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Semtech Corporation SCBH4F
- Part No.:
- SCBH4F
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-Square
- Datasheet:
-
SCBH4F.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 4A
- Quantity:
- Payment:
- Shipping:
Inventory:6,907
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping across temperature and current range; it is deployed in USB Type-C PD bus protection where low, flat clamping voltage prevents damage to 20V-tolerant PD controllers.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over 40A surge current and −40°C to +125°C operation, DFN 1.6×1.6mm 6-lead layout compatibility, and shunt-FET-based protection architecture versus conventional TVS diodes.
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold; this architecture delivers near-constant clamping voltage independent of peak pulse current magnitude due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and dynamic resistance of 20mΩ (8/20μs), enabling robust protection of unsymmetrical lines per IEC 61000-4-5 ±1kV (1.2/50μs, RS=42Ω) while maintaining 175pF junction capacitance at 22V bias.
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) - ensures downstream 20V-tolerant ICs (e.g., USB PD controllers) remain below absolute maximum ratings during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets industrial surge immunity requirements including IEC 61000-4-5 Level 3 (±1kV, RS=42Ω). |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 ESD immunity for external connectors in portable and industrial equipment. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough to avoid signal integrity degradation on 22V power rails, but not suitable for high-speed data lines. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping response by minimizing voltage rise (ΔV = I × R) across full surge current range. |
| Package | DFN 1.6mm × 1.6mm × 0.55mm, 6-lead - supports ultra-compact PCB layouts with minimal board area and thermal mass. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 pcs/reel).
| 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 sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Input terminal for protected line (e.g., VBus in USB Type-C); parallel connection of all three pins ensures uniform current distribution and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. current | 27.5–28V across 24–40A (8/20μs) - eliminates design margin uncertainty caused by rising TVS clamping with surge amplitude. |
| Temperature-stable clamping | Clamping remains ~27.5V from −40°C to +125°C - avoids derating or thermal shutdown in industrial ambient conditions. |
| Shunt-FET protection architecture | RDS(on) collapses under surge, reducing effective dynamic resistance to <0.1Ω - enables superior energy diversion vs. fixed-RDYN TVS diodes. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz & 5kHz) - protects against repetitive fast transients in motor drives and PLC environments. |
| Low leakage at working voltage | 130–600nA at 22V - minimizes standby power loss in battery-powered IoT and portable devices. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the 20V-capable VBus line in USB Type-C ports supporting Power Delivery up to 100W. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or load switch input. Use Value: Maintains clamping at ≤28V across full temperature and current range, preventing latch-up or gate oxide damage in 20V-rated PD controllers. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) exposed to lightning-induced surges in remote meters or robotics. IC Role / Device Role / Timing Role: Primary EOS shunt device limiting voltage stress on internal FET of load switch during 40A transients. Use Value: Clamps at 27.5V-well below typical 30V+ absolute max rating of load switch inputs-enabling reliable operation without derating. |
| IoT Device Power Rail Protection | Storage Device 22V Supply Line Protection |
Use Scenario: Securing 22V auxiliary power rails in edge-node IoT gateways subjected to ESD during field servicing or connector mating. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input rail upstream of PMIC or DC-DC converter. Use Value: Delivers ±30kV ESD immunity and 40A surge capability in 1.6×1.6mm footprint-critical for space-constrained wireless sensor hubs. |
Use Scenario: Protecting 22V supply lines feeding NVMe SSD power management ICs or high-voltage storage controllers. IC Role / Device Role / Timing Role: High-energy transient clamp on primary power input to prevent brownout or latch-up during hot-plug events. Use Value: Stable 27.5V clamping ensures downstream 24V-tolerant regulators remain within safe operating area during 8/20μs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-02HTG | Lower 20V working voltage, 30A IPP rating, higher 33V clamping at 30A, SOD-323 package (larger, 2.5×1.3mm). | Targeted at 12–15V systems (e.g., USB 2.0 VBus, industrial sensors); insufficient for 22V USB PD bus. | Select only for lower-voltage rails where 22V standoff is unnecessary and board space allows larger package. |
| SM712-02HTG | Bidirectional TVS, 12V standoff, 300W peak power, 12V clamping at 10A, SOT-23-3 package. | Designed for RS-485/RS-232 data line protection-not rated for 22V power rail or 40A surges. | Use only for low-voltage bidirectional signal lines; not a functional substitute for TDS2211P's unidirectional 22V power rail protection. |
Compared with SP1003-02HTG and SM712-02HTG, the TDS2211P uniquely delivers 22V standoff, 40A surge capacity, and flat 27.5V clamping in a 1.6×1.6mm DFN-making it the only viable option for compact, high-reliability 22V power rail protection in USB PD and industrial load-switch applications.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch protection, and 22V IoT power rail designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TDS2211P 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 signal integrity.
The TDS family was engineered specifically for high-energy EOS protection of power and interface lines where conventional TVS diodes fail to maintain safe clamping margins under temperature or current stress.
FAQ
What is the maximum continuous operating voltage for the TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC or RMS without significant leakage or conduction. This makes the TDS2211P suitable for protecting 20V USB PD bus lines and other 22V-rated power rails where sustained voltage exposure occurs during normal operation.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P achieves constant clamping via a shunt-FET architecture: a precision trigger circuit activates a low-RDS(on) MOSFET during transients, causing its on-resistance to decrease as surge current rises. This results in clamping voltage stabilizing near the trigger circuit's breakdown voltage (~27.5V), unlike conventional TVS diodes whose clamping rises linearly with current (VC = VBR + IPP × RDYN). The TDS2211P maintains 27.5–28V clamping from 24A to 40A (8/20μs).
Can the TDS2211P be used on high-speed data lines like USB SuperSpeed or PCIe?
No-the TDS2211P is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above ~100MHz. It is intended exclusively for 22V power or low-frequency control lines. For USB SuperSpeed (TX/RX), Semtech recommends low-capacitance TVS devices such as RClamp3371ZC (<0.25pF), as specified in the TDS2211P application note.
What is the recommended PCB layout for optimal surge performance of the TDS2211P?
For optimal surge performance, all three IN pins (4, 5, 6) must be connected in parallel via a single short, wide trace to the protected line, and all three GND pins (1, 2, 3) must connect directly to a solid ground plane using multiple vias. The device must be placed adjacent to the connector-no more than 2mm trace length-to minimize inductance and prevent transient coupling into adjacent nets. Thermal pads are unnecessary, as energy is dissipated in the FET channel, not the die junction.
Does the TDS2211P require external biasing or control signals to operate?
No-the TDS2211P is a fully autonomous, passive protection device requiring no external power, bias, or control signals. It operates solely on the voltage transient itself: when the input voltage exceeds the internal trigger circuit's breakdown threshold (~25–27.9V), the drive circuit activates the shunt FET, diverting surge current to ground. This self-triggering behavior makes the TDS2211P ideal for "set-and-forget" protection in safety-critical or maintenance-free deployments.
SCBH4F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 4-Square
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
SCBH4F FAQ
1.How can I place an order for SCBH4F through Aetrix?
Please submit a Request for Quotation (RFQ) for SCBH4F 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 SCBH4F reliable?
The price and inventory of SCBH4F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCBH4F is usually 5 days.
3.What payment methods are accepted for SCBH4F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCBH4F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCBH4F?
SCBH4F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCBH4F 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 SCBH4F?
For technical support, including SCBH4F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCBH4F requirements.
6.How does Aetrix verify that SCBH4F is sourced from the original manufacturer or authorized distributors?
All SCBH4F 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 SCBH4F meets industry standards.
7.What is the process for return or replacement of SCBH4F?
All SCBH4F units undergo pre-shipment inspection (PSI). If there is an issue with SCBH4F, 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 SCBH4F part is unused and in its original packaging.
Return procedure for SCBH4F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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