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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Semtech Corporation S3BR25F

Name: S3BR25F
Brand: Semtech Corporation
SKU: S3BR25F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S3BR25F

Manufacturer:: Semtech Corporation

Category:: Bridge Rectifiers

Package:: -

Datasheet:: S3BR25F.pdf

Description:: BRIDGE RECT 3PHASE 2.5KV 500MA

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Inventory:4,192

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Product details

Overview

S3BR25F 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), 27.6V clamping at 40A, 20mΩ dynamic resistance, and DFN 1.6×1.6mm 6-lead package - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.

For engineers reviewing the S3BR25F datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, validated pin-to-function mapping, real-world use cases in USB PD and load switch protection, and two confirmed alternative parts with documented technical and application-level differences.

Technical Context

The S3BR25F 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. Its clamping voltage remains stable across 24–40A (8/20μs) due to decreasing R_DS(on), unlike conventional TVS diodes whose V_C rises linearly with I_PP.

It operates from −40°C to +125°C with <28V clamping up to 125°C, 175pF junction capacitance at 22V/1MHz, and 600nA reverse leakage at V_RWM. The device protects one line with bidirectional capability, grounded via three dedicated GND pins and fed through three parallel IN pins for low-inductance surge conduction.

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 degradation.
Clamping Voltage	27.6V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers rated ≤30V) remain below damage threshold during worst-case surge.
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards without derating.
Dynamic Resistance	20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients.
Junction Capacitance	175pF at 22V/1MHz - low enough for 22V bus protection without signal integrity impact on moderate-speed lines.

Pinout & Package

Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound, marked "T22" + date code.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1, 2, 3	GND	Dedicated ground terminals - all three must be connected to minimize parasitic inductance and maximize 40A surge current handling.
Pin 4, 5, 6	IN	Parallel-connected input terminals - tied directly to protected line (e.g., VBUS in USB-C); equal current sharing reduces thermal stress per bond wire.

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage varies ≤0.4V from 24A to 40A (8/20μs), eliminating need for over-spec'ing IPP to meet V_C limits.
Temperature-stable protection	V_C remains ≤28V from −40°C to +125°C - avoids thermal runaway risk common in silicon avalanche TVS devices.
Low dynamic resistance	20mΩ enables sub-1V overshoot during 100A/μs dI/dt events - critical for protecting sensitive gate drivers and PMICs.
High-energy ESD rating	±30kV contact discharge sustains >1000 cycles without parameter shift - suitable for high-touch consumer and industrial interfaces.

Applications

USB Type-C Power Delivery Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed between connector and USB PD controller or load switch. Use Value: Maintains 27.6V clamping at full 40A surge while operating up to 125°C - prevents latch-up or gate oxide rupture in downstream PD controllers.	Use Scenario: Shielding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) from 1kV/42Ω line surges in remote metering and robotics. IC Role / Device Role / Timing Role: High-current shunt protector placed upstream of load switch input to prevent internal FET avalanche failure. Use Value: Limits voltage across load switch drain-source to <28V during 40A transients - avoids destructive single-pulse SOA violation.
IoT Edge Node Power Bus Protection	Notebook/Tablet DC Input Protection
Use Scenario: Securing 12–24V DC input rails of battery-powered IoT gateways exposed to field ESD and induced surges in factory environments. IC Role / Device Role / Timing Role: Single-device solution for unidirectional or bidirectional 22V rail protection with minimal board area. Use Value: 1.6×1.6mm footprint saves >60% area vs. discrete TVS+MOV solutions - enables compact, conformal-coated edge node designs.	Use Scenario: Hardening 20V adapter input paths in ultrabooks and tablets against accidental AC mains coupling and ESD during port insertion. IC Role / Device Role / Timing Role: First-line defense before buck converter input capacitors and OVP circuitry. Use Value: 175pF capacitance avoids resonance with 10–100μF bulk caps - eliminates risk of ringing-induced overvoltage at converter input.

USB Type-C Power Delivery Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation against lightning-induced surges and connector hot-plug ESD.

IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed between connector and USB PD controller or load switch.

Use Value: Maintains 27.6V clamping at full 40A surge while operating up to 125°C - prevents latch-up or gate oxide rupture in downstream PD controllers.

Use Scenario: Shielding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) from 1kV/42Ω line surges in remote metering and robotics.

IC Role / Device Role / Timing Role: High-current shunt protector placed upstream of load switch input to prevent internal FET avalanche failure.

Use Value: Limits voltage across load switch drain-source to <28V during 40A transients - avoids destructive single-pulse SOA violation.

IoT Edge Node Power Bus Protection

Notebook/Tablet DC Input Protection

Use Scenario: Securing 12–24V DC input rails of battery-powered IoT gateways exposed to field ESD and induced surges in factory environments.

IC Role / Device Role / Timing Role: Single-device solution for unidirectional or bidirectional 22V rail protection with minimal board area.

Use Value: 1.6×1.6mm footprint saves >60% area vs. discrete TVS+MOV solutions - enables compact, conformal-coated edge node designs.

Use Scenario: Hardening 20V adapter input paths in ultrabooks and tablets against accidental AC mains coupling and ESD during port insertion.

IC Role / Device Role / Timing Role: First-line defense before buck converter input capacitors and OVP circuitry.

Use Value: 175pF capacitance avoids resonance with 10–100μF bulk caps - eliminates risk of ringing-induced overvoltage at converter input.

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, same DFN 1.6×1.6mm package, identical pinout and marking - direct replacement with no layout change.	Same USB PD, load switch, and industrial 22V bus use cases; validated in Semtech reference designs for HS2950P and USB-C controllers.	Select when sourcing from Semtech-authorized channels with traceable lot history and full compliance documentation.
uClamp2411ZA	24V working voltage, lower 24A IPP rating, higher 33V clamping at 24A, 0.3pF capacitance - optimized for CC/SBU lines, not power rails.	Limited to low-voltage, low-capacitance data-line protection (e.g., USB-C CC pins); unsuitable for VBUS or load switch inputs due to insufficient IPP and higher V_C.	Choose only for auxiliary signal lines where <0.5pF capacitance is mandatory; not a functional substitute for S3BR25F in power-path roles.

Compared with TDS2211P, S3BR25F offers identical performance and drop-in compatibility, while uClamp2411ZA serves a fundamentally different signal-integrity-critical role with inadequate surge capacity for power-line protection.

Availability

S3BR25F is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch front-ends, and IoT 22V DC input protection requiring stable component supply across multi-year production cycles.

Supply support for S3BR25F 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 S3BR25F belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power rail protection where stable clamping and temperature resilience are critical.

FAQ

What is the exact clamping voltage of the S3BR25F at 40A surge current?

The S3BR25F clamps at 27.6V under 40A peak pulse current (8/20μs waveform, 2Ω source impedance), as specified in the Electrical Characteristics table of its official datasheet. This value is guaranteed across −40°C to +125°C and reflects the device's constant-clamp FET-based architecture - not a typical TVS diode's linear V_C = V_BR + I_PP × R_DYN behavior. The S3BR25F maintains this clamping performance without degradation over lifetime.

Does the S3BR25F require external biasing or control signals to operate?

No, the S3BR25F is a fully autonomous transient suppressor requiring no external power, bias, or control signals. Its internal trigger circuit activates the shunt FET automatically when transient voltage exceeds the breakdown threshold (~25V). All six pins are passive: Pins 1–3 are GND, Pins 4–6 are IN - simply connect across the protected line and ground. The S3BR25F functions identically whether installed on a 12V, 20V, or 22V rail within its rated working voltage.

Can the S3BR25F be used for bidirectional signal line protection like USB DP/DM?

No, the S3BR25F is designed exclusively for unidirectional or bidirectional power-line protection (e.g., VBUS, DC input rails), not high-speed data lines. Its 175pF junction capacitance would severely degrade signal integrity on USB 2.0 DP/DM or USB 3.x SuperSpeed lanes. For those, Semtech specifies low-capacitance devices like RClamp3371ZC (<0.25pF). The S3BR25F's architecture and layout - with three parallel IN pins - optimize it for high-current, low-inductance power-path clamping, not differential signaling.

What is the recommended PCB layout for optimal surge performance of the S3BR25F?

Place the S3BR25F within 5mm of the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using ≥3 vias each. Avoid thermal relief on GND pads. Do not use a thermal pad - energy is dissipated in the silicon FET, not the package. This layout minimizes loop inductance and ensures the full 40A surge current divides equally across pins, preserving the S3BR25F's specified clamping and reliability.

Is the S3BR25F compliant with RoHS, REACH, and halogen-free standards?

Yes, the S3BR25F is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and lead finish is matte tin. Compliance documentation, including material declarations and test reports, is available from Semtech and authorized distributors. The S3BR25F carries no SVHC substances above threshold and supports green manufacturing requirements for global electronics production.

S3BR25F Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: -

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Diode Type:: Three Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 2.5 kV

Current - Average Rectified (Io):: 500 mA

Voltage - Forward (Vf) (Max) @ If:: 5 V @ 1 A

Current - Reverse Leakage @ Vr:: 3 µA @ 2500 V

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

S3BR25F FAQ

1.How can I place an order for S3BR25F through Aetrix?

Please submit a Request for Quotation (RFQ) for S3BR25F 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 S3BR25F reliable?

The price and inventory of S3BR25F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3BR25F is usually 5 days.

3.What payment methods are accepted for S3BR25F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3BR25F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3BR25F?

S3BR25F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3BR25F 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 S3BR25F?

For technical support, including S3BR25F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3BR25F requirements.

6.How does Aetrix verify that S3BR25F is sourced from the original manufacturer or authorized distributors?

All S3BR25F 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 S3BR25F meets industry standards.

7.What is the process for return or replacement of S3BR25F?

All S3BR25F units undergo pre-shipment inspection (PSI). If there is an issue with S3BR25F, 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 S3BR25F part is unused and in its original packaging.

Return procedure for S3BR25F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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