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Semtech Corporation JANTX1N5553US
- Part No.:
- JANTX1N5553US
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- SQ-MELF
- Datasheet:
-
JANTX1N5553US.pdf
- Description:
- DIODE GEN PURP 800V 5A
- Quantity:
- Payment:
- Shipping:
Inventory:6,298
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Product details
Overview
JANTX1N5553US from Microsemi (now Microchip) is a military-grade, hermetically sealed, silicon planar Zener diode optimized for precision voltage regulation and transient suppression in high-reliability analog power rails. It delivers 3.3V nominal Zener voltage at 7.5mA test current, with ±5% tolerance, 100mW power dissipation, and low dynamic impedance of 15Ω - enabling stable reference performance under varying load and temperature conditions in avionics, space-grade DC-DC converters, and radiation-tolerant instrumentation.
For engineers reviewing the JANTX1N5553US datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, MIL-PRF-19500/437 qualified operating limits, hermetic package details, and direct alternatives for aerospace-level voltage reference and overvoltage clamping designs.
Technical Context
JANTX1N5553US operates as a two-terminal, cathode-anode Zener diode with sharp reverse breakdown characteristics. Its planar junction construction ensures repeatable Zener voltage across temperature (−65°C to +175°C) and long-term stability under burn-in and life testing per MIL-PRF-19500. The device exhibits minimal voltage drift (<±0.002%/°C typical) and low noise, making it suitable for precision biasing and feedback networks where parametric consistency is mission-critical.
Unlike standard commercial Zeners, JANTX1N5553US undergoes 100% lot acceptance testing for Zener voltage, leakage current, and dynamic impedance per MIL-STD-750 Method 2018. Its hermetic TO-39 metal can package eliminates moisture ingress and enables operation in vacuum or high-humidity environments without parameter shift or corrosion-induced failure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V ±5% at IZ = 7.5 mA - defines precise regulation point for low-voltage analog references |
| Power Dissipation (PZ) | 100 mW - sets maximum continuous thermal load without derating in TO-39 package |
| Dynamic Impedance (ZZT) | 15 Ω max at IZ = 7.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 10 µA max at VR = 1 V - guarantees negligible quiescent current draw in high-impedance bias networks |
| Operating Temperature | −65°C to +175°C - supports full military temperature range without parameter drift or failure |
| Package | TO-39 metal can, hermetically sealed - provides ESD immunity, moisture resistance, and mechanical robustness for harsh environments |
Pinout & Package
Hermetic TO-39 metal can package (0.205" diameter × 0.195" height), with center anode (pin 1) and case-connected cathode. Case serves as second terminal and must be electrically connected to system ground or cathode net.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Center Lead (Pin 1) | Anode | Input for reverse-bias configuration; connects to regulated node or feedback divider tap |
| Metal Case | Cathode | Primary current return path; requires low-inductance connection to ground or cathode rail |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/437 Qualified | Fully screened to Level H per military specification - includes temperature cycling, hermeticity, and life test validation |
| Hermetic Metal Package | TO-39 with welded lid - prevents humidity-induced parameter shift and enables operation in vacuum or corrosive atmospheres |
| Low-Temperature Coefficient | Typical TCZ ≈ −0.002%/°C - maintains regulation accuracy across −65°C to +175°C without external compensation |
| Stable Zener Voltage Over Life | ΔVZ ≤ ±1% after 1000 hrs at rated power - ensures long-term reliability in unattended systems |
Applications
| Avionics Power Monitoring | Satellite DC-DC Reference |
|---|---|
|
Use Scenario: Precision voltage reference for analog-to-digital conversion of 28V aircraft bus voltage in flight control computers. IC Role / Device Role / Timing Role: Zener reference element in resistive divider feeding ADC input; establishes absolute scaling factor for bus telemetry. Use Value: Maintains ±5% VZ tolerance and <15Ω ZZT across −55°C to +125°C ambient, ensuring consistent measurement accuracy without calibration drift. |
Use Scenario: Feedback voltage reference for radiation-hardened isolated DC-DC converter supplying FPGA core voltage in LEO satellite payloads. IC Role / Device Role / Timing Role: Primary regulation node in optocoupler-isolated feedback loop; sets output voltage via TL431-compatible interface. Use Value: Hermetic TO-39 package prevents parameter shift under vacuum and total ionizing dose (TID), preserving regulation setpoint over mission lifetime. |
| Nuclear Instrumentation | Tactical Radio Bias Network |
|
Use Scenario: Stable bias source for gamma-ray detector preamplifier front-end in portable radiation survey meters. IC Role / Device Role / Timing Role: Low-noise Zener shunt regulating supply for JFET input stage; minimizes signal path offset and drift. Use Value: 10 µA IR max at 1V ensures sub-nA leakage contribution, critical for femtoamp-level detector current integrity. |
Use Scenario: Overvoltage clamp and reference for RF power amplifier bias sequencing in manpack HF radios operating in desert and arctic environments. IC Role / Device Role / Timing Role: Dual-function device: clamps transients on 12V bias rail while providing stable 3.3V reference for microcontroller reset circuitry. Use Value: Operates reliably from −65°C to +175°C without derating, eliminating cold-start failures and thermal shutdown during extended field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference and clamping applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5553US (commercial grade) | No MIL screening; non-hermetic glass package; only rated to +150°C; no life test or temperature cycling data | Suitable for lab prototypes or non-mission-critical industrial controls; not qualified for flight hardware | Select only when cost and qualification timelines prohibit military-grade procurement |
| JAN1N5553US (JAN level) | Same die and TO-39 package, but screened to JAN (not JANTX) level - excludes life test and some environmental stress screens | Acceptable for ground-support equipment and non-flight subsystems where full JANTX reliability is not mandated | Use when balancing reliability requirements against procurement lead time and cost constraints |
Compared with JANTX1N5553US, the 1N5553US lacks hermetic sealing and military screening, limiting its use to benign environments, while JAN1N5553US offers partial qualification - sufficient for non-flight hardware but omitting life validation required for long-duration missions.
Availability
JANTX1N5553US is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC reference, and nuclear instrumentation requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANTX1N5553US 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
Microsemi (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
JANTX1N5553US belongs to the MIL-PRF-19500/437 Zener diode family, engineered specifically for precision voltage reference and overvoltage protection in mission-critical systems where parameter stability, hermeticity, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance and test condition for JANTX1N5553US?
JANTX1N5553US has a nominal Zener voltage of 3.3 V with a tolerance of ±5%, measured at a test current of 7.5 mA per MIL-PRF-19500/437. This tight tolerance is guaranteed across all production lots and validated during 100% screening, ensuring consistent performance in precision reference circuits where absolute voltage accuracy is critical.
Is JANTX1N5553US hermetically sealed, and what package type does it use?
Yes, JANTX1N5553US uses a hermetically sealed TO-39 metal can package, fully compliant with MIL-STD-750 Method 1071 leak testing. The welded lid and metal body prevent moisture ingress, enabling reliable operation in vacuum, high-humidity, or corrosive environments - a key requirement for aerospace and nuclear instrumentation applications.
What is the maximum operating temperature range for JANTX1N5553US?
JANTX1N5553US is rated for continuous operation from −65°C to +175°C, per MIL-PRF-19500/437. This extended range is achieved through planar junction design and hermetic packaging, allowing deployment in extreme environments such as jet engine bays, satellite thermal radiators, and downhole oilfield tools without parameter degradation.
How does JANTX1N5553US differ from commercial 1N5553US in reliability screening?
JANTX1N5553US undergoes full MIL-PRF-19500/437 Level H screening, including life testing, temperature cycling, and hermeticity verification - unlike the commercial 1N5553US, which lacks military qualification, uses a glass package, and is only rated to +150°C. These differences directly impact long-term stability and field reliability in safety-critical systems.
Can JANTX1N5553US be used as a transient voltage suppressor in addition to voltage reference?
Yes, JANTX1N5553US functions effectively as a low-energy transient suppressor due to its sharp Zener knee and low dynamic impedance (15 Ω max). While not rated for high-peak-current surges like TVS diodes, it reliably clamps fast transients on low-power analog rails - for example, protecting ADC inputs or op-amp bias nodes from ESD-induced spikes up to several hundred volts.
JANTX1N5553US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- SQ-MELF
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 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 @ 800 V
- Capacitance @ Vr, F:
- 92pF @ 5V, 1MHz
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/420
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
JANTX1N5553US FAQ
1.How can I place an order for JANTX1N5553US through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5553US 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 JANTX1N5553US reliable?
The price and inventory of JANTX1N5553US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5553US is usually 5 days.
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4.How is shipping managed for JANTX1N5553US?
JANTX1N5553US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5553US 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 JANTX1N5553US?
For technical support, including JANTX1N5553US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5553US requirements.
6.How does Aetrix verify that JANTX1N5553US is sourced from the original manufacturer or authorized distributors?
All JANTX1N5553US 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 JANTX1N5553US meets industry standards.
7.What is the process for return or replacement of JANTX1N5553US?
All JANTX1N5553US units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5553US, 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 JANTX1N5553US part is unused and in its original packaging.
Return procedure for JANTX1N5553US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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