Equivalent & Substitute Parts Reference for SMLJ22A-TP Transient Voltage Suppressor (TVS) Diode

Part Overview

SMLJ22A-TP from Micro Commercial Co is an active, unidirectional Transient Voltage Suppressor (TVS) diode designed for general purpose surge protection applications. Encapsulated in a DO-214AB (SMC) surface mount package, it offers a reverse standoff voltage of 22V, breakdown voltage of 24.4V, and a clamping voltage of 35.5V at high pulse currents up to 84.4A and 3000W peak pulse power. Searching for alternative models is essential to address inventory requirements, packaging options, and procurement flexibility while ensuring electrical and mechanical compatibility.

Substiute Parts

SMLJ22A-TP

Micro Commercial CoIn Stock: 888SMLJ22A-TP Datasheet

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SMDJ22A

Alpha & Omega Semiconductor Inc.In Stock: 28173SMDJ22A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Alternative or equivalent TVS diodes must match the defined operational and package requirements for direct substitution. The grouping for substitution is strictly based on matching the following key parameters: part status, electrical ratings (reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, peak pulse power), channel count, mounting type, and package/case (DO-214AB, SMC). Only parts within these boundaries are considered valid substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both SMLJ22A-TP and SMDJ22A are listed as "Active" components in the Transient Voltage Suppressors (TVS) product category and are REACH unaffected. SMDJ22A is additionally ROHS3 compliant. These attributes meet typical compliance criteria for direct substitution under the provided regulatory information and inventory conditions.

Frequently Asked Questions (FAQ)

Q1: What must match for a TVS diode to be a valid substitute for SMLJ22A-TP?
A1: All core electrical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, peak pulse power, unidirectional channels, and package/case (DO-214AB, SMC) must be equivalent.

Q2: Are packaging types relevant to drop-in substitution?
A2: Packaging such as Bulk or Tape & Reel does not affect electrical compatibility; only board-level mounting and case must match for direct replacement.

Q3: What is the significance of compliance statuses like ROHS3 and REACH?
A3: Compliance statuses ensure adherence to environmental and safety regulations. SMDJ22A is ROHS3 compliant and both parts are REACH unaffected.

Q4: Can substitute TVS diodes be used in identical applications?
A4: Substitutes are suitable for general purpose protection where primary electrical and mechanical parameters align with the main part.

Q5: Are there any temperature specifications to consider?
A5: Both offer similar operational temperature ranges (-55°C minimum), but maximum junction temperature differs (175°C for SMLJ22A-TP and 150°C for SMDJ22A). Selection should account for specific system requirements within these limits.

Q6: Does part status affect substitute selection?
A6: Only active part numbers are eligible for substitution, ensuring continued availability and support in manufacturing processes.

Q7: Is supplier device package critical for compatibility?
A7: Yes, the supplier device package must match (DO-214AB in both cases) to guarantee board-level fit and function.