SMLJ58CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ58CA-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 across a temperature range of -55°C to 175°C and is currently in active production status. The part is available in bulk packaging with 3474 pieces in stock.

TVS diodes like the SMLJ58CA-TP are essential for protecting sensitive electronic circuits from transient voltage spikes and electrostatic discharge events. Identifying equivalent and substitute parts is necessary when managing supply chain continuity, optimizing inventory costs, or addressing component availability constraints while maintaining circuit protection performance.

Substiute Parts

SMLJ58CA-TP

Micro Commercial CoIn Stock: 3530SMLJ58CA-TP Datasheet

Current PartRFQ

SMDJ58CA

Alpha & Omega Semiconductor Inc.In Stock: 105425SMDJ58CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMLJ58CA-TP is determined by strict alignment of 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 be matched exactly to ensure equivalent circuit protection performance.

Current Rating: Peak pulse current of 32A (10/1000µs pulse) must be maintained or exceeded to handle transient events without component degradation.

Power Dissipation: Peak pulse power rating of 3000W (3kW) establishes the thermal handling capability during transient suppression.

Package and Mounting: DO-214AB surface-mount package (SMC) is mandatory for physical and electrical compatibility with existing PCB layouts.

Bidirectional Channels: Single-channel configuration must be preserved for circuit topology compatibility.

Type Classification: Zener-type TVS diode classification must remain consistent.

The SMDJ58CA from Alpha & Omega Semiconductor Inc. meets all substitution criteria within the specified parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The SMLJ58CA-TP remains the preferred choice when the full operating temperature range of -55°C to 175°C is required for the application.

Substitute Selection: The SMDJ58CA is functionally equivalent for applications operating within the -55°C to 150°C temperature window. This substitute maintains all critical voltage and current parameters while offering significantly higher inventory availability (105,400 pieces in stock versus 3,474 pieces for the primary part).

Compliance Considerations: The SMDJ58CA carries RoHS3 compliance certification, whereas the SMLJ58CA-TP compliance status is not specified in the provided data. Both parts are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8541.10.0080.

Product Status: Both components maintain active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the SMDJ58CA replace the SMLJ58CA-TP in all applications?

A: The SMDJ58CA is functionally equivalent for applications operating within -55°C to 150°C. Applications requiring operation above 150°C must use the SMLJ58CA-TP to ensure specified performance across the full -55°C to 175°C range.

Q: Are the voltage parameters identical between these parts?

A: Yes. Both parts share identical reverse standoff voltage (58V), breakdown voltage minimum (64.4V), and clamping voltage maximum (93.6V). Peak pulse current differs marginally (32A versus 32.1A), which is within acceptable engineering tolerance for TVS diode substitution.

Q: Is the DO-214AB package compatible with existing PCB designs?

A: Yes. Both the SMLJ58CA-TP and SMDJ58CA use the DO-214AB surface-mount package (SMC), ensuring direct physical and electrical compatibility with PCB layouts designed for either component.

Q: What is the significance of the 3000W peak pulse power rating?

A: The 3000W rating defines the maximum thermal energy the diode can dissipate during a 10/1000µs transient pulse event. Both substitute parts maintain this specification, ensuring equivalent protection performance.

Q: Does RoHS3 compliance affect substitution decisions?

A: RoHS3 compliance is a regulatory requirement for certain markets and applications. The SMDJ58CA explicitly carries RoHS3 certification. If RoHS3 compliance is mandatory for your application, verify the SMLJ58CA-TP compliance status with the manufacturer before selection.

Q: Are there any package or pinout differences between these parts?

A: No. Both components use identical DO-214AB surface-mount packaging with the same pinout configuration, enabling direct substitution without PCB redesign.