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Semtech Corporation 1N6105A
- Part No.:
- 1N6105A
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6105A.pdf
- Description:
- TVS DIODE 6.9VWM 13.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,516
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Product details
Overview
1N6105A 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 ultra-low 20mΩ dynamic resistance. It protects USB PD, Type-C VBus, and load switch inputs in industrial and IoT equipment.
For engineers reviewing the 1N6105A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, clamping stability across temperature, functional comparison vs. conventional TVS, and real-world use cases in USB Type-C and load switch input protection.
Technical Context
The 1N6105A employs 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-from 24A to 40A and across –40°C to +125°C due to decreasing RDS(on) under surge.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. Its 6-pin DFN package integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3), requiring all pins to be connected for full 40A rating and low-inductance PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for DC power rails and low-speed signal lines; not intended for >100MHz data paths. |
Pinout & Package
1N6105A 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 as energy is dissipated within the FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to maximize surge current handling and minimize clamping rise time. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBus); all three required to achieve rated 40A capability and uniform current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Voltage | 27.5–28V across full 24–40A range and –40°C to +125°C - eliminates derating concerns and simplifies margin analysis for safety-critical designs. |
| FET-Based Surge Conduction | Shunt FET with sub-0.1Ω RDS(on) replaces PN-junction avalanche - avoids thermal runaway and enables repeatable high-current operation without degradation. |
| Low Dynamic Resistance | 20mΩ - reduces voltage overshoot during nanosecond-scale ESD events and improves system-level immunity beyond IEC test levels. |
| High-Energy EFT Immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in motor drives and industrial control interfaces. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines 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 input. Use Value: Maintains clamping at ≤28V across temperature and current-preventing overvoltage damage to sensitive PD controllers where conventional TVS would exceed 38V at 125°C. |
Use Scenario: Safeguarding input pins of industrial-grade load switches (e.g., HS2950P) exposed to lightning-induced surges in remote meters or robotics. IC Role / Device Role / Timing Role: Primary front-end EOS protector absorbing 40A transients before they reach the switch's internal FET gate oxide. Use Value: Keeps clamping voltage below the load switch's absolute maximum input rating, extending reliability in ungrounded or floating systems. |
| IoT Device Power Rail Protection | Storage Device DC Power Input Protection |
Use Scenario: Securing 22V-rated DC input rails in battery-powered IoT gateways operating in electrically noisy environments (e.g., smart building HVAC controls). IC Role / Device Role / Timing Role: Standalone transient suppressor on main power entry point, upstream of DC-DC converters and PMICs. Use Value: Delivers ±30kV ESD and 40A surge protection in <2.56mm² footprint-enabling compact, certified designs without external spark gaps or MOVs. |
Use Scenario: Protecting SATA or NVMe storage module power inputs subjected to hot-plug transients and board-level ESD during rack insertion. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-power suppressor on +12V or +20V supply rail feeding SSD controller and NAND flash. Use Value: Prevents latch-up or gate oxide rupture in storage controllers during field-replaceable unit (FRU) handling, with stable clamping independent of ambient temperature swings. |
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; higher clamping, no constant-voltage behavior. | Lower cost but requires derating above 85°C; unsuitable where clamping must stay ≤28V at full 40A or high temperature. | Select SMAJ22A only for cost-sensitive, low-temperature, low-surge applications where 35.5V clamping is acceptable. |
| TDS2211P | Same die, identical electrical specs and package; 1N6105A is Semtech's alternate ordering code for TDS2211P per official documentation. | No functional difference; used interchangeably in BOMs and schematics. | 1N6105A and TDS2211P are identical devices-choose based on distributor stock or legacy design reference. |
Compared with SMAJ22A, 1N6105A delivers 8.5V lower clamping at rated current and stable performance across temperature, while TDS2211P is a direct form-fit-function match with zero design change required.
Availability
1N6105A is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection, and IoT device power rail hardening requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6105A 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 semiconductors for power management, protection, and signal integrity.
The 1N6105A belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping and temperature insensitivity are critical.
FAQ
What is the exact package type and dimensions of the 1N6105A?
The 1N6105A uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed copper terminals-no thermal pad required. Pins 1–3 are GND; pins 4–6 are IN. All six pins must be soldered to achieve full 40A surge rating and optimal low-inductance grounding per Semtech's layout guidelines.
How does the 1N6105A differ from a standard TVS diode like SMAJ22A?
The 1N6105A uses an active FET-based architecture with a precision trigger circuit, delivering constant 27.5–28V clamping from 24A to 40A and across –40°C to +125°C. In contrast, SMAJ22A is a passive PN-junction TVS with rising clamping (35.5V at 12.3A) and significant temperature-dependent derating-making 1N6105A superior for thermally demanding or high-surge applications.
Is the 1N6105A suitable for protecting USB Type-C VBus lines operating at 20V?
Yes-the 1N6105A has a 22V working voltage and clamps at ≤28V under 40A surge, well below the 30–36V damage threshold of most USB PD controllers. Its flat clamping curve ensures consistent protection during hot-plug events and ESD exposure, making it ideal for USB Type-C VBus protection as confirmed in Semtech's application diagrams.
What is the maximum ESD level the 1N6105A can withstand per IEC 61000-4-2?
The 1N6105A withstands ±30kV contact discharge and ±30kV air discharge per IEC 61000-4-2-exceeding Level 4 requirements. This rating is validated across its full operating temperature range and applies to the combined input terminals (pins 4–6), enabling robust front-end ESD protection for connectors and cables in industrial and consumer systems.
Does the 1N6105A require special PCB layout considerations?
Yes-Semtech specifies that all three GND pins (1–3) and all three IN pins (4–6) must be connected with short, wide traces and multiple vias to ground plane. The device must be placed adjacent to the protected connector to minimize parasitic inductance. Failure to follow these guidelines degrades surge performance and may prevent achieving the rated 40A capability.
1N6105A 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):
- 6.9V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 37.3A
- 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
1N6105A FAQ
1.How can I place an order for 1N6105A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6105A 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 1N6105A reliable?
The price and inventory of 1N6105A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6105A is usually 5 days.
3.What payment methods are accepted for 1N6105A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6105A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6105A?
1N6105A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6105A 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 1N6105A?
For technical support, including 1N6105A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6105A requirements.
6.How does Aetrix verify that 1N6105A is sourced from the original manufacturer or authorized distributors?
All 1N6105A 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 1N6105A meets industry standards.
7.What is the process for return or replacement of 1N6105A?
All 1N6105A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6105A, 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 1N6105A part is unused and in its original packaging.
Return procedure for 1N6105A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6105A Tags
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