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Semtech Corporation 1N6463US
- Part No.:
- 1N6463US
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6463US.pdf
- Description:
- TVS DIODE 12VWM 22.6VC
- Quantity:
- Payment:
- Shipping:
Inventory:6,109
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Product details
Overview
1N6463US 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 PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6463US 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 EOS-critical bus protection designs.
Technical Context
The 1N6463US 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 peak pulse current due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with stable 27.5–28V clamping at 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), and maintains <600nA reverse leakage at 22V across temperature - enabling reliable protection in thermally demanding industrial and automotive-edge applications.
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 - stays below 30V damage threshold of common load switches and 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 Class 4 system-level ESD requirements. |
| Dynamic Resistance | 20mΩ - enables low-voltage overshoot during fast transients and minimizes power dissipation. |
| Junction Capacitance | 175pF at 22V - suitable for DC power rails and low-speed control lines; not for high-speed data lanes. |
Pinout & Package
1N6463US is housed in a RoHS-compliant DFN-6 package (1.6mm × 1.6mm × 0.55mm) with exposed thermal pad not required - energy is dissipated in the FET channel, not junction heating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to maximize current sharing and minimize inductance. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBus); parallel connection ensures uniform current distribution and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Delivers flat clamping voltage across 24–40A, eliminating linear VC = VBR + IPP×RDYN drift seen in TVS diodes. |
| Temperature-stable clamping | 27.5–28V clamping maintained from –40°C to +125°C - critical for uncooled industrial enclosures. |
| Low dynamic resistance | 20mΩ enables sub-1V overshoot during 10ns/dt transients, reducing stress on downstream FET gates. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz burst) - protects against switching noise in motor drives and PLCs. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBus lines in USB-C ports supporting up to 100W PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, shunting EOS energy to GND before it reaches PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - avoids false overvoltage shutdown and prevents gate oxide damage in PD ICs rated ≤30V. |
Use Scenario: Securing input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Primary front-end EOS protector for 24V supply rails feeding smart load switches with integrated OVP/UVLO. Use Value: Clamps transients below the 32V absolute maximum rating of typical load switch internal FETs, preventing latch-up or permanent failure. |
| IoT Device DC Power Rail Protection | Storage Device 12–24V Backplane Protection |
Use Scenario: Safeguarding 22V auxiliary rails in battery-powered gateways and edge AI nodes subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing bulkier MOV+TVS stacks, minimizing board area in space-constrained modules. Use Value: 1.6mm × 1.6mm DFN footprint saves >70% area vs. SO-8 TVS solutions while delivering higher surge rating and lower clamping. |
Use Scenario: Protecting shared 24V backplane supplies in NAS enclosures and RAID controllers against cross-coupled surges from failing drives or hot-swap events. IC Role / Device Role / Timing Role: Point-of-load EOS suppressor mounted near backplane connectors to limit transient propagation across multiple drive bays. Use Value: 1120W peak pulse power handling and stable clamping ensure simultaneous protection of multiple downstream regulators without voltage collapse. |
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 - direct manufacturer-recommended replacement for 1N6463US. | Identical use case: 22V bus protection with 40A surge rating and ±30kV ESD. | Select TDS2211P when sourcing from Semtech's official distribution channel; same marking code "T22" and reel packaging. |
| SM712-01HTG | TVS diode array (SOT-23), 12V working voltage, 30A (8/20μs), 23V clamping - lower voltage rating and higher clamping drift with temperature. | Limited to 12V systems; unsuitable for 22V USB PD or 24V industrial rails. | Only consider for legacy 12V designs where board space allows SOT-23; not a functional substitute for 1N6463US. |
Compared with TDS2211P (identical spec), 1N6463US offers identical performance and form factor; SM712-01HTG provides lower-cost TVS protection but lacks flat clamping, temperature stability, and 22V operating margin required for modern PD and industrial applications.
Availability
1N6463US is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and IoT device DC power rails requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6463US 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, signal integrity, and power management.
The 1N6463US belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace traditional TVS diodes in high-reliability 22V bus protection applications where flat clamping and temperature stability are mandatory.
FAQ
What is the exact package type and dimensions of the 1N6463US?
The 1N6463US is supplied in a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad not required. Pins 1–3 are GND; pins 4–6 are IN. All six pins must be soldered to achieve full 40A surge rating and minimal parasitic inductance, per Semtech's layout guidelines.
Does the 1N6463US meet IEC 61000-4-5 Level 4 surge immunity?
Yes, the 1N6463US is rated for 40A peak pulse current under the 8/20μs waveform per IEC 61000-4-5, satisfying Level 4 (4kV open-circuit, 2Ω source impedance) for industrial environments. Its 27.5–28V clamping at 40A ensures protected circuits remain within safe operating limits during such events.
How does the clamping behavior of the 1N6463US differ from standard TVS diodes?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP×RDYN), the 1N6463US uses a triggered FET shunt that maintains 27.5–28V clamping from 24A to 40A and across –40°C to +125°C - eliminating thermal derating and simplifying worst-case design margins.
Can the 1N6463US be used on high-speed data lines like USB SuperSpeed or PCIe?
No, the 1N6463US has 175pF junction capacitance at 22V, making it unsuitable for high-speed differential data lanes. It is intended exclusively for DC power rails and low-speed control lines. For USB SS or DP/DM lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF).
Is the 1N6463US RoHS and halogen-free compliant?
Yes, the 1N6463US is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and lead finish is lead-free - confirmed in Semtech's official datasheet Rev 2.5.
1N6463US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.6V
- Voltage - Clamping (Max) @ Ipp:
- 22.6V
- Current - Peak Pulse (10/1000µs):
- 22A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6463US FAQ
1.How can I place an order for 1N6463US through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6463US 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 1N6463US reliable?
The price and inventory of 1N6463US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6463US is usually 5 days.
3.What payment methods are accepted for 1N6463US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6463US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6463US?
1N6463US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6463US 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 1N6463US?
For technical support, including 1N6463US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6463US requirements.
6.How does Aetrix verify that 1N6463US is sourced from the original manufacturer or authorized distributors?
All 1N6463US 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 1N6463US meets industry standards.
7.What is the process for return or replacement of 1N6463US?
All 1N6463US units undergo pre-shipment inspection (PSI). If there is an issue with 1N6463US, 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 1N6463US part is unused and in its original packaging.
Return procedure for 1N6463US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6463US Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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