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Semtech Corporation SCBA4
- Part No.:
- SCBA4
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-Square
- Datasheet:
-
SCBA4.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 6A
- Quantity:
- Payment:
- Shipping:
Inventory:3,527
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed to protect single 22V I/O or power lines against high-energy EOS events including ±30kV ESD (IEC 61000-4-2), 40A surge (8/20μs), and ±4kV EFT (IEC 61000-4-4); it delivers stable 27.5–28V clamping across 24–40A and −40°C to +125°C, enabling robust USB PD and load switch input protection.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include its constant-clamp FET architecture, 20mΩ dynamic resistance, 175pF junction capacitance at 22V, DFN 1.6×1.6mm 6-lead package, and compatibility with industrial surge standards (±1kV, RS=42Ω).
Technical Context
The TDS2211P uses a surge-rated FET as the 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 flat due to decreasing RDS(on) under increasing current.
It operates across −40°C to +125°C with guaranteed 27.5–28V clamping at both 24A and 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS=2Ω), and maintains <600nA reverse leakage at 22V and stable 175pF capacitance at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage the device safely blocks without leakage or conduction |
| Clamping Voltage | 27.5–28V at 40A - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surges |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity mandates |
| Dynamic Resistance | 20mΩ - enables low-voltage-drop shunting and minimal thermal stress during high-current transients |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with USB Type-C VBUS line without signal integrity degradation |
| Package | DFN 1.6×1.6×0.55mm, 6-lead - enables ultra-compact placement adjacent to connectors for minimal inductance |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound.
| 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 parasitic inductance |
| 4, 5, 6 | IN | Protected line input (VBUS or I/O); parallel connection of all three pins ensures uniform current sharing and full 40A rating |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp FET architecture | Clamping voltage stays within 27.5–28V from 24A to 40A and −40°C to +125°C - eliminates derating uncertainty in thermal designs |
| Low dynamic resistance | 20mΩ - reduces power dissipation (I²R) and junction temperature rise during multi-pulse surge events |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-surge exposure in industrial equipment |
| Ultra-low leakage | <600nA at 22V - prevents system standby current increase and battery drain in IoT devices |
| Compact DFN footprint | 1.6×1.6mm area - saves >50% board space vs. SO-8 or SOT-23 TVS alternatives while maintaining 6-pin current-sharing capability |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the 20–22V VBUS line in USB-C ports supporting up to 100W PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting EOS energy to ground before reaching the PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids overvoltage damage to sensitive 24V-tolerant PD ICs where standard TVS would exceed 35V at 125°C. | Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Primary front-end surge clamp on VIN rail, limiting transient voltage seen by the internal FET gate oxide and overvoltage protection circuitry. Use Value: Keeps clamping voltage below 28V - well under typical 30V+ absolute maximum ratings of industrial load switches, preventing catastrophic failure during 1kV surge tests. |
| IoT Device Power Rail Protection | Notebook/Tablet VBUS Line Protection |
Use Scenario: Securing 22V-capable power inputs in battery-powered edge sensors and wireless gateways subject to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device EOS protector on main power entry, replacing multi-component TVS+RC networks. Use Value: 175pF capacitance and <600nA leakage preserve battery life and avoid false wake-ups - critical for multi-year deployments in unattended locations. | Use Scenario: Hardening the VBUS line in ultraportable notebooks and tablets with USB-C charging, where PCB space and thermal margin are constrained. IC Role / Device Role / Timing Role: Compact, low-inductance transient suppressor mounted adjacent to the USB-C receptacle to minimize loop area. Use Value: DFN 1.6×1.6mm package fits tight layouts; constant clamping ensures consistent protection regardless of chassis temperature rise during sustained charging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 33.2V min clamping at 12.3A (8/20μs); no constant-clamp behavior; higher dynamic resistance (~0.5Ω) | Higher clamping voltage increases risk of PD controller damage at elevated temperatures; requires larger layout for same surge rating | Select only if cost sensitivity outweighs clamping stability and thermal performance requirements |
| TPD2E001DRYR | 2-channel 5.5V TVS array; 15pF per channel; rated for 4A (8/20μs); not rated for 22V operation or 40A surge | Designed for low-voltage data lines (USB 2.0, I²C), not power rails; insufficient voltage rating and surge capacity for VBUS | Not suitable as direct alternative; use only for auxiliary signal-line protection alongside TDS2211P |
Compared with SMAJ22A and TPD2E001DRYR, the TDS2211P uniquely combines 22V working voltage, 40A surge rating, and flat 27.5–28V clamping - making it the only option qualified for high-reliability 22V power rail protection in thermally demanding USB PD and industrial applications.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT device power rails requiring stable component supply, long-term lifecycle support, and compliance with IEC 61000-4-2/4-4/4-5 standards.
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 high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.
The TDS product line was developed to replace conventional TVS diodes in high-energy EOS applications, delivering stable clamping via FET-based architecture for USB PD, industrial power rails, and ruggedized embedded systems.
FAQ
What is the maximum continuous operating voltage for the TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks voltages up to 22V DC in normal operation without significant leakage or conduction. This makes it suitable for protecting 20V USB PD VBUS lines and other 22V-rated power rails. Exceeding 22V risks premature triggering or degradation. The TDS2211P is specifically rated and characterized for this voltage level per its datasheet Absolute Maximum Ratings and Electrical Characteristics tables.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P achieves constant clamping through its integrated surge-rated FET and precision trigger circuit: when an EOS event exceeds the trigger threshold, the FET turns on and its RDS(on) decreases with rising current, counteracting the I×R voltage drop. As a result, clamping stays at 27.5–28V from 24A to 40A (per IEC 61000-4-5). This behavior is confirmed in the TDS2211P datasheet Figure 3 and Electrical Characteristics table - a key differentiator from conventional TVS diodes whose clamping rises linearly with current.
Can the TDS2211P be used to protect high-speed data lines like USB SuperSpeed or DisplayPort?
No, the TDS2211P is not intended for high-speed data line protection. Its 175pF junction capacitance at 22V is optimized for power rail (VBUS) applications, not signal integrity-critical differential pairs. For USB SS, DP, or DM lines, Semtech recommends low-capacitance TVS devices such as RClamp3371ZC (<0.25pF). The TDS2211P datasheet explicitly positions it for "one I/O or power line" protection and illustrates its use on VBUS - not data lanes - in Figures 4 and 5.
What is the recommended PCB layout for optimal surge performance of the TDS2211P?
Per the TDS2211P datasheet Section "PCB Layout Recommendation", place the device as close as possible to the connector; connect all three IN pins (4,5,6) via a single short, wide trace; connect all three GND pins (1,2,3) to a solid ground plane using multiple vias; avoid thermal pads (energy dissipates internally). This minimizes parasitic inductance and ensures full 40A surge capability. Deviating from this layout - e.g., using only one GND pin - degrades performance and voids the rated specifications.
Is the TDS2211P compliant with RoHS and halogen-free standards?
Yes, the TDS2211P is Pb-free, halogen-free, and compliant with both RoHS and WEEE directives, as stated in the "Mechanical Characteristics" section of its official datasheet. The molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free. These compliance attributes are verified and documented by Semtech, and the part is supplied in tape-and-reel packaging (3,000 units per 7-inch reel) meeting industry-standard handling requirements.
SCBA4 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):
- 6 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- QC Terminal
- Supplier Device Package:
- -
SCBA4 FAQ
1.How can I place an order for SCBA4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SCBA4 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 SCBA4 reliable?
The price and inventory of SCBA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCBA4 is usually 5 days.
3.What payment methods are accepted for SCBA4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCBA4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCBA4?
SCBA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCBA4 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 SCBA4?
For technical support, including SCBA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCBA4 requirements.
6.How does Aetrix verify that SCBA4 is sourced from the original manufacturer or authorized distributors?
All SCBA4 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 SCBA4 meets industry standards.
7.What is the process for return or replacement of SCBA4?
All SCBA4 units undergo pre-shipment inspection (PSI). If there is an issue with SCBA4, 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 SCBA4 part is unused and in its original packaging.
Return procedure for SCBA4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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