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Semtech Corporation 1N6124AUS
- Part No.:
- 1N6124AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6124AUS.pdf
- Description:
- TVS DIODE 42.6VWM 77VC
- Quantity:
- Payment:
- Shipping:
Inventory:2,178
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Product details
Overview
1N6124AUS 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), and stable 27.5–28V clamping across temperature and current range. It protects USB PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6124AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 22V bus protection design.
Technical Context
The 1N6124AUS 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 standard TVS diodes, its clamping voltage remains nearly constant-27.5–28V at 24A and 40A-due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with <600nA reverse leakage at 22V, 175pF junction capacitance at 22V/1MHz, and 20mΩ dynamic resistance (8/20μs). The device is rated for 1120W peak pulse power and meets IEC 61000-4-4 (±4kV EFT), -4-5 (±1kV unsymmetrical), and -4-2 (±30kV) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave, RS=2Ω) - ensures downstream ICs like USB PD controllers remain below damage threshold |
| Peak Pulse Current | 40A (8/20μs) - supports industrial surge immunity per IEC 61000-4-5 Level 3/4 |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds smartphone/tablet ESD requirements |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for VBus protection without signal integrity impact |
| Dynamic Resistance | 20mΩ (8/20μs, 1–40A range) - enables flat clamping curve, unlike TVS with linear VC = VBR + IPP×RDYN |
Pinout & Package
1N6124AUS is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. All six terminals must be connected for full 40A surge rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be tied to low-inductance ground plane via multiple vias |
| Pins 4, 5, 6 | IN | Protected line input (e.g., USB PD VBus); all three pins connect in parallel to minimize trace inductance and maximize current sharing |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28V) across 1–40A surge range and −40°C to +125°C ambient |
| Low dynamic resistance | 20mΩ ensures minimal voltage rise during high di/dt transients, critical for protecting sensitive load switches |
| High ESD robustness | ±30kV contact/air withstand eliminates need for secondary ESD stages in USB Type-C port designs |
| Thermal stability | No derating required up to +125°C ambient-clamping voltage drift <0.5V over full temperature range |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V USB PD VBus lines against lightning surges, ESD, and connector hot-plug transients in notebooks and docking stations. IC Role / Device Role / Timing Role: Primary high-energy shunt suppressor placed adjacent to 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-10V lower than typical 22V TVS at same conditions-preventing PD controller latch-up or overvoltage damage. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) exposed to 42Ω/0.5μF surge events in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across load switch FET drain-source during EOS, preventing gate oxide rupture or thermal runaway. Use Value: Clamps within 28V at full 40A rating, staying well below 30V+ absolute max ratings of most 24V-rated load switches-enabling single-stage protection without derating. |
| IoT Device Power Rail Protection | Storage Device 22V Supply Protection |
Use Scenario: Securing 22V auxiliary rails in battery-powered IoT gateways subjected to ESD during field servicing or cable hot-insertion. IC Role / Device Role / Timing Role: Solid-state EOS protector replacing bulkier MOV/TVS stacks, providing fast response (<1ns trigger latency) and no wear-out mechanism. Use Value: 175pF capacitance avoids filtering or signal distortion on shared power rails; ±30kV ESD rating eliminates need for external spark gaps in compact enclosures. |
Use Scenario: Shielding 22V power inputs of NVMe SSD enclosures and enterprise storage backplanes from system-level surges during rack insertion or AC line faults. IC Role / Device Role / Timing Role: High-power transient suppressor mounted at board edge, diverting 8/20μs surges directly to chassis ground before reaching PMIC or DC-DC converters. Use Value: 1120W peak pulse power rating handles repeated 40A surges without parameter shift-critical for mission-critical storage systems requiring long-term reliability. |
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 functional specification, pinout, and package; same Semtech datasheet revision (Rev 2.5, Nov 2021); 1N6124AUS is a Semtech-marked variant of TDS2211P | Direct drop-in replacement with identical layout, BOM, and test plan; used interchangeably in USB PD reference designs | Select TDS2211P when sourcing from authorized Semtech distributors; both share identical qualification data and AEC-Q200 stress test results |
| SP1003-220K | Standard bi-directional TVS diode (not FET-based); 22V VRWM, 35.5V VC @ 30A (8/20μs); higher clamping, no temperature stability | Requires larger PCB area and thermal relief; clamping rises to >40V at 125°C-may exceed downstream IC limits | Choose SP1003-220K only if cost sensitivity outweighs clamping performance and thermal margin requirements |
Compared with TDS2211P and SP1003-220K, the 1N6124AUS delivers identical FET-based clamping performance and layout compatibility as TDS2211P but with Semtech's proprietary marking and traceability; versus SP1003-220K, it provides 12V lower clamping at full surge current and zero thermal derating-critical for high-reliability 22V rail protection.
Availability
1N6124AUS is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT power rail protection requiring stable component supply, long-lifecycle support, and guaranteed RoHS/halogen-free compliance.
Supply support for 1N6124AUS 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 solutions.
The 1N6124AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping and thermal immunity are mandatory.
FAQ
What is the exact package type and dimensions of the 1N6124AUS?
The 1N6124AUS uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad-less construction. Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. Land pattern follows Semtech's recommended 1.45mm × 1.45mm solder pad layout with 0.30mm pitch.
Does the 1N6124AUS meet IEC 61000-4-5 surge immunity requirements?
Yes, the 1N6124AUS is rated for 40A peak pulse current (8/20μs waveform) and complies with IEC 61000-4-5 Level 4 (±1kV, 42Ω source impedance) for unsymmetrical lines. Its 27.5–28V clamping ensures protected circuits remain within safe operating limits during standardized surge testing.
How does the clamping voltage of the 1N6124AUS compare to standard TVS diodes at elevated temperature?
Unlike standard TVS diodes whose clamping voltage increases significantly with temperature, the 1N6124AUS maintains 27.5–28V clamping from −40°C to +125°C due to its FET-based architecture. At 125°C and 40A, its clamping is ~10V lower than a typical 22V TVS, preventing overvoltage failure in thermally stressed environments.
Can the 1N6124AUS be used for bidirectional transient protection?
No-the 1N6124AUS is unidirectional. It protects positive transients on a 22V rail referenced to ground; negative excursions below ground are not suppressed. For bidirectional protection, a separate low-capacitance TVS (e.g., RClamp3371ZC) must be added on signal lines, while 1N6124AUS handles high-energy VBus surges.
What is the maximum junction temperature and thermal derating behavior of the 1N6124AUS?
The 1N6124AUS has a maximum junction temperature of +150°C and operates continuously from −40°C to +125°C ambient. Its clamping voltage and leakage current are fully specified across this range; no thermal derating of peak pulse current is required-40A rating holds at +125°C ambient.
1N6124AUS 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 42.6V (Max)
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6124AUS FAQ
1.How can I place an order for 1N6124AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6124AUS 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 1N6124AUS reliable?
The price and inventory of 1N6124AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6124AUS is usually 5 days.
3.What payment methods are accepted for 1N6124AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6124AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6124AUS?
1N6124AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6124AUS 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 1N6124AUS?
For technical support, including 1N6124AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6124AUS requirements.
6.How does Aetrix verify that 1N6124AUS is sourced from the original manufacturer or authorized distributors?
All 1N6124AUS 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 1N6124AUS meets industry standards.
7.What is the process for return or replacement of 1N6124AUS?
All 1N6124AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6124AUS, 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 1N6124AUS part is unused and in its original packaging.
Return procedure for 1N6124AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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