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Semtech Corporation SC3BA6
- Part No.:
- SC3BA6
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 5-Rectangle
- Datasheet:
-
SC3BA6.pdf
- Description:
- BRIDGE RECT 3PHASE 600V 6A
- Quantity:
- Payment:
- Shipping:
Inventory:3,976
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Product details
Overview
SC3BA6 from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the SC3BA6 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, clamping stability across temperature and current, and direct alternatives for 22V bus protection with low-voltage overshoot control.
Technical Context
The SC3BA6 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-from 24A to 40A and across −40°C to +125°C due to decreasing RDS(on) under surge.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. Its 6-pin DFN package integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3), requiring all pins to be connected for full 40A rating and minimal parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) on unsymmetrical lines. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - enables robust handling in manufacturing and end-user environments without degradation. |
| Dynamic Resistance | 20mΩ - contributes to flat clamping behavior and minimizes voltage rise under increasing surge current. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for VBus/power-line protection; not intended for high-speed data lines (e.g., USB SS). |
Pinout & Package
SC3BA6 is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads and UL 94V-0 molding compound. All pins must be soldered for rated performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must connect to solid ground plane via multiple vias to sustain 40A surge current. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected bus (e.g., USB PD VBus); single straight trace routing required for uniform current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping across current & temperature | 27.5–28V clamping maintained from 24A to 40A and −40°C to +125°C - eliminates derating uncertainty in thermal or high-current designs. |
| Surge-rated FET protection architecture | Replaces traditional TVS junction conduction with low-RDS(on) shunt switching - reduces energy dissipation in silicon and improves reliability under repeated surges. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against burst noise in industrial motor drives and PLC interfaces. |
| Space-optimized DFN-6 footprint | 1.6mm × 1.6mm area - saves >50% board space vs. SO-8 or SOT-23 TVS solutions while supporting same 40A rating. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines in USB-C ports with Power Delivery negotiation, exposed to ESD during plug insertion and lightning-induced surges on long cables. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or e-fuse IC. Use Value: Maintains 27.5–28V clamping at full 40A even at 125°C - prevents overvoltage damage to 24V-tolerant PD controllers where conventional TVS would exceed 35V. |
Use Scenario: Safeguarding input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways subjected to induced surges on 24V supply rails. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across load switch FET's drain-source during EOS events, preventing avalanche failure. Use Value: 20mΩ dynamic resistance ensures minimal voltage overshoot during fast-rising surges - keeps VDS below 30V threshold of typical 30V-rated load switches. |
| Notebook/Tablet Main Power Rail Protection | Storage Device 22V Backup Power Line |
Use Scenario: Securing 22V auxiliary power rails feeding display backlight drivers or SSD power management ICs in thin-client and tablet platforms. IC Role / Device Role / Timing Role: Standalone overvoltage suppressor on main DC input, coordinated with upstream fuse and downstream LDOs. Use Value: 175pF capacitance avoids signal integrity impact on DC rail; ±30kV ESD rating ensures survival during factory handling and field service. |
Use Scenario: Protecting 22V backup battery or supercapacitor charging lines in NVMe SSDs and enterprise storage enclosures exposed to hot-swap transients. IC Role / Device Role / Timing Role: Bidirectional transient clamp on unidirectional power path, absorbing reverse-polarity and surge energy during insertion/removal. Use Value: Stable clamping across temperature enables reliable operation in sealed, thermally constrained storage chassis where ambient reaches 85°C+. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, pinout, and package - direct manufacturer-recommended replacement part number for SC3BA6. | No functional difference; used interchangeably in Semtech documentation and reference designs. | Select TDS2211P when sourcing from authorized distributors with full traceability and Semtech warranty coverage. |
| uClamp2411ZA | 24V working voltage, lower 22V clamping (typ. 24V @ 24A), 12A IPP rating, SOD-323 package - smaller footprint but lower surge capacity. | Suitable only for CC/SBU lines or low-energy 24V rails; insufficient for 40A VBus protection. | Choose uClamp2411ZA only for secondary protection on auxiliary signals where board space is critical and surge threat is limited to ESD-only. |
Compared with SC3BA6, TDS2211P offers identical performance and drop-in compatibility, while uClamp2411ZA provides compact ESD-only protection at lower surge ratings - making SC3BA6 the sole choice for full 40A, 22V industrial-grade bus protection.
Availability
SC3BA6 is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and notebook 22V power rail designs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/REACH compliance.
Supply support for SC3BA6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The SC3BA6 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 20–24V power rail protection with superior clamping stability and surge endurance.
FAQ
What is the exact package type and dimensions of SC3BA6?
SC3BA6 uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad-less construction. Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. The land pattern follows Semtech's recommended layout with 0.30mm pitch and 0.50mm pad width - no thermal pad is required as energy is dissipated in the FET channel, not the junction.
Does SC3BA6 meet IEC 61000-4-5 Level 4 surge requirements?
Yes, SC3BA6 is rated for ±1kV (1.2/50μs voltage, 8/20μs current, RS = 42Ω) on unsymmetrical lines and supports 40A (8/20μs) peak pulse current - exceeding IEC 61000-4-5 Level 4 requirements. Its 27.5–28V clamping at 40A ensures protected circuits remain within safe operating limits during full-level surges.
How does SC3BA6 differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), SC3BA6 maintains near-constant clamping (27.5–28V) from 24A to 40A and across −40°C to +125°C. This results from its FET-based architecture with decreasing RDS(on) under surge, eliminating thermal derating concerns inherent to junction-limited TVS devices.
Can SC3BA6 be used on high-speed data lines like USB SuperSpeed?
No, SC3BA6 is not suitable for USB SuperSpeed (TX/RX) or other high-speed differential data lines. Its 175pF junction capacitance would severely degrade signal integrity. SC3BA6 is designed exclusively for power rails and low-frequency I/O lines such as USB PD VBus, CC, or load switch inputs - use RClamp3371ZC (<0.25pF) for SuperSpeed protection instead.
What is the maximum operating temperature range for SC3BA6?
SC3BA6 is specified for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range - measured at 27.5–28V at 40A from −40°C to +125°C - enabling deployment in automotive under-hood, industrial motor control, and sealed computing environments without thermal derating.
SC3BA6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 5-Rectangle
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Three Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 3 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SC3BA6 FAQ
1.How can I place an order for SC3BA6 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3BA6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SC3BA6 reliable?
The price and inventory of SC3BA6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3BA6 is usually 5 days.
3.What payment methods are accepted for SC3BA6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3BA6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3BA6?
SC3BA6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3BA6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SC3BA6?
For technical support, including SC3BA6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3BA6 requirements.
6.How does Aetrix verify that SC3BA6 is sourced from the original manufacturer or authorized distributors?
All SC3BA6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SC3BA6 meets industry standards.
7.What is the process for return or replacement of SC3BA6?
All SC3BA6 units undergo pre-shipment inspection (PSI). If there is an issue with SC3BA6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SC3BA6 part is unused and in its original packaging.
Return procedure for SC3BA6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC3BA6 Tags
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