SMCJ350C Equivalent & Substitute Parts

Part Overview

The SMCJ350C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 350V reverse standoff voltage rating and 595.35V maximum clamping voltage with 2.6A peak pulse current capability in a surface-mount DO-214AB package.

The SMCJ350C is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this voltage suppression specification.

Substiute Parts

SMCJ350C

Littelfuse Inc.In Stock: 807SMCJ350C Datasheet

Current PartRFQ

SMCJ350CA

Littelfuse Inc.In Stock: 3324SMCJ350CA Datasheet

MFR RecommendedRFQ

SMCJ350CA

Littelfuse Inc.In Stock: 3324SMCJ350CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ350C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage: 350V (Typ)
• Bidirectional channel configuration: 1 channel
• Peak pulse current rating: 2.6A (10/1000µs)
• Peak pulse power dissipation: 1500W
• Zener diode type classification
• General-purpose application category

Mechanical Compatibility Criteria:

• Surface-mount packaging
• DO-214AB package footprint (SMC)
• Operating temperature range: -55°C ~ 150°C (TJ)

Compliance Requirements:

• ROHS3 compliance
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The SMCJ350CA meets all electrical and mechanical substitution criteria while maintaining active product status and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The SMCJ350CA is the direct substitute for the obsolete SMCJ350C. Both components share identical electrical ratings for reverse standoff voltage, peak pulse current, and peak pulse power dissipation. Both maintain the same surface-mount DO-214AB package footprint and operating temperature range.

The SMCJ350CA offers the advantage of active product status with confirmed inventory availability (3239 pcs), ensuring long-term supply chain continuity. Both parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity classification, supporting equivalent handling and storage requirements.

The SMCJ350CA exhibits lower maximum clamping voltage (567V versus 595.35V) and higher minimum breakdown voltage (391V versus 370.35V), representing tighter voltage regulation characteristics within the same 350V standoff specification.

Frequently Asked Questions (FAQ)

Q: Can SMCJ350CA directly replace SMCJ350C in existing designs?

A: Yes. Both components share identical reverse standoff voltage (350V), peak pulse current (2.6A), peak pulse power (1500W), and DO-214AB package specifications. The SMCJ350CA is the manufacturer-recommended substitute for the obsolete SMCJ350C.

Q: What are the differences in voltage characteristics between these parts?

A: The SMCJ350CA exhibits a maximum clamping voltage of 567V compared to the SMCJ350C at 595.35V. The SMCJ350CA has a minimum breakdown voltage of 391V versus 370.35V for the SMCJ350C. Both maintain the same 350V reverse standoff voltage rating.

Q: Are the package footprints identical?

A: Yes. Both the SMCJ350C and SMCJ350CA use the DO-214AB surface-mount package (SMC designation), ensuring identical PCB footprint compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both components are ROHS3 compliant with MSL Level 1 moisture sensitivity classification, supporting equivalent regulatory and handling requirements.

Q: Why is the SMCJ350C listed as obsolete?

A: The SMCJ350C has been discontinued by the manufacturer. The SMCJ350CA represents the active production equivalent with identical core electrical specifications and packaging.