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Semtech Corporation JAN1N4245
- Part No.:
- JAN1N4245
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JAN1N4245.pdf
- Description:
- DIODE GEN PURP 200V 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,273
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Product details
Overview
JAN1N4245 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 PD, Type-C, and industrial load switch input protection.
For engineers reviewing the JAN1N4245 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection where conventional TVS diodes exhibit rising clamping voltage with current or temperature.
Technical Context
The JAN1N4245 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 standard TVS diodes, its clamping voltage remains nearly constant across 24–40A peak pulse current due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with stable 27.5–28V clamping at rated IPP, 175pF junction capacitance at 22V/1MHz, and <600nA reverse leakage - enabling reliable protection in thermally demanding USB PD and industrial environments without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without overvoltage stress during normal operation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays within safe margin below typical 30V+ damage thresholds of load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment and USB PD endpoints. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness requirements without external shielding. |
| Dynamic Resistance | 20mΩ - enables low-voltage drop during surge conduction, minimizing energy dissipation in the device and thermal stress. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with DC power rails and low-speed control lines; not suitable for >100MHz signal paths. |
| Operating Temp | –40°C to +125°C - supports extended-range deployment in outdoor IoT gateways, industrial PLCs, and automotive infotainment power inputs. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current; all three must be connected with low-inductance vias to maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS or load switch VIN); parallel connection ensures uniform current sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables flat clamping voltage vs. current curve - avoids 38V+ clamping rise seen in TVS diodes at 40A/125°C. |
| Temperature-stable clamping | 27.5–28V clamping maintained from –40°C to +125°C - eliminates need for thermal derating in enclosure-limited designs. |
| Low dynamic resistance | 20mΩ RDYN minimizes I²R heating during 40A surges, reducing junction temperature rise and improving reliability. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive fast transients in motor-driven industrial equipment. |
| Space-efficient DFN | 1.6mm × 1.6mm footprint saves >60% board area versus SO-8 or SMC TVS solutions with comparable surge rating. |
Applications
| USB Type-C Power Delivery | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed between connector and load switch input. Use Value: Maintains 28V clamping at full 40A surge - prevents damage to downstream HS2950P or similar load switches rated ≤30V absolute max. |
Use Scenario: Safeguarding enable-controlled power rails in remote meters, robotics actuators, and programmable logic controllers. IC Role / Device Role / Timing Role: Front-end transient clamp on VIN pin of e-fuse or load switch ICs (e.g., TPS25940, AP22653). Use Value: Limits voltage overshoot to ≤28V during lightning-induced surges, preserving internal FET integrity and avoiding latch-up or gate oxide failure. |
| IoT Edge Gateway Power Input | Notebook/Tablet DC Power Rail Protection |
Use Scenario: Securing 22V auxiliary power inputs in battery-backed cellular or LoRaWAN gateways deployed outdoors. IC Role / Device Role / Timing Role: Standalone surge protector on main DC input before buck converter or PMIC. Use Value: Delivers 40A surge handling with no derating at +85°C ambient - critical for sealed enclosures lacking active cooling. |
Use Scenario: Protecting 20V DC-in rails in ultrabooks and 2-in-1 tablets using USB-C PD charging. IC Role / Device Role / Timing Role: Secondary-level clamping device after front-end common-mode choke, upstream of DC-DC regulators. Use Value: 175pF capacitance avoids signal integrity issues on 20V rail while providing ±30kV ESD robustness required for user-accessible ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs, DFN-6 package, and marking code T22 - direct Semtech production variant of JAN1N4245. | No functional difference; used interchangeably in BOMs where manufacturer-specific part numbering is required. | Select TDS2211P.C for traceability to Semtech's official ordering channel and full compliance documentation. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 22.5A (8/20μs), higher clamping, no FET-based flat response. | Lacks temperature stability and current-flat clamping - requires oversizing to meet same 28V clamping target at 40A/125°C. | Choose SMAJ22A only if cost sensitivity outweighs clamping performance and thermal margin requirements. |
Compared with JAN1N4245, TDS2211P.C offers identical performance with full manufacturer traceability, while SMAJ22A provides lower-cost surge protection at the expense of 7.5V higher clamping and significant thermal derating - making JAN1N4245 the preferred choice for compact, thermally constrained 22V systems requiring consistent 28V clamping.
Availability
JAN1N4245 is available at Aetrix Electronics and suitable for USB PD, industrial load switch inputs, and IoT gateway power rails requiring stable component supply, long-term lifecycle support, and guaranteed surge performance across temperature extremes.
Supply support for JAN1N4245 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 power management, protection, and signal integrity.
JAN1N4245 belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where flat clamping and temperature stability are mandatory.
FAQ
What is the clamping voltage of JAN1N4245 at 40A surge current?
The JAN1N4245 clamps at 27.5–28V under 40A peak pulse current (8/20μs waveform). This value is guaranteed across –40°C to +125°C and remains stable due to its FET-based shunt architecture - unlike TVS diodes whose clamping rises linearly with current. The 28V ceiling ensures compatibility with 30V-rated load switches and PD controllers.
Is JAN1N4245 pin-compatible with standard TVS diodes like SMAJ22A?
No, JAN1N4245 is not pin-compatible with SMAJ22A or other 2-pin TVS diodes. It uses a 6-pin DFN package with three parallel input pins (4,5,6) and three parallel ground pins (1,2,3) to handle 40A surge current. Replacing a 2-pin TVS requires PCB layout revision to accommodate the DFN-6 footprint and multi-pin routing.
Can JAN1N4245 be used on high-speed data lines such as USB SuperSpeed or PCIe?
No, JAN1N4245 is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on >100MHz interfaces. It is intended exclusively for DC power rails and low-speed control lines - use low-capacitance devices like RClamp3371ZC (<0.25pF) for USB SS or DP/DM lines.
Does JAN1N4245 require a thermal pad or heatsink for 40A surge handling?
No, JAN1N4245 does not require a thermal pad or external heatsink. Its FET-based architecture dissipates surge energy efficiently with minimal I²R heating, and the DFN package is designed for direct PCB copper pour attachment. Layout guidelines emphasize low-inductance ground vias-not thermal mass-to maximize surge current capability.
What is the maximum operating temperature range for JAN1N4245?
JAN1N4245 is rated for continuous operation from –40°C to +125°C. Its clamping voltage, leakage current, and dynamic resistance remain within specification across this full range - confirmed by characterization data showing stable 27.5–28V clamping at 40A even at +125°C, making it suitable for under-hood automotive or sealed industrial enclosures.
JAN1N4245 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):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/286
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
JAN1N4245 FAQ
1.How can I place an order for JAN1N4245 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4245 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 JAN1N4245 reliable?
The price and inventory of JAN1N4245 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4245 is usually 5 days.
3.What payment methods are accepted for JAN1N4245?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4245 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4245?
JAN1N4245 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4245 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 JAN1N4245?
For technical support, including JAN1N4245 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4245 requirements.
6.How does Aetrix verify that JAN1N4245 is sourced from the original manufacturer or authorized distributors?
All JAN1N4245 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 JAN1N4245 meets industry standards.
7.What is the process for return or replacement of JAN1N4245?
All JAN1N4245 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4245, 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 JAN1N4245 part is unused and in its original packaging.
Return procedure for JAN1N4245:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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