be directly replaced with SMAJ160A-TP?

A: Yes. Both parts share identical electrical specifications for reverse standoff voltage (160V), breakdown voltage (178V), clamping voltage (259V), and peak pulse current (1.5A). Both use the DO-214AC (SMA) surface-mount package. The SMAJ160A-TP offers an extended operating temperature range (-55 to 175°C) and carries ROHS3 compliance certification.

Q: What is the difference between SMAJ160A (HY Electronic) and SMAJ160A-TP?

A: The primary differences are manufacturer, peak pulse current rating (1.6A vs. 1.5A), and regulatory certifications. The HY Electronic version provides higher transient current capability. The Micro Commercial Co version (SMAJ160A-TP) is the manufacturer-recommended substitute with extended temperature range and complete RoHS/REACH documentation.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the DO-214AC (SMA) package with identical pinout and footprint, enabling direct PCB-level substitution without layout modifications.

Q: Does the higher peak pulse current of SMAJ160A (1.6A) affect circuit compatibility?

A: No. Higher peak pulse current rating indicates superior transient protection capability. The part will function identically in the circuit while providing additional safety margin for overvoltage events.

Q: What is the significance of the operating temperature range difference?

A: SMAJ160A-TP extends the upper operating temperature limit to 175°C (TA) compared to 150°C (TJ) for the original part. This provides additional thermal margin for applications operating in elevated ambient conditions.

Q: Are there any packaging differences between these parts?

A: All three parts are supplied in DO-214AC (SMA) surface-mount packages. SMAJ160A-TP is available in Tape & Reel (TR) packaging, which is standard for automated assembly processes.

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