SMLJ120CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ120CA-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose interface protection applications. This surface-mount component operates in the 120V reverse standoff voltage class and delivers peak pulse power handling of 3000W. The part is currently in active production status with 950 units available in inventory.

Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

SMLJ120CA-TP

Micro Commercial CoIn Stock: 1057SMLJ120CA-TP Datasheet

Current PartRFQ

SMDJ120CA

Alpha & Omega Semiconductor Inc.In Stock: 1925SMDJ120CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMLJ120CA-TP is determined by strict equivalence across the following critical parameters:

• Voltage Class: Reverse standoff voltage of 120V (nominal)
• Breakdown Voltage: Minimum 133V
• Clamping Voltage: Maximum 193V at peak pulse current
• Peak Pulse Current: 15.6A (10/1000µs waveform)
• Peak Pulse Power: 3000W
• Package Type: DO-214AB / SMC surface-mount form factor
• Zener Type: Single-channel unidirectional configuration
• Application Class: General-purpose interface protection

The SMDJ120CA from Alpha & Omega Semiconductor Inc. meets all electrical parameter requirements and shares identical package specifications, qualifying it as a direct substitute within the 120V TVS diode category.

Parameter Comparison

Engineering Selection Recommendations

SMLJ120CA-TP (Primary Part)

• Active production status with established supply
• Operating temperature range: -55°C to 175°C
• REACH Unaffected compliance status
• EAR99 export classification
• 950 units currently in inventory

SMDJ120CA (Substitute Part)

• Active production status with higher inventory availability (1900 units)
• Operating temperature range: -55°C to 150°C
• RoHS3 Compliant certification
• REACH Unaffected compliance status
• EAR99 export classification
• Identical electrical performance and package specifications

Selection Criteria: The SMDJ120CA is electrically and mechanically interchangeable with the SMLJ120CA-TP for applications operating within the -55°C to 150°C temperature window. For applications requiring operation above 150°C junction temperature, the SMLJ120CA-TP remains the required choice due to its extended upper temperature rating of 175°C.

Frequently Asked Questions (FAQ)

Q: Can SMDJ120CA replace SMLJ120CA-TP in all applications?

A: The SMDJ120CA is electrically and mechanically equivalent for applications with maximum junction temperatures not exceeding 150°C. Applications requiring operation between 150°C and 175°C require the SMLJ120CA-TP.

Q: Are the package dimensions identical between these parts?

A: Both parts use the DO-214AB / SMC surface-mount package. PCB footprints and reflow profiles are compatible.

Q: What is the difference between the SMLJ and SMDJ series designations?

A: The SMLJ series is manufactured by Micro Commercial Co, while the SMDJ series is manufactured by Alpha & Omega Semiconductor Inc. Both series share identical electrical specifications within the 120V class.

Q: Do both parts meet RoHS compliance requirements?

A: The SMDJ120CA carries explicit RoHS3 Compliant certification. The SMLJ120CA-TP is REACH Unaffected. Verify specific compliance requirements for your application and region.

Q: What is the significance of the 10/1000µs pulse waveform specification?

A: This specification defines the peak pulse current rating under a standard transient surge waveform. Both parts are rated for 15.6A peak pulse current under this standard test condition, ensuring equivalent transient protection performance.

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

A: Yes. Both parts share identical DO-214AB / SMC package specifications, allowing direct substitution in surface-mount assembly processes without footprint or reflow profile modifications.