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Semtech Corporation 1N5418C.TR
- Part No.:
- 1N5418C.TR
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
1N5418C.TR.pdf
- Description:
- DIODE GEN PURP 400V 4.5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,488
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Product details
Overview
1N5418C.TR 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 electronics.
For engineers reviewing the 1N5418C.TR datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection in USB PD, load switch input, and IoT interface designs.
Technical Context
The 1N5418C.TR implements a surge-rated FET shunt architecture with a precision trigger circuit - unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions. It operates as a voltage-controlled switch activated only during overvoltage events.
It supports unsymmetrical line protection per IEC 61000-4-5 with ±1kV (1.2/50μs, RS = 42Ω) rating and delivers 1120W peak pulse power. Its 175pF junction capacitance at 22V/1MHz and <600nA reverse leakage ensure minimal signal distortion on DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD VBus and industrial 24V rail derating requirements. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - stays below 30V damage threshold of common PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and IEC 61000-4-2 Class 4 requirements. |
| Dynamic Resistance | 20mΩ (8/20μs, 1–40A range) - enables flat clamping profile and low voltage overshoot during fast transients. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for DC power rail protection; not intended for high-speed data lines. |
| Operating Temperature | −40°C to +125°C - supports extended-range operation in automotive-adjacent and industrial environments. |
Pinout & Package
1N5418C.TR is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. All six terminals are surface-mount; no thermal pad required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path - all three must be connected to maximize surge current handling and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input - tied together to the VBus or power rail; connection to connector must be shortest possible trace. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage across full 24–40A surge range and −40°C to +125°C ambient. |
| Low dynamic resistance | 20mΩ ensures minimal voltage rise during surge onset - critical for protecting sensitive load switches and PD controllers. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - robust against repetitive burst noise in motor drives and industrial comms. |
| Small-footprint DFN-6 | 1.6mm × 1.6mm area saves >60% board space vs. SO-8 TVS solutions while maintaining 40A surge rating. |
| Lead-free & halogen-free | Complies with RoHS/WEEE and IPC/JEDEC J-STD-020 moisture sensitivity level MSL3 (260°C reflow). |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB Type-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp lightning-induced surges and ESD before reaching PD controller ICs. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids over-clamp failure modes seen with standard TVS diodes above 85°C. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters and robotics power modules. IC Role / Device Role / Timing Role: Primary EOS barrier that limits voltage stress on internal FET gate oxide and drain-source junction during 1kV surge events. Use Value: Prevents latch-up or permanent degradation of load switch ICs by holding clamping voltage well below their absolute maximum ratings (typically 30–36V). |
| IoT Edge Node Power Rail Protection | Storage Device 24V Backup Supply Protection |
Use Scenario: Securing 22V-rated auxiliary power inputs in battery-backed wireless sensor nodes exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing Zener+SCR crowbar circuits - activates within nanoseconds without follow-on current. Use Value: Eliminates need for external current-limiting resistors or hold-off timing components, reducing BOM count and PCB footprint. |
Use Scenario: Protecting 24V backup supply inputs on NVMe SSDs and enterprise storage controllers subject to hot-swap transients. IC Role / Device Role / Timing Role: Low-leakage (≤600nA @ 22V) protector ensuring standby current budget compliance while delivering 40A surge capability. Use Value: Enables reliable operation in 24V systems with tight leakage budgets - outperforms standard TVS diodes with >1μA IR at same VRWM. |
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 | Identical electrical specs, same DFN-6 package, identical marking code T22; differs only in reel quantity (3,000 vs. 1N5418C.TR's unspecified quantity). | No functional difference - used interchangeably in USB PD reference designs and Semtech evaluation boards. | Select TDS2211P.C when sourcing from authorized distributors with standard 3k/reel packaging. |
| uClamp2411ZA.TCT | 24V working voltage, lower 22A IPP rating, smaller 0.6mm × 0.6mm DFN-2 package, 0.25pF capacitance - optimized for CC/SBU lines, not power rails. | Intended for low-capacitance data-line protection; insufficient for 40A VBus surge duty. | Choose uClamp2411ZA.TCT only for auxiliary signal lines - not a drop-in replacement for 1N5418C.TR on power rails. |
Compared with TDS2211P.C, 1N5418C.TR offers identical protection performance and layout compatibility; versus uClamp2411ZA.TCT, it provides 82% higher surge current rating and 10× higher power handling - making it the sole validated option for 22V power rail EOS protection in USB PD and industrial load-switch applications.
Availability
1N5418C.TR is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for 1N5418C.TR 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 connectivity.
The TDS family - including 1N5418C.TR - was engineered specifically to replace conventional TVS diodes in high-reliability 20–30V power rail protection, delivering flat clamping and temperature stability unattainable with PN-junction devices.
FAQ
What is the primary protection function of the 1N5418C.TR?
The 1N5418C.TR functions as a transient diverting suppressor that uses a surge-rated FET and precision trigger circuit to shunt high-energy EOS events - such as ESD, lightning-induced surges, and EFT bursts - away from downstream components. Unlike TVS diodes, the 1N5418C.TR maintains a stable ~27.5–28V clamping voltage across its full 24–40A surge range and operating temperature span, making it ideal for protecting sensitive USB PD controllers and load switches.
Does the 1N5418C.TR require external bias or control signals to operate?
No, the 1N5418C.TR is fully autonomous and requires no external power, enable signals, or configuration. It operates passively: the internal trigger circuit senses overvoltage on the IN pins (4–6) relative to GND (pins 1–3), then activates the shunt FET within nanoseconds. The 1N5418C.TR draws only ≤600nA leakage at 22V in normal operation and has zero quiescent current consumption beyond that.
Can the 1N5418C.TR be used on high-speed data lines like USB SuperSpeed or PCIe?
No, the 1N5418C.TR is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above 100MHz. The 1N5418C.TR is explicitly designed for DC power rail and low-frequency I/O protection - use low-capacitance devices like RClamp3371ZC (<0.25pF) for USB SS, DP/DM, or PCIe lanes instead.
How does the 1N5418C.TR compare to standard TVS diodes in temperature stability?
The 1N5418C.TR exhibits superior temperature stability: its clamping voltage remains constant at ~27.5–28V from −40°C to +125°C, whereas conventional TVS diodes show rising clamping voltage with temperature due to fixed dynamic resistance. At 125°C, a typical 22V TVS may clamp at ~38V at 24A - exceeding safe margins for many PD controllers - while the 1N5418C.TR maintains the same clamping as at 25°C.
What PCB layout practices are critical for optimal performance of the 1N5418C.TR?
For optimal 1N5418C.TR performance, place it as close as possible to the protected connector; tie all three IN pins (4–6) together with a short, wide trace; connect all three GND pins (1–3) directly to a solid ground plane using multiple vias; avoid stubs or splits in the IN/GND paths; and ensure no other traces run beneath the device. These practices minimize parasitic inductance, which is essential to achieving rated 40A surge capability and sub-10ns response time.
1N5418C.TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 4.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 165pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
1N5418C.TR FAQ
1.How can I place an order for 1N5418C.TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5418C.TR 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 1N5418C.TR reliable?
The price and inventory of 1N5418C.TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5418C.TR is usually 5 days.
3.What payment methods are accepted for 1N5418C.TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5418C.TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5418C.TR?
1N5418C.TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5418C.TR 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 1N5418C.TR?
For technical support, including 1N5418C.TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5418C.TR requirements.
6.How does Aetrix verify that 1N5418C.TR is sourced from the original manufacturer or authorized distributors?
All 1N5418C.TR 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 1N5418C.TR meets industry standards.
7.What is the process for return or replacement of 1N5418C.TR?
All 1N5418C.TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5418C.TR, 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 1N5418C.TR part is unused and in its original packaging.
Return procedure for 1N5418C.TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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