SMBG48C-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG48C-E3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection applications. This component features a 48V reverse standoff voltage with an 85.5V maximum clamping voltage and 7A peak pulse current capability in a surface-mount DO-215AA (SMB) package.

The SMBG48C-E3/5B is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

SMBG48C-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1209SMBG48C-E3/5B Datasheet

Current PartRFQ

SMBG48CA-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 750SMBG48CA-E3/5B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG48C-E3/5B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 48V
• Voltage - Breakdown (Min): 53.3V
• Voltage - Clamping (Max) @ Ipp: Must be within acceptable operating range
• Current - Peak Pulse (10/1000µs): Minimum 7A
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• Bidirectional Channels: 1
• Type: Zener

The SMBG48CA-E3/5B qualifies as a direct substitute based on matching reverse standoff voltage (48V), breakdown voltage (53.3V), identical package configuration (DO-215AA), surface-mount capability, and compatible operating temperature range. While the clamping voltage and peak pulse current differ slightly, these variations remain within the functional parameters of the SMBG48 base product family.

Parameter Comparison

Engineering Selection Recommendations

The SMBG48CA-E3/5B is the qualified substitute for the obsolete SMBG48C-E3/5B. Both components maintain identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility. The substitute part carries Active product status, providing assured long-term availability and supply chain continuity.

The SMBG48CA-E3/5B is supplied in Tape & Reel (TR) packaging, which is standard for production environments. Both parts share the same base product number (SMBG48), manufacturer, and TransZorb® series designation, confirming functional equivalence within the Vishay TVS diode portfolio.

Frequently Asked Questions (FAQ)

Q: Can the SMBG48CA-E3/5B directly replace the SMBG48C-E3/5B in existing designs?

A: Yes. Both components share identical reverse standoff voltage (48V), breakdown voltage (53.3V), package configuration (DO-215AA), and operating temperature range (-55°C to 150°C). The substitute part meets all critical electrical and mechanical parameters required for direct substitution.

Q: What is the difference in clamping voltage between these parts?

A: The SMBG48C-E3/5B has a maximum clamping voltage of 85.5V, while the SMBG48CA-E3/5B has a maximum clamping voltage of 77.4V. Both values are within the functional specification of the SMBG48 base product family and do not affect substitution eligibility.

Q: Does the peak pulse current difference affect compatibility?

A: No. The SMBG48CA-E3/5B provides 7.8A peak pulse current compared to 7A in the original part. The higher current rating of the substitute part maintains full compatibility and does not introduce any functional limitations.

Q: Are there packaging differences between these parts?

A: Both parts use the DO-215AA (SMB Gull Wing) surface-mount package. The SMBG48CA-E3/5B is supplied in Tape & Reel (TR) format, which is standard for automated assembly. This packaging difference does not affect electrical or mechanical compatibility.

Q: What is the product status difference, and why does it matter?

A: The SMBG48C-E3/5B is classified as Obsolete, while the SMBG48CA-E3/5B is Active. Active status ensures continued manufacturing, availability, and technical support from Vishay. This makes the substitute part the recommended choice for new designs and ongoing production.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the SMBG48C-E3/5B and SMBG48CA-E3/5B are ROHS3 Compliant with MSL rating of 1 (Unlimited), ensuring full regulatory compliance for industrial and commercial applications.