SMLJ12CA-TP Equivalent & Substitute Parts

Part Overview

The SMLJ12CA-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 a 12V 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 841 pieces available in inventory.

Identifying equivalent and substitute parts is necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits component optimization across manufacturing sources while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

SMLJ12CA-TP

Micro Commercial CoIn Stock: 950SMLJ12CA-TP Datasheet

Current PartRFQ

SMDJ12CA

Alpha & Omega Semiconductor Inc.In Stock: 35453SMDJ12CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMLJ12CA-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): 12V
• Voltage - Breakdown (Min): 13.3V
• Voltage - Clamping (Max) @ Ipp: 19.9V
• Current - Peak Pulse (10/1000µs): 150.6A (±0.2A tolerance acceptable)
• Power - Peak Pulse: 3000W
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener

The SMDJ12CA from Alpha & Omega Semiconductor Inc. meets all critical electrical parameters and mechanical specifications, qualifying it as a direct substitute. Minor variations in peak pulse current (150.8A vs 150.6A) and maximum operating temperature (-55°C to 150°C vs -55°C to 175°C) remain within acceptable engineering tolerances for general-purpose interface protection applications.

Parameter Comparison

Engineering Selection Recommendations

SMLJ12CA-TP (Primary Component): Product status is Active with 841 pieces in current inventory. REACH compliance status is REACH Unaffected. ECCN classification is EAR99. This component is suitable for immediate procurement when supply availability is confirmed.

SMDJ12CA (Substitute Component): Product status is Active with significantly higher inventory availability at 35,400 pieces. REACH compliance status is REACH Unaffected. RoHS3 compliance is confirmed. ECCN classification is EAR99. This component is suitable for selection when extended supply assurance or higher inventory levels are required. The substitute maintains identical electrical performance across all critical parameters and identical mechanical compatibility.

Both components satisfy the same regulatory and compliance requirements for general-purpose interface protection applications. Selection between the primary and substitute part should be based on procurement lead time, inventory availability, and supply chain requirements rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Can SMDJ12CA be used as a direct replacement for SMLJ12CA-TP in existing designs?

A: Yes. Both components are bidirectional Zener TVS diodes with identical voltage ratings (12V reverse standoff, 13.3V breakdown minimum, 19.9V clamping maximum), identical power dissipation (3000W peak pulse), and identical mechanical packaging (DO-214AB, SMC surface mount). Peak pulse current specifications differ by 0.2A (150.6A vs 150.8A), which is within acceptable engineering tolerance for general-purpose interface protection.

Q: Are there any temperature operating range differences between these parts?

A: The SMLJ12CA-TP operates from -55°C to 175°C (TJ), while the SMDJ12CA operates from -55°C to 150°C (TJ). The substitute part has a 25°C lower maximum junction temperature. Applications operating consistently above 150°C junction temperature should retain the primary component. For applications with maximum junction temperatures at or below 150°C, both parts are functionally equivalent.

Q: Do both parts use the same package and mounting specifications?

A: Yes. Both components use the DO-214AB (SMC) surface-mount package with identical mechanical dimensions and land pattern requirements. No PCB layout modifications are necessary when substituting between these parts.

Q: What compliance certifications apply to both parts?

A: Both SMLJ12CA-TP and SMDJ12CA are REACH Unaffected and classified as EAR99 for export control purposes. The SMDJ12CA additionally carries RoHS3 compliance certification. Both parts are suitable for applications requiring these regulatory standards.

Q: How do the inventory levels compare between these parts?

A: SMLJ12CA-TP has 841 pieces in stock, while SMDJ12CA has 35,400 pieces in stock. The substitute part offers significantly higher inventory availability for applications requiring larger quantities or extended supply assurance.