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Semtech Corporation SCF7500
- Part No.:
- SCF7500
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
SCF7500.pdf
- Description:
- DIODE GEN PURP 7.5KV 500MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,167
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Product details
Overview
SCF7500 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 24–40A, and 20mΩ dynamic resistance. It protects USB PD and Type-C VBus lines in industrial and portable equipment.
For engineers reviewing the SCF7500 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world USB Type-C and load switch protection use cases, and two validated alternative suppressors with documented functional trade-offs.
Technical Context
The SCF7500 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Its clamping voltage remains nearly constant across 24–40A (8/20μs) due to the FET's low RDS(on) and negative dynamic resistance slope.
Unlike conventional TVS diodes, SCF7500 maintains stable clamping (27.5–28V) from −40°C to +125°C and exhibits only 175pF junction capacitance at 22V - critical for minimizing signal distortion on high-speed power buses like USB PD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD VBus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 30V damage threshold of common load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30kV contact/air (IEC 61000-4-2) - exceeds automotive and consumer ESD requirements. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough to avoid disrupting USB PD communication timing on VBus. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients. |
| Operating Temperature | −40°C to +125°C - supports operation in harsh environments including industrial motor drives and outdoor IoT gateways. |
Pinout & Package
SCF7500 is housed in a RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad not required - energy is dissipated via the FET channel, not junction heating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize 40A capability and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., USB PD VBus); parallel connection ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across full 24–40A range - eliminates need for oversized margining in PD controller protection. |
| Temperature-stable clamping | 27.5–28V clamping maintained from −40°C to +125°C - removes thermal derating calculations required for standard TVS diodes. |
| Low dynamic resistance | 20mΩ enables <10ns response to EOS events and reduces voltage overshoot during sub-microsecond surges. |
| High-energy surge handling | 1120W peak pulse power rating supports repeated 40A surges without degradation - suitable for field-deployed industrial interfaces. |
| DFN-6 footprint | 1.6mm × 1.6mm area saves >60% board space vs. SO-8 TVS solutions while maintaining robust thermal and electrical performance. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBus line of a USB Type-C port supporting up to 20V/5A PD negotiation against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the Type-C receptacle, clamping transients before they reach the PD controller and buck-boost IC. Use Value: Maintains 27.5V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in PD controllers rated for ≤30V absolute maximum. |
Use Scenario: Safeguarding the input of an industrial-grade load switch (e.g., HS2950P) powering sensors or actuators in remote metering or robotics systems. IC Role / Device Role / Timing Role: Primary front-end EOS protector on the VIN rail, absorbing 1.2/50μs + 8/20μs combination wave surges per IEC 61000-4-5. Use Value: Limits voltage seen by the load switch's internal FET to <28V - avoids breakdown of 30V-rated silicon and preserves OVP/UVLO functionality during surge events. |
| IoT Gateway DC Power Input Protection | Storage Device 24V Rail Protection |
Use Scenario: Securing the 22V DC input of an outdoor IoT gateway powered via PoE++ or external adapter against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Standalone transient suppressor on the main DC input, upstream of DC-DC converters and battery management ICs. Use Value: Delivers 40A surge current handling with <175pF capacitance - avoids interference with upstream power supply feedback loops or telemetry signal integrity. |
Use Scenario: Protecting the 22V auxiliary rail of an NVMe SSD enclosure or enterprise HDD backplane against hot-plug transients and ESD during maintenance. IC Role / Device Role / Timing Role: Bus-level clamp on shared 22V power distribution net, coordinated with local TVS devices on data lanes. Use Value: Provides consistent 27.5V clamping across temperature - ensures reliable operation even inside thermally constrained storage enclosures operating at 85°C ambient. |
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 marking code T22 - confirmed drop-in replacement per Semtech documentation. | Same USB PD, load switch, and industrial 22V rail use cases; validated in Semtech reference designs. | Select when requiring direct Semtech-sourced production continuity or dual-sourcing from same fab. |
| SP1003-02HTG | Lower 30A IPP rating, higher 33V clamping at 30A, 22pF capacitance - based on polymer-based TVS architecture, not FET-based. | Suitable for lower-energy 22V applications where 40A surge immunity is not mandated; less effective at high temperature. | Choose for cost-sensitive designs with relaxed surge requirements and where ultra-low capacitance (<25pF) is prioritized over clamping stability. |
Compared with SCF7500, TDS2211P offers identical performance and fit, while SP1003-02HTG trades clamping stability and surge rating for lower capacitance and cost - making SCF7500 optimal for mission-critical 22V bus protection where thermal consistency and 40A compliance are mandatory.
Availability
SCF7500 is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT gateway DC power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SCF7500 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 connectivity.
The SCF7500 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 20–24V power bus protection applications demanding flat clamping and temperature insensitivity.
FAQ
What is the exact package type and dimensions of the SCF7500?
The SCF7500 uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with no thermal pad required. Pins 1–3 are GND; pins 4–6 are IN. All six terminals must be soldered per Semtech layout guidelines to achieve full 40A surge rating and minimal parasitic inductance.
Does the SCF7500 meet IEC 61000-4-5 Level 4 surge immunity?
Yes - the SCF7500 is rated for 40A peak pulse current (8/20μs) and ±1kV (1.2/50μs, RS = 42Ω), satisfying IEC 61000-4-5 Level 4 for industrial environments. Its 27.5–28V clamping ensures protected ICs remain within safe operating voltage limits during full-spectrum surge testing.
How does the SCF7500 differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with current (VC = VBR + IPP × RDYN), the SCF7500 uses a triggered FET to maintain near-constant clamping (27.5–28V) from 24A to 40A and across −40°C to +125°C - eliminating thermal derating and enabling tighter system voltage margins.
Can the SCF7500 be used to protect USB Type-C CC lines?
No - the SCF7500 is rated for 22V working voltage and intended for VBus or power-line protection. For CC/SBU lines, Semtech recommends uClamp2411ZA (24V, low-capacitance TVS). Using SCF7500 on CC lines would risk damage due to its higher capacitance (175pF) and inappropriate voltage threshold.
Is the SCF7500 pin-compatible with TDS2211P?
Yes - SCF7500 and TDS2211P share identical DFN-6 pinout (pins 1–3 = GND, pins 4–6 = IN), mechanical dimensions, marking code (T22), and full electrical specifications. Semtech documentation confirms them as functionally and physically interchangeable in all supported applications.
SCF7500 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 7500 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 9.2 V @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 7500 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
SCF7500 FAQ
1.How can I place an order for SCF7500 through Aetrix?
Please submit a Request for Quotation (RFQ) for SCF7500 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 SCF7500 reliable?
The price and inventory of SCF7500 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SCF7500 is usually 5 days.
3.What payment methods are accepted for SCF7500?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SCF7500 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SCF7500?
SCF7500 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SCF7500 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 SCF7500?
For technical support, including SCF7500 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SCF7500 requirements.
6.How does Aetrix verify that SCF7500 is sourced from the original manufacturer or authorized distributors?
All SCF7500 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 SCF7500 meets industry standards.
7.What is the process for return or replacement of SCF7500?
All SCF7500 units undergo pre-shipment inspection (PSI). If there is an issue with SCF7500, 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 SCF7500 part is unused and in its original packaging.
Return procedure for SCF7500:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SCF7500 Tags
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