SMBG12C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG12C-E3/52 is a Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for general-purpose transient voltage suppression applications with a 12V reverse standoff voltage and 22V maximum clamping voltage. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

SMBG12C-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 791SMBG12C-E3/52 Datasheet

Current PartRFQ

SMBG12CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4356SMBG12CA-E3/52 Datasheet

DirectRFQ

SMBG12CA

Microsemi CorporationIn Stock: 3515SMBG12CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG12C-E3/52 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 12V
• Voltage - Breakdown (Min): 13.3V
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Bidirectional Channels: 1

Acceptable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Substitute parts may have lower clamping voltages (19.9V vs. 22V original) while maintaining the same standoff and breakdown voltages
• Current - Peak Pulse (10/1000µs): Substitute parts may have higher current ratings (30.2A vs. 27.3A original)
• Operating Temperature Range: Substitute parts may have extended lower temperature limits (-65°C vs. -55°C original)

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, package type, and mounting configuration to ensure functional compatibility in the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

SMBG12CA-E3/52 (Vishay General Semiconductor - Diodes Division) is the primary substitute for the obsolete SMBG12C-E3/52. This part maintains identical electrical specifications for reverse standoff voltage (12V) and breakdown voltage (13.3V), ensuring direct functional compatibility. The lower clamping voltage (19.9V vs. 22V) and higher peak pulse current (30.2A vs. 27.3A) represent improved performance characteristics. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for new designs and ongoing production support.

SMBG12CA (Microsemi Corporation) is an alternative substitute that meets all critical electrical parameters and package requirements. This part offers an extended operating temperature range (-65°C to 150°C vs. -55°C to 150°C), providing additional thermal margin for demanding applications. However, this part is RoHS non-compliant, which may restrict its use in applications subject to RoHS regulations or customer requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBG12CA-E3/52 be used as a direct replacement for SMBG12C-E3/52?

A: Yes. Both parts share identical reverse standoff voltage (12V), breakdown voltage (13.3V), and package configuration (DO-215AA, SMB Gull Wing). The SMBG12CA-E3/52 features a lower clamping voltage (19.9V) and higher peak pulse current (30.2A), which represent equivalent or improved performance for transient suppression applications.

Q: What is the difference between SMBG12CA-E3/52 and SMBG12CA?

A: Both parts are electrically identical with the same voltage ratings and current specifications. The primary difference is RoHS compliance status: SMBG12CA-E3/52 is ROHS3 compliant, while SMBG12CA is RoHS non-compliant. Selection depends on regulatory and customer requirements for your application.

Q: Are there any temperature range considerations when substituting?

A: The original SMBG12C-E3/52 operates from -55°C to 150°C. Both substitute parts maintain this range or extend it. SMBG12CA-E3/52 matches the original range exactly. SMBG12CA extends the lower limit to -65°C, providing additional thermal margin if required by your application.

Q: Do the substitute parts use the same package and mounting configuration?

A: Yes. All three parts use the DO-215AA (SMB Gull Wing) surface mount package, ensuring identical PCB footprint and assembly compatibility.

Q: What is the significance of the lower clamping voltage in the substitute parts?

A: The substitute parts clamp at 19.9V compared to the original 22V. This lower clamping voltage provides faster transient suppression and is functionally equivalent or superior for protecting circuits designed around the 12V standoff specification.