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

Semtech Corporation SCAJ2

Name: SCAJ2
Brand: Semtech Corporation
SKU: SCAJ2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SCAJ2

Manufacturer:: Semtech Corporation

Category:: Bridge Rectifiers

Package:: 4-Square

Datasheet:: SCAJ2.pdf

Description:: BRIDGE RECT 1PHASE 200V 2A

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, 27.5–28V clamping voltage at 40A, and DFN 1.6×1.6mm 6-lead package-used in USB Type-C PD bus protection and industrial load switch input safeguarding.

For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance (20mΩ), junction capacitance (175pF), and validated performance in ±1kV IEC 61000-4-5 surge compliance for 22V systems.

Technical Context

The TDS2211P employs 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-enabling near-constant clamping voltage independent of peak pulse current magnitude. Its operation avoids the linear VC = VBR + IPP × RDYN behavior typical of conventional TVS diodes.

Clamping remains stable from −40°C to +125°C due to FET-based conduction with decreasing R_DS(on) under surge, delivering 27.5–28V at both 24A and 40A (1.2/50μs + 8/20μs combination waveform, R_S = 2Ω), and maintaining <0.6μA reverse leakage at 22V up to 125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - defines maximum continuous DC operating voltage on protected line without leakage or degradation
Clamping Voltage	27.5–28V at 40A - ensures downstream 22V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment interfaces
ESD Withstand	±30kV contact & air - exceeds IEC 61000-4-2 Level 4, enabling robust front-end protection for exposed connectors
Dynamic Resistance	20mΩ - enables flat clamping curve and minimal voltage rise under increasing surge current
Junction Capacitance	175pF at 22V, 1MHz - compatible with moderate-speed data/power lines (e.g., USB PD VBUS, load switch inputs)
Package	DFN 1.6×1.6×0.55mm, 6-lead - supports high-density PCB layouts with minimal board area vs. SOT-23 or SOIC alternatives

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
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., VBUS, load switch VIN); parallel connection of all three pins ensures full 40A rating and uniform current distribution

Key Features

Feature	Design Value
Constant-clamp architecture	FET-based shunt delivers ≤0.5V variation in clamping voltage from 24A to 40A, eliminating design margin uncertainty from current-dependent VC rise
Temperature-stable clamping	Clamping voltage varies <0.3V across −40°C to +125°C, enabling reliable protection in automotive and industrial ambient conditions
Low dynamic resistance	20mΩ measured between 1A–40A (8/20μs) ensures minimal IR drop and efficient energy diversion to ground
High-energy surge rating	1120W peak pulse power (8/20μs) supports repeated ±1kV (1.2/50μs + 8/20μs, R_S=42Ω) surges per IEC 61000-4-5
Low leakage at high temp	≤600nA at 22V and +125°C prevents system power loss or false triggering in thermally stressed environments

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 ports supporting Power Delivery negotiation and up to 100W delivery. IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp lightning-induced surges and ESD before reaching PD controller and power path FETs. Use Value: Maintains 27.5–28V clamping across full 40A surge and −40°C to +125°C, preventing overvoltage damage to 22V-rated PD ICs where conventional TVS would exceed 35V at high temperature.	Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes exposed to field-installed wiring transients. IC Role / Device Role / Timing Role: Primary EOS protection device placed upstream of load switch VIN pin to limit transient voltage below the internal FET's absolute maximum drain-source rating. Use Value: Enables use of compact 22V-rated load switches in harsh environments by holding clamping voltage well below 30V, avoiding gate oxide stress or avalanche failure during 40A surges.
IoT Device Power Rail Protection	Storage Device DC Power Interface
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors and gateway modules subject to ESD from human interaction and induced surges. IC Role / Device Role / Timing Role: Single-device solution for EOS suppression on always-on power inputs, replacing multi-component TVS+RC networks. Use Value: Reduces BOM count and PCB area while delivering ±30kV ESD immunity and stable 28V clamping-critical for compact, sealed enclosures with limited thermal dissipation.	Use Scenario: Protecting 22V DC input of NVMe SSD power modules or external storage enclosures connected via barrel jacks or terminal blocks. IC Role / Device Role / Timing Role: Front-end surge limiter on main DC input rail, coordinated with downstream e-fuse and OVP circuits to ensure end-to-end fault containment. Use Value: Survives repeated ±1kV IEC 61000-4-5 surges without degradation, preserving long-term reliability in data center and enterprise storage deployments.

USB Type-C Power Delivery Bus Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting the 20–22V VBUS line in USB Type-C ports supporting Power Delivery negotiation and up to 100W delivery.

IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp lightning-induced surges and ESD before reaching PD controller and power path FETs.

Use Value: Maintains 27.5–28V clamping across full 40A surge and −40°C to +125°C, preventing overvoltage damage to 22V-rated PD ICs where conventional TVS would exceed 35V at high temperature.

Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes exposed to field-installed wiring transients.

IC Role / Device Role / Timing Role: Primary EOS protection device placed upstream of load switch VIN pin to limit transient voltage below the internal FET's absolute maximum drain-source rating.

Use Value: Enables use of compact 22V-rated load switches in harsh environments by holding clamping voltage well below 30V, avoiding gate oxide stress or avalanche failure during 40A surges.

IoT Device Power Rail Protection

Storage Device DC Power Interface

Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors and gateway modules subject to ESD from human interaction and induced surges.

IC Role / Device Role / Timing Role: Single-device solution for EOS suppression on always-on power inputs, replacing multi-component TVS+RC networks.

Use Value: Reduces BOM count and PCB area while delivering ±30kV ESD immunity and stable 28V clamping-critical for compact, sealed enclosures with limited thermal dissipation.

Use Scenario: Protecting 22V DC input of NVMe SSD power modules or external storage enclosures connected via barrel jacks or terminal blocks.

IC Role / Device Role / Timing Role: Front-end surge limiter on main DC input rail, coordinated with downstream e-fuse and OVP circuits to ensure end-to-end fault containment.

Use Value: Survives repeated ±1kV IEC 61000-4-5 surges without degradation, preserving long-term reliability in data center and enterprise storage deployments.

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; 22V V_RWM, 35.2V V_C @ 14.3A; higher clamping voltage rises further with temperature and current	Limited to lower-energy surges; unsuitable where clamping must stay ≤28V at 40A or elevated temperature	Select only if cost sensitivity outweighs clamping stability requirements and surge energy is <20A
TPD2E001DRYR	Low-capacitance (1.5pF) dual-channel ESD protector; 22V V_RWM, 30V V_C @ 1A; rated for 4A max IPP, not 40A	Designed for high-speed signal lines (e.g., USB SS), not power/bus-level surge handling	Use only for data-line ESD co-protection-not as primary VBUS or load switch input suppressor

Compared with SMAJ22A and TPD2E001DRYR, the TDS2211P uniquely delivers 40A surge capability with sub-28V clamping across temperature-making it the only option among the three qualified for industrial-grade 22V bus protection where conventional TVS voltage drift and low IPP ratings are insufficient.

Availability

TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch input protection, and IoT device power rail safeguarding requiring stable component supply, full traceability, 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, sensing, and connectivity.

The TDS product line was developed to replace conventional TVS diodes in high-reliability 22V–36V power and interface protection, delivering stable clamping through FET-based transient diversion rather than junction-limited avalanche conduction.

FAQ

What is the maximum continuous operating voltage for TDS2211P?

The TDS2211P has a reverse stand-off voltage (V_RWM) of 22V, meaning it can continuously block up to 22V DC without significant leakage or conduction. This makes it suitable for protecting 22V-rated buses such as USB PD VBUS lines and industrial 24V nominal power rails where sustained voltage must remain within safe limits.

How does TDS2211P achieve constant clamping voltage across varying surge currents?

The TDS2211P uses a surge-rated FET as its main protection element, triggered by an internal precision circuit. When a transient exceeds the trigger threshold, the FET turns on with extremely low R_DS(on), causing clamping voltage to stabilize near the trigger circuit's breakdown voltage-resulting in ≤0.5V variation between 24A and 40A, unlike conventional TVS diodes whose clamping rises linearly with current.

Can TDS2211P be used in place of a standard TVS diode like SMAJ22A?

The TDS2211P is not a drop-in replacement for SMAJ22A due to different pinout (6-pin DFN vs. DO-214AC), higher surge rating (40A vs. 14.3A), and superior clamping stability-but it serves the same functional role of 22V line protection. System redesign is required for layout and grounding, but TDS2211P enables tighter voltage margins and higher reliability in demanding applications.

What is the recommended PCB layout for optimal performance of TDS2211P?

Place TDS2211P as close as possible to the protected connector. Connect all three IN pins (4, 5, 6) in parallel with a single short trace, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid thermal pads-energy is dissipated internally, and minimizing trace inductance is critical for fast ESD response and full 40A surge capability.

Does TDS2211P meet IEC 61000-4-5 surge immunity standards?

Yes, the TDS2211P is rated for ±1kV (1.2/50μs voltage + 8/20μs current, R_S = 42Ω) per IEC 61000-4-5, and its 40A (8/20μs) capability exceeds Level 4 requirements. It also meets IEC 61000-4-2 (±30kV contact/air) and IEC 61000-4-4 (±4kV EFT), making it suitable for industrial and commercial equipment requiring full EMC compliance.

SCAJ2 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):: 200 V

Current - Average Rectified (Io):: 2 A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

Current - Reverse Leakage @ Vr:: 2 µA @ 200 V

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Chassis Mount

Supplier Device Package:: -

SCAJ2 FAQ

1.How can I place an order for SCAJ2 through Aetrix?

Please submit a Request for Quotation (RFQ) for SCAJ2 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 SCAJ2 reliable?

The price and inventory of SCAJ2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCAJ2 is usually 5 days.

3.What payment methods are accepted for SCAJ2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCAJ2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SCAJ2?

SCAJ2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SCAJ2 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 SCAJ2?

For technical support, including SCAJ2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCAJ2 requirements.

6.How does Aetrix verify that SCAJ2 is sourced from the original manufacturer or authorized distributors?

All SCAJ2 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 SCAJ2 meets industry standards.

7.What is the process for return or replacement of SCAJ2?

All SCAJ2 units undergo pre-shipment inspection (PSI). If there is an issue with SCAJ2, 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 SCAJ2 part is unused and in its original packaging.

Return procedure for SCAJ2:

1.Submit a request within 90 days.

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

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