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Semtech Corporation 1N6139AUS
- Part No.:
- 1N6139AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6139AUS.pdf
- Description:
- TVS DIODE 5.7VWM 11.2VC
- Quantity:
- Payment:
- Shipping:
Inventory:5,197
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Product details
Overview
1N6139AUS from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power 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 Type-C power delivery buses, load switch inputs, and industrial interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the 1N6139AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world USB PD and load switch protection use cases, and validated alternative parts with documented functional trade-offs.
Technical Context
The 1N6139AUS employs 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A peak pulse currents due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with stable 27.5–28V clamping up to 40A, 175pF junction capacitance at 22V, and <600nA reverse leakage - enabling robust protection in thermally demanding industrial and portable applications without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without false triggering. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 30V damage threshold of common USB PD controllers and load switches. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and IoT gateways. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements for connector-facing protection. |
| Dynamic Resistance | 20mΩ - enables low-voltage overshoot during fast transients, minimizing stress on downstream silicon. |
| Junction Capacitance | 175pF at 22V - compatible with medium-speed data/power lines (e.g., USB PD CC/SBU, load switch enable); not for USB SS lanes. |
| Operating Temp | −40°C to +125°C - supports extended-temperature industrial, automotive under-hood, and outdoor IoT deployments. |
Pinout & Package
1N6139AUS 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 - energy is dissipated within the integrated FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize 40A capability and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); all three pins are internally paralleled for low-inductance, high-current path to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across full 24–40A range - eliminates need for over-spec'ing IPP to meet voltage limits. |
| FET-based shunt topology | Replaces traditional TVS junction with low-RDS(on) MOSFET - reduces thermal runaway risk and improves lifetime under repeated surges. |
| Temperature-stable clamping | Clamps at 27.5–28V from −40°C to +125°C - removes derating calculations required for standard TVS devices. |
| Low dynamic resistance | 20mΩ measured between 1A–40A - ensures minimal voltage overshoot during sub-100ns ESD events. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports multi-kV lightning-induced surges per IEC 61000-4-5 with RS = 2Ω. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V USB PD bus against connector-level ESD and system-level surges during hot-plug events. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at Type-C receptacle, clamping transients before they reach PD controller or DC-DC converter. Use Value: Maintains 27.5V clamping at 40A and 125°C - avoids overvoltage damage to sensitive PD ICs that fail above 30V. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) exposed to lightning-induced surges in remote meters or robotics. IC Role / Device Role / Timing Role: Front-end transient clamp on VIN rail, limiting voltage seen by internal switch FET and OVP circuitry. Use Value: Prevents latch-up or gate oxide rupture in load switches by holding clamping voltage below their absolute maximum ratings (typically 30–36V). |
| IoT Gateway Power Bus Protection | USB-C Docking Station VBUS Line |
Use Scenario: Securing 22V auxiliary power rails in cellular/Wi-Fi IoT gateways subject to EFT bursts and indirect lightning coupling. IC Role / Device Role / Timing Role: Single-device solution for 22V rail protection, replacing multi-component TVS+RC networks. Use Value: Delivers 4kV EFT immunity (IEC 61000-4-4) and ±30kV ESD without signal distortion or leakage-induced battery drain. |
Use Scenario: Protecting shared VBUS line in multi-port USB-C docking stations handling up to 100W power delivery. IC Role / Device Role / Timing Role: High-current surge clamp on main power distribution node, coordinated with low-capacitance TVS on CC/DP/DM lines. Use Value: Enables compact layout with 1.6×1.6mm footprint - saves >60% board area versus discrete TVS arrays while maintaining 40A surge rating. |
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; 35.1V clamping at 12.7A (8/20μs); higher dynamic resistance (~0.5Ω); clamping rises with current/temp. | Limited to lower-energy surges; requires larger PCB area; unsuitable for sustained 40A or high-temp operation. | Choose SMAJ22A only for cost-sensitive, low-surge environments where 22V working voltage suffices but 27.5V clamping is acceptable. |
| TDS2211P | Same die, identical specs, and pinout as 1N6139AUS - confirmed by Semtech documentation and marking code cross-reference (T22 prefix). | No functional difference; TDS2211P is the manufacturer's official part number; 1N6139AUS is a legacy or alternate ordering code. | Select TDS2211P for new designs to ensure long-term supply continuity and access to latest Semtech support resources. |
Compared with SMAJ22A, 1N6139AUS delivers 40A surge handling and temperature-stable clamping - critical for USB PD and industrial systems - while TDS2211P is a direct functional and mechanical match, differing only in part numbering convention and packaging logistics.
Availability
1N6139AUS is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection circuits, and IoT gateway power bus designs requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1N6139AUS 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 precision sensing, protection, and connectivity.
The 1N6139AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace conventional TVS diodes in high-reliability 22V power and interface protection applications where clamping stability under surge and temperature stress is non-negotiable.
FAQ
What is the exact package type and dimensions of the 1N6139AUS?
The 1N6139AUS uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed copper pads for pins 1–3 (GND) and pins 4–6 (IN). It has no thermal pad, conforms to JEDEC MO-229 standards, and is marked with "T22" followed by date code. The land pattern requires symmetric solder paste stencil openings and multiple vias under GND pins for optimal surge current handling.
Does the 1N6139AUS require external bias or control signals to operate?
No, the 1N6139AUS is fully passive and self-triggering. It contains an integrated precision trigger circuit and surge-rated FET - no external voltage, resistor, or enable signal is needed. It activates automatically when transient voltage exceeds its breakdown threshold (~25–27.9V), making it drop-in compatible with existing TVS placements.
How does the clamping performance of 1N6139AUS compare to standard TVS diodes at elevated temperatures?
Unlike standard TVS diodes whose clamping voltage increases significantly with temperature, the 1N6139AUS maintains 27.5–28V clamping from −40°C to +125°C. This stability arises from its FET-based architecture - where RDS(on) decreases with temperature - eliminating thermal derating and ensuring consistent protection in hot industrial enclosures or automotive under-hood locations.
Can the 1N6139AUS be used on high-speed data lines like USB SuperSpeed or PCIe?
No, the 1N6139AUS is not suitable for high-speed data lines. Its 175pF junction capacitance would severely degrade signal integrity on USB 3.x, PCIe, or HDMI lanes. It is intended exclusively for power rails (VBUS, VIN) and medium-speed control lines (CC, SBU, enable) where capacitance is less critical - low-capacitance TVS like RClamp3371ZC must be used for SuperSpeed lanes.
Is the 1N6139AUS RoHS compliant and halogen free?
Yes, the 1N6139AUS is fully RoHS compliant and halogen free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin. Compliance documentation, including material declarations and test reports, is available through Semtech's quality portal and Aetrix Electronics' technical support team.
1N6139AUS 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):
- 5.7V (Max)
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6139AUS FAQ
1.How can I place an order for 1N6139AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6139AUS 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 1N6139AUS reliable?
The price and inventory of 1N6139AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6139AUS is usually 5 days.
3.What payment methods are accepted for 1N6139AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6139AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6139AUS?
1N6139AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6139AUS 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 1N6139AUS?
For technical support, including 1N6139AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6139AUS requirements.
6.How does Aetrix verify that 1N6139AUS is sourced from the original manufacturer or authorized distributors?
All 1N6139AUS 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 1N6139AUS meets industry standards.
7.What is the process for return or replacement of 1N6139AUS?
All 1N6139AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6139AUS, 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 1N6139AUS part is unused and in its original packaging.
Return procedure for 1N6139AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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