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Semtech Corporation 1N6104A
- Part No.:
- 1N6104A
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6104A.pdf
- Description:
- TVS DIODE 6.2VWM 12.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,250
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Product details
Overview
1N6104A from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated DC 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 PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6104A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, clamping stability across temperature and current, and real-world implementation insights for surge-critical bus protection.
Technical Context
The 1N6104A 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 conventional 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 (VRWM) of 22V, breakdown voltage (VBR) of 25–27.9V at 1mA, and ultra-low junction capacitance (175pF at 22V/1MHz), enabling use on high-speed power rails without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage before activation; matches USB PD 20V nominal + margin. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., load switches, PD controllers) remain below damage thresholds during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards without external shielding. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough to avoid loading 22V power rails while maintaining effective surge energy diversion. |
Pinout & Package
1N6104A is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required). All six terminals are electrically grouped: three input pins and three ground pins, requiring parallel connection for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Low-inductance return path for surge current; all three must be connected via multiple vias to inner ground plane for rated 40A performance. |
| Pins 4, 5, 6 | Input (IN) | High-side connection to protected line (e.g., VBus); all three pins carry equal surge current share and must be shorted together externally. |
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 diodes. |
| Temperature-stable protection | Clamping holds 27.5–28V from –40°C to +125°C - removes thermal derating calculations for industrial ambient conditions. |
| Ultra-low dynamic resistance | 20mΩ measured between 1A–40A - reduces IR drop and localized heating during multi-pulse surge events. |
| DFN-6 space efficiency | 1.6mm × 1.6mm footprint - saves >60% board area versus SO-8 or SOT-23 alternatives delivering comparable 40A surge rating. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines in USB Type-C ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt device placed directly at connector, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 27.5V clamping at 40A and 125°C - prevents overvoltage damage to USB PD ICs rated for ≤28V absolute max. |
Use Scenario: Safeguarding enable and input pins of high-side load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of load switches during 1kV/42Ω IEC 61000-4-5 surges by holding clamp <28V. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT gateways exposed to ESD during field servicing or cable coupling. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks, reducing BOM count and PCB area. Use Value: Delivers ±30kV ESD and 40A surge protection in 2.56mm² - enables compact, sealed enclosures without ventilation compromises. |
Use Scenario: Hardening 20V adapter input paths in ultrabooks and tablets against accidental AC mains coupling or ESD from user ports. IC Role / Device Role / Timing Role: First-line defense upstream of DC-DC converters and battery charge management ICs. Use Value: 175pF capacitance avoids ripple amplification or startup instability in high-frequency buck regulators downstream. |
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 12.3A (8/20μs); higher dynamic resistance (~0.5Ω); VRWM = 22V. | Limited to lower-energy surges; clamping rises to ~42V at 40A; requires thermal derating above 85°C. | Select SMAJ22A only for cost-sensitive, low-surge environments where 40A capability and temperature stability are not required. |
| TDS2211P | Same die, same DFN-6 package, identical electrical specs - Semtech's official replacement part number for 1N6104A per product change notice. | No functional or layout difference; fully interchangeable with 1N6104A in existing designs. | Prefer TDS2211P for new designs: it supersedes 1N6104A with updated documentation, extended lifecycle support, and guaranteed availability. |
Compared with SMAJ22A, 1N6104A delivers 40A surge handling and stable 27.5V clamping across temperature-critical for USB PD and industrial loads-while TDS2211P is its direct, documented successor with identical performance and enhanced supply assurance.
Availability
1N6104A is available at Aetrix Electronics and suitable for USB Power Delivery interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for 1N6104A 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 1N6104A belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where flat clamping, temperature stability, and high surge current are mandatory.
FAQ
What is the maximum continuous operating voltage for the 1N6104A?
The 1N6104A has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC without triggering. This makes it suitable for 20V USB PD systems with safety margin. Operation above 22V risks premature conduction and potential damage to the 1N6104A or downstream components.
Does the 1N6104A require a thermal pad on the PCB?
No, the 1N6104A does not require an internal thermal pad. Its DFN-6 package dissipates surge energy through the copper traces and ground vias-not junction-to-case conduction. Per Semtech's layout guidelines, connecting all three GND pins (1, 2, 3) to a solid ground plane via multiple vias is sufficient for full 40A rating without added thermal relief.
How does the 1N6104A differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), the 1N6104A uses a triggered FET architecture that maintains clamping at 27.5–28V from 24A to 40A. This eliminates the need to overspecify IPP just to meet voltage limits-a key advantage in space-constrained 1N6104A designs.
Can the 1N6104A be used on high-speed data lines like USB SuperSpeed?
No-the 1N6104A is not intended for high-speed data lines. With 175pF junction capacitance, it would severely degrade signal integrity on differential pairs. For USB SS, DP/DM, or CC lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) or uClamp2411ZA. The 1N6104A is strictly for 22V power or low-speed I/O protection.
Is the 1N6104A pin-compatible with the TDS2211P?
Yes-the 1N6104A and TDS2211P share identical DFN-6 package dimensions, pin configuration (Pins 1–3 = GND, Pins 4–6 = IN), and electrical specifications. Semtech documents TDS2211P as the direct replacement for 1N6104A; no PCB changes or layout modifications are needed when migrating to TDS2211P in new or legacy 1N6104A designs.
1N6104A 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):
- 6.2V
- Voltage - Breakdown (Min):
- 7.79V
- Voltage - Clamping (Max) @ Ipp:
- 12.1V
- Current - Peak Pulse (10/1000µs):
- 41.3A
- 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
1N6104A FAQ
1.How can I place an order for 1N6104A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6104A 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 1N6104A reliable?
The price and inventory of 1N6104A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6104A is usually 5 days.
3.What payment methods are accepted for 1N6104A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6104A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6104A?
1N6104A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6104A 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 1N6104A?
For technical support, including 1N6104A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6104A requirements.
6.How does Aetrix verify that 1N6104A is sourced from the original manufacturer or authorized distributors?
All 1N6104A 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 1N6104A meets industry standards.
7.What is the process for return or replacement of 1N6104A?
All 1N6104A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6104A, 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 1N6104A part is unused and in its original packaging.
Return procedure for 1N6104A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6104A Tags
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