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SMBG17-E3/52 Equivalent & Substitute Parts
Part Overview
The SMBG17-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for general-purpose transient voltage protection applications. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 17V |
| Voltage - Breakdown (Min) | 18.9V |
| Voltage - Clamping (Max) @ Ipp | 30.5V |
| Current - Peak Pulse (10/1000µs) | 19.7A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C 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 of the SMBG17-E3/52 is determined by the following critical electrical and mechanical parameters:
- Reverse standoff voltage: 17V (nominal)
- Breakdown voltage minimum: 18.9V
- Package type: DO-215AA (SMB Gull Wing)
- Mounting configuration: Surface mount
- Unidirectional channel configuration: 1 channel
- Series classification: TransZorb®
- Compliance standards: ROHS3, REACH Unaffected
The SMBG17A-E3/52 qualifies as a direct substitute based on matching all critical parameters within the allowed electrical and mechanical specifications for this TVS diode category.
Parameter Comparison
| Parameter | SMBG17-E3/52 | SMBG17A-E3/52 |
|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | Vishay General Semiconductor - Diodes Division |
| Category | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) |
| Series | TransZorb® | TransZorb® |
| Type | Zener | Zener |
| Unidirectional Channels | 1 | 1 |
| Voltage - Reverse Standoff (Typ) | 17V | 17V |
| Voltage - Breakdown (Min) | 18.9V | 18.9V |
| Voltage - Clamping (Max) @ Ipp | 30.5V | 27.6V |
| Current - Peak Pulse (10/1000µs) | 19.7A | 21.7A |
| Power - Peak Pulse | 600W | 600W |
| Operating Temperature | -55°C to 150°C (TJ) | -55°C to 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 |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The SMBG17A-E3/52 is the qualified substitute for the obsolete SMBG17-E3/52. Both components maintain identical reverse standoff voltage (17V), breakdown voltage minimum (18.9V), and operating temperature range (-55°C to 150°C). Both are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
The SMBG17A-E3/52 offers improved availability as an active product with higher peak pulse current capability (21.7A versus 19.7A) and a lower clamping voltage (27.6V versus 30.5V), providing enhanced transient suppression performance within the same package footprint and thermal specifications.
Frequently Asked Questions (FAQ)
Q: Can SMBG17A-E3/52 be used as a direct replacement for SMBG17-E3/52?
A: Yes. Both components share identical reverse standoff voltage, breakdown voltage, operating temperature range, package type (DO-215AA), and mounting configuration. The SMBG17A-E3/52 is the active product successor.
Q: What are the differences between these two parts?
A: The primary differences are clamping voltage (27.6V for SMBG17A-E3/52 versus 30.5V for SMBG17-E3/52) and peak pulse current (21.7A versus 19.7A). The SMBG17A-E3/52 provides superior transient suppression performance.
Q: Are there any package or mounting differences?
A: No. Both components use the DO-215AA (SMB Gull Wing) surface mount package with identical mechanical specifications.
Q: Do both parts meet current compliance standards?
A: Yes. Both SMBG17-E3/52 and SMBG17A-E3/52 are ROHS3 compliant and REACH unaffected.
Q: What is the availability status of each part?
A: SMBG17-E3/52 is classified as obsolete. SMBG17A-E3/52 is an active product with current manufacturing support.
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