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Semtech Corporation SBMC4
- Part No.:
- SBMC4
- Manufacturer:
- Semtech Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP
- Datasheet:
-
SBMC4.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 1.5A
- Quantity:
- Payment:
- Shipping:
Inventory:9,091
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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, 27.5–28V clamping voltage at 40A, and DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB Type-C PD bus protection and industrial load switch input stages.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature (−40°C to +125°C), dynamic resistance ≤20mΩ, junction capacitance of 175pF at 22V, and verified compliance with IEC 61000-4-4 (±4kV EFT) and IEC 61000-4-5 (±1kV unsymmetrical surge).
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt FET when transient voltage exceeds breakdown threshold - enabling near-constant clamping voltage independent of peak pulse current magnitude. Unlike conventional TVS diodes, its clamping behavior relies on low RDS(on) rather than fixed dynamic resistance.
It operates over −40°C to +125°C ambient, maintains stable 27.5–28V clamping from 24A to 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), and delivers 1120W peak pulse power. Its 175pF junction capacitance at 22V and 1MHz makes it suitable for moderate-speed power/data line protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 3/4 industrial surge requirements. |
| ESD Withstand | ±30kV contact & air per IEC 61000-4-2 - exceeds standard ESD immunity requirements for handheld and portable equipment interfaces. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping curve and minimizes voltage overshoot under varying surge magnitudes. |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with USB Type-C VBUS and load switch inputs where <500pF is acceptable. |
| Operating Temperature | −40°C to +125°C - supports deployment in industrial, automotive accessory, and ruggedized IoT environments. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, marked "T22" + date code.
| 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 | Protected line input (e.g., USB PD VBUS, load switch VIN); all three pins are internally tied and must be shorted externally for full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. IPP | 27.5–28V across full 24–40A range - eliminates need for derating at high temperatures or currents unlike TVS diodes. |
| FET-based shunt architecture | Surge-rated MOSFET + precision trigger circuit - achieves <0.1Ω effective RDS(on) during clamping, minimizing power dissipation in silicon junction. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz bursts) - protects against repetitive fast transients in industrial control and motor drive environments. |
| Low thermal drift | Clamping voltage stable across −40°C to +125°C - enables reliable protection in uncontrolled thermal environments without margin expansion. |
| Board space optimization | 1.6×1.6mm footprint - reduces PCB area by >50% vs. comparable discrete TVS + RC snubber solutions for 22V bus protection. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the 20–22V VBUS line in USB Type-C receptacles supporting Power Delivery up to 100W. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and USB PD controller or load switch input. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to PD controllers whose absolute max rating is typically 28–30V. |
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: Front-end transient diverter that clamps before energy reaches the load switch's internal FET gate oxide. Use Value: Limits voltage stress on load switch drain-source terminals to ≤28V during 40A surges - avoids catastrophic failure and extends system MTBF. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways subjected to ESD during field servicing or connector mating. IC Role / Device Role / Timing Role: Single-component, low-capacitance transient suppressor on main DC input rail prior to DC-DC conversion. Use Value: Delivers ±30kV ESD robustness without adding series impedance or degrading startup timing - critical for always-on edge nodes. |
Use Scenario: Protecting 22V supercapacitor or LiFePO4 backup supplies in enterprise SSDs and NAS enclosures against AC-line coupled surges. IC Role / Device Role / Timing Role: Standby-mode surge clamp on backup supply input, active only during transient events. Use Value: 130–600nA reverse leakage at 22V ensures minimal standby current drain - preserves backup runtime over years of operation. |
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 | 30V working voltage, 30A (8/20μs), 33V clamping at 30A, SOD-323 package, 15pF capacitance | Better suited for lower-voltage, high-speed data lines (e.g., USB 2.0 D+/D−) due to ultra-low capacitance; insufficient clamping headroom for 22V PD bus | Select SP1003-02HTG only for sub-20V signal lines requiring <20pF; not recommended for VBUS protection where 27–28V clamping is mandatory. |
| SMAJ22A | 22V standoff, 32.2V min breakdown, 35.5V max clamping at 12.5A (8/20μs), DO-214AC package, 350pF | Higher clamping voltage (+7.5V above TDS2211P), limited to 12.5A, larger footprint - fails to meet 40A IEC 61000-4-5 requirement | Use SMAJ22A only in cost-sensitive, non-industrial designs with <15A surge exposure; cannot replace TDS2211P in USB PD or load switch applications. |
Compared with SP1003-02HTG and SMAJ22A, the TDS2211P uniquely delivers 40A surge capability with 27.5–28V clamping in a 1.6mm² DFN - enabling compact, thermally stable protection for 22V power rails where competing devices either lack current rating, exceed clamping limits, or introduce excessive capacitance.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, IoT edge node power rails, and storage device backup supplies requiring stable component supply and long-term lifecycle support.
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, and signal integrity.
The TDS family was engineered specifically for high-energy EOS protection in modern power interfaces - targeting USB PD, industrial power rails, and load switch inputs where traditional TVS diodes fail to maintain safe clamping margins across temperature and current.
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 without significant leakage or conduction. This makes it suitable for protecting 20–22V power rails such as USB Power Delivery VBUS and industrial 24V nominal systems operating at reduced voltage levels. Exceeding 22V risks premature triggering or degradation.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P achieves constant clamping via a surge-rated FET activated by a precision trigger circuit - unlike TVS diodes whose clamping rises linearly with current (VC = VBR + IPP × RDYN). When triggered, the FET enters a low-RDS(on) state (<0.1Ω), causing clamping voltage to stabilize near the trigger circuit's breakdown voltage. This results in 27.5–28V clamping from 24A to 40A, as confirmed in the TDS2211P datasheet Figure 3.
Can the TDS2211P be used to protect high-speed data lines like USB SuperSpeed differential pairs?
No - the TDS2211P is not intended for high-speed data line protection due to its 175pF junction capacitance at 22V, which would severely degrade signal integrity on USB 3.x or PCIe lanes. For those applications, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). The TDS2211P is optimized for power/data line inputs such as VBUS, CC, or load switch VIN where capacitance tolerance is higher.
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 shorted together with a low-inductance 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 as close as possible to the connector entry point to minimize trace inductance - per Semtech's layout guidelines in the TDS2211P datasheet Figure 7. Avoid thermal pads; energy is dissipated in the silicon, not the package.
Does the TDS2211P require external biasing or control signals to operate?
No - the TDS2211P is a fully passive, self-triggering device. It contains an integrated precision trigger circuit and drive circuit that automatically activate the internal shunt FET when transient voltage exceeds the breakdown threshold. No external power, enable signals, or configuration are needed - the TDS2211P functions immediately upon installation in-circuit as a two-terminal protection device.
SBMC4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 4-SIP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 400 V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
SBMC4 FAQ
1.How can I place an order for SBMC4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBMC4 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 SBMC4 reliable?
The price and inventory of SBMC4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBMC4 is usually 5 days.
3.What payment methods are accepted for SBMC4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBMC4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBMC4?
SBMC4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBMC4 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 SBMC4?
For technical support, including SBMC4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBMC4 requirements.
6.How does Aetrix verify that SBMC4 is sourced from the original manufacturer or authorized distributors?
All SBMC4 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 SBMC4 meets industry standards.
7.What is the process for return or replacement of SBMC4?
All SBMC4 units undergo pre-shipment inspection (PSI). If there is an issue with SBMC4, 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 SBMC4 part is unused and in its original packaging.
Return procedure for SBMC4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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