SMLJ8.5A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ8.5A-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 1136 pieces in stock.

Substitute parts are identified to provide alternative sourcing options when the primary component becomes unavailable, when supply chain optimization is required, or when design flexibility permits equivalent component selection based on matching electrical and mechanical specifications.

Substiute Parts

SMLJ8.5A-TP

Micro Commercial CoIn Stock: 1147SMLJ8.5A-TP Datasheet

Current PartRFQ

SMDJ8.5A

Alpha & Omega Semiconductor Inc.In Stock: 12477SMDJ8.5A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMLJ8.5A-TP is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Breakdown (Min): 9.44V
• Voltage - Clamping (Max) @ Ipp: 14.4V
• Current - Peak Pulse (10/1000µs): 208.4A
• Power - Peak Pulse: 3000W

Mechanical Specifications:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

Application Compatibility:

• General Purpose interface protection

The SMDJ8.5A manufactured by Alpha & Omega Semiconductor Inc. meets all electrical and mechanical substitution criteria. Both components share identical voltage ratings, peak pulse current specifications, and power dissipation ratings. Both are housed in the DO-214AB surface-mount package and function as unidirectional Zener-type TVS diodes.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (SMLJ8.5A-TP): The SMLJ8.5A-TP remains the specified component for applications requiring the full operating temperature range of -55°C to 175°C. This component is actively produced and maintains REACH Unaffected compliance status. Current inventory of 1136 pieces supports immediate procurement.

Substitute Component (SMDJ8.5A): The SMDJ8.5A is suitable for applications where the operating temperature range of -55°C to 150°C is acceptable. This component is manufactured by Alpha & Omega Semiconductor Inc. and is actively produced with significantly higher inventory availability (12400 pieces). The SMDJ8.5A is RoHS3 Compliant and maintains REACH Unaffected status. The substitute is available in Tape & Reel packaging format, which may be preferred for automated assembly processes.

Selection Criteria:

• Select SMLJ8.5A-TP when maximum junction temperature capability of 175°C is required
• Select SMDJ8.5A when operating temperature does not exceed 150°C and Tape & Reel packaging is preferred
• Both components are suitable for general-purpose interface protection with identical electrical performance within their respective temperature ranges

Frequently Asked Questions (FAQ)

Q: Can SMDJ8.5A be used as a direct replacement for SMLJ8.5A-TP?

A: The SMDJ8.5A is electrically equivalent to the SMLJ8.5A-TP across all voltage, current, and power specifications. Direct substitution is permissible when the application operating temperature does not exceed 150°C. If the application requires operation above 150°C, the SMLJ8.5A-TP must be used.

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

A: Bulk packaging is suitable for manual assembly and small-volume applications. Tape & Reel (TR) packaging is designed for automated pick-and-place assembly processes and high-volume production. Both formats contain the same component; packaging selection depends on assembly methodology.

Q: Are there compliance differences between these parts?

A: Both components maintain REACH Unaffected and EAR99 ECCN status. The SMDJ8.5A carries RoHS3 Compliance certification. The SMLJ8.5A-TP compliance status for RoHS is not specified in the provided data. Verify RoHS requirements with your specific application standards before selection.

Q: What is the significance of the operating temperature range difference?

A: The SMLJ8.5A-TP operates to 175°C junction temperature, while the SMDJ8.5A operates to 150°C. This 25°C difference affects component reliability in high-temperature environments. Applications in automotive, industrial, or high-power environments may require the extended range of the SMLJ8.5A-TP.

Q: Do both parts use the same package footprint?

A: Yes. Both the SMLJ8.5A-TP and SMDJ8.5A use the DO-214AB surface-mount package (SMC). PCB footprints are identical, permitting direct physical substitution without layout modifications.

Q: What inventory considerations apply to these parts?

A: The SMLJ8.5A-TP has 1136 pieces in stock. The SMDJ8.5A has 12400 pieces in stock. For applications permitting the SMDJ8.5A, the higher inventory availability may reduce lead times and support supply chain continuity.