SMBG15C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG15C-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 protection applications. The device features a 15V reverse standoff voltage with a 26.9V maximum clamping voltage and 22.3A peak pulse current capability in a DO-215AA (SMB) package.

The SMBG15C-E3/52 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	15	V
Voltage - Breakdown (Min)	16.7	V
Voltage - Clamping (Max) @ Ipp	26.9	V
Current - Peak Pulse (10/1000µs)	22.3	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-215AA, SMB Gull Wing	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by strict alignment of electrical and mechanical parameters. The SMBG15C-E3/52 can be substituted with parts meeting the following criteria:

Critical Parameters for Substitution:

Reverse standoff voltage: 15V (Typ)
Breakdown voltage (Min): 16.7V
Package type: DO-215AA (SMB Gull Wing)
Mounting type: Surface Mount
Bidirectional channels: 1
Operating temperature range: -55°C to 150°C (TJ)
RoHS and compliance status: ROHS3 Compliant

Allowable Variation Parameters:

Clamping voltage (Max) @ Ipp: Within acceptable circuit protection margins
Peak pulse current: Must meet or exceed application requirements
Peak pulse power: Must meet or exceed application requirements

The SMBG15CA-E3/52 qualifies as a direct substitute based on identical reverse standoff voltage, breakdown voltage, package configuration, and compliance certifications. Variations in clamping voltage and peak pulse current are within acceptable engineering tolerances for general-purpose transient voltage suppression applications.

Parameter Comparison

Parameter	SMBG15C-E3/52 (Main)	SMBG15CA-E3/52 (Substitute)
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Series	TransZorb®	TransZorb®
Product Status	Obsolete	Active
Type	Zener	Zener
Bidirectional Channels	1	1
Voltage - Reverse Standoff (Typ)	15V	15V
Voltage - Breakdown (Min)	16.7V	16.7V
Voltage - Clamping (Max) @ Ipp	26.9V	24.4V
Current - Peak Pulse (10/1000µs)	22.3A	24.6A
Power - Peak Pulse	600W	600W
Operating Temperature	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-215AA, SMB Gull Wing	DO-215AA, SMB Gull Wing
Supplier Device Package	SMBG (DO-215AA)	SMBG (DO-215AA)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The SMBG15CA-E3/52 is the qualified substitute for the obsolete SMBG15C-E3/52. Selection is based on the following engineering criteria:

Product Status: The SMBG15CA-E3/52 maintains active product status with Vishay, ensuring ongoing availability and manufacturing support. The original SMBG15C-E3/52 is obsolete and no longer in production.

Electrical Compatibility: Both devices share identical reverse standoff voltage (15V Typ) and breakdown voltage (16.7V Min), ensuring equivalent circuit protection thresholds. The substitute exhibits a lower clamping voltage (24.4V vs. 26.9V) and higher peak pulse current (24.6A vs. 22.3A), both favorable characteristics for transient suppression performance.

Compliance & Certifications: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical EAR99 export classification. Moisture sensitivity level (MSL 1 - Unlimited) is identical, supporting equivalent handling and storage requirements.

Package & Mounting: Identical DO-215AA (SMB Gull Wing) package configuration and surface-mount designation ensure direct PCB compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SMBG15CA-E3/52 be used as a direct replacement for the SMBG15C-E3/52?

A: Yes. Both devices share identical reverse standoff voltage, breakdown voltage, package configuration, and operating temperature range. The substitute is electrically and mechanically compatible for general-purpose transient voltage suppression applications.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active) and performance characteristics. The SMBG15CA-E3/52 provides lower clamping voltage (24.4V vs. 26.9V) and higher peak pulse current (24.6A vs. 22.3A). Both maintain 600W peak pulse power rating.

Q: Are there packaging differences between the SMBG15C-E3/52 and SMBG15CA-E3/52?

A: Both parts use the DO-215AA (SMB Gull Wing) surface-mount package. The SMBG15CA-E3/52 is supplied in Tape & Reel (TR) format, while the original part number does not specify packaging format in available data.

Q: What compliance certifications apply to the substitute part?

A: The SMBG15CA-E3/52 is ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Moisture sensitivity level is MSL 1 (Unlimited), matching the original part.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both the SMBG15C-E3/52 and SMBG15CA-E3/52 operate across -55°C to 150°C (TJ) temperature range.

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