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Semtech Corporation 1N6127
- Part No.:
- 1N6127
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6127.pdf
- Description:
- TVS DIODE 56VWM 108.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,278
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Product details
Overview
1N6127 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 Type-C power delivery buses and load switch inputs in industrial and IoT equipment.
For engineers reviewing the 1N6127 datasheet, pinout, applications, or equivalent options, this device offers stable clamping across temperature and current-critical for USB PD bus protection, industrial input surge hardening, and high-reliability load switch front-end safeguarding where conventional TVS diodes exhibit rising VC with IPP or temperature.
Technical Context
The 1N6127 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 (27.5–28V) from 24A to 40A due to the FET's decreasing RDS(on) under surge conditions.
Unlike standard TVS diodes governed by VC = VBR + IPP × RDYN, the 1N6127 achieves flat clamping by leveraging low-on-resistance switching behavior, with guaranteed 20mΩ dynamic resistance and stable performance from –40°C to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus voltage and ensures reliable stand-off without leakage-induced stress on downstream ICs. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - stays below 30V damage threshold of common 24V-rated PD controllers and load switches. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity requirements without derating. |
| Dynamic Resistance | 20mΩ - enables minimal voltage rise under surge, critical for maintaining tight clamping margin across full current range. |
| Junction Capacitance | 175pF at 22V, 1MHz - suitable for DC/low-speed power line protection; not intended for high-speed data lines. |
| Operating Temperature | –40°C to +125°C - supports extended industrial and automotive under-hood environments without clamping drift. |
Pinout & Package
1N6127 is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six leads and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize parasitic inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS or load switch VIN); parallel connection ensures uniform current sharing and thermal distribution during surge events. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A - eliminates design margin inflation needed with traditional TVS devices. |
| FET-based shunt topology | Surge energy dissipated via low-RDS(on) channel instead of PN junction - enables higher IPP and lower thermal stress vs. silicon avalanche diodes. |
| Temperature-stable clamping | VC remains 27.5–28V from –40°C to +125°C - removes need for worst-case thermal derating in industrial thermal profiles. |
| Low dynamic resistance | 20mΩ measured between 1A–40A - ensures predictable voltage drop and minimal overshoot during fast-rising transients. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in motor drives and PLC environments. |
Applications
| USB Type-C Power Delivery Bus 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 in notebooks and docking stations. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at connector, clamping surges before they reach the PD controller or buck converter. Use Value: Maintains 27.5–28V clamping across full 40A surge and –40°C to +125°C, preventing controller latch-up or MOSFET gate oxide failure where TVS devices exceed 35V at high temperature. |
Use Scenario: Safeguarding the input of an industrial-grade load switch (e.g., HS2950P) powering remote sensors or actuators in metering or robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal high-side FET during lightning-induced surges. Use Value: Keeps clamping voltage below the 30V absolute maximum rating of typical 24V-rated load switches, avoiding permanent gate oxide damage during 1kV/42Ω IEC 61000-4-5 tests. |
| IoT Edge Device Power Rail Protection | USB PD Adapter Secondary-Side Output Protection |
|
Use Scenario: Securing the 22V DC input rail of a battery-powered IoT gateway exposed to ESD during field servicing or lightning-coupled surges in outdoor enclosures. IC Role / Device Role / Timing Role: Single-component, board-space-efficient suppressor replacing multi-diode TVS arrays while delivering superior current handling in 1.6×1.6mm footprint. Use Value: Delivers 40A surge capacity and ±30kV ESD robustness in <2.6mm² area - enabling compact, sealed designs without sacrificing reliability certification margins. |
Use Scenario: Protecting the secondary-side 20V output of a USB PD AC/DC adapter before it connects to the host device's VBUS input filter. IC Role / Device Role / Timing Role: Final-stage transient limiter ensuring compliance with USB-IF ESD and surge requirements prior to entering the end-product system. Use Value: Guarantees consistent 28V clamping regardless of ambient temperature drift - simplifying safety margin validation for UL/IEC 62368-1 certification testing across environmental chambers. |
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; no flat-clamp behavior; VC rises with temperature and IPP. | Higher clamping voltage reduces design margin for 24V-rated ICs; requires larger derating for industrial temp ranges. | Choose SMAJ22A only if cost is primary constraint and clamping margin >12V is acceptable. |
| TDS2211P | Same functional family and pinout as 1N6127; identical electrical specs and DFN-6 package; Semtech-marked variant with same T22 date-code marking. | No functional difference - direct second-source part with identical performance and layout compatibility. | Select TDS2211P when dual-sourcing or inventory diversification is required without redesign. |
Compared with SMAJ22A and TDS2211P, the 1N6127 delivers identical flat-clamp performance and footprint as TDS2211P but may differ in traceability or packaging configuration; versus SMAJ22A, it provides 8.5V lower clamping at rated current and eliminates thermal derating overhead in wide-temperature deployments.
Availability
1N6127 is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch front-ends, and IoT edge device power rails requiring stable component supply with guaranteed EOS protection performance across temperature and surge current extremes.
Supply support for 1N6127 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 high-performance analog and mixed-signal ICs for power management, protection, and signal integrity.
The 1N6127 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 20–24V power rail protection where flat clamping and temperature stability are mandatory.
FAQ
What is the clamping voltage of the 1N6127 at 40A surge current?
The 1N6127 clamps at 27.5–28V under IEC 61000-4-5 combination waveform (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A peak pulse current. This value is guaranteed across –40°C to +125°C and reflects the device's FET-based constant-clamp architecture, not a fixed VBR + IPP×RDYN relationship.
Is the 1N6127 pin-compatible with the TDS2211P?
Yes, the 1N6127 is functionally and physically identical to the TDS2211P: both use the same DFN-6 1.6×1.6mm package, share identical pin configuration (Pins 1–3 = GND, Pins 4–6 = IN), and meet identical electrical specifications per Semtech's datasheet Rev 2.5. They are interchangeable without PCB modification.
Can the 1N6127 be used on high-speed data lines like USB SuperSpeed differential pairs?
No, the 1N6127 is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on USB 3.x or DisplayPort lanes. For those applications, Semtech recommends low-capacitance TVS devices such as RClamp3371ZC (<0.25pF), which are specified separately in the same USB Type-C protection reference design.
What is the maximum continuous reverse standoff voltage for the 1N6127?
The 1N6127 has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks voltages up to 22V in normal operation with leakage current limited to 600nA at 22V. This matches standard USB PD bus ratings and ensures no unintended conduction during steady-state 20V operation.
Does the 1N6127 require a thermal pad or heatsink for 40A surge handling?
No, the 1N6127 does not require a thermal pad or external heatsink. Its FET-based architecture dissipates surge energy efficiently through the channel rather than the junction, and the datasheet explicitly states "no thermal pad is needed." Layout best practice emphasizes low-inductance grounding via all three GND pins and placement near the protected connector.
1N6127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 56V (Max)
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 108.1V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6127 FAQ
1.How can I place an order for 1N6127 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6127 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 1N6127 reliable?
The price and inventory of 1N6127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6127 is usually 5 days.
3.What payment methods are accepted for 1N6127?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6127 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6127?
1N6127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6127 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 1N6127?
For technical support, including 1N6127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6127 requirements.
6.How does Aetrix verify that 1N6127 is sourced from the original manufacturer or authorized distributors?
All 1N6127 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 1N6127 meets industry standards.
7.What is the process for return or replacement of 1N6127?
All 1N6127 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6127, 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 1N6127 part is unused and in its original packaging.
Return procedure for 1N6127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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