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Semtech Corporation JANTX1N5551
- Part No.:
- JANTX1N5551
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANTX1N5551.pdf
- Description:
- DIODE GEN PURP 400V 5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,226
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Product details
Overview
JANTX1N5551 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. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the JANTX1N5551 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping behavior across temperature, and direct alternatives for 22V bus protection in USB PD, IoT, and industrial equipment design.
Technical Context
The JANTX1N5551 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-27.5–28V-from 24A to 40A peak pulse current due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C with stable 22V reverse stand-off voltage, <600nA leakage at VRWM, and 175pF junction capacitance at 22V/1MHz. Its DFN-6 package integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to minimize parasitic inductance and maximize surge current handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22 V - Maximum continuous operating voltage before triggering; matches 20V USB PD bus with 10% margin. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - Limits downstream IC voltage stress during lightning surges without derating at high temperature. |
| Peak Pulse Current | 40 A (8/20μs) - Meets IEC 61000-4-5 Level 4 industrial surge immunity requirements with single-device coverage. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Eliminates need for secondary ESD stages on protected lines. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping curve; reduces voltage overshoot vs. TVS diodes whose VC rises linearly with IPP. |
| Junction Capacitance | 175 pF at 22V/1MHz - Compatible with DC-coupled 22V power rails; not intended for high-speed data lines. |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound. Thermal pad not required; energy dissipated in silicon FET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias for full 40A rating. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected bus; single trace routing required to minimize impedance imbalance and ensure equal current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V from 24A to 40A-enables predictable overvoltage margin without overspec'ing IPP. |
| Temperature-stable protection | Clamping remains 27.5–28 V from –40°C to +125°C-avoids thermal derating common in TVS diodes. |
| Low dynamic resistance | 20 mΩ ensures minimal IR drop during surge-critical for protecting low-voltage-tolerance load switches. |
| High-energy EOS handling | 1120 W peak pulse power (8/20μs)-absorbs multi-kV transients without degradation in industrial environments. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation against ESD, lightning, and cable discharge events. IC Role / Device Role / Timing Role: Primary EOS shunt device placed between connector and PD controller or e-fuse IC. Use Value: Maintains 27.5–28V clamping across temperature-prevents PD controller latch-up or gate oxide damage even at 125°C ambient. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Front-end transient clamp upstream of the load switch's internal FET to limit drain-source voltage stress. Use Value: Keeps clamping below the switch's absolute maximum VDS, avoiding destructive avalanche or gate driver failure during 1kV surge events. |
| IoT Device Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors and edge nodes exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks on compact PCBs. Use Value: 1.6 mm × 1.6 mm footprint saves >60% board area versus discrete TVS + series resistor solutions while delivering higher IPP. |
Use Scenario: Protecting 22V backup supplies in NVMe SSDs and enterprise storage controllers against hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: Standby-mode protector on non-switched VCC rail, active only during EOS events. Use Value: <600 nA leakage at 22V ensures negligible standby current drain-critical for long-term battery-backed retention. |
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.C | Identical electrical specs and DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel) and date-code marking format. | No functional difference; suitable for production builds requiring standard distribution packaging. | Select JANTX1N5551 for military-grade screening per MIL-PRF-19500; choose TDS2211P.C for commercial volume procurement. |
| Littelfuse SP3022-01FTG | 22V stand-off, but uses silicon avalanche diode architecture-clamping rises to ~36V at 40A and increases with temperature. | Requires thermal derating above 85°C; less suitable for sealed industrial enclosures with high ambient. | Use only if board space allows larger SOD-323 package and design tolerates higher clamping voltage drift. |
Compared with JANTX1N5551, TDS2211P.C offers identical protection performance in commercial packaging, while SP3022-01FTG provides lower-cost TVS-based protection at the expense of clamping stability and temperature resilience-making JANTX1N5551 optimal for thermally constrained, high-reliability 22V bus designs.
Availability
JANTX1N5551 is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection circuits, and IoT device 22V power rails requiring stable component supply, extended temperature operation, and MIL-qualified reliability.
Supply support for JANTX1N5551 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 precision protection, signal integrity, and power management.
JANTX1N5551 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy, temperature-critical 22V bus protection applications where clamping stability is non-negotiable.
FAQ
What is the exact package type and dimensions of JANTX1N5551?
JANTX1N5551 uses a 6-pin DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed pad-less construction. Pins 1–3 are ground terminals; pins 4–6 are parallel-connected input terminals. The package complies with RoHS, halogen-free, and UL 94V-0 flammability standards-no thermal pad is required as energy is dissipated within the silicon FET structure of JANTX1N5551.
Does JANTX1N5551 meet IEC 61000-4-5 surge immunity requirements?
Yes, JANTX1N5551 is rated for 40A peak pulse current using the 8/20μs waveform per IEC 61000-4-5, and supports ±1kV combination-wave testing (1.2/50μs voltage, 8/20μs current, RS = 42Ω). Its 27.5–28V clamping voltage at 40A ensures protected circuits remain within safe operating limits during Level 4 industrial surge events-validating JANTX1N5551 for use in harsh electromagnetic environments.
How does JANTX1N5551 differ from standard TVS diodes in clamping behavior?
JANTX1N5551 employs a triggered FET architecture instead of a pn-junction diode, resulting in near-constant clamping voltage (27.5–28V) across its full 24–40A peak pulse range and from –40°C to +125°C. In contrast, standard TVS diodes exhibit linear VC = VBR + IPP × RDYN behavior-causing clamping to rise significantly with current and temperature. This fundamental difference makes JANTX1N5551 uniquely suited for thermally demanding 22V bus protection.
Can JANTX1N5551 be used on high-speed data lines like USB SuperSpeed or PCIe?
No, JANTX1N5551 is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on differential pairs operating above ~100 Mbps. JANTX1N5551 is designed exclusively for DC-coupled power rails and low-frequency I/O lines-such as USB PD VBUS, load switch inputs, or 22V backup supplies-where bandwidth is not a constraint but clamping stability is essential.
What is the maximum operating temperature range for JANTX1N5551?
JANTX1N5551 is specified for continuous operation from –40°C to +125°C ambient temperature. Its clamping voltage, leakage current (<600 nA at 22V), and peak pulse current capability remain fully guaranteed across this full range-unlike conventional TVS devices whose performance degrades above 85°C. This extended thermal capability is intrinsic to the FET-based architecture of JANTX1N5551 and validated in Semtech's characterization data.
JANTX1N5551 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):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 92pF @ 5V, 1MHz
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/420
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
JANTX1N5551 FAQ
1.How can I place an order for JANTX1N5551 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5551 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 JANTX1N5551 reliable?
The price and inventory of JANTX1N5551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5551 is usually 5 days.
3.What payment methods are accepted for JANTX1N5551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5551?
JANTX1N5551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5551 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 JANTX1N5551?
For technical support, including JANTX1N5551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5551 requirements.
6.How does Aetrix verify that JANTX1N5551 is sourced from the original manufacturer or authorized distributors?
All JANTX1N5551 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 JANTX1N5551 meets industry standards.
7.What is the process for return or replacement of JANTX1N5551?
All JANTX1N5551 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5551, 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 JANTX1N5551 part is unused and in its original packaging.
Return procedure for JANTX1N5551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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