SMLJ58A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ58A-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 with a 58V 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 681 pieces available in bulk packaging. Substitute parts are identified to address inventory availability, packaging format preferences, or supply chain requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

SMLJ58A-TP

Micro Commercial CoIn Stock: 769SMLJ58A-TP Datasheet

Current PartRFQ

SMDJ58A

Alpha & Omega Semiconductor Inc.In Stock: 15716SMDJ58A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMLJ58A-TP is determined by strict equivalence across the following critical parameters:

Voltage Parameters: Reverse standoff voltage of 58V, breakdown voltage minimum of 64.4V, and clamping voltage maximum of 93.6V must remain constant. These parameters define the protection threshold and response characteristics of the TVS diode.

Current and Power Ratings: Peak pulse current of 32A (±0.1A tolerance acceptable) and peak pulse power of 3000W establish the transient energy absorption capability.

Package and Mounting: DO-214AB (SMC) surface-mount package and unidirectional single-channel configuration are mandatory for mechanical and electrical compatibility.

Temperature Range: Operating temperature range must support the application environment. The SMLJ58A-TP operates from -55°C to 175°C; substitute parts with reduced upper temperature limits may be acceptable depending on circuit requirements.

Zener Type: Single unidirectional channel configuration must be maintained.

The SMDJ58A from Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and package requirements, with packaging format as the primary differentiator (Tape & Reel versus Bulk).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (SMLJ58A-TP): Use when bulk packaging is required and operating temperature range extends to 175°C. Both parts maintain active production status with full compliance to REACH and EAR99 export classifications.

Substitute Selection (SMDJ58A): Use when Tape & Reel packaging format is preferred for automated assembly processes. This part is suitable for applications with maximum operating temperatures up to 150°C. The SMDJ58A carries RoHS3 compliance certification, providing additional environmental compliance documentation. Peak pulse current specification of 32.1A provides equivalent performance within standard engineering tolerances.

Compliance Considerations: Both parts are REACH Unaffected and classified as EAR99 for export control purposes. The SMDJ58A includes explicit RoHS3 Compliant status, which may be required for specific regulatory environments.

Frequently Asked Questions (FAQ)

Q: Can SMDJ58A replace SMLJ58A-TP in all applications?

A: SMDJ58A is electrically equivalent for applications operating at temperatures up to 150°C. If your circuit operates above 150°C and below 175°C, the SMLJ58A-TP is required. Both parts are identical in voltage ratings, current capacity, and power dissipation.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging is suitable for manual assembly or small-volume production. Tape & Reel packaging is designed for automated pick-and-place assembly equipment and high-volume manufacturing. Electrical performance is identical; packaging format affects assembly process compatibility only.

Q: Are the peak pulse current ratings of 32A and 32.1A interchangeable?

A: Yes. The 0.1A difference falls within standard engineering tolerances for TVS diode specifications and does not affect circuit protection performance or component reliability.

Q: Does the SMDJ58A RoHS3 compliance affect substitution eligibility?

A: RoHS3 compliance is an additional environmental certification that does not impact electrical or mechanical compatibility. It may be required by specific regulatory frameworks or customer specifications. The SMLJ58A-TP is REACH Unaffected, which is the applicable compliance standard for this product category.

Q: Can I use SMDJ58A if my application requires -55°C to 175°C operation?

A: No. The SMDJ58A maximum operating temperature is 150°C. For full -55°C to 175°C range, use SMLJ58A-TP. Exceeding the rated temperature range may result in component failure or degraded performance.

Q: Are both parts suitable for general-purpose interface protection?

A: Yes. Both SMLJ58A-TP and SMDJ58A are rated for general-purpose applications with identical voltage suppression and transient energy absorption characteristics.