SMCJ11C Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SMCJ11C is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in DO-214AB surface mount package. This component is designed for general-purpose transient voltage protection applications with a reverse standoff voltage of 11V and peak pulse power rating of 1500W. The SMCJ11C is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SMCJ11C

Littelfuse Inc.In Stock: 687SMCJ11C Datasheet

Current PartRFQ

SMCJ11CA

Good-Ark SemiconductorIn Stock: 17187SMCJ11CA Datasheet

MFR RecommendedRFQ

SMCJ11CA

Good-Ark SemiconductorIn Stock: 17187SMCJ11CA Datasheet

MFR RecommendedRFQ

SMCJ11CA-13-F

Diodes IncorporatedIn Stock: 3677SMCJ11CA-13-F Datasheet

MFR RecommendedRFQ

SMCJ11CA-TP

Micro Commercial CoIn Stock: 3958SMCJ11CA-TP Datasheet

MFR RecommendedRFQ

SMCJ11CAE3/TR13

Microchip TechnologyIn Stock: 1103SMCJ11CAE3/TR13 Datasheet

MFR RecommendedRFQ

SMCJ11CE3/TR13

Microchip TechnologyIn Stock: 996SMCJ11CE3/TR13 Datasheet

MFR RecommendedRFQ

SMLJ11CA

Bourns Inc.In Stock: 2865SMLJ11CA Datasheet

MFR RecommendedRFQ

SMLJ11CA-TP

Micro Commercial CoIn Stock: 843SMLJ11CA-TP Datasheet

MFR RecommendedRFQ

TV15C110JB-G

Comchip TechnologyIn Stock: 943TV15C110JB-G Datasheet

MFR RecommendedRFQ

TV30C110JB-G

Comchip TechnologyIn Stock: 1055TV30C110JB-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ11C is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Reverse standoff voltage: 11V (nominal)
• Bidirectional configuration: 1 channel
• Mounting type: Surface mount
• Package: DO-214AB / SMC form factor
• Operating temperature range: minimum -55°C to 150°C
• RoHS3 compliance

Secondary Compatibility Parameters:

• Voltage clamping at Ipp: 18.2V to 20.1V (acceptable range for 11V standoff devices)
• Peak pulse current: 82.4A to 164.84A (higher values provide additional margin)
• Peak pulse power: 1500W to 3000W (higher ratings are compatible)
• Moisture sensitivity: MSL 1 (unlimited)

Substitute parts are grouped into two categories based on power rating:

Category A - 1500W Rating (Direct Electrical Match): SMCJ11CA, SMCJ11CA-13-F, SMCJ11CA-TP, SMCJ11CAE3/TR13, SMCJ11CE3/TR13, TV15C110JB-G

Category B - 3000W Rating (Enhanced Power Capability): SMLJ11CA, SMLJ11CA-TP, TV30C110JB-G

All substitute parts maintain the 11V reverse standoff voltage, DO-214AB package, surface mount configuration, and ROHS3 compliance required for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active production components with ROHS3 compliance and MSL 1 rating, making them suitable for direct replacement of the obsolete SMCJ11C in new designs and production environments.

For applications requiring exact electrical match (1500W, 82.5A): SMCJ11CA-TP (Micro Commercial Co) provides the closest specification alignment with extended operating temperature range to 175°C and active product status with full availability.

For applications with extended temperature requirements: SMCJ11CAE3/TR13 (Microchip Technology) extends the lower operating temperature to -65°C while maintaining 1500W power rating and DO-214AB package compatibility.

For applications requiring enhanced transient protection margin: SMLJ11CA (Bourns Inc.) or TV30C110JB-G (Comchip Technology) provide doubled peak pulse current (164.8A) and power rating (3000W) while maintaining identical 11V standoff voltage and DO-214AB package, suitable for high-stress transient environments.

For high-volume procurement: SMCJ11CA (Good-Ark Semiconductor) offers the largest inventory (17,100 pcs) with active status and standard 1500W rating, providing supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can SMLJ11CA (3000W) be used in place of SMCJ11C (1500W)? A: Yes. The SMLJ11CA maintains identical 11V reverse standoff voltage, 18.2V clamping voltage, and DO-214AB package. The higher power rating (3000W vs 1500W) provides additional transient energy absorption capability without affecting circuit operation. This is a direct mechanical and electrical substitute with enhanced performance margin.

Q: What is the difference between SMCJ11CA and SMCJ11CA-TP? A: Both parts share identical electrical specifications (11V standoff, 18.2V clamping, 82.5A peak pulse, 1500W power). SMCJ11CA-TP (Micro Commercial Co) extends the operating temperature range to 175°C compared to 150°C for SMCJ11CA (Good-Ark Semiconductor). Selection depends on thermal environment requirements.

Q: Are all substitute parts available in DO-214AB package? A: Yes. All listed substitute parts use DO-214AB (SMC) surface mount package, ensuring mechanical compatibility with SMCJ11C PCB layouts and assembly processes.

Q: Do substitute parts maintain ROHS3 compliance? A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), meeting environmental and reliability requirements equivalent to the original SMCJ11C.

Q: Which substitute offers the best supply availability? A: SMCJ11CA (Good-Ark Semiconductor) provides the highest inventory level at 17,100 pcs with active product status, ensuring consistent long-term availability for production requirements.

Q: Can SMCJ11CE3/TR13 be used as a direct replacement? A: SMCJ11CE3/TR13 maintains 11V standoff voltage and DO-214AB package but exhibits different clamping characteristics (20.1V vs 19.11V) and lower peak pulse current (74.6A vs 82.5A). This part is suitable for applications where slightly higher clamping voltage is acceptable and peak pulse current margin is not critical.