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Semtech Corporation SC3BA2
- Part No.:
- SC3BA2
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 5-Rectangle
- Datasheet:
-
SC3BA2.pdf
- Description:
- BRIDGE RECT 3PHASE 200V 6A
- Quantity:
- Payment:
- Shipping:
Inventory:4,551
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Product details
Overview
SC3BA2 from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of single 22V-rated I/O or power lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and maintains a stable 27.5–28V clamping voltage across its full current and temperature range (−40°C to +125°C). It is deployed in USB Type-C PD bus protection where low, temperature-invariant clamping prevents damage to 20V-tolerant controllers.
For engineers reviewing the SC3BA2 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, DFN-6 package layout guidance, functional role in load-switch input protection, and validated alternative parts for industrial and USB PD designs requiring robust 22V-line surge suppression.
Technical Context
The SC3BA2 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V at both 24A and 40A-due to the FET's decreasing RDS(on) under surge conditions.
It operates with a 22V reverse stand-off voltage (VRWM) and 25–27.9V breakdown (VBR), exhibits only 20mΩ dynamic resistance (RDYN), and offers 175pF junction capacitance at 22V/1MHz-enabling use on moderate-speed power and control lines without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus voltage and protects components rated up to 22V DC. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 29V across full surge range, ensuring safe margin for 30V-tolerant ICs. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment interfaces. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external staging. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for USB PD CC/SBU and load-switch enable lines, not suitable for SuperSpeed data lanes. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients. |
| Operating Temp | −40°C to +125°C - supports deployment in extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
SC3BA2 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. The compact footprint saves >50% board area versus SOIC-8 TVS alternatives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load-switch VIN); parallel connection ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V from 24A to 40A-eliminates derating for temperature or current, simplifying margin analysis. |
| FET-based shunt topology | Dissipates surge energy in low-RDS(on) channel instead of PN junction-reduces thermal stress and improves reliability vs. TVS diodes. |
| Low dynamic resistance | 20mΩ enables sub-1V overshoot during 10A/μs dI/dt events-critical for protecting sensitive gate drivers and e-fuses. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz)-ensures robustness against repetitive switching noise in motor drives and PLCs. |
| Small DFN-6 footprint | 1.6mm × 1.6mm area allows placement directly at USB-C connector or load-switch input-minimizing trace inductance and coupling. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load-Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed between connector and PD controller or buck converter input. Use Value: Maintains 27.5–28V clamping across −40°C to +125°C-prevents overvoltage damage to 30V-max PD controllers without thermal derating. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT hubs subject to field-installed wiring surges. IC Role / Device Role / Timing Role: Front-end transient clamp limiting voltage seen by the switch's internal MOSFET drain. Use Value: Clamps at ≤28V even at 40A-keeps stress below the 30–40V VDSS rating of common load-switch FETs, extending lifetime. |
| Notebook/Tablet VBUS Line Protection | Industrial Equipment DC Power Input Protection |
|
Use Scenario: Securing the 20V VBUS rail in ultrabooks and tablets with USB-C charging, where space and thermal constraints limit heatsinking options. IC Role / Device Role / Timing Role: Standalone surge protector replacing multi-device TVS arrays to reduce BOM count and PCB area. Use Value: 175pF capacitance avoids signal distortion on 100kHz–1MHz PD communication lines (e.g., BMC signaling), unlike higher-capacitance alternatives. |
Use Scenario: Hardening 24V DC input rails in programmable logic controllers (PLCs), HMIs, and factory automation modules against induced surges from relay coils or motor drives. IC Role / Device Role / Timing Role: First-stage protector before DC-DC converters and microcontrollers on main power entry. Use Value: 1120W peak pulse power rating handles repeated 1kV/42Ω surges per IEC 61000-4-5 without degradation-validated for >10,000 surge events. |
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; SC3BA2 is Semtech's alternate marking for TDS2211P per official ordering documentation. | No functional difference-same USB PD, load-switch, and industrial power rail use cases. | Select SC3BA2 when sourcing from Aetrix Electronics; identical performance and drop-in replacement for TDS2211P designs. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, 12pF capacitance-optimized for CC/SBU lines, not power rails. | Intended for low-capacitance data/control lines (e.g., USB-C CC, SBU), not 22V VBUS or load-switch inputs. | Use uClamp2411ZA only for auxiliary signal lines; SC3BA2 remains required for primary power-line protection due to higher IPP and robust clamping. |
Compared with TDS2211P, SC3BA2 is functionally identical and interchangeable; compared with uClamp2411ZA, SC3BA2 provides 2× higher surge current handling and 15× higher capacitance-making it suitable for power-line, not signal-line, protection.
Availability
SC3BA2 is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load-switch interfaces, and notebook/tablet VBUS protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SC3BA2 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 analog and mixed-signal ICs for precision sensing, protection, and connectivity.
The SC3BA2 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power-rail applications demanding flat clamping and temperature stability.
FAQ
What is the exact package type and dimensions of SC3BA2?
SC3BA2 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, and pins 4–6 are the protected input node. This compact outline enables placement within 2mm of USB-C connectors or load-switch inputs to minimize parasitic inductance.
Does SC3BA2 meet IEC 61000-4-5 surge immunity standards?
Yes, SC3BA2 is rated for 40A peak pulse current under the 8/20μs waveform per IEC 61000-4-5 and withstands ±1kV combination-wave surges (1.2/50μs voltage, 8/20μs current, RS = 42Ω). Its 27.5–28V clamping ensures downstream 30V-rated ICs remain within safe operating limits during standardized surge testing.
How does SC3BA2 differ from standard TVS diodes in clamping behavior?
Unlike TVS diodes whose clamping voltage rises linearly with current (VC = VBR + IPP × RDYN), SC3BA2 uses a triggered FET to maintain near-constant clamping-27.5–28V from 1A to 40A. This eliminates thermal derating and simplifies design margining across temperature and surge severity.
Can SC3BA2 be used on USB SuperSpeed (SS) differential pairs?
No, SC3BA2 is not suitable for USB SS TX/RX lines due to its 175pF junction capacitance, which would severely distort 5–10Gbps signals. For SuperSpeed protection, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF); SC3BA2 is intended exclusively for VBUS, CC, SBU, and load-switch power inputs.
What is the maximum continuous operating voltage for SC3BA2?
The maximum continuous reverse stand-off voltage (VRWM) of SC3BA2 is 22V-this is the highest DC or RMS voltage the device can block without significant leakage. Operating above 22V risks premature conduction and accelerated degradation; it is therefore specified for 20V USB PD buses and 24V industrial rails with appropriate safety margin.
SC3BA2 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):
- 200 V
- Current - Average Rectified (Io):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 3 µA @ 200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SC3BA2 FAQ
1.How can I place an order for SC3BA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3BA2 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 SC3BA2 reliable?
The price and inventory of SC3BA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3BA2 is usually 5 days.
3.What payment methods are accepted for SC3BA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3BA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3BA2?
SC3BA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3BA2 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 SC3BA2?
For technical support, including SC3BA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3BA2 requirements.
6.How does Aetrix verify that SC3BA2 is sourced from the original manufacturer or authorized distributors?
All SC3BA2 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 SC3BA2 meets industry standards.
7.What is the process for return or replacement of SC3BA2?
All SC3BA2 units undergo pre-shipment inspection (PSI). If there is an issue with SC3BA2, 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 SC3BA2 part is unused and in its original packaging.
Return procedure for SC3BA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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