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Semtech Corporation JANTX1N3647
- Part No.:
- JANTX1N3647
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANTX1N3647.pdf
- Description:
- DIODE GEN PURP 3KV 600MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,708
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Product details
Overview
JANTX1N3647 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 JANTX1N3647 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternative part comparisons for EOS-critical designs requiring low-voltage overshoot control and high surge survivability.
Technical Context
JANTX1N3647 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 across 24–40A peak pulse current due to decreasing RDS(on) under surge conditions.
The device operates over −40°C to +125°C with stable 27.5–28V clamping at 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), and maintains <600nA reverse leakage at 22V VRWM across temperature - enabling reliable protection in thermally demanding industrial and portable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage before leakage or conduction begins. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during surge events. |
| 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 standard system-level ESD test requirements for external ports. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimal voltage rise under increasing surge current. |
| Junction Capacitance | 175pF at 22V, 1MHz - suitable for DC/low-speed power line protection; not intended for high-speed data lines. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, with exposed thermal pad not required (energy dissipated in silicon).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS or load switch input); all three pins are internally paralleled and must be tied together externally for full 40A rating. |
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 devices. |
| Temperature-stable protection | Clamping remains 27.5–28V from −40°C to +125°C - removes derating calculations for high-ambient environments. |
| Low dynamic resistance | 20mΩ enables efficient energy shunting without thermal runaway - supports repeated surge events without degradation. |
| High-energy ESD robustness | ±30kV contact/air per IEC 61000-4-2 - protects against human-body-model and system-level ESD in field-deployed equipment. |
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 transients. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed between connector and PD controller/load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents overvoltage damage to sensitive PD controllers rated ≤30V. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Surge diverter placed upstream of the load switch FET to limit gate-source and drain-source overvoltage. Use Value: Keeps clamping voltage below MOSFET avalanche threshold - avoids destructive failure of internal power FETs during 1kV/42Ω surges. |
| IoT Device Power Rail Protection | Notebook/Tablet DC Input Protection |
|
Use Scenario: Securing 22V-rated auxiliary power inputs in battery-powered IoT gateways exposed to ESD and induced surges. IC Role / Device Role / Timing Role: Single-component transient suppressor for unidirectional DC input rails with no signal integrity constraints. Use Value: 175pF capacitance and 600nA leakage at 22V enable low-power standby operation without compromising surge immunity. |
Use Scenario: Hardening 20V DC-in ports on ultraportable notebooks and tablets against accidental adapter misconnection and ESD. IC Role / Device Role / Timing Role: Standalone overvoltage clamp on main power entry point, preceding buck converter or battery charger IC. Use Value: 1.6mm × 1.6mm DFN footprint saves board space versus SOD-123 or SMA packages while delivering 1120W peak power handling. |
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 min clamping at 12.5A (8/20μs); higher dynamic resistance (~0.5Ω); clamping rises with current and temperature. | Limited to lower-energy surges; requires larger voltage margin for same protection level; unsuitable for 125°C ambient or repeated 40A events. | Choose SMAJ22A only if cost sensitivity outweighs clamping stability and thermal robustness requirements. |
| TPD2E007DRYR | Low-capacitance (7pF) dual-channel TVS for data lines; 24V working voltage; 1A peak pulse rating; not rated for 40A or power-line surge standards. | Designed for USB 2.0/DP/DM signal lines - incompatible with VBUS or power rail protection due to current and energy limits. | Use TPD2E007DRYR only for high-speed interface protection; JANTX1N3647 remains required for power-line EOS hardening. |
Compared with SMAJ22A and TPD2E007DRYR, JANTX1N3647 uniquely delivers flat 27.5–28V clamping at 40A across −40°C to +125°C - making it the sole option among these three for industrial-grade 22V power rail surge compliance without derating or parallel device stacking.
Availability
JANTX1N3647 is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, IoT power inputs, and notebook DC-in protection requiring stable component supply and guaranteed surge performance.
Supply support for JANTX1N3647 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 semiconductors for precision sensing, power management, and transient protection.
JANTX1N3647 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail applications where clamping stability, temperature independence, and multi-kA surge tolerance are critical.
FAQ
What is the exact clamping voltage specification for JANTX1N3647 at 40A surge current?
JANTX1N3647 clamps at 27.5–28V under IEC 61000-4-5 combination waveform conditions (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A peak pulse current - confirmed in the Electrical Characteristics table of the official Semtech datasheet Rev 2.5.
Does JANTX1N3647 require a thermal pad on the PCB?
No, JANTX1N3647 does not require a thermal pad. Its DFN-6 package dissipates surge energy within the silicon die, and the datasheet explicitly states "no thermal pad is needed" - unlike power MOSFETs or linear regulators. Ground connections via pins 1–3 suffice for thermal and electrical performance.
Can JANTX1N3647 protect high-speed data lines like USB 3.2 or PCIe?
No, JANTX1N3647 is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on >100MHz interfaces. It is specified exclusively for DC or low-frequency power/bus protection - use low-capacitance TVS like RClamp3371ZC for USB SS or DP/DM lines.
How does JANTX1N3647 differ from standard TVS diodes in clamping behavior?
JANTX1N3647 uses a triggered FET shunt architecture, yielding near-constant clamping voltage (27.5–28V) from 24A to 40A and across −40°C to +125°C. Standard TVS diodes exhibit linear clamping rise (VC = VBR + IPP × RDYN) and significant temperature drift - confirmed by comparative curves in the TDS2211P datasheet Figure 3.
Is JANTX1N3647 compliant with RoHS and halogen-free standards?
Yes, JANTX1N3647 is Pb-free, halogen-free, and compliant with RoHS/WEEE directives. The datasheet specifies "Pb-Free, Halogen Free, RoHS/WEEE Compliant" under Mechanical Characteristics, and the molding compound meets UL 94V-0 flammability rating.
JANTX1N3647 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):
- 3000 V
- Current - Average Rectified (Io):
- 600mA
- Voltage - Forward (Vf) (Max) @ If:
- 5 V @ 250 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 3000 V
- Capacitance @ Vr, F:
- 8pF @ 5V, 1MHz
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/279
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
JANTX1N3647 FAQ
1.How can I place an order for JANTX1N3647 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N3647 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 JANTX1N3647 reliable?
The price and inventory of JANTX1N3647 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N3647 is usually 5 days.
3.What payment methods are accepted for JANTX1N3647?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N3647 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N3647?
JANTX1N3647 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N3647 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 JANTX1N3647?
For technical support, including JANTX1N3647 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N3647 requirements.
6.How does Aetrix verify that JANTX1N3647 is sourced from the original manufacturer or authorized distributors?
All JANTX1N3647 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 JANTX1N3647 meets industry standards.
7.What is the process for return or replacement of JANTX1N3647?
All JANTX1N3647 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N3647, 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 JANTX1N3647 part is unused and in its original packaging.
Return procedure for JANTX1N3647:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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