SMLJ8.0A-TP Equivalent & Substitute Parts

Part Overview

The SMLJ8.0A-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 an 8V 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 718 units in stock. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, optimize procurement costs, and maintain design flexibility across manufacturing environments.

Substiute Parts

SMLJ8.0A-TP

Micro Commercial CoIn Stock: 735SMLJ8.0A-TP Datasheet

Current PartRFQ

SMDJ8.0A

Alpha & Omega Semiconductor Inc.In Stock: 12370SMDJ8.0A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMLJ8.0A-TP is determined by strict electrical and mechanical parameter matching within the TVS diode category. The following criteria establish valid equivalence:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 8V (typ)
• Voltage - Breakdown (Min): 8.89V
• Voltage - Clamping (Max) @ Ipp: 13.6V
• Current - Peak Pulse (10/1000µs): 220.6A
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

The SMDJ8.0A manufactured by Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and package specifications, qualifying it as a direct substitute. Both parts share identical voltage ratings, peak pulse current capacity, and power dissipation ratings. The mechanical form factor and surface-mount compatibility are equivalent. Packaging format differences (Bulk vs. Tape & Reel) do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

The SMDJ8.0A qualifies as a functional equivalent to the SMLJ8.0A-TP based on identical electrical performance across all critical parameters. Both components are active products with established supply chains.

Selection Considerations:

1. Electrical Compatibility: The SMDJ8.0A delivers identical voltage regulation, clamping characteristics, and peak pulse current handling. Direct substitution is electrically valid for all general-purpose interface protection applications.

2. Temperature Operating Range: The SMDJ8.0A operates to a maximum junction temperature of 150°C, compared to 175°C for the SMLJ8.0A-TP. Applications requiring sustained operation above 150°C require the original part specification.

3. Compliance Status: The SMDJ8.0A carries ROHS3 compliance certification. Both parts are REACH Unaffected and classified under ECCN EAR99.

4. Packaging and Procurement: The SMDJ8.0A is supplied in Tape & Reel format with significantly higher inventory availability (12,300 units vs. 718 units). The SMLJ8.0A-TP is supplied in Bulk packaging. Packaging format selection depends on assembly process requirements and order quantities.

5. Mechanical Fit: Both parts use identical DO-214AB (SMC) surface-mount packages with equivalent PCB footprints and reflow soldering profiles.

Frequently Asked Questions (FAQ)

Q: Can the SMDJ8.0A replace the SMLJ8.0A-TP in existing designs?

A: Yes, the SMDJ8.0A is electrically equivalent for applications operating within the -55°C to 150°C junction temperature range. Both parts share identical voltage ratings, clamping characteristics, and peak pulse current specifications. PCB footprints are compatible.

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

A: Bulk packaging supplies loose components suitable for manual assembly or small-volume production. Tape & Reel packaging provides components on continuous carrier tape for automated pick-and-place assembly equipment. Electrical performance is identical; packaging selection depends on manufacturing process requirements.

Q: Why does the SMDJ8.0A have a lower maximum operating temperature?

A: The SMDJ8.0A is rated to 150°C junction temperature, while the SMLJ8.0A-TP is rated to 175°C. This represents a 25°C difference in maximum thermal specification. Applications requiring sustained operation above 150°C must use the SMLJ8.0A-TP.

Q: Are both parts RoHS compliant?

A: The SMDJ8.0A carries ROHS3 compliance certification. The SMLJ8.0A-TP RoHS status is not specified in available documentation. Both parts are REACH Unaffected.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is valid when the following parameters match: Reverse Standoff Voltage (8V), Breakdown Voltage (8.89V min), Clamping Voltage (13.6V max @ Ipp), Peak Pulse Current (220.6A), and Peak Pulse Power (3000W). Package type (DO-214AB) and mounting method (Surface Mount) must also be identical.

Q: Is there a supply chain advantage to using the SMDJ8.0A?

A: The SMDJ8.0A has significantly higher inventory availability (12,300 units in stock vs. 718 units for the SMLJ8.0A-TP), which may provide procurement advantages for high-volume production or time-sensitive orders.