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Semtech Corporation 1N3614
- Part No.:
- 1N3614
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
1N3614.pdf
- Description:
- DIODE GEN PURP 800V 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,655
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Product details
Overview
1N3614 from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection on single 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 20mΩ dynamic resistance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the 1N3614 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and direct alternatives for 22V bus protection design.
Technical Context
The 1N3614 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transients to ground. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions.
It operates with a 22V reverse stand-off voltage (VRWM), 25–27.9V breakdown (VBR), and maintains stable 27.5–28V clamping up to 40A and across –40°C to +125°C ambient - enabled by low 20mΩ dynamic resistance and 175pF junction capacitance at 22V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during 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 response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact. |
Pinout & Package
1N3614 is housed in a RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm, with exposed thermal pad not required - energy dissipation occurs within the integrated FET structure.
| 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 handling and minimize inductance. |
| Pins 4, 5, 6 | IN | Protected line input - connects directly to VBus or data/power line requiring 22V EOS protection; parallel connection improves surge sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 1–40A surge range - eliminates need for derating at high current or temperature. |
| FET-based shunt architecture | Replaces traditional TVS junction with low-RDS(on) MOSFET - reduces thermal stress and improves reliability under repeated surges. |
| Temperature-stable performance | Clamping voltage variation <0.5V from –40°C to +125°C - enables robust operation in industrial and automotive under-hood environments. |
| Low dynamic resistance | 20mΩ - limits IR drop during surge, ensuring precise voltage limiting even at 40A peak. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBus lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed adjacent to the Type-C receptacle, clamping transients before they reach the PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - avoids overvoltage damage to sensitive PD ICs where standard TVS would exceed 35V. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics against 1kV/42Ω surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: High-current shunt protector that limits voltage across the load switch's internal FET drain-source during surge events. Use Value: Prevents gate oxide rupture and latch-up in downstream load switches by holding clamping voltage well below their absolute maximum VDS rating. |
| IoT Device Power Rail Protection | Notebook/Tablet DC Input Protection |
|
Use Scenario: Securing 22V-capable power inputs in battery-powered IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-line transient suppressor on main DC input rail, replacing bulkier multi-device TVS arrays. Use Value: 1.6mm × 1.6mm footprint saves >60% board area vs. discrete TVS + series resistor solutions while delivering superior clamping consistency. |
Use Scenario: Protecting 20V-class adapter inputs in ultrabooks and tablets against accidental AC line transients and ESD during charging port insertion. IC Role / Device Role / Timing Role: Standalone 22V-rated suppressor on the main DC-in path, upstream of buck converters and battery charge management ICs. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (±30kV) and IEC 61000-4-5 Level 3 (±1kV) without compromising thin-profile mechanical design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 22V single-line EOS protection 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); VBR = 24.4–26.9V. | Higher clamping voltage limits use in 22V systems near IC damage thresholds; less stable over temperature. | Select when cost sensitivity outweighs clamping precision and thermal stability requirements. |
| TDS2211P | Same family, identical specs and package - confirmed functional and pin-compatible replacement per Semtech documentation. | No change in layout, BOM, or performance; direct drop-in for 1N3614 in new designs or rework. | Preferred for new designs requiring guaranteed supply continuity and identical performance certification. |
Compared with SMAJ22A, 1N3614 delivers 8V lower clamping at rated current and stable performance across temperature - critical for 22V PD controllers. Compared with TDS2211P, 1N3614 is functionally identical and validated as a direct replacement in production designs.
Availability
1N3614 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT device power rails requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N3614 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 analog and mixed-signal ICs for precision protection, sensing, and connectivity.
The 1N3614 belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications with superior clamping stability and surge endurance.
FAQ
What is the exact package type and dimensions of the 1N3614?
The 1N3614 uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad not required. Pins 1–3 are GND; pins 4–6 are IN. All six pins must be soldered to achieve full 40A surge rating and minimal parasitic inductance - confirmed in Semtech's official land pattern and layout guidelines.
Does the 1N3614 meet IEC 61000-4-5 surge immunity standards?
Yes, the 1N3614 is rated for 40A peak pulse current (8/20μs waveform) and ±1kV (1.2/50μs voltage, 8/20μs current, RS = 42Ω) per IEC 61000-4-5 - satisfying Level 3 and Level 4 industrial surge immunity requirements when properly laid out per Semtech's PCB recommendations.
How does the clamping voltage of the 1N3614 behave across temperature and current?
The 1N3614 maintains 27.5–28V clamping from –40°C to +125°C and across 1–40A peak pulse current - verified in Semtech's typical characteristics plots. This stability results from its FET-based shunt architecture, unlike TVS diodes whose clamping rises linearly with current and temperature.
Can the 1N3614 replace standard TVS diodes like SMAJ22A in existing designs?
The 1N3614 can replace SMAJ22A in 22V applications where tighter clamping and temperature stability are required - but it is not pin-compatible due to different package (DFN-6 vs. DO-214AC) and terminal configuration. Layout redesign is necessary; however, its 27.5–28V clamping offers significant margin over SMAJ22A's 35.1V at 12.3A.
Is the 1N3614 suitable for protecting USB Type-C VBus lines with Power Delivery?
Yes, the 1N3614 is explicitly recommended by Semtech for USB Type-C PD VBus protection up to 22V. Its 27.5–28V clamping ensures PD controllers remain within safe operating voltage during ±30kV ESD and 40A surges - making it a core component in reference designs such as Figure 4 of the official datasheet.
1N3614 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 500 nA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N3614 FAQ
1.How can I place an order for 1N3614 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3614 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 1N3614 reliable?
The price and inventory of 1N3614 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3614 is usually 5 days.
3.What payment methods are accepted for 1N3614?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3614 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3614?
1N3614 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3614 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 1N3614?
For technical support, including 1N3614 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3614 requirements.
6.How does Aetrix verify that 1N3614 is sourced from the original manufacturer or authorized distributors?
All 1N3614 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 1N3614 meets industry standards.
7.What is the process for return or replacement of 1N3614?
All 1N3614 units undergo pre-shipment inspection (PSI). If there is an issue with 1N3614, 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 1N3614 part is unused and in its original packaging.
Return procedure for 1N3614:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N3614 Tags
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