SMLJ8.5CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ8.5CA-TP is a bidirectional transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose interface protection applications. This surface-mount component operates with an 8.5V 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 9100 units in stock.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative packaging formats are required for specific manufacturing processes.

Substiute Parts

SMLJ8.5CA-TP

Micro Commercial CoIn Stock: 9195SMLJ8.5CA-TP Datasheet

Current PartRFQ

SMDJ8.5CA

Alpha & Omega Semiconductor Inc.In Stock: 12246SMDJ8.5CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMLJ8.5CA-TP is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• 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
• Bidirectional Channels: 1
• Type: Zener

Mechanical Equivalence Criteria:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount

The SMDJ8.5CA manufactured by Alpha & Omega Semiconductor Inc. meets all electrical and mechanical equivalence requirements. Packaging format differs (Tape & Reel versus Bulk), which affects procurement and handling but does not impact electrical performance or physical compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

SMDJ8.5CA Selection Criteria:

The SMDJ8.5CA is a direct electrical equivalent to the SMLJ8.5CA-TP with identical performance across all critical transient voltage suppression parameters. Both components are active products from established manufacturers with REACH compliance and EAR99 export classification.

The primary distinction is packaging format: SMDJ8.5CA is supplied in Tape & Reel format with 12,200 units in stock, compared to the SMLJ8.5CA-TP in Bulk format with 9,100 units. Tape & Reel packaging is standard for automated assembly processes and reduces component handling time.

Operating temperature range differs slightly: SMLJ8.5CA-TP operates to 175°C junction temperature, while SMDJ8.5CA operates to 150°C. For applications requiring sustained operation above 150°C, the SMLJ8.5CA-TP is the appropriate selection. For standard industrial and consumer applications within the -55°C to 150°C range, both parts are functionally interchangeable.

Both components carry ROHS3 compliance status (SMDJ8.5CA explicitly noted; SMLJ8.5CA-TP status not specified in provided data).

Frequently Asked Questions (FAQ)

Q: Can SMDJ8.5CA replace SMLJ8.5CA-TP in existing designs?

A: Yes, for applications operating within -55°C to 150°C junction temperature. All electrical parameters—clamping voltage, peak pulse current, and power dissipation—are identical. Physical footprint and mounting compatibility are equivalent in DO-214AB packages.

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

A: Bulk packaging supplies loose components in quantities suitable for manual assembly or small-batch production. Tape & Reel packaging places components on continuous carrier tape for automated pick-and-place assembly equipment. Electrical performance is identical; packaging affects manufacturing process compatibility and handling efficiency.

Q: Are there temperature limitations when substituting SMDJ8.5CA for SMLJ8.5CA-TP?

A: The SMDJ8.5CA maximum junction temperature is 150°C, compared to 175°C for SMLJ8.5CA-TP. Applications requiring sustained operation above 150°C must use SMLJ8.5CA-TP. Standard industrial applications typically operate within the 150°C limit of both parts.

Q: Do both parts meet RoHS compliance?

A: SMDJ8.5CA is explicitly ROHS3 compliant. SMLJ8.5CA-TP ROHS status is not specified in the provided technical data. Verify RoHS compliance requirements with the manufacturer before final component selection.

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

A: Substitution requires matching: 8.5V reverse standoff voltage, 9.44V minimum breakdown voltage, 14.4V maximum clamping voltage, 208.4A peak pulse current, and 3000W peak pulse power. All these parameters are identical between SMLJ8.5CA-TP and SMDJ8.5CA.

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

A: Yes, provided the assembly equipment supports Tape & Reel input (SMDJ8.5CA) or manual placement (SMLJ8.5CA-TP Bulk). Both components use identical DO-214AB footprints and soldering profiles. Verify equipment compatibility before changeover.