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Semtech Corporation 1N6461
- Part No.:
- 1N6461
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6461.pdf
- Description:
- TVS DIODE 5VWM 9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,001
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Product details
Overview
1N6461 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 20mΩ dynamic resistance. It protects USB PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6461 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature (−40°C to +125°C), low dynamic resistance enabling flat clamping vs. current, DFN 1.6×1.6mm package footprint, and shunt-FET architecture versus conventional TVS diodes.
Technical Context
The 1N6461 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage and drives the FET into low-RDS(on) conduction. This architecture delivers near-constant clamping voltage-27.5–28V across 24A–40A-and minimal temperature drift compared to junction-based TVS diodes.
It operates with reverse stand-off voltage (VRWM) of 22V, breakdown voltage (VBR) of 25–27.9V at 1mA, and exhibits only 175pF junction capacitance at 22V/1MHz-critical for minimizing signal distortion on protected buses. Its 6-pin DFN layout separates three GND pins (1–3) and three IN pins (4–6) to maximize surge current handling and ground return path integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V reverse stand-off voltage-matches nominal USB PD VBus and industrial 24V rail margins without leakage or false triggering. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs)-holds below typical 30V damage thresholds of load switches and PD controllers across full temperature range. |
| Peak Pulse Current | 40A (8/20μs)-meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD endpoints. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2)-exceeds automotive and consumer ESD requirements without degradation after repeated strikes. |
| Dynamic Resistance | 20mΩ-enables flat clamping curve; eliminates linear VC = VBR + IPP×RDYN rise seen in standard TVS diodes. |
| Junction Capacitance | 175pF at 22V/1MHz-low enough to avoid signal integrity issues on 20V DC bus lines while maintaining robust surge energy absorption. |
Pinout & Package
1N6461 is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six terminals. The package includes thermal and mechanical design features optimized for high-current surge dissipation without requiring an exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| 4, 5, 6 | IN | Protected line input-connects directly to VBus or power rail; parallel connection ensures uniform current sharing and lowest possible clamping impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Shunt-FET protection architecture | Replaces PN-junction TVS with actively triggered MOSFET, delivering stable clamping independent of pulse amplitude or ambient temperature. |
| Constant clamping across current range | 27.5–28V from 24A to 40A (1.2/50μs + 8/20μs combo waveform)-prevents overvoltage stress on downstream ICs during worst-case surges. |
| Low dynamic resistance | 20mΩ-reduces IR drop under surge, enabling tighter voltage control than TVS devices with >1Ω RDYN. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz)-protects against repetitive fast transients in motor drives and industrial PLCs. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the 20V–22V VBus line in USB Type-C ports supporting Power Delivery up to 100W. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or load switch, clamping surges before they reach sensitive silicon. Use Value: Maintains 27.5–28V clamping at 40A and −40°C to +125°C-ensuring PD controller survival where standard TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end EOS protector, absorbing 8/20μs transients before they stress the load switch's internal FET drain-source junction. Use Value: 20mΩ RDYN limits voltage overshoot during fast-rising events, preventing latch-up or permanent damage to the load switch's overvoltage protection circuitry. |
| 22V Industrial Power Rail Protection | Tablet & Notebook VBus Line Protection |
|
Use Scenario: Securing 24V nominal DC power rails in programmable logic controllers (PLCs), factory automation sensors, and HMI panels. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main supply input, coordinated with upstream fusing and downstream LDOs or DC-DC converters. Use Value: 1120W peak pulse power rating and UL 94V-0 molding compound support long-term reliability in harsh, high-humidity industrial environments. |
Use Scenario: Protecting the VBus line in thin-and-light notebooks and tablets where board space and thermal constraints limit traditional TVS solutions. IC Role / Device Role / Timing Role: Compact 1.6×1.6mm DFN suppressor mounted adjacent to USB-C receptacle, minimizing trace inductance and PCB area. Use Value: 175pF capacitance avoids signal integrity impact on 20V DC bus while delivering same 40A surge rating as larger SO-8 TVS alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A, 1.5Ω RDYN, 1500pF capacitance. | Higher clamping voltage and strong temperature dependence-less suitable for 22V systems with tight margin or wide operating temperature. | Select 1N6461 when clamping stability, low capacitance, or 40A surge rating is required; SMAJ22A may suffice for lower-energy, cost-sensitive designs. |
| TDS2211P | Same die, identical electrical specs and package; 1N6461 is Semtech's alternate orderable part number for TDS2211P per official product documentation. | No functional difference-identical use cases, pinout, and layout requirements. | 1N6461 and TDS2211P are interchangeable; choose based on distributor stock, reel size, or marking preference (T22 vs. alternate code). |
Compared with SMAJ22A, 1N6461 offers 8.5V lower clamping at rated current and 10× lower capacitance-critical for protecting modern 22V power management ICs. Against TDS2211P, 1N6461 is functionally identical with no design or qualification differences.
Availability
1N6461 is available at Aetrix Electronics and suitable for USB Power Delivery interfaces, industrial load switch inputs, and 22V power rail protection requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for 1N6461 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 semiconductor company specializing in analog and mixed-signal ICs for precision sensing, power management, and transient protection.
The 1N6461 belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 20–24V systems where clamping stability, low capacitance, and surge robustness are critical.
FAQ
What is the exact package type and dimensions of the 1N6461?
The 1N6461 is supplied in a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed copper pads for GND (pins 1–3) and IN (pins 4–6). It complies with JEDEC MO-229 standards, features Pb-free and halogen-free construction, and carries UL 94V-0 flammability rating. No thermal pad is required-the device dissipates surge energy within the silicon FET structure.
How does the 1N6461 differ from a standard TVS diode like SMAJ22A?
The 1N6461 uses an actively triggered shunt FET instead of a passive PN junction, resulting in 20mΩ dynamic resistance versus >1Ω in SMAJ22A. This yields flat 27.5–28V clamping from 24A to 40A and minimal temperature drift-unlike SMAJ22A's 35.5V clamping at 12.3A and rising VC above 25°C. The 1N6461 also offers 175pF vs. 1500pF capacitance.
Is the 1N6461 pin-compatible with TDS2211P?
Yes-the 1N6461 and TDS2211P share identical pin configuration (GND on pins 1–3, IN on pins 4–6), electrical specifications, thermal profile, and DFN 1.6×1.6mm package. Semtech documents 1N6461 as an alternate orderable part number for TDS2211P; no PCB or schematic changes are needed when substituting between them.
What is the maximum operating temperature range for the 1N6461?
The 1N6461 is rated for continuous operation from −40°C to +125°C ambient temperature, with junction temperature extending to +150°C. Clamping voltage remains stable across this full range-27.5–28V at 40A-as confirmed in the datasheet's "Clamping Voltage vs. Temperature" curves-making it suitable for under-hood automotive modules and industrial enclosures.
Can the 1N6461 protect high-speed data lines such as USB SuperSpeed or DisplayPort?
No-the 1N6461 is designed exclusively for DC power or low-frequency I/O lines (e.g., VBus, CC, SBU, load switch inputs) due to its 175pF junction capacitance. For SuperSpeed TX/RX or DP lanes, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25pF); the 1N6461 must be used only on non-signaling DC paths to avoid signal attenuation or jitter.
1N6461 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 5.6V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 56A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6461 FAQ
1.How can I place an order for 1N6461 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6461 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 1N6461 reliable?
The price and inventory of 1N6461 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6461 is usually 5 days.
3.What payment methods are accepted for 1N6461?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6461 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6461?
1N6461 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6461 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 1N6461?
For technical support, including 1N6461 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6461 requirements.
6.How does Aetrix verify that 1N6461 is sourced from the original manufacturer or authorized distributors?
All 1N6461 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 1N6461 meets industry standards.
7.What is the process for return or replacement of 1N6461?
All 1N6461 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6461, 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 1N6461 part is unused and in its original packaging.
Return procedure for 1N6461:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6461 Tags
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