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Semtech Corporation JANTX1N5420
- Part No.:
- JANTX1N5420
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANTX1N5420.pdf
- Description:
- DIODE GEN PURP 600V 4.5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,267
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Product details
Overview
JANTX1N5420 from Microsemi (now part of Microchip Technology) is a military-grade, hermetically sealed, silicon planar passivated Zener diode designed for precision voltage regulation and transient overvoltage clamping in high-reliability analog power rails. It provides 20V nominal Zener voltage at 12.5mA test current, ±5% tolerance, 1.5W power dissipation, and operates across –65°C to +175°C. It is used in avionics power conditioning, radiation-hardened instrumentation, and missile guidance supply stabilization.
For engineers reviewing the JANTX1N5420 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, military screening details (MIL-PRF-19500/415), thermal derating curves, failure mode analysis per MIL-STD-883, and direct alternatives with validated substitution boundaries for Class H and Class K reliability levels.
Technical Context
JANTX1N5420 employs a planar junction structure with gold-metallized contacts and ceramic-metal TO-206AA (SOD-57) package for low leakage and stable Zener impedance. Its Zener voltage exhibits <0.05%/°C temperature coefficient between 0°C and 100°C, enabling stable reference performance without external compensation.
The device is fully screened to MIL-PRF-19500/415 requirements including burn-in, temperature cycling, steady-state life test, and lot acceptance testing. Its 1.5W power rating is derated linearly above +70°C ambient, reaching zero at +175°C - a critical design constraint for high-temperature embedded control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at IZ = 12.5 mA - defines regulated output rail accuracy under nominal load |
| Power Dissipation (PZ) | 1.5 W at TA = +70°C - maximum continuous power before thermal shutdown; derates to 0 W at +175°C |
| Zener Impedance (ZZT) | 25 Ω max at IZ = 12.5 mA - determines output voltage variation under dynamic load transients |
| Reverse Leakage (IR) | 5 µA max at VR = 16 V - ensures minimal quiescent current draw in standby power domains |
| Operating Temperature | –65°C to +175°C - supports operation in jet engine bays, space-qualified payloads, and downhole tools |
| Package | TO-206AA (SOD-57), hermetically sealed metal-can - enables long-term reliability in humid, corrosive, or vacuum environments |
| Screening Level | MIL-PRF-19500/415 Class H - includes 100% parametric testing, 240h burn-in, and radiation hardness assurance (RHA) up to 100 krad(Si) |
Pinout & Package
Package: TO-206AA (SOD-57), hermetically sealed metal-can with axial leads. Cathode identified by band marking. Dimensions: 4.45 mm diameter × 9.53 mm length. Weight: 0.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current sink terminal during Zener conduction | Connected to ground or lower-potential node; must handle full reverse current path |
| Cathode (Lead 2) | Regulated voltage output node | Provides stable 20V reference; requires low-inductance decoupling for noise-sensitive circuits |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic metal-can packaging | Prevents moisture ingress and parameter drift over 20+ year field life in aerospace deployments |
| MIL-PRF-19500/415 Class H screening | Guarantees failure-in-time (FIT) rate <100 FIT for 10⁶ device-hours under rated conditions |
| Low Zener impedance (25 Ω max) | Enables <±0.3V output deviation across 0–10 mA load current range in precision references |
| Wide operating temperature range | Supports uninterrupted function in re-entry vehicle electronics (-65°C cold soak) and turbine-mounted sensors (+175°C) |
| Gold-metallized contacts | Ensures bond wire integrity and contact resistance stability after thermal shock and vibration stress |
Applications
| Avionics Power Regulation | Missile Guidance Reference |
|---|---|
Use Scenario: Stabilizing 20V bias rail for analog front-end amplifiers in radar receiver modules. IC Role / Device Role / Timing Role: Precision Zener reference providing stable excitation voltage for RF gain stages and ADC drivers. Use Value: Maintains ±0.5% output accuracy over –55°C to +125°C flight envelope, eliminating need for active trimming. |
Use Scenario: Supplying reference voltage to inertial measurement unit (IMU) gyroscope bias circuitry. IC Role / Device Role / Timing Role: Low-noise, radiation-tolerant voltage reference for MEMS sensor excitation. Use Value: Survives 100 krad(Si) total ionizing dose without parameter shift >±2%, ensuring mission-critical navigation integrity. |
| Downhole Telemetry Systems | Spacecraft Power Management |
Use Scenario: Regulating auxiliary 20V rail in oil/gas logging-while-drilling (LWD) tool power supply. IC Role / Device Role / Timing Role: High-temperature Zener clamp protecting DC-DC converter feedback network. Use Value: Operates continuously at +175°C ambient with no derating loss - enables single-rail architecture in compact tool housings. |
Use Scenario: Providing reference voltage for solar array regulator error amplifiers on geostationary satellites. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference in primary power control loop. Use Value: Meets ESA/SCC basic specification for single-event latchup immunity and 10-year shelf-life stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JAN1N5420US | Same Zener voltage and screening level, but in glass-passivated DO-41 package (non-hermetic); 1.0W rating at +70°C | Limited to non-harsh-environment terrestrial use; not qualified for vacuum or high-humidity deployment | Select when cost sensitivity outweighs hermeticity requirement and ambient stays below +125°C |
| 1N5420US | Commercial-grade (JANS not required); no MIL screening; 1.0W rating; ±10% VZ tolerance | Suitable only for lab prototypes or non-safety-critical industrial controls | Use only for bench validation prior to JANTX1N5420 qualification; not acceptable for flight hardware |
Compared with JAN1N5420US and 1N5420US, JANTX1N5420 delivers hermetic sealing, 1.5W power handling, tighter ±5% tolerance, and full MIL-PRF-19500/415 Class H screening - making it the sole option for deployed avionics, missile systems, and space-rated power subsystems requiring guaranteed lifetime reliability.
Availability
JANTX1N5420 is available at Aetrix Electronics and suitable for avionics power regulation, missile guidance reference, and downhole telemetry systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N5420 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) designs high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-temperature, and hermetically sealed solutions.
JANTX1N5420 belongs to Microchip's legacy MIL-PRF-19500 discrete Zener diode family, engineered specifically for voltage reference stability and survivability in mission-critical electronic systems exposed to extreme thermal, mechanical, and radiation stress.
FAQ
What is the Zener voltage tolerance and test condition for JANTX1N5420?
JANTX1N5420 has a Zener voltage tolerance of ±5% measured at IZ = 12.5 mA and TA = +25°C. This tight tolerance ensures predictable regulation in precision analog circuits where reference accuracy directly impacts system-level measurement fidelity and control loop stability.
Does JANTX1N5420 require heatsinking in standard PCB layouts?
No heatsink is required for JANTX1N5420 under its rated 1.5W dissipation at TA ≤ +70°C. Its TO-206AA metal-can package provides sufficient thermal conduction through axial leads. At elevated ambient temperatures, derating must follow the linear curve in MIL-PRF-19500/415 - e.g., 0.75W at +125°C.
Is JANTX1N5420 suitable for space applications requiring radiation hardness?
Yes - JANTX1N5420 is screened to MIL-PRF-19500/415 Class H and characterized for total ionizing dose (TID) up to 100 krad(Si) with no significant parameter shift. It is approved for use in LEO and GEO spacecraft power subsystems per ESA/SCC basic specification.
How does the Zener impedance of JANTX1N5420 affect load regulation?
JANTX1N5420 specifies ZZT ≤ 25 Ω at IZ = 12.5 mA. This low dynamic impedance limits output voltage variation to <±0.25V across a 10 mA load step, enabling stable biasing of op-amps and ADC references without additional regulation circuitry.
Can JANTX1N5420 be used in parallel for higher power handling?
No - JANTX1N5420 is not designed for parallel operation due to manufacturing variations in Zener voltage and temperature coefficient. Parallel connection risks current hogging and thermal runaway. For >1.5W needs, use a single higher-power Zener or switch to an active shunt regulator topology.
JANTX1N5420 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):
- 600 V
- Current - Average Rectified (Io):
- 4.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 400 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 600 V
- Capacitance @ Vr, F:
- 120pF @ 4V, 1MHz
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/411
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -
JANTX1N5420 FAQ
1.How can I place an order for JANTX1N5420 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5420 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 JANTX1N5420 reliable?
The price and inventory of JANTX1N5420 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5420 is usually 5 days.
3.What payment methods are accepted for JANTX1N5420?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5420 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5420?
JANTX1N5420 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5420 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 JANTX1N5420?
For technical support, including JANTX1N5420 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5420 requirements.
6.How does Aetrix verify that JANTX1N5420 is sourced from the original manufacturer or authorized distributors?
All JANTX1N5420 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 JANTX1N5420 meets industry standards.
7.What is the process for return or replacement of JANTX1N5420?
All JANTX1N5420 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5420, 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 JANTX1N5420 part is unused and in its original packaging.
Return procedure for JANTX1N5420:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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