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Semtech Corporation 1N6139
- Part No.:
- 1N6139
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6139.pdf
- Description:
- TVS DIODE 5.7VWM 11.8VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,786
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed to protect 22V-rated I/O or power lines against high-energy electrical overstress (EOS), including ±30kV IEC 61000-4-2 ESD, 40A (8/20μs) surge per IEC 61000-4-5, and ±4kV EFT per IEC 61000-4-4. It uses a surge-rated FET with precision trigger circuitry to deliver near-constant clamping voltage of 27.5–28V across 24–40A pulse range and −40°C to +125°C operation. It is deployed in USB Type-C PD bus protection and load switch input hardening.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include its 22V working voltage, sub-20mΩ dynamic resistance, 175pF junction capacitance at 22V, DFN 1.6×1.6mm 6-lead package, and stable clamping performance under temperature and current stress-critical for industrial, USB PD, and IoT interface protection.
Technical Context
The TDS2211P implements an active shunt architecture: a precision trigger circuit detects overvoltage events and activates a low-RDS(on) surge FET, bypassing transients to ground. Unlike passive TVS diodes, its clamping voltage remains nearly flat (27.5–28V) from 24A to 40A due to decreasing FET on-resistance under higher current.
This architecture delivers superior thermal stability: clamping voltage varies less than 0.5V across −40°C to +125°C, while peak pulse current capability remains rated up to 40A regardless of ambient temperature-enabling robust protection in thermally demanding industrial and automotive-adjacent applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 22 V - Maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage (VC) | 27.5–28 V at 40A (8/20μs + 1.2/50μs combo wave, RS = 2Ω) - Ensures downstream 24V-tolerant ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - Supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) on unsymmetrical lines. |
| Dynamic Resistance (RDYN) | 20 mΩ - Enables flat clamping response; contributes to <0.8V voltage rise from 1A to 40A surge current. |
| Junction Capacitance (CJ) | 175 pF at 22V, 1MHz - Low enough for 22V bus protection without signal integrity degradation on moderate-speed lines. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Eliminates need for secondary ESD stages in USB-C and industrial I/O interfaces. |
| Operating Temperature | −40°C to +125°C - Validated performance across full industrial temperature range without derating. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish. Exposed pad not present; all six terminals are signal/ground pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current sharing and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input; tied together externally to connect to 22V bus or power rail; all three required for full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Active FET-based clamping | Replaces passive TVS with voltage-controlled shunt switch, enabling <0.5V clamping variation across full 24–40A pulse range. |
| Temperature-stable clamping | Clamping voltage drift ≤0.3V from −40°C to +125°C - eliminates thermal derating calculations for industrial designs. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) supports repeated lightning-surge events without parametric shift or failure. |
| Low-leakage protection | 600 nA max reverse leakage at 22V - avoids loading on 22V rails in always-on IoT and metering applications. |
| Compact board footprint | 1.6 mm × 1.6 mm area - saves >60% PCB space vs. comparable discrete TVS + RC snubber solutions. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Hardening |
|---|---|
|
Use Scenario: Protecting the VBus line of a USB Type-C port supporting up to 20V/5A PD negotiation, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Active shunt suppressor placed between VBus and GND, triggered within nanoseconds of overvoltage detection to clamp transients before reaching PD controller. Use Value: Maintains clamping at 27.5–28V across temperature and current-ensuring PD controller (e.g., STUSB4500, CYPD3177) stays within 24V absolute maximum rating even at 125°C ambient. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P, TPS229xx) in remote meters, PLC I/O modules, and robotic power distribution units. IC Role / Device Role / Timing Role: Primary EOS barrier upstream of load switch FET, limiting voltage stress on internal gate oxide and drain-source junction during lightning-induced surges. Use Value: Prevents catastrophic failure of load switch by holding clamping voltage below 30V-well under typical 35–40V breakdown limits of integrated high-side FETs. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Auxiliary Supply Protection |
|
Use Scenario: Securing 22V auxiliary rails powering cellular modems, GNSS receivers, or sensor fusion hubs in outdoor-connected devices. IC Role / Device Role / Timing Role: Single-component transient diverter replacing multi-stage TVS + ferrite + capacitor networks on compact edge node PCBs. Use Value: Delivers 40A surge immunity and ±30kV ESD in 2.56 mm² footprint-reducing BOM count and layout complexity while meeting IEC 61000-4-x immunity requirements. |
Use Scenario: Protecting 22V backup or auxiliary supplies in NVMe SSD enclosures, SAS expanders, and enterprise HDD backplanes subject to hot-plug transients. IC Role / Device Role / Timing Role: Fast-acting shunt device placed at connector entry point to absorb insertion spikes and cable discharge events before reaching PMIC or LDO regulators. Use Value: 175pF capacitance avoids resonance issues on 22V supply lines; stable clamping prevents brownout or latch-up in storage controller power domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Passive unidirectional TVS diode; 38V clamping at 24A (vs. 28V); 1.5Ω dynamic resistance; no temperature compensation. | Higher clamping voltage risks exceeding 24V IC limits at elevated temperature; requires larger layout area and additional thermal margining. | Select only if cost sensitivity outweighs clamping performance and thermal stability requirements. |
| SP1003-220K | Bi-directional polymer ESD suppressor; 22V working voltage; 30V clamping at 16A; limited to 16A peak pulse (vs. 40A). | Suitable for ESD-only zones (e.g., USB CC lines) but insufficient for IEC 61000-4-5 surge; lower energy handling restricts use to low-risk environments. | Use where ESD dominates threat model and surge exposure is absent or externally mitigated. |
Compared with SMAJ22A and SP1003-220K, the TDS2211P uniquely combines 40A surge rating, 27.5–28V flat clamping, and −40°C to +125°C stability-making it the only option qualified for high-reliability 22V bus protection in USB PD, industrial load switching, and outdoor IoT deployments.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, IoT edge node power rails, storage device auxiliary supplies, and USB-C-enabled notebooks requiring stable component supply and long-term design-in support.
Supply support for TDS2211P 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 TDS family was developed to replace conventional TVS diodes in high-reliability 22V–36V power and data line protection, addressing clamping instability and thermal derating limitations of passive solutions.
FAQ
What is the primary protection function of the TDS2211P?
The TDS2211P functions as an active transient diverting suppressor that protects 22V-rated power or I/O lines from electrical overstress events-including ±30kV ESD (IEC 61000-4-2), 40A surge (IEC 61000-4-5), and ±4kV EFT (IEC 61000-4-4). Unlike passive TVS diodes, the TDS2211P uses a triggered FET to achieve near-constant 27.5–28V clamping across its full current and temperature range, making it ideal for protecting sensitive 24V-tolerant ICs in USB PD and industrial applications.
How does the TDS2211P differ from standard TVS diodes in clamping behavior?
The TDS2211P differs fundamentally from standard TVS diodes by using an actively triggered FET instead of a passive PN junction. Its clamping voltage remains stable at 27.5–28V from 24A to 40A and across −40°C to +125°C, whereas a typical TVS like SMAJ22A exhibits rising clamping (e.g., ~38V at 24A, worse at high temperature) due to fixed dynamic resistance. This stability eliminates thermal derating and ensures consistent protection margins for 24V-rated components in the TDS2211P's protected domain.
Can the TDS2211P be used on bidirectional data lines such as USB DP/DM?
No-the TDS2211P is designed exclusively for unidirectional 22V power or single-ended I/O line protection (e.g., VBus, load switch input). Its pin configuration (IN/GND only) and 22V working voltage make it unsuitable for low-voltage, bidirectional, or high-speed differential data lines like USB DP/DM, which require sub-0.3pF, bidirectional ESD suppressors such as RClamp3371ZC. For DP/DM protection, the TDS2211P must be paired with dedicated low-capacitance TVS devices-not substituted directly.
What is the recommended PCB layout for optimal performance of the TDS2211P?
For optimal performance, place the TDS2211P as close as possible to the protected connector or entry point. Connect all three IN pins (4, 5, 6) together with a short, wide trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid stubs or splits in the IN or GND paths to minimize parasitic inductance-critical for maintaining nanosecond response and full 40A surge capability. Do not add thermal pads or copper pours beneath the device body, as energy is dissipated internally.
Is the TDS2211P compliant with RoHS and halogen-free standards?
Yes, the TDS2211P is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free. The device is supplied in tape-and-reel packaging (3,000 units per 7-inch reel), with marking code "T22" followed by a two-digit date code. Compliance documentation is available through Semtech's official product page and authorized distributors.
1N6139 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):
- 5.7V (Max)
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.8V
- Current - Peak Pulse (10/1000µs):
- 127.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6139 FAQ
1.How can I place an order for 1N6139 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6139 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 1N6139 reliable?
The price and inventory of 1N6139 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6139 is usually 5 days.
3.What payment methods are accepted for 1N6139?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6139 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6139?
1N6139 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6139 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 1N6139?
For technical support, including 1N6139 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6139 requirements.
6.How does Aetrix verify that 1N6139 is sourced from the original manufacturer or authorized distributors?
All 1N6139 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 1N6139 meets industry standards.
7.What is the process for return or replacement of 1N6139?
All 1N6139 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6139, 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 1N6139 part is unused and in its original packaging.
Return procedure for 1N6139:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6139 Tags
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