SMBG33C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG33C-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 33V reverse standoff voltage rating and 59V 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

SMBG33C-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1038SMBG33C-E3/52 Datasheet

Current PartRFQ

SMBG33CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2711SMBG33CA-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMBG33C-E3/52 has one direct substitute within the same product family: SMBG33CA-E3/52. Substitution eligibility is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33V (identical across both parts)
• Voltage - Breakdown (Min): 36.7V (identical across both parts)
• Mounting Type: Surface Mount (identical)
• Package / Case: DO-215AA, SMB Gull Wing (identical)
• Operating Temperature Range: -55°C ~ 150°C (identical)
• Series: TransZorb® (identical family)

The substitute part maintains electrical compatibility through matching reverse standoff voltage, breakdown voltage, and thermal operating range. Both components share the same physical package footprint and mounting characteristics, enabling direct board-level substitution.

Parameter Comparison

Engineering Selection Recommendations

The SMBG33CA-E3/52 is the recommended substitute for the obsolete SMBG33C-E3/52. Selection is based on the following engineering criteria:

Product Status: The substitute part maintains Active status with Vishay, ensuring continued availability and manufacturing support. The main part's Obsolete designation necessitates transition to an actively produced alternative.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying current environmental and regulatory requirements. Moisture Sensitivity Level 1 (Unlimited) is identical, eliminating storage and handling requirement changes.

Electrical Compatibility: The substitute maintains identical reverse standoff voltage (33V) and breakdown voltage (36.7V), ensuring circuit protection thresholds remain unchanged. The clamping voltage differential (59V vs. 53.3V) and increased peak pulse current (11.3A vs. 10.2A) represent improved performance characteristics within the same power dissipation envelope (600W).

Physical Compatibility: Identical package designation (DO-215AA, SMB Gull Wing) and surface-mount configuration enable direct board-level replacement without PCB redesign or rework.

Frequently Asked Questions (FAQ)

Q: Can SMBG33CA-E3/52 be used as a direct replacement for SMBG33C-E3/52?

A: Yes. Both components share identical reverse standoff voltage (33V), breakdown voltage (36.7V), operating temperature range (-55°C to 150°C), and physical package (DO-215AA, SMB Gull Wing). The substitute is electrically and mechanically compatible for direct substitution.

Q: What are the differences between these two parts?

A: The primary differences are product status (Obsolete vs. Active), clamping voltage (59V vs. 53.3V), peak pulse current (10.2A vs. 11.3A), and packaging format (Bulk vs. Tape & Reel). The substitute offers improved current handling within the same power rating.

Q: Does the lower clamping voltage of the substitute affect circuit protection?

A: No. Both parts maintain the same reverse standoff voltage (33V) and breakdown voltage (36.7V), which determine circuit protection activation. The clamping voltage difference represents improved transient suppression performance.

Q: Are there any compliance or certification differences?

A: No. Both components maintain identical ROHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited). Regulatory and environmental requirements are equivalent.

Q: What packaging options are available?

A: The main part is supplied in Bulk packaging. The substitute is available in Tape & Reel (TR) format, which is standard for automated assembly processes. Both formats contain the same component.