SMLJ70CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ70CA-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 70V 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 929 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

SMLJ70CA-TP

Micro Commercial CoIn Stock: 1038SMLJ70CA-TP Datasheet

Current PartRFQ

SMDJ70CA

Alpha & Omega Semiconductor Inc.In Stock: 24162SMDJ70CA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ70CA-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 (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Voltage - Clamping (Max) @ Ipp: 113V
• Current - Peak Pulse (10/1000µs): 26.6A
• Power - Peak Pulse: 3000W
• Bidirectional Channels: 1
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Type: Zener

The SMDJ70CA manufactured by Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and package specifications. The primary difference is packaging format (Tape & Reel versus Bulk) and operating temperature range maximum (150°C versus 175°C). These differences do not affect functional substitution in applications where the SMLJ70CA-TP operates within the SMDJ70CA temperature limits.

Parameter Comparison

Engineering Selection Recommendations

SMLJ70CA-TP Selection: Select the SMLJ70CA-TP when bulk packaging is required and applications operate within the full -55°C to 175°C temperature range. This part is manufactured by Micro Commercial Co and maintains active production status with current inventory of 929 pieces.

SMDJ70CA Selection: Select the SMDJ70CA as a substitute when Tape & Reel packaging is preferred for automated assembly processes and when the application operating temperature does not exceed 150°C (TJ). This part is manufactured by Alpha & Omega Semiconductor Inc., maintains active production status, and offers significantly higher inventory availability (24,149 pieces). The SMDJ70CA is ROHS3 compliant, providing additional regulatory compliance assurance.

Both parts are REACH Unaffected and classified under ECCN EAR99, with identical HTSUS codes (8541.10.0080), confirming regulatory equivalence for export and trade purposes.

Frequently Asked Questions (FAQ)

Q: Can SMDJ70CA replace SMLJ70CA-TP in all applications?

A: The SMDJ70CA provides electrical equivalence for applications where the maximum junction temperature does not exceed 150°C. If your design requires operation up to 175°C (TJ), the SMLJ70CA-TP is the appropriate choice. All other electrical parameters are identical.

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

A: Bulk packaging (SMLJ70CA-TP) is suitable for manual assembly, prototyping, and lower-volume production. Tape & Reel packaging (SMDJ70CA) is optimized for automated pick-and-place assembly equipment and high-volume manufacturing. Both formats contain identical components with identical electrical performance.

Q: Are there compliance differences between these parts?

A: Both parts are REACH Unaffected and classified as EAR99. The SMDJ70CA carries additional ROHS3 compliance certification. Both share the same HTSUS classification (8541.10.0080). Verify specific compliance requirements for your application and region.

Q: What does "Voltage - Clamping (Max) @ Ipp" mean?

A: This parameter specifies the maximum voltage across the TVS diode when peak pulse current (26.6A in this case) flows through it during a transient event. Both parts clamp at 113V maximum, ensuring consistent protection performance.

Q: Can I mix SMLJ70CA-TP and SMDJ70CA in the same production run?

A: Yes, both parts are electrically and mechanically equivalent for PCB mounting and soldering. However, packaging format differences (Bulk versus Tape & Reel) affect assembly logistics and handling procedures. Coordinate with your manufacturing and procurement teams to manage packaging transitions.

Q: What is the base product number significance?

A: The base product number (SMLJ70 or SMDJ70) identifies the core TVS diode design with 70V rating. Suffixes like "CA" and "TP" indicate specific packaging and lead configurations. Both parts share the same base design, confirming functional equivalence.