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Semtech Corporation SRDA05-4.TLT
- Part No.:
- SRDA05-4.TLT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SRDA05-4.TLT.pdf
- Description:
- TVS DIODE 5VWM 20VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,091
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Product details
Overview
SRDA05-4.TLT 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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SRDA05-4.TLT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF), DFN 1.6×1.6 mm package constraints, and compatibility with 22V bus systems requiring robust EOS resilience.
Technical Context
The SRDA05-4.TLT 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 RDS(on) under increasing IPP.
It operates over –40°C to +125°C, maintains ≤600 nA reverse leakage at 22V, and delivers 1120 W peak pulse power (8/20μs). Its functional architecture enables stable 27.5–28V clamping at both 24A and 40A surges - critical for protecting USB PD controllers and load switches against voltage overshoot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays below 29V threshold to protect 30V-tolerant ICs like HS2950P load switches. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and consumer interface ESD requirements. |
| Dynamic Resistance | 20 mΩ - ensures minimal voltage rise during surge conduction, enabling predictable clamping behavior. |
| Junction Capacitance | 175 pF at 22V / 1 MHz - compatible with DC power rails and low-speed signal lines (e.g., CC/SBU, VBus). |
| Package | DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead - enables compact placement near connectors with minimal PCB area. |
Pinout & Package
SRDA05-4.TLT is housed in a Pb-free, RoHS-compliant DFN 1.6 mm × 1.6 mm × 0.55 mm package with exposed thermal pad not required - all six terminals are functional: three GND pins (1–3) and three IN pins (4–6), requiring parallel connection for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Ground | Low-inductance return path for surge current; all three must be connected to ground plane via multiple vias. |
| 4, 5, 6 | Input (Protected Line) | Parallel-connected anode-side terminals for 22V bus or power line protection; single-point connection to connector minimizes trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Enables flat clamping curve - VC varies <0.5 V from 24A to 40A, unlike TVS diodes whose VC rises linearly with IPP. |
| Temperature-stable clamping | Clamping remains ~27.6 V from –40°C to +125°C - eliminates thermal derating calculations for industrial ambient conditions. |
| High-energy surge handling | 1120 W peak pulse power supports repeated 40A transients without degradation - suitable for remote metering and robotics. |
| Low dynamic resistance | 20 mΩ RDYN ensures minimal IR drop during surge, preserving voltage margin for downstream 30V-rated components. |
| Compact DFN layout | 1.6×1.6 mm footprint saves >60% board space vs. SO-8 TVS solutions - ideal for USB Type-C receptacle edge routing. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBus lines in USB-C ports supporting up to 20V/5A PD negotiation against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Front-end transient suppressor placed between Type-C connector and PD controller or load switch (e.g., HS2950P). Use Value: Maintains clamping at ≤28 V across temperature and 40A surge - prevents damage to 30V-max PD controllers while eliminating thermal derating uncertainty. |
Use Scenario: Shielding e-fuse and load switch inputs in programmable logic controllers, remote sensors, and robotic actuators exposed to 42 Ω/0.5 μF surge events. IC Role / Device Role / Timing Role: Primary EOS barrier upstream of integrated load switches to limit gate-source and drain-source overvoltage. Use Value: Clamps at 27.6 V even at 125°C - keeps stress below 80% of typical 35V load switch VDS(max), extending reliability in uncooled enclosures. |
| IoT Edge Node Power Bus Protection | Notebook/Tablet DC Input Protection |
|
Use Scenario: Securing 12–24V DC input rails in battery-powered gateways and cellular IoT modules subject to field ESD and induced transients. IC Role / Device Role / Timing Role: Single-device solution for bus-level EOS suppression, replacing multi-component TVS+capacitor networks. Use Value: 175 pF capacitance avoids signal integrity issues on DC rails; ±30 kV ESD rating covers handheld device handling and docking events. |
Use Scenario: Safeguarding 20V adapter inputs in ultrabooks and tablets against accidental AC mains coupling and ESD during hot-plug events. IC Role / Device Role / Timing Role: Standalone surge clamp on main DC input before buck converter and battery charge management ICs. Use Value: Stable 27.5–28 V clamping ensures no overvoltage reaches 24V-input PMICs - reduces need for secondary overvoltage lockout circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - SRDA05-4.TLT is Semtech's alternate marking for TDS2211P per official cross-reference. | Identical use cases: USB-C PD, load switch input, industrial 22V bus. | Select SRDA05-4.TLT for standard Digi-Key/Mouser availability; TDS2211P may offer direct factory lead times. |
| SRV05-4.TCT | TVS-based array (not FET-shunt); higher clamping (~33 V at 24A), 30% higher dynamic resistance, 250 pF capacitance. | Suitable only where clamping margin >30 V exists; less effective for 30V-tolerant ICs. | Choose only if cost sensitivity outweighs clamping performance; verify 33 V clamping does not exceed downstream IC VABS MAX. |
Compared with TDS2211P (identical function), SRDA05-4.TLT offers identical performance and sourcing flexibility; versus SRV05-4.TCT, it delivers 5.5 V lower clamping and 30% lower dynamic resistance - directly improving margin for 30V-rated load switches and PD controllers.
Availability
SRDA05-4.TLT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT 22V power bus protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SRDA05-4.TLT 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 analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
SRDA05-4.TLT belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications demanding flat clamping and temperature stability.
FAQ
What is the exact package type and dimensions of SRDA05-4.TLT?
SRDA05-4.TLT uses a DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with 6 leads. Pins 1–3 are ground terminals; pins 4–6 are input terminals. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 molding compound - matching Semtech's TDS2211P mechanical specification exactly.
Does SRDA05-4.TLT have the same electrical specifications as TDS2211P?
Yes, SRDA05-4.TLT is a Semtech-authorized alternate marking for TDS2211P. Both share identical absolute maximum ratings (40A IPP, 1120W PPK), electrical characteristics (22V VRWM, 27.5–28V clamping at 40A), thermal range (–40°C to +125°C), and functional block diagram - confirmed in Semtech's official cross-reference documentation.
How does SRDA05-4.TLT achieve stable clamping voltage across temperature and current?
SRDA05-4.TLT uses a surge-rated FET as its protection element, activated by a precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting IR rise - resulting in clamping voltage variation of <0.5 V from 24A to 40A and <0.3 V from –40°C to +125°C, unlike TVS diodes whose VC rises linearly with both parameters.
Can SRDA05-4.TLT be used to protect USB Type-C CC and SBU lines?
No - SRDA05-4.TLT is optimized for 22V power/bus protection (e.g., VBus) with 175 pF capacitance, which is too high for CC/SBU data lines requiring sub-1 pF devices like uClamp2411ZA. It is intended for high-energy, low-frequency surge suppression, not high-speed signal line ESD.
What is the recommended PCB layout for optimal surge performance with SRDA05-4.TLT?
Place SRDA05-4.TLT within 3 mm of the protected connector. Connect all three IN pins (4–6) via a single short, wide trace to the line; connect all three GND pins (1–3) to a solid ground plane using ≥4 vias. Avoid thermal pads - energy is dissipated in the silicon FET, not the package - and minimize trace inductance to preserve clamping response.
SRDA05-4.TLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- RailClamp®, SRDA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 25A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 8pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SRDA05-4.TLT FAQ
1.How can I place an order for SRDA05-4.TLT through Aetrix?
Please submit a Request for Quotation (RFQ) for SRDA05-4.TLT 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 SRDA05-4.TLT reliable?
The price and inventory of SRDA05-4.TLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRDA05-4.TLT is usually 5 days.
3.What payment methods are accepted for SRDA05-4.TLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRDA05-4.TLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRDA05-4.TLT?
SRDA05-4.TLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRDA05-4.TLT 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 SRDA05-4.TLT?
For technical support, including SRDA05-4.TLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRDA05-4.TLT requirements.
6.How does Aetrix verify that SRDA05-4.TLT is sourced from the original manufacturer or authorized distributors?
All SRDA05-4.TLT 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 SRDA05-4.TLT meets industry standards.
7.What is the process for return or replacement of SRDA05-4.TLT?
All SRDA05-4.TLT units undergo pre-shipment inspection (PSI). If there is an issue with SRDA05-4.TLT, 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 SRDA05-4.TLT part is unused and in its original packaging.
Return procedure for SRDA05-4.TLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRDA05-4.TLT Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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