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SMDA05.T Equivalent & Substitute Parts
Part Overview
The SMDA05.T is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Semtech Corporation, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5V reverse standoff voltage with an 11V maximum clamping voltage and handles peak pulse currents of 17A (8/20µs). The SMDA05.T is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Semtech Corporation |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Unidirectional Channels | 4 |
| Voltage - Reverse Standoff (Typ) | 5V (Max) |
| Voltage - Breakdown (Min) | 6V |
| Voltage - Clamping (Max) @ Ipp | 11V |
| Current - Peak Pulse (10/1000µs) | 17A (8/20µs) |
| Power - Peak Pulse | 300W |
| Capacitance @ Frequency | 400pF @ 1MHz |
| Operating Temperature | -55°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO |
Substitute Part Grouping Explanation
Substitution of the SMDA05.T is determined by strict equivalence across the following critical parameters:
- Unidirectional channel configuration (4 channels)
- Voltage ratings: 5V reverse standoff, 6V minimum breakdown, 11V maximum clamping
- Current handling: 17A peak pulse (8/20µs)
- Power dissipation: 300W peak pulse
- Capacitance: 400pF @ 1MHz
- Operating temperature range: -55°C ~ 125°C
- Package type: 8-SOIC surface mount
- Manufacturer: Semtech Corporation (SMDA series)
The SMDA05.TBT qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is packaging format and product status.
Parameter Comparison
| Parameter | SMDA05.T | SMDA05.TBT |
|---|---|---|
| Manufacturer | Semtech Corporation | Semtech Corporation |
| Category | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) |
| Type | Zener | Zener |
| Unidirectional Channels | 4 | 4 |
| Voltage - Reverse Standoff (Typ) | 5V (Max) | 5V (Max) |
| Voltage - Breakdown (Min) | 6V | 6V |
| Voltage - Clamping (Max) @ Ipp | 11V | 11V |
| Current - Peak Pulse (10/1000µs) | 17A (8/20µs) | 17A (8/20µs) |
| Power - Peak Pulse | 300W | 300W |
| Capacitance @ Frequency | 400pF @ 1MHz | 400pF @ 1MHz |
| Operating Temperature | -55°C ~ 125°C (TJ) | -55°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SO | 8-SO |
| Product Status | Obsolete | Active |
| Packaging Format | Bulk | Tape & Reel (TR) |
| RoHS Status | RoHS Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The SMDA05.TBT is the direct functional equivalent of the SMDA05.T. Both components share identical electrical and mechanical specifications within the SMDA series from Semtech Corporation. Selection between these parts should be based on the following factors:
Product Status: The SMDA05.T is obsolete, while SMDA05.TBT maintains active production status. For new designs or ongoing production requiring long-term component availability, SMDA05.TBT is the appropriate choice.
Compliance: SMDA05.TBT carries ROHS3 compliance certification, representing current regulatory standards. SMDA05.T holds RoHS compliance. Both are REACH unaffected.
Packaging: SMDA05.T is supplied in bulk format, while SMDA05.TBT is supplied in Tape & Reel (TR) format. Packaging selection depends on production volume and assembly line requirements.
Inventory Availability: SMDA05.TBT currently maintains higher inventory levels (1800 Pcs) compared to SMDA05.T (858 Pcs), supporting supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Can SMDA05.TBT directly replace SMDA05.T in existing designs?
A: Yes. Both components are electrically and mechanically identical. They share the same voltage ratings (5V standoff, 11V clamping), current handling (17A peak pulse), power dissipation (300W), and 8-SOIC package configuration. No circuit modifications are required.
Q: What is the difference between SMDA05.T and SMDA05.TBT?
A: The primary differences are product status, packaging format, and compliance certification. SMDA05.T is obsolete and supplied in bulk; SMDA05.TBT is active production and supplied in Tape & Reel format with ROHS3 compliance.
Q: Does the Tape & Reel packaging affect electrical performance?
A: No. Packaging format (bulk versus Tape & Reel) is a supply and assembly consideration only. Electrical and thermal characteristics remain identical.
Q: Are there any temperature or frequency limitations when substituting?
A: No. Both parts operate across the identical temperature range (-55°C ~ 125°C) and maintain the same capacitance specification (400pF @ 1MHz).
Q: Which part should be specified for new production?
A: SMDA05.TBT should be specified for new designs and ongoing production. It maintains active status, current compliance certifications, and reliable supply availability.
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