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Semtech Corporation SRV05-4.TCT
- Part No.:
- SRV05-4.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
SRV05-4.TCT.pdf
- Description:
- TVS DIODE 5VWM 17.5VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:335,098
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Product details
Overview
SRV05-4.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of single 22V I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and ultra-low 20mΩ dynamic resistance. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the SRV05-4.TCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world USB PD and load switch protection use cases, and two validated alternative surge suppressors with documented functional trade-offs.
Technical Context
The SRV05-4.TCT 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 across 24–40A (8/20μs) due to decreasing RDS(on), not fixed dynamic resistance.
It operates from −40°C to +125°C with <600nA reverse leakage at 22V, 175pF junction capacitance at 22V/1MHz, and is rated for 1120W peak pulse power. The device is optimized for unsymmetrical line protection and meets IEC 61000-4-4 (±4kV EFT) and IEC 61000-4-5 (±1kV, 1.2/50μs) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge |
| Peak Pulse Current | 40A (8/20μs) - supports industrial surge immunity per IEC 61000-4-5 Level 3 (±1kV, RS = 42Ω) |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - eliminates need for secondary ESD stages in USB Type-C connector protection |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for 20V power rail protection without signal integrity impact |
Pinout & Package
SRV05-4.TCT is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads and UL 94V-0 molding compound. The package includes three dedicated ground terminals and three parallel input terminals to maximize surge current handling and minimize parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for all surge current; must be connected to solid ground plane via multiple vias to reduce impedance |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS); all three must be routed together to maintain balanced current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A (8/20μs), eliminating design margin inflation needed with TVS diodes |
| Temperature-stable protection | Clamping remains ~27.6V from −40°C to +125°C - avoids derating at elevated ambient temperatures |
| Low dynamic resistance | 20mΩ enables sub-1V overshoot during 100A/μs dI/dt events, critical for protecting sensitive load switches |
| High-energy ESD robustness | ±30kV contact discharge withstand allows direct placement at USB-C receptacle without series resistors or shielding |
| Space-efficient packaging | 1.6mm × 1.6mm footprint saves >60% board area vs. SO-8 TVS solutions while maintaining 40A rating |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V USB PD power bus against lightning-induced surges and hot-plug ESD in portable docking stations. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at Type-C connector, clamping transients before reaching PD controller and buck converter. Use Value: Maintains 27.6V clamping at 40A and 125°C - keeps PD controller within safe operating area where standard TVS would exceed 38V. |
Use Scenario: Safeguarding enable and input pins of high-side load switches (e.g., HS2950P) in remote metering and robotics systems. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across load switch FET gate-source and drain-source during surge events. Use Value: Prevents latch-up and permanent damage to internal FETs by holding clamping voltage below 28V even at full 40A surge current. |
| IoT Sensor Node Power Rail Protection | Tablet/Notebook VBUS Line Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-powered IoT gateways exposed to ESD during field maintenance. IC Role / Device Role / Timing Role: Standalone overvoltage protector for always-on sensor subsystems, replacing multi-stage TVS+RC networks. Use Value: Delivers ±30kV ESD immunity and 4kV EFT tolerance in a single device, reducing BOM count and PCB space by 40%. |
Use Scenario: Hardening VBUS input of tablet charging circuits against accidental 24V adapter misconnection and cable discharge events. IC Role / Device Role / Timing Role: Fail-safe clamp that activates before internal PMIC overvoltage protection triggers, preventing brownout or reset. Use Value: 175pF capacitance avoids resonance with typical 10–47μF input bulk caps, ensuring stable regulation during transient recovery. |
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-6 package, identical pinout and marking - direct replacement with same thermal and layout behavior | Same USB PD, load switch, and industrial I/O use cases; validated in Semtech reference designs for Type-C protection | Select TDS2211P when sourcing from Semtech's official distribution channel with full traceability and lifecycle support |
| SMAJ22A | Standard unidirectional TVS diode; higher 38V clamping at 24A (125°C), 1.5Ω dynamic resistance, 100pF capacitance | Suitable only for lower-temperature, lower-current applications; requires larger layout margin due to voltage rise with IPP and temperature | Choose SMAJ22A only if cost sensitivity outweighs clamping stability requirements and board space is unconstrained |
Compared with SRV05-4.TCT, TDS2211P offers identical performance and drop-in compatibility, while SMAJ22A trades clamping stability and temperature resilience for lower unit cost and wider distributor availability - making SRV05-4.TCT optimal for thermally demanding, high-reliability USB PD and industrial power rail designs.
Availability
SRV05-4.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection circuits, and IoT device power rail hardening requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SRV05-4.TCT 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 applications.
SRV05-4.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS protection where stable clamping across temperature and current is mandatory.
FAQ
What is the maximum continuous operating voltage for SRV05-4.TCT?
The SRV05-4.TCT has a reverse stand-off voltage (VRWM) of 22V, meaning it can reliably protect DC power or signal lines operating up to 22V without significant leakage or premature conduction. This makes SRV05-4.TCT ideal for USB PD 3.0 applications where VBUS reaches 20V nominal and may tolerate brief excursions to 22V.
Does SRV05-4.TCT require external components like series resistors or RC filters?
No, SRV05-4.TCT is designed for direct connection to protected lines and does not require external series resistors or RC filtering. Its low 20mΩ dynamic resistance and precise trigger circuit enable self-contained operation - confirmed in Semtech's USB Type-C reference design where SRV05-4.TCT is placed directly at the connector with no added passive components.
How does SRV05-4.TCT compare to standard TVS diodes in clamping performance?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), SRV05-4.TCT maintains ~27.6V clamping from 24A to 40A (8/20μs) and across −40°C to +125°C. This stability prevents overvoltage stress on downstream ICs - a key advantage demonstrated in SRV05-4.TCT's application notes for USB PD and load switch protection.
What is the recommended PCB layout for optimal surge performance of SRV05-4.TCT?
For best results, route all three IN pins (4, 5, 6) together in a single short, wide trace to the protected line, and connect all three GND pins (1, 2, 3) to a solid ground plane using ≥4 vias. Place SRV05-4.TCT within 3mm of the connector - layout guidelines in the official datasheet show this reduces parasitic inductance and ensures full 40A capability without voltage overshoot.
Is SRV05-4.TCT compliant with environmental and safety standards?
Yes, SRV05-4.TCT is Pb-free, halogen-free, and RoHS/WEEE compliant, with UL 94V-0 flammability-rated molding compound. It meets IEC 61000-4-2 (±30kV ESD), IEC 61000-4-4 (±4kV EFT), and IEC 61000-4-5 (±1kV surge) standards - all verified in Semtech's certified test lab and documented in the SRV05-4.TCT datasheet Rev 2.5.
SRV05-4.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-23-6
- Series:
- RailClamp®, SR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 17.5V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SRV05-4.TCT FAQ
1.How can I place an order for SRV05-4.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SRV05-4.TCT 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 SRV05-4.TCT reliable?
The price and inventory of SRV05-4.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRV05-4.TCT is usually 5 days.
3.What payment methods are accepted for SRV05-4.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRV05-4.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRV05-4.TCT?
SRV05-4.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRV05-4.TCT 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 SRV05-4.TCT?
For technical support, including SRV05-4.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRV05-4.TCT requirements.
6.How does Aetrix verify that SRV05-4.TCT is sourced from the original manufacturer or authorized distributors?
All SRV05-4.TCT 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 SRV05-4.TCT meets industry standards.
7.What is the process for return or replacement of SRV05-4.TCT?
All SRV05-4.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SRV05-4.TCT, 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 SRV05-4.TCT part is unused and in its original packaging.
Return procedure for SRV05-4.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRV05-4.TCT Tags
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