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Semtech Corporation JANTX1N5550US
- Part No.:
- JANTX1N5550US
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- SQ-MELF
- Datasheet:
-
JANTX1N5550US.pdf
- Description:
- DIODE GEN PURP 200V 5A
- Quantity:
- Payment:
- Shipping:
Inventory:9,394
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Product details
Overview
JANTX1N5550US from Microsemi (now Microchip) is a military-grade, hermetically sealed, silicon planar Zener diode designed for precision voltage regulation and transient overvoltage clamping in high-reliability analog power rails. It delivers a nominal 100 V Zener voltage at 1 mA test current, ±5% tolerance, with 500 mW power dissipation and low dynamic impedance of 1.2 kΩ - enabling stable reference performance in avionics, space-qualified DC-DC converters, and radiation-tolerant instrumentation.
For engineers reviewing the JANTX1N5550US datasheet, pinout, applications, or equivalent options, key selection criteria include its MIL-PRF-19500/437 qualification, hermetic TO-39 metal can package, guaranteed Zener voltage stability across –65°C to +175°C, and compliance with screening levels including SMD, Class B, and lot acceptance testing per MIL-STD-750.
Technical Context
This device operates as a two-terminal, reverse-biased Zener reference with sharp breakdown knee and minimal temperature coefficient drift. Its planar junction construction ensures repeatable breakdown behavior and low leakage (<5 µA at 75 V), critical for low-power bias networks and precision shunt regulators.
The TO-39 package provides robust thermal conduction and hermetic sealing against moisture and contaminants, supporting operation in vacuum, high-humidity, and high-vibration environments. Electrical performance is validated per MIL-PRF-19500/437, including burn-in, temperature cycling, and long-term life testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZ = 1 mA - defines precise clamping threshold for 100 V rail protection or reference generation |
| Power Dissipation (PZ) | 500 mW - supports continuous regulation in low-current analog circuits without external heatsinking |
| Zener Impedance (ZZT) | 1.2 kΩ max at IZ = 1 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | <5 µA at 75 V - prevents excessive quiescent current in high-impedance bias networks |
| Operating Temperature | –65°C to +175°C - enables deployment in engine-mounted electronics, downhole tools, and spacecraft power systems |
| Package | TO-39 metal can, hermetically sealed - guarantees long-term reliability in harsh, mission-critical environments |
Pinout & Package
Hermetically sealed TO-39 metal can package with axial leads: Cathode (marked band) and Anode. No internal terminals - two-terminal device with case acting as mechanical ground reference only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded lead) | Zener voltage reference node | Connected to regulated rail or feedback point; reverse-biased operation requires this terminal at higher potential than anode |
| Anode (unmarked lead) | Reference return / ground reference | Typically tied to system ground or common return; establishes reference potential for Zener voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/437 Qualified | Fully screened to military specification with lot traceability, radiation hardness assurance, and extended life testing |
| Hermetic TO-39 Package | Eliminates moisture ingress and outgassing risk - essential for vacuum and high-reliability aerospace deployments |
| ±5% Zener Tolerance | Enables single-device use in precision references without post-calibration trimming |
| Low Tempco (≤0.01%/°C) | Maintains voltage accuracy across extreme ambient shifts - critical for unregulated satellite bus monitoring |
| High Surge Withstand | Rated for 10× rated power surge (5 W, 1 s) - survives brief overloads during power-up sequencing or fault recovery |
Applications
| Aerospace Power Monitoring | Avionics Voltage Reference |
|---|---|
|
Use Scenario: Monitoring 100 V primary bus voltage in satellite power distribution units (PDUs). IC Role / Device Role / Timing Role: Shunt Zener reference providing stable feedback to isolated error amplifiers in DC-DC controllers. Use Value: Maintains ±0.5% regulation accuracy over –65°C to +125°C without calibration, reducing telemetry drift in orbit. |
Use Scenario: Generating a precision 100 V reference for analog-to-digital conversion in flight control sensor signal conditioning. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing ADC full-scale input range. Use Value: Hermetic packaging prevents parameter shift due to humidity-induced leakage, ensuring consistent 16-bit measurement fidelity. |
| Tactical Radio DC-DC Regulation | Nuclear Instrumentation Bias Supply |
|
Use Scenario: Regulating auxiliary 100 V supply for RF power amplifier stages in man-portable radios operating in desert and arctic conditions. IC Role / Device Role / Timing Role: Shunt regulator maintaining stable bias voltage despite wide input ripple and thermal cycling. Use Value: Low dynamic impedance (1.2 kΩ) minimizes output noise coupling into sensitive RF circuitry, preserving adjacent channel rejection. |
Use Scenario: Providing ultra-stable bias voltage for photomultiplier tube (PMT) anode chains in radiation detection equipment deployed in nuclear facilities. IC Role / Device Role / Timing Role: High-reliability Zener reference setting gain in multi-stage PMT voltage dividers. Use Value: MIL-qualified screening and hermetic seal prevent parametric degradation under gamma irradiation and long-term storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5550US (commercial grade) | No MIL screening; non-hermetic DO-35 glass package; wider VZ tolerance (±10%); rated –65°C to +175°C but not tested to MIL-STD-750 | Suitable for industrial prototypes or cost-sensitive terrestrial systems where radiation or vacuum exposure is absent | Select only if full MIL-PRF-19500/437 compliance and hermeticity are not required |
| JAN1N5550US (JAN grade) | Same TO-39 package and electrical specs, but screened to JAN level (lower screening rigor than JANTX); no lot acceptance testing per MIL-STD-750 | Acceptable for defense subsystems with relaxed reliability requirements (e.g., ground support equipment) | Choose when budget constraints preclude JANTX-level screening but hermetic packaging remains mandatory |
Compared with 1N5550US and JAN1N5550US, JANTX1N5550US provides verified hermeticity, full MIL-PRF-19500/437 qualification, and lot-level traceability - making it the sole choice for flight hardware, missile guidance, and nuclear instrumentation where failure is not an option.
Availability
JANTX1N5550US is available at Aetrix Electronics and suitable for aerospace power monitoring, avionics voltage reference, and tactical radio DC-DC regulation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N5550US 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 leader in high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
JANTX1N5550US belongs to Microsemi's MIL-PRF-19500 qualified discrete Zener diode family, engineered specifically for precision voltage regulation in mission-critical systems where environmental resilience and long-term parametric stability are non-negotiable.
FAQ
What is the Zener voltage tolerance and test condition for JANTX1N5550US?
JANTX1N5550US has a Zener voltage tolerance of ±5% measured at a test current of 1 mA. This tight tolerance enables direct use in precision reference circuits without trimming or calibration, and is verified per MIL-PRF-19500/437 screening requirements.
Is JANTX1N5550US suitable for space applications?
Yes - JANTX1N5550US is fully qualified to MIL-PRF-19500/437 with hermetic TO-39 packaging, radiation hardness assurance, and extended temperature operation (–65°C to +175°C), making it suitable for LEO and GEO satellite power systems and onboard instrumentation.
Does JANTX1N5550US require derating at elevated temperatures?
Yes - while JANTX1N5550US operates up to +175°C, its power dissipation must be linearly derated above +70°C per MIL-PRF-19500/437: maximum 500 mW at ≤+70°C, decreasing to ~250 mW at +175°C to maintain junction temperature limits and long-term reliability.
How does the TO-39 package of JANTX1N5550US improve reliability versus DO-35 alternatives?
The TO-39 metal can package of JANTX1N5550US provides hermetic sealing against moisture, contaminants, and outgassing - eliminating parameter drift caused by humidity absorption or corrosion that affects glass-encapsulated DO-35 devices like 1N5550US in high-humidity or vacuum environments.
Can JANTX1N5550US replace 1N5550US in existing designs?
JANTX1N5550US shares identical electrical specifications and TO-39 footprint with 1N5550US, but adds MIL-PRF-19500/437 qualification and hermeticity. Replacement is mechanically and electrically compatible, though design requalification may be required for flight or safety-critical use cases.
JANTX1N5550US 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):
- 200 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 @ 200 V
- Capacitance @ Vr, F:
- 92pF @ 5V, 1MHz
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/420
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
JANTX1N5550US FAQ
1.How can I place an order for JANTX1N5550US through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5550US 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 JANTX1N5550US reliable?
The price and inventory of JANTX1N5550US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5550US is usually 5 days.
3.What payment methods are accepted for JANTX1N5550US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5550US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5550US?
JANTX1N5550US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5550US 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 JANTX1N5550US?
For technical support, including JANTX1N5550US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5550US requirements.
6.How does Aetrix verify that JANTX1N5550US is sourced from the original manufacturer or authorized distributors?
All JANTX1N5550US 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 JANTX1N5550US meets industry standards.
7.What is the process for return or replacement of JANTX1N5550US?
All JANTX1N5550US units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5550US, 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 JANTX1N5550US part is unused and in its original packaging.
Return procedure for JANTX1N5550US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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