SMLJ22CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ22CA-TP is a bidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose interface protection applications. This surface-mount component operates with a 22V reverse standoff voltage and provides 3000W peak pulse power dissipation in a compact DO-214AB (SMC) package. The part is currently in active production status with 966 units available in bulk packaging. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SMLJ22CA-TP

Micro Commercial CoIn Stock: 1006SMLJ22CA-TP Datasheet

Current PartRFQ

SMDJ22CA

Alpha & Omega Semiconductor Inc.In Stock: 3166SMDJ22CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMLJ22CA-TP is determined by strict alignment of the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 22V
• Voltage - Breakdown (Min): 24.4V
• Voltage - Clamping (Max) @ Ipp: 35.5V
• Current - Peak Pulse (10/1000µs): ≥84.4A
• Power - Peak Pulse: 3000W (3kW)
• Bidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

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

The SMDJ22CA manufactured by Alpha & Omega Semiconductor Inc. meets all specified electrical parameters and mechanical requirements. Peak pulse current specification (84.6A) exceeds the minimum threshold. Both components share identical voltage ratings, clamping characteristics, and power dissipation capacity. Package and mounting type are identical, enabling direct physical and electrical substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the SMLJ22CA-TP and SMDJ22CA are active production components suitable for general-purpose transient voltage suppression applications. Selection between these parts is based on the following factors:

SMLJ22CA-TP (Micro Commercial Co):

• Supplied in bulk packaging
• Current inventory: 966 units
• Operating temperature range: -55°C to 175°C
• REACH Unaffected status

SMDJ22CA (Alpha & Omega Semiconductor Inc.):

• Supplied in Tape & Reel (TR) packaging
• Current inventory: 3150 units
• Operating temperature range: -55°C to 150°C
• ROHS3 Compliant
• REACH Unaffected status

For applications requiring maximum operating temperature capability (above 150°C junction temperature), the SMLJ22CA-TP is the appropriate selection. For high-volume production requiring tape-and-reel packaging and RoHS3 compliance verification, the SMDJ22CA is suitable. Both components carry identical electrical specifications and package form factors, supporting direct substitution in circuit board layouts.

Frequently Asked Questions (FAQ)

Q: Can SMDJ22CA replace SMLJ22CA-TP in existing designs?

A: Yes. Both components share identical electrical specifications (22V standoff, 35.5V clamping, 3000W peak pulse power), identical package type (DO-214AB, SMC), and identical mounting method (surface mount). Direct substitution is supported without circuit redesign.

Q: What is the difference in peak pulse current between these parts?

A: SMLJ22CA-TP specifies 84.4A peak pulse current; SMDJ22CA specifies 84.6A. This 0.2A difference is within normal manufacturing tolerance and does not affect circuit performance or protection characteristics.

Q: Are there packaging differences between these parts?

A: Yes. SMLJ22CA-TP is supplied in bulk packaging, while SMDJ22CA is supplied in Tape & Reel (TR) format. Both use identical DO-214AB (SMC) component packages suitable for automated assembly.

Q: What is the operating temperature difference?

A: SMLJ22CA-TP operates from -55°C to 175°C junction temperature. SMDJ22CA operates from -55°C to 150°C junction temperature. For applications requiring sustained operation above 150°C, SMLJ22CA-TP is required.

Q: Are both parts RoHS compliant?

A: SMDJ22CA carries explicit ROHS3 Compliant certification. SMLJ22CA-TP does not list RoHS status in provided specifications. For applications requiring RoHS3 compliance documentation, SMDJ22CA is the appropriate selection.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Identical DO-214AB package dimensions and surface-mount footprints enable direct PCB layout compatibility. Component placement and solder reflow processes are identical.