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

Semtech Corporation SCBH4

Name: SCBH4
Brand: Semtech Corporation
SKU: SCBH4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SCBH4

Manufacturer:: Semtech Corporation

Category:: Bridge Rectifiers

Package:: 4-Square

Datasheet:: SCBH4.pdf

Description:: BRIDGE RECT 1PHASE 400V 4A

Quantity:: RFQ Add To RFQ list

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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 - deployed in USB Type-C PD bus protection and load switch input safeguarding.

For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal and layout performance, 175pF junction capacitance at 22V, and compatibility with industrial-grade operating temperatures from –40°C to +125°C.

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 path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing R_DS(on) under increasing current.

It delivers 1120W peak pulse power (8/20μs), maintains ≤600nA reverse leakage at 22V, and achieves 20mΩ dynamic resistance measured between 1A and 40A - enabling robust protection for 22V systems without thermal runaway or voltage drift over temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - matches nominal USB PD bus and industrial 24V rail derating requirements
Clamping Voltage	27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - stays below 29V across full temp and current range
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment
ESD Withstand	±30kV contact & air per IEC 61000-4-2 - exceeds automotive and portable device ESD requirements
Junction Capacitance	175pF at 22V, 1MHz - low enough for USB PD VBUS line without signal integrity impact
Dynamic Resistance	20mΩ - ensures minimal voltage rise during surge conduction, critical for downstream FET protection
Operating Temp	–40°C to +125°C - supports extended-range industrial and automotive under-hood environments

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 - all three pins must be connected to maximize surge current dissipation and minimize parasitic inductance
4, 5, 6	IN	Protected line input - connects directly to VBUS or power/data line; all three pins conduct surge current in parallel

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage varies <0.5V from 24A to 40A - eliminates need for over-spec'ed IPP margining in USB PD designs
FET-based shunt topology	R_DS(on) drops under surge - avoids thermal runaway and enables higher energy absorption than silicon avalanche TVS
Low dynamic resistance	20mΩ - reduces IR drop during surge, preserving voltage headroom for protected ICs like HS2950P load switches
High-temp stable clamping	Clamps at ~27.6V at 125°C - unlike TVS diodes whose VC rises >10V over same range
Compact DFN footprint	1.6mm × 1.6mm - saves >60% board area vs. SO-8 or SOT-23 alternatives while maintaining 6-pin current sharing

Applications

USB Type-C Power Delivery Bus Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting 20–22V USB PD VBUS lines against lightning-induced surges and connector ESD events in notebooks and docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp transients before reaching PD controller and load switch. Use Value: Maintains clamping at ≤28V across –40°C to +125°C - prevents damage to 30V-rated PD controllers (e.g., STUSB4500) without derating.	Use Scenario: Safeguarding input of industrial load switches (e.g., HS2950P) against EOS in remote meters, robotics, and IoT gateways. IC Role / Device Role / Timing Role: Primary front-end surge protector that limits voltage seen by internal FET gate oxide during 1kV/42Ω surges. Use Value: Keeps clamping voltage below 29V - avoids gate-source overvoltage failure in 30V-rated load switches during repetitive surge stress.
IoT Edge Device Power Rail Protection	Storage Device 22V Backup Power Line
Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and wireless gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Solid-state EOS protector replacing Zener+TVS stacks to reduce BOM count and improve reliability. Use Value: Delivers 40A surge handling in 1.6mm² footprint - enables compact, sealed enclosure designs without thermal pad or heatsink.	Use Scenario: Protecting 22V backup power inputs in NVMe SSDs and enterprise storage controllers during hot-swap and system-level surge events. IC Role / Device Role / Timing Role: High-energy clamping device placed upstream of DC-DC converters and PMICs on 22V standby rails. Use Value: 1120W peak power rating and 20mΩ R_DYN prevent voltage overshoot beyond 29V - ensuring safe operation of 30V-input buck regulators.

USB Type-C Power Delivery Bus Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting 20–22V USB PD VBUS lines against lightning-induced surges and connector ESD events in notebooks and docking stations.

IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp transients before reaching PD controller and load switch.

Use Value: Maintains clamping at ≤28V across –40°C to +125°C - prevents damage to 30V-rated PD controllers (e.g., STUSB4500) without derating.

Use Scenario: Safeguarding input of industrial load switches (e.g., HS2950P) against EOS in remote meters, robotics, and IoT gateways.

IC Role / Device Role / Timing Role: Primary front-end surge protector that limits voltage seen by internal FET gate oxide during 1kV/42Ω surges.

Use Value: Keeps clamping voltage below 29V - avoids gate-source overvoltage failure in 30V-rated load switches during repetitive surge stress.

IoT Edge Device Power Rail Protection

Storage Device 22V Backup Power Line

Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and wireless gateways exposed to field ESD and induced surges.

IC Role / Device Role / Timing Role: Solid-state EOS protector replacing Zener+TVS stacks to reduce BOM count and improve reliability.

Use Value: Delivers 40A surge handling in 1.6mm² footprint - enables compact, sealed enclosure designs without thermal pad or heatsink.

Use Scenario: Protecting 22V backup power inputs in NVMe SSDs and enterprise storage controllers during hot-swap and system-level surge events.

IC Role / Device Role / Timing Role: High-energy clamping device placed upstream of DC-DC converters and PMICs on 22V standby rails.

Use Value: 1120W peak power rating and 20mΩ R_DYN prevent voltage overshoot beyond 29V - ensuring safe operation of 30V-input buck regulators.

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; 38V clamping at 24A (125°C); 1.5Ω dynamic resistance; no FET-based regulation	Higher clamping voltage drift with temperature and current - less suitable for tight-margin 30V ICs	Lower cost but requires larger layout margin and thermal derating; best for non-critical 22V rails with ample voltage headroom
SP1003-220K	Bi-directional polymer ESD suppressor; 22V working voltage; 30A (8/20μs); 35V clamping; slower response than TDS	Limited to ESD-only (IEC 61000-4-2); not rated for IEC 61000-4-5 surge; higher clamping voltage	Valid for handheld ESD-only zones (e.g., CC lines), but cannot replace TDS2211P for VBUS or load switch protection

Compared with SMAJ22A and SP1003-220K, the TDS2211P uniquely combines low, temperature-stable clamping (≤28V), 40A surge rating, and FET-based current-sharing - making it the only option qualified for high-reliability 22V power rail protection where voltage margin is constrained and thermal stability is mandatory.

Availability

TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge device power rails requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

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 ICs for power management, protection, sensing, and connectivity.

The TDS2211P belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace conventional TVS diodes in high-energy EOS applications where clamping voltage stability and temperature independence are critical.

FAQ

What is the primary protection function of the TDS2211P?

The TDS2211P functions as a transient diverting suppressor that actively shunts high-energy EOS events - including IEC 61000-4-5 surges up to 40A (8/20μs) and IEC 61000-4-2 ESD up to ±30kV - away from sensitive downstream components. Unlike passive TVS diodes, the TDS2211P uses a triggered FET to maintain a stable clamping voltage near 27.5–28V across its full operating range.

Does the TDS2211P require external bias or control signals to operate?

No, the TDS2211P operates autonomously without external bias, enable signals, or configuration. Its internal precision trigger circuit activates the shunt FET when transient voltage exceeds the breakdown threshold (~25–27.9V), and the device returns to high-impedance standby mode once the event subsides. The TDS2211P draws only ≤600nA leakage at 22V in normal operation.

Can the TDS2211P be used on bidirectional data lines such as USB DP/DM?

No, the TDS2211P is designed exclusively for unidirectional protection of power or single-ended I/O lines (e.g., VBUS, load switch inputs). Its pinout and internal architecture support only IN-to-GND conduction. For bidirectional high-speed data lines like USB DP/DM, Semtech recommends low-capacitance TVS devices such as RClamp3371ZC - not the TDS2211P.

How does the TDS2211P compare to standard TVS diodes in terms of clamping voltage stability?

The TDS2211P clamps at 27.5–28V across its full 1A–40A surge range and –40°C to +125°C temperature range, whereas standard TVS diodes exhibit linear VC = VBR + IPP × RDYN behavior - causing clamping to rise >10V at high current or temperature. This makes the TDS2211P uniquely suited for protecting 30V-rated ICs where voltage margin is tight.

What PCB layout practices are recommended for optimal performance of the TDS2211P?

Place the TDS2211P as close as possible to the protected connector; connect all three IN pins (4,5,6) via a single low-inductance trace; tie all three GND pins (1,2,3) directly to a solid ground plane using multiple vias; avoid thermal pads - energy is dissipated internally. These practices ensure full 40A surge capability and minimize voltage overshoot during fast-rising ESD events.

SCBH4 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 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:: -

SCBH4 FAQ

1.How can I place an order for SCBH4 through Aetrix?

Please submit a Request for Quotation (RFQ) for SCBH4 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 SCBH4 reliable?

The price and inventory of SCBH4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCBH4 is usually 5 days.

3.What payment methods are accepted for SCBH4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCBH4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SCBH4?

SCBH4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SCBH4 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 SCBH4?

For technical support, including SCBH4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCBH4 requirements.

6.How does Aetrix verify that SCBH4 is sourced from the original manufacturer or authorized distributors?

All SCBH4 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 SCBH4 meets industry standards.

7.What is the process for return or replacement of SCBH4?

All SCBH4 units undergo pre-shipment inspection (PSI). If there is an issue with SCBH4, 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 SCBH4 part is unused and in its original packaging.

Return procedure for SCBH4:

1.Submit a request within 90 days.

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

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