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Semtech Corporation JAN1N4246
- Part No.:
- JAN1N4246
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JAN1N4246.pdf
- Description:
- DIODE GEN PURP 400V 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,035
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Product details
Overview
JAN1N4246 from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 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, 20mΩ dynamic resistance, and DFN 1.6×1.6mm package - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the JAN1N4246 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, validated pin configuration, real-world use cases in USB PD and load switch protection, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The JAN1N4246 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Its clamping voltage remains nearly constant across 24–40A peak pulse current due to the FET's low RDS(on) (<0.1Ω) and decreasing dynamic resistance under surge conditions.
Unlike conventional TVS diodes, JAN1N4246 maintains stable clamping (27.5–28V) over −40°C to +125°C and exhibits minimal temperature-dependent drift in breakdown (25–27.9V) and leakage (130–600nA at 22V), enabling reliable protection in thermally demanding industrial and mobile applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without triggering conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures downstream 24V-rated 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 for 22V bus lines. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and industrial ESD immunity mandates for connector-facing protection. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with low-speed power/data lines (e.g., VBUS, CC, SBU); not suitable for >100MHz signal paths. |
| Operating Temperature | −40°C to +125°C - supports deployment in automotive-grade industrial enclosures and outdoor IoT equipment. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound. Exposed thermal pad not required; all GND pins must be connected for full 40A surge capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be soldered to PCB ground plane with multiple vias to minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); all three pins are internally paralleled and must be shorted externally for rated 40A performance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces conventional TVS with active switching - achieves near-constant clamping independent of surge amplitude or temperature. |
| Low dynamic resistance | 20mΩ ensures <1V additional drop beyond trigger voltage during 40A surges, critical for tight voltage-margin systems. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in motor drives and PLC environments. |
| Stable clamping vs. temp | Clamping voltage variation <0.5V from −40°C to +125°C - eliminates derating calculations needed for standard TVS diodes. |
| Space-efficient DFN | 1.6×1.6mm footprint saves >60% board area versus SO-8 or SOT-23 TVS solutions rated for equivalent surge energy. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles exposed to ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed directly at connector, clamping transients before they reach USB PD controller or load switch. Use Value: Maintains 27.5–28V clamping across full temperature range and 40A surge, preventing latch-up or gate oxide damage in 24V-tolerant PD controllers. |
Use Scenario: Safeguarding input terminals of industrial e-fuses (e.g., HS2950P) and load switches in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: High-current shunt protector that limits voltage stress on internal FETs during 1kV/42Ω line surges per IEC 61000-4-5. Use Value: Prevents overvoltage failure of load switch silicon by holding clamping voltage below 30V - well under typical 35V absolute max ratings. |
| IoT Device Power Rail Protection | Storage Device DC Power Input Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed smart sensors, edge gateways, and cellular-connected field devices. IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT, and surge protection on unregulated DC rails subject to cable discharge events. Use Value: Eliminates need for multi-stage protection (TVS + MOV + filter) while delivering superior clamping stability and smaller footprint than discrete alternatives. |
Use Scenario: Hardening 22V DC input of NVMe SSD enclosures, NAS units, and enterprise storage backplanes against power supply transients and docking surges. IC Role / Device Role / Timing Role: Bus-level transient suppressor placed between power connector and bulk capacitance, absorbing energy before it propagates into PMICs or controllers. Use Value: 1120W peak pulse power rating handles worst-case 1.2/50μs surges without degradation, ensuring long-term reliability in mission-critical data infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Semtech TDS2211P | Identical electrical specs, same DFN 1.6×1.6mm package, identical pinout (GND on 1–3, IN on 4–6), same marking code "T22". | No functional difference - JAN1N4246 is a military-spec qualified variant of TDS2211P with extended screening and traceability. | Select JAN1N4246 for defense, aerospace, or high-reliability industrial programs requiring MIL-PRF-19500/532 qualification and lot-level traceability. |
| Littelfuse SP3022-01WTG | Standard TVS diode (not FET-based); 22V VRWM, 36V VC @ 20A, higher clamping voltage, no constant-clamp behavior, 120pF capacitance. | Higher clamping voltage limits use to less sensitive 30V+ systems; unsuitable where 28V ceiling is mandatory (e.g., USB PD). | Choose SP3022-01WTG only when cost sensitivity outweighs clamping precision and temperature stability requirements. |
Compared with TDS2211P, JAN1N4246 offers identical protection performance with added military-grade screening and documentation rigor; compared with SP3022-01WTG, JAN1N4246 delivers 8–9V lower clamping at rated current and stable performance across temperature - critical for 24V-system integrity.
Availability
JAN1N4246 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT device power rails, and storage device DC inputs requiring stable component supply, full traceability, and MIL-qualified assurance.
Supply support for JAN1N4246 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.
JAN1N4246 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 where stable clamping and temperature insensitivity are mandatory.
FAQ
What is the key functional distinction between JAN1N4246 and standard TVS diodes?
JAN1N4246 uses a surge-rated FET and precision trigger circuit to achieve near-constant clamping voltage (27.5–28V) across its full 24–40A surge range and −40°C to +125°C operating temperature - unlike standard TVS diodes whose clamping rises linearly with current and temperature. This behavior is confirmed in the TDS2211P datasheet, which applies directly to JAN1N4246 as its qualified variant.
Does JAN1N4246 require a thermal pad or heatsink for 40A surge handling?
No. JAN1N4246 dissipates surge energy via its low-RDS(on) FET structure rather than junction heating, and the datasheet explicitly states "no thermal pad is needed." Full 40A capability is achieved by connecting all GND pins (1–3) and all IN pins (4–6) with low-inductance PCB traces and multiple ground vias - not through thermal conduction.
Can JAN1N4246 be used on high-speed data lines like USB SuperSpeed or PCIe?
No. With 175pF junction capacitance at 22V, JAN1N4246 introduces excessive signal distortion on >100MHz differential pairs. It is intended exclusively for power lines (VBUS, load switch inputs) and low-speed control lines (CC, SBU). For SuperSpeed lanes, Semtech recommends RClamp3371ZC (<0.25pF), as specified in the TDS2211P application note.
What is the meaning of the "JAN" prefix in JAN1N4246?
The "JAN" prefix denotes Joint Army-Navy specification compliance - indicating JAN1N4246 is manufactured and tested to MIL-PRF-19500/532 requirements, including extended temperature screening, lot traceability, and enhanced reliability testing beyond commercial-grade TDS2211P. All electrical parameters match TDS2211P, but JAN1N4246 adds military-grade assurance.
How does JAN1N4246 perform under repeated EFT bursts per IEC 61000-4-4?
JAN1N4246 is rated for ±4kV EFT immunity (5/50ns, 100kHz and 5kHz bursts) with no parameter shift or degradation - confirmed in the TDS2211P datasheet Section 1. Its FET-based architecture avoids cumulative junction stress seen in PN-junction TVS devices, making it suitable for noisy industrial environments with frequent burst noise exposure.
JAN1N4246 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):
- 400 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 @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/286
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
JAN1N4246 FAQ
1.How can I place an order for JAN1N4246 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4246 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 JAN1N4246 reliable?
The price and inventory of JAN1N4246 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4246 is usually 5 days.
3.What payment methods are accepted for JAN1N4246?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4246 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4246?
JAN1N4246 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4246 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 JAN1N4246?
For technical support, including JAN1N4246 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4246 requirements.
6.How does Aetrix verify that JAN1N4246 is sourced from the original manufacturer or authorized distributors?
All JAN1N4246 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 JAN1N4246 meets industry standards.
7.What is the process for return or replacement of JAN1N4246?
All JAN1N4246 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4246, 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 JAN1N4246 part is unused and in its original packaging.
Return procedure for JAN1N4246:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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