SMLJ150A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ150A-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 150V 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 732 units in stock inventory.

Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

SMLJ150A-TP

Micro Commercial CoIn Stock: 834SMLJ150A-TP Datasheet

Current PartRFQ

SMDJ150A

Alpha & Omega Semiconductor Inc.In Stock: 976SMDJ150A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ150A-TP are identified based on strict electrical and mechanical parameter matching within the TVS diode category. The substitution criteria are:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 150V (Typ)
• Voltage - Clamping (Max) @ Ipp: 243V
• Current - Peak Pulse (10/1000µs): 12.4A
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The SMDJ150A from Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and physical package requirements, making it a direct functional equivalent. Both parts operate within the same voltage and current specifications and share identical package geometry, enabling direct substitution in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

SMLJ150A-TP (Primary Part):

• Active production status with established supply
• 732 units currently in stock
• Operating temperature range: -55°C to 175°C
• REACH Unaffected compliance status
• Bulk packaging suitable for prototype and low-volume applications

SMDJ150A (Substitute Part):

• Active production status with established supply
• 882 units currently in stock
• Operating temperature range: -55°C to 150°C
• ROHS3 Compliant and REACH Unaffected compliance status
• Tape & Reel packaging suitable for high-volume automated assembly
• Provides higher inventory availability

Selection Basis: Use SMLJ150A-TP when applications require the full operating temperature range up to 175°C or when bulk packaging is preferred. Use SMDJ150A when applications operate within -55°C to 150°C range, when ROHS3 compliance is required, or when Tape & Reel packaging is necessary for automated production lines. Both parts are electrically and mechanically equivalent for standard interface protection applications.

Frequently Asked Questions (FAQ)

Q: Can SMDJ150A directly replace SMLJ150A-TP in existing designs?

A: Yes, for applications operating within the -55°C to 150°C temperature range. Both parts share identical electrical specifications (150V standoff, 243V clamping, 12.4A peak pulse, 3000W power) and the same DO-214AB package. The primary difference is the maximum operating temperature: SMLJ150A-TP extends to 175°C while SMDJ150A is rated to 150°C.

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

A: Bulk packaging is suitable for manual assembly, prototyping, and low-volume production. Tape & Reel packaging is designed for automated pick-and-place assembly equipment and high-volume manufacturing. Both formats contain the same electronic component; the difference is in delivery and handling format only.

Q: Are there compliance differences between these parts?

A: SMDJ150A carries ROHS3 Compliant certification, while SMLJ150A-TP does not specify this status. Both are REACH Unaffected. If ROHS3 compliance is a design requirement, SMDJ150A is the appropriate selection.

Q: Do these parts have identical electrical performance?

A: Yes. Both parts have identical voltage ratings (150V standoff, 167V breakdown minimum, 243V clamping maximum), identical peak pulse current (12.4A), and identical peak pulse power (3000W). They are functionally equivalent for transient voltage suppression applications.

Q: Which part should I select for high-temperature applications?

A: SMLJ150A-TP is required for applications where junction temperature exceeds 150°C, as it is rated to 175°C. SMDJ150A is limited to 150°C maximum junction temperature.