SMCJ11A V7G Equivalent & Substitute Parts

Part Overview

The SMCJ11A V7G is a unidirectional transient voltage suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation, designed for telecom applications. This component features an 11V reverse standoff voltage, 18.2V maximum clamping voltage, and 86A peak pulse current capability in a surface mount DO-214AB (SMC) package. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

SMCJ11A V7G

Taiwan Semiconductor CorporationIn Stock: 1204SMCJ11A V7G Datasheet

Current PartRFQ

SMCJ11A

Fairchild SemiconductorIn Stock: 12305SMCJ11A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ11A V7G is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff: 11V
• Voltage - Breakdown (Min): 12.2V
• Voltage - Clamping (Max) @ Ipp: 18.2V
• Power - Peak Pulse: 1500W
• Operating Temperature Range: -55°C to 150°C

Mechanical Parameters (Must Match):

• Package / Case: DO-214AB (SMC)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Functional Parameters (Must Match):

• Type: Zener
• Category: Transient Voltage Suppressors (TVS)

The substitute part SMCJ11A from Fairchild Semiconductor meets all electrical and mechanical requirements. The peak pulse current specification (82.5A versus 86A) represents a minor variance within the same voltage and power class, maintaining functional equivalence for the specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

The SMCJ11A from Fairchild Semiconductor is a direct functional equivalent to the discontinued SMCJ11A V7G from Taiwan Semiconductor Corporation. Both components share identical voltage specifications, thermal operating range, and package configuration. The Fairchild variant maintains active product status with substantial inventory availability (12,200 pieces), ensuring supply chain continuity.

Selection of the Fairchild SMCJ11A is supported by:

• Identical electrical performance across all critical voltage parameters
• Matching mechanical package specification (DO-214AB/SMC)
• Equivalent thermal operating range (-55°C to 150°C)
• Active product status with established supply chain
• Compliance with RoHS3 and REACH standards (consistent with original part)
• Peak pulse current specification (82.5A) within acceptable tolerance for the 1500W power class

No additional design modifications or board-level changes are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the Fairchild SMCJ11A replace the Taiwan Semiconductor SMCJ11A V7G in existing designs?

A: Yes. Both components share identical voltage specifications (11V standoff, 18.2V clamping), power rating (1500W), operating temperature range (-55°C to 150°C), and package configuration (DO-214AB/SMC). Direct substitution is supported without design modification.

Q: What is the significance of the 3.5A difference in peak pulse current (86A vs. 82.5A)?

A: Both components are rated for 1500W peak pulse power within the same voltage class. The current variance reflects manufacturing tolerance within the SMCJ series specification. Both parts meet the electrical requirements for the intended application.

Q: Are there any compliance or certification differences between the two parts?

A: Both components comply with RoHS3 and REACH standards. The ECCN and HTSUS classifications are identical. No compliance barriers exist for substitution.

Q: Is the DO-214AB package identical between manufacturers?

A: Yes. The DO-214AB (SMC) package is an industry-standard surface mount package with consistent mechanical and electrical interface specifications across manufacturers. Both parts use the same package footprint and mounting requirements.

Q: Why is the original part discontinued?

A: Product discontinuation at DiGi Electronics reflects supplier lifecycle management and inventory decisions. The Fairchild SMCJ11A remains in active production with established supply availability, providing continuity for applications requiring 11V TVS diode protection.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Identical package specification (DO-214AB/SMC) ensures mechanical and electrical compatibility. No PCB layout or assembly process modifications are required.