SMAJ110A-13 Equivalent & Substitute Parts

Part Overview

The SMAJ110A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode in DO-214AC (SMA) surface mount package, rated for 110V reverse standoff voltage with 177V maximum clamping voltage. Manufactured by Diodes Incorporated, this component is designed for general-purpose transient voltage suppression applications. The SMAJ110A-13 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain the same electrical and mechanical specifications for continued system support and new designs.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	110V
Voltage - Breakdown (Min)	122V
Voltage - Clamping (Max) @ Ipp	177V
Current - Peak Pulse (10/1000µs)	2.3A
Power - Peak Pulse	400W
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the SMAJ110A-13 are qualified based on strict electrical and mechanical parameter matching:

Critical Parameters for Substitution:

Voltage - Reverse Standoff: 110V (exact match required)
Voltage - Clamping (Max) @ Ipp: 177V (exact match required)
Current - Peak Pulse (10/1000µs): 2.3A nominal (±0.04A tolerance acceptable)
Package / Case: DO-214AC, SMA (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Zener, Unidirectional (exact match required)

All identified substitutes maintain these core electrical specifications and physical form factor, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Parameter	SMAJ110A-13 (Original)	SMAJ110A-13-F	SMAJ110A (Meritek)	SMAJ110A-TP
Manufacturer	Diodes Incorporated	Diodes Incorporated	Meritek	Micro Commercial Co
Voltage - Reverse Standoff (Typ)	110V	110V	110V	110V
Voltage - Breakdown (Min)	122V	122V	122V	122V
Voltage - Clamping (Max) @ Ipp	177V	177V	177V	177V
Current - Peak Pulse (10/1000µs)	2.3A	2.3A	2.26A	2.3A
Power - Peak Pulse	400W	400W	400W	400W
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC (SMA)	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C	-55°C ~ 175°C (TA)
Product Status	Discontinued	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: SMAJ110A-13-F (Diodes Incorporated)

SMAJ110A-13-F is the manufacturer-recommended direct substitute, produced by the original manufacturer Diodes Incorporated. It maintains identical electrical specifications and packaging. The part is in active production status with 35,400 units in stock. ROHS3 compliance provides regulatory advantage over the discontinued original part. Packaging format is Tape & Reel (TR), suitable for automated assembly processes.

Secondary Substitute: SMAJ110A-TP (Micro Commercial Co)

SMAJ110A-TP provides equivalent electrical performance with 2.3A peak pulse current matching the original specification. This part offers extended operating temperature range to 175°C (TA), providing thermal margin in high-temperature applications. ROHS3 compliance and active production status ensure long-term availability. Inventory of 15,718 units supports production requirements.

Tertiary Substitute: SMAJ110A (Meritek)

SMAJ110A from Meritek maintains all critical voltage specifications with peak pulse current of 2.26A, within acceptable tolerance of the 2.3A original specification. ROHS3 compliance and active product status ensure regulatory compliance and supply continuity. Inventory of 2,300 units supports moderate-volume applications.

Frequently Asked Questions (FAQ)

Q: Can SMAJ110A-13-F be used as a direct replacement for SMAJ110A-13?

A: Yes. SMAJ110A-13-F is the manufacturer-recommended substitute from Diodes Incorporated with identical electrical specifications (110V standoff, 177V clamping, 2.3A peak pulse) and DO-214AC (SMA) packaging. The primary difference is packaging format (Tape & Reel vs. bulk) and active production status.

Q: What is the difference between SMAJ110A-13-F and SMAJ110A-TP?

A: Both parts meet the core electrical requirements (110V standoff, 177V clamping, 2.3A peak pulse, 400W power rating) and use DO-214AC (SMA) packaging. SMAJ110A-TP offers extended operating temperature range to 175°C (TA) compared to 150°C (TJ) for SMAJ110A-13-F. Manufacturer differs: Diodes Incorporated vs. Micro Commercial Co.

Q: Is SMAJ110A from Meritek acceptable as a substitute?

A: Yes, with engineering review. SMAJ110A maintains all critical voltage specifications and 400W power rating. Peak pulse current is 2.26A versus 2.3A specification, representing a 1.7% variance within acceptable tolerance for general-purpose TVS applications. Confirm application current requirements before selection.

Q: Does packaging format (Tape & Reel vs. bulk) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical specifications and component performance remain identical regardless of packaging configuration.

Q: Are all substitute parts RoHS compliant?

A: Yes. SMAJ110A-13-F, SMAJ110A-TP, and SMAJ110A are all ROHS3 compliant. The original SMAJ110A-13 is RoHS non-compliant, making substitution advantageous for regulatory compliance in new designs and legacy system updates.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use identical DO-214AC (SMA) surface mount package with matching pin configuration and footprint. No PCB layout modifications are required for substitution.

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