SMLJ90A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ90A-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 90V 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 1131 pieces available in bulk packaging. Identifying equivalent substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate different packaging or inventory requirements while maintaining identical electrical performance.

Substiute Parts

SMLJ90A-TP

Micro Commercial CoIn Stock: 1188SMLJ90A-TP Datasheet

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SMDJ90A

Alpha & Omega Semiconductor Inc.In Stock: 15156SMDJ90A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ90A-TP are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 90V
• Voltage - Breakdown (Min): 100V
• Voltage - Clamping (Max) @ Ipp: 146V
• Current - Peak Pulse (10/1000µs): 20.6A
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The SMDJ90A from Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and mechanical specifications. Substitution is valid across these parameters. Differences in packaging format (Tape & Reel versus Bulk) and operating temperature range do not affect functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMLJ90A-TP and SMDJ90A are active production components with identical electrical specifications and mechanical compatibility. Selection between these parts should be based on the following factors:

SMLJ90A-TP (Micro Commercial Co): Select this part when bulk packaging is required for high-volume manufacturing operations or when the extended operating temperature range to 175°C is necessary for applications in elevated-temperature environments.

SMDJ90A (Alpha & Omega Semiconductor Inc.): Select this part when Tape & Reel packaging is preferred for automated assembly processes, or when supply availability from this manufacturer is advantageous. The operating temperature range to 150°C is suitable for standard industrial and consumer applications.

Both parts carry REACH Unaffected status and EAR99 ECCN classification. The SMDJ90A includes RoHS3 compliance certification. Component selection should account for procurement lead times, inventory availability, and assembly process requirements rather than electrical performance, as both parts are functionally equivalent in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can SMDJ90A be used as a direct replacement for SMLJ90A-TP in existing designs?

A: Yes. Both parts share identical electrical specifications including voltage ratings (90V standoff, 100V breakdown, 146V clamping), peak pulse current (20.6A), and power dissipation (3000W). Both use the DO-214AB (SMC) surface-mount package. The parts are electrically and mechanically interchangeable.

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

A: Bulk packaging supplies loose components suitable for manual assembly or small-batch operations. Tape & Reel packaging places components on continuous carrier tape for automated pick-and-place assembly equipment. This is a logistics and manufacturing process consideration, not an electrical one.

Q: Does the operating temperature range difference affect substitution?

A: The SMLJ90A-TP operates to 175°C while the SMDJ90A operates to 150°C. For applications operating below 150°C, both parts perform identically. For applications requiring operation above 150°C, the SMLJ90A-TP is required. Verify your application's maximum junction temperature before selecting the substitute.

Q: Are there any compliance or certification differences?

A: The SMDJ90A includes RoHS3 compliance certification, while the SMLJ90A-TP does not list this certification in the provided data. Both parts are REACH Unaffected and carry EAR99 ECCN classification. Verify compliance requirements for your specific application or region.

Q: What inventory levels are available for each part?

A: SMLJ90A-TP has 1131 pieces in stock (Bulk packaging). SMDJ90A has 15100 pieces in stock (Tape & Reel packaging). Availability may influence procurement decisions for time-sensitive projects.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes, provided the assembly process accommodates the packaging format. If the PCB assembly line uses automated pick-and-place equipment, Tape & Reel packaging (SMDJ90A) is standard. If manual assembly or bulk component handling is used, Bulk packaging (SMLJ90A-TP) is appropriate. The electrical function and footprint are identical.