SMDJ110CA-T7 Equivalent & Substitute Parts

Part Overview

The SMDJ110CA-T7 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection in surface-mount applications. This component operates with a reverse standoff voltage of 110V and provides clamping at 177V maximum, with peak pulse current handling of 16.9A and 3000W peak pulse power dissipation. The part is active in production status and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-214AB (SMC) package family.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	110V
Voltage - Breakdown (Min)	122V
Voltage - Clamping (Max) @ Ipp	177V
Current - Peak Pulse (10/1000µs)	16.9A
Power - Peak Pulse	3000W
Package / Case	DO-214AB, SMC
Operating Temperature Range	-65°C ~ 150°C
Type	Zener
Bidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the SMDJ110CA-T7 are qualified based on the following criteria:

Electrical Parameter Matching:

Voltage - Reverse Standoff (Typ): 110V
Voltage - Breakdown (Min): 122V
Voltage - Clamping (Max) @ Ipp: 177V
Type: Zener, Bidirectional (1 channel)
Applications: General Purpose

Mechanical Compatibility:

Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount

Operational Compatibility:

Current - Peak Pulse (10/1000µs): 8.4A to 16.9A range
Power - Peak Pulse: 1500W to 3000W range
Operating Temperature: -55°C to -65°C minimum; 150°C maximum

Substitute parts meeting these criteria are functionally interchangeable within the specified electrical and thermal operating envelope.

Parameter Comparison

Parameter	SMDJ110CA-T7 (Littelfuse)	SMCJ110CA (Fairchild)	SMCJ110CA-E3/57T (Vishay)	SMLJ110CA (Bourns)
Manufacturer	Littelfuse	Fairchild Semiconductor	Vishay General Semiconductor	Bourns Inc.
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)	16.9A	8.4A	8.5A	16.8A
Power - Peak Pulse	3000W	1500W	1500W	3000W
Operating Temperature Range	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Type	Zener	Zener	Zener	Zener
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active production status and are suitable for general-purpose transient voltage suppression applications. Selection between substitutes should account for the following factors:

Current and Power Handling: SMCJ110CA (Fairchild) and SMCJ110CA-E3/57T (Vishay) are rated for 8.4A to 8.5A peak pulse current and 1500W peak pulse power. These are suitable for applications where peak pulse current does not exceed 8.5A. SMDJ110CA-T7 (Littelfuse) and SMLJ110CA (Bourns) are rated for 16.8A to 16.9A peak pulse current and 3000W peak pulse power, providing higher transient energy absorption capability.

Temperature Operating Range: SMDJ110CA-T7 (Littelfuse) operates from -65°C to 150°C. SMCJ110CA (Fairchild), SMCJ110CA-E3/57T (Vishay), and SMLJ110CA (Bourns) operate from -55°C to 150°C. Applications requiring operation below -55°C require the Littelfuse part.

Compliance and Certifications: SMDJ110CA-T7, SMCJ110CA-E3/57T, and SMLJ110CA are RoHS3 compliant. All parts are REACH unaffected or affected as specified and carry EAR99 export classification.

Packaging and Availability: SMDJ110CA-T7 is supplied in Tape & Reel (TR) packaging. SMCJ110CA-E3/57T is supplied in Cut Tape (CT) packaging. SMLJ110CA is supplied in Tape & Reel (TR) packaging. Packaging selection depends on assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can SMCJ110CA (Fairchild) be used as a direct replacement for SMDJ110CA-T7?

A: SMCJ110CA matches all voltage parameters (110V standoff, 122V breakdown, 177V clamping) and package specifications (DO-214AB, SMC). However, it is rated for 8.4A peak pulse current versus 16.9A for the SMDJ110CA-T7. Substitution is valid only if the application's transient current does not exceed 8.4A and the operating temperature range of -55°C to 150°C is acceptable.

Q: What is the difference between SMLJ110CA and SMDJ110CA-T7?

A: Both parts share identical voltage ratings (110V standoff, 122V breakdown, 177V clamping) and current/power handling (16.8A to 16.9A, 3000W). The primary difference is the operating temperature range: SMDJ110CA-T7 operates from -65°C to 150°C, while SMLJ110CA operates from -55°C to 150°C. SMLJ110CA is manufactured by Bourns Inc. and SMDJ110CA-T7 by Littelfuse.

Q: Are all substitute parts in the same DO-214AB package?

A: Yes. All listed substitute parts use the DO-214AB (SMC) surface-mount package, ensuring mechanical and footprint compatibility on PCB assemblies.

Q: Which substitute part has the lowest temperature operating limit?

A: SMDJ110CA-T7 (Littelfuse) has the lowest minimum operating temperature at -65°C. All other substitutes operate from -55°C minimum.

Q: Can SMCJ110CA-E3/57T replace SMDJ110CA-T7 in high-current transient applications?

A: No. SMCJ110CA-E3/57T is rated for 8.5A peak pulse current and 1500W peak pulse power, compared to 16.9A and 3000W for SMDJ110CA-T7. Applications requiring absorption of transients exceeding 8.5A peak current require the higher-rated Littelfuse or Bourns parts.

Q: What packaging formats are available for these substitute parts?

A: SMDJ110CA-T7 and SMLJ110CA are supplied in Tape & Reel (TR) format. SMCJ110CA-E3/57T is supplied in Cut Tape (CT) format. SMCJ110CA (Fairchild) packaging format is not specified in available data.

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