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Semtech Corporation RCLAMP0504FATCT
- Part No.:
- RCLAMP0504FATCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
RCLAMP0504FATCT.pdf
- Description:
- TVS DIODE 5VWM 25VC SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:67,011
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Product details
Overview
RCLAMP0504FATCT 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), 27.5–28V clamping voltage at 40A, and ultra-low 20mΩ dynamic resistance. It protects USB Type-C VBus, load switch inputs, and industrial power rails where stable clamping under temperature and current stress is critical.
For engineers reviewing the RCLAMP0504FATCT 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 validated alternative parts with documented functional trade-offs.
Technical Context
RCLAMP0504FATCT 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) under surge conditions.
The device operates from −40°C to +125°C with stable 27.5–28V clamping at 40A and maintains <600nA reverse leakage at 22V. Its 175pF junction capacitance at 22V/1MHz and 20mΩ dynamic resistance enable low-voltage overshoot control in high-speed power bus protection.
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 |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements for front-end interfaces |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS=42Ω) on unsymmetrical lines |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage rise under increasing surge current |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current handling and minimize parasitic inductance |
| 4, 5, 6 | IN | Protected line input (e.g., USB PD VBus); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A surge range - eliminates design margin inflation needed with conventional TVS devices |
| Temperature-stable clamping | No increase in VC from −40°C to +125°C - enables reliable protection in automotive and industrial ambient conditions |
| FET-based shunt architecture | 20mΩ dynamic resistance - reduces voltage overshoot during fast-rising transients compared to PN-junction TVS |
| Low leakage | <600nA at 22V - prevents power loss and avoids false triggering in always-on 22V systems |
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, connector hot-plug transients, and ESD events. IC Role / Device Role / Timing Role: Primary shunt protector placed directly at Type-C connector, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - keeps PD controller within safe operating area where standard TVS would exceed 38V. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) exposed to field wiring surges in remote meters or robotics. IC Role / Device Role / Timing Role: Front-end EOS suppressor that limits voltage across the load switch's internal FET drain-source during surge events. Use Value: Prevents gate oxide damage and latch-up by holding clamping voltage below 30V - enabling use of cost-optimized 30V-rated load switches. |
| IoT Device Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Solid-state transient diverter that responds faster than MOV-based solutions and avoids wear-out mechanisms. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and stable clamping ensure uninterrupted operation during repetitive 5/50ns burst noise exposure. |
Use Scenario: Protecting 22V supercapacitor or LiFePO₄ backup supplies in enterprise SSDs and NAS enclosures against AC line coupling and board-level surges. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage protector that avoids depleting backup energy during standby. Use Value: 130–600nA leakage at 22V minimizes self-discharge - extending hold-up time beyond 72 hours in cold storage environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical 22V working voltage, 40A rating, and DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. RCLAMP0504FATCT's standard reel quantity) | Direct drop-in replacement with identical electrical and thermal performance; used interchangeably in USB PD reference designs | Select TDS2211P.C when sourcing through Semtech-authorized distribution channels requiring standard reel configuration |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 22.5A (8/20μs), higher 1.5Ω dynamic resistance, no temperature-stable clamping | Higher clamping voltage increases risk of downstream IC damage at elevated temperatures or full surge current | Choose SMAJ22A only for cost-sensitive, non-critical 22V lines where 35.5V clamping is acceptable and thermal derating is managed externally |
Compared with TDS2211P.C, RCLAMP0504FATCT offers identical protection performance but may differ in date-code marking and reel logistics; versus SMAJ22A, RCLAMP0504FATCT delivers 8V lower clamping at full current and eliminates temperature-dependent voltage drift - critical for USB PD and industrial reliability.
Availability
RCLAMP0504FATCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT 22V power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for RCLAMP0504FATCT 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 protection, sensing, and signal integrity.
RCLAMP0504FATCT 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 where clamping stability over temperature and current is mandatory.
FAQ
What is the maximum continuous operating voltage for RCLAMP0504FATCT?
RCLAMP0504FATCT has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks up to 22V DC or RMS in normal operation while maintaining leakage below 600nA. This makes RCLAMP0504FATCT suitable for protecting 20–22V USB PD VBus lines and industrial 24V-derived rails operating at reduced nominal voltage.
How does RCLAMP0504FATCT achieve stable clamping voltage across temperature?
RCLAMP0504FATCT uses a surge-rated FET activated by a precision trigger circuit instead of a PN junction. As surge current rises, the FET's RDS(on) decreases, counteracting voltage rise - resulting in 27.5–28V clamping from −40°C to +125°C. This behavior is confirmed in Figure 3 of the RCLAMP0504FATCT datasheet and differentiates it from conventional TVS diodes.
Can RCLAMP0504FATCT be used on high-speed data lines like USB SS or PCIe?
No - RCLAMP0504FATCT has 175pF junction capacitance at 22V, which is too high for SuperSpeed USB (≤0.25pF required) or PCIe signal integrity. It is intended exclusively for power or low-speed I/O lines. For data lines, Semtech recommends RClamp3371ZC (0.18pF) alongside RCLAMP0504FATCT in full USB Type-C protection schemes.
What is the recommended PCB layout for RCLAMP0504FATCT to achieve full 40A surge rating?
To achieve rated 40A (8/20μs) performance, all three IN pins (4,5,6) must be shorted together with a single low-inductance trace to the protected line, and all three GND pins (1,2,3) must connect to a solid ground plane using ≥3 vias. Placement within 5mm of the connector is required - per Figure 7 in the RCLAMP0504FATCT datasheet - to minimize inductive overshoot.
Is RCLAMP0504FATCT RoHS and REACH compliant?
Yes - RCLAMP0504FATCT 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 100% matte tin, as specified in the Mechanical Characteristics section of the RCLAMP0504FATCT datasheet.
RCLAMP0504FATCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- RailClamp®
- 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:
- 25V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- Yes
- Applications:
- USB OTG
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
RCLAMP0504FATCT FAQ
1.How can I place an order for RCLAMP0504FATCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0504FATCT 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 RCLAMP0504FATCT reliable?
The price and inventory of RCLAMP0504FATCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0504FATCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0504FATCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0504FATCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0504FATCT?
RCLAMP0504FATCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0504FATCT 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 RCLAMP0504FATCT?
For technical support, including RCLAMP0504FATCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0504FATCT requirements.
6.How does Aetrix verify that RCLAMP0504FATCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0504FATCT 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 RCLAMP0504FATCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0504FATCT?
All RCLAMP0504FATCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0504FATCT, 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 RCLAMP0504FATCT part is unused and in its original packaging.
Return procedure for RCLAMP0504FATCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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