SMLJ14CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ14CA-TP is a unidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 14V reverse standoff voltage with a 23.2V maximum clamping voltage and 129.4A peak pulse current capability in a DO-214AB (SMC) package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when electrical parameters, mechanical packaging, and operational ratings align within acceptable tolerances for direct board-level replacement.

Substiute Parts

SMLJ14CA-TP

Micro Commercial CoIn Stock: 683SMLJ14CA-TP Datasheet

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SMDJ14CA

Alpha & Omega Semiconductor Inc.In Stock: 10490SMDJ14CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ14CA-TP are qualified based on the following electrical and mechanical criteria:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Breakdown (Min): 15.6V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 129.4A
• Power - Peak Pulse: 3000W
• Bidirectional Channels: 1
• Package / Case: DO-214AB, SMC
• Type: Zener
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required

The SMDJ14CA from Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and package specifications. Both parts share identical voltage ratings, peak pulse current, and power dissipation characteristics. The mechanical footprint and pinout are compatible for direct PCB substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the SMLJ14CA-TP and SMDJ14CA are active production components with full RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The electrical specifications are identical across all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, and power dissipation. The mechanical package (DO-214AB, SMC) and mounting type (surface mount) are identical, enabling direct PCB-level substitution without layout modifications.

The primary operational difference is the maximum junction temperature rating: the SMLJ14CA-TP supports -55 to 175°C, while the SMDJ14CA supports -55 to 150°C. Component selection should account for the specific thermal environment of the application. For applications operating within the -55 to 150°C range, either part is suitable. For applications requiring operation above 150°C, the SMLJ14CA-TP is the appropriate choice.

Frequently Asked Questions (FAQ)

Q: Can SMDJ14CA be used as a direct replacement for SMLJ14CA-TP?

A: Yes, for applications operating within the -55 to 150°C temperature range. Both parts share identical electrical specifications (14V standoff, 23.2V clamping, 129.4A peak pulse current, 3000W power rating) and the same DO-214AB package. If your application requires operation above 150°C, the SMLJ14CA-TP is required.

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

A: No. Both parts use the DO-214AB (SMC) surface-mount package with identical pinout and footprint, allowing direct PCB substitution without layout changes.

Q: Do both parts meet current compliance standards?

A: Yes. Both SMLJ14CA-TP and SMDJ14CA are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for component procurement and use in regulated industries.

Q: What is the key parameter that determines substitution eligibility?

A: The critical parameters are the 14V reverse standoff voltage, 23.2V clamping voltage, 129.4A peak pulse current, and 3000W power dissipation rating. Any substitute must match these specifications exactly. The operating temperature range is a secondary consideration dependent on application requirements.

Q: Can these parts be used interchangeably in production?

A: Yes, provided the application thermal environment does not exceed 150°C. Both parts are active production components with established supply chains. Verify inventory availability and lead times with your component supplier before finalizing procurement decisions.