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Semtech Corporation 1N3613
- Part No.:
- 1N3613
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
1N3613.pdf
- Description:
- DIODE GEN PURP 600V 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,476
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Product details
Overview
1N3613 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 20mΩ dynamic resistance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the 1N3613 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specifications, DFN-6 package layout guidance, clamping stability across temperature, and real-world use cases in USB PD and industrial bus protection where low-voltage clamping under surge conditions is critical.
Technical Context
The 1N3613 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 conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) across 24–40A IPP and −40°C to +125°C due to decreasing RDS(on) under surge.
It operates with a 22V reverse stand-off voltage (VRWM), 25–27.9V breakdown (VBR), and 175pF junction capacitance at 22V/1MHz - enabling robust protection without signal integrity compromise on medium-speed buses like USB PD VBUS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V reverse stand-off - matches nominal USB PD VBUS up to 20V with margin for transients. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below typical 30V damage threshold of load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Class 4 requirements for handheld and portable devices. |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise under surge, enabling stable clamping independent of current magnitude. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for DC/low-frequency power rails; not suitable for high-speed data lines. |
Pinout & Package
1N3613 is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad-less construction. All six terminals are surface-mount; no thermal pad required as energy is dissipated within the FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., USB PD VBUS); parallel connection ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 24–40A IPP and −40°C to +125°C - eliminates derating uncertainty in thermal design. |
| FET-based shunt topology | Replaces pn-junction TVS with <0.1Ω RDS(on) - reduces clamping voltage by ~11V vs. comparable TVS at 125°C (e.g., 27V vs. 38V). |
| Low dynamic resistance | 20mΩ measured between 1A–40A - enables predictable voltage drop and precise overvoltage limiting during surge events. |
| High-energy ESD rating | ±30kV contact/air per IEC 61000-4-2 - supports ruggedized interfaces in consumer and industrial IoT endpoints. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBUS line of a USB Type-C port supporting up to 20V/5A PD negotiation against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting surge current to ground before it reaches the PD controller or buck converter. Use Value: Maintains 27.5–28V clamping across full temperature range - prevents overvoltage damage to 30V-rated PD ICs even at 125°C ambient. |
Use Scenario: Front-end protection for high-side load switches (e.g., HS2950P) in remote meters, robotics, or factory automation systems exposed to 40A/8/20μs surges. IC Role / Device Role / Timing Role: Primary EOS clamp on VIN rail, limiting transient voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: 20mΩ dynamic resistance ensures sub-1V overshoot during fast-rising transients - avoids latch-up or permanent failure of sensitive control ICs downstream. |
| IoT Device Power Rail Protection | Storage Device DC Bus Protection |
Use Scenario: Securing 22V-rated backup power inputs on edge-node gateways or battery-backed sensors subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing traditional TVS arrays, providing repeatable clamping without degradation after multiple 4kV EFT hits. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and stable 27.5V clamping ensure uninterrupted operation during electromagnetic noise exposure in dense wireless environments. |
Use Scenario: Protecting 22V auxiliary rails in NVMe SSD enclosures or enterprise HDD backplanes against hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-power suppressor on DC supply line - isolates storage controller from bus disturbances without affecting power sequencing. Use Value: 1120W peak pulse power rating sustains multi-millisecond surges common in server rack power distribution, avoiding thermal runaway. |
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 drift with temperature and current. | Limited to lower-energy surges; requires larger derating margin for 40A/8/20μs events and high-temp operation. | Choose SMAJ22A only if cost sensitivity outweighs clamping stability and surge margin requirements. |
| TPD2E007DRYR | Low-capacitance (7pF) dual-channel ESD protector; 22V VRWM, but rated only for 4A IPP and ±8kV ESD - not a surge suppressor. | Designed for high-speed data lines (e.g., USB 2.0 D+/D−), not power rail protection. | Use TPD2E007DRYR for signal-line ESD only; never as a substitute for 1N3613 on VBUS or load switch inputs. |
Compared with SMAJ22A and TPD2E007DRYR, the 1N3613 delivers superior surge handling (40A vs. 12.3A/4A), thermally stable clamping (±0.5V vs. >5V drift), and true EOS-grade protection - making it the sole option among the three qualified for USB PD VBUS and industrial load switch front-end use.
Availability
1N3613 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 guaranteed surge performance compliance.
Supply support for 1N3613 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 sensing, protection, and signal integrity.
The 1N3613 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where constant clamping and temperature stability are mandatory.
FAQ
What is the maximum operating temperature range for the 1N3613?
The 1N3613 is rated for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range - varying by less than 0.5V from −40°C to +125°C at 40A surge - unlike standard TVS diodes whose clamping rises significantly with temperature. This makes the 1N3613 especially suitable for under-hood automotive modules or industrial controllers without active cooling.
Does the 1N3613 require a thermal pad on the PCB?
No, the 1N3613 does not require a thermal pad. Its DFN-6 package (1.6mm × 1.6mm × 0.55mm) dissipates surge energy internally via the shunt FET structure rather than through junction-to-case conduction. The datasheet explicitly states "no thermal pad is needed," and layout guidelines emphasize low-inductance grounding via multiple vias instead of thermal copper.
Can the 1N3613 be used on high-speed data lines like USB 3.x or PCIe?
No, the 1N3613 is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on SuperSpeed lanes (USB 3.x, PCIe Gen 3+). It is intended exclusively for DC or low-frequency power rails such as USB PD VBUS, load switch inputs, or 22V auxiliary supplies - where capacitance is non-critical and surge energy absorption is paramount.
How does the 1N3613 differ from a standard TVS diode in clamping behavior?
The 1N3613 uses a triggered FET shunt instead of a pn-junction avalanche structure. As surge current increases, its RDS(on) decreases, resulting in nearly constant clamping voltage (27.5–28V) across 1–40A. In contrast, a standard TVS exhibits linear clamping rise: VC = VBR + IPP × RDYN. At 40A, the 1N3613 clamps ~11V lower than a typical 22V TVS at 125°C - a critical advantage for protecting 30V-rated ICs.
Is the 1N3613 RoHS and halogen-free compliant?
Yes, the 1N3613 is fully RoHS/WEEE compliant and halogen-free. Its DFN-6 package uses lead-free solderable terminations, UL 94V-0 molding compound, and meets Semtech's environmental policy for restricted substances. Marking code "T22" and date code appear laser-etched on the top surface, confirming full compliance traceability.
1N3613 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):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N3613 FAQ
1.How can I place an order for 1N3613 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3613 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 1N3613 reliable?
The price and inventory of 1N3613 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3613 is usually 5 days.
3.What payment methods are accepted for 1N3613?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3613 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3613?
1N3613 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3613 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 1N3613?
For technical support, including 1N3613 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3613 requirements.
6.How does Aetrix verify that 1N3613 is sourced from the original manufacturer or authorized distributors?
All 1N3613 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 1N3613 meets industry standards.
7.What is the process for return or replacement of 1N3613?
All 1N3613 units undergo pre-shipment inspection (PSI). If there is an issue with 1N3613, 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 1N3613 part is unused and in its original packaging.
Return procedure for 1N3613:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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