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Microchip Technology JANS1N4622D-1/TR
- Part No.:
- JANS1N4622D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4622D-1/TR.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,044
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Product details
Overview
JANS1N4622D-1/TR from Microsemi is a 3.9 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 axial package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 1650 Ω dynamic impedance and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the JANS1N4622D-1/TR datasheet, JANS1N4622D-1/TR pinout, JANS1N4622D-1/TR application, or JANS1N4622D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic glass packaging, MIL-qualified reliability level, and low noise density (1 µV/√Hz).
Technical Context
This device functions as a precision shunt voltage regulator in feedback loops and reference circuits where stability under extreme thermal and radiation environments is mandatory. Its internal metallurgical bond ensures mechanical robustness and long-term parameter retention, while the DO-35 glass package provides hermetic sealing and ESD immunity per MIL-STD-750 Method 1020.
The JANS1N4622D-1/TR exhibits a temperature coefficient of –0.060 %/°C and maximum reverse leakage of 2.5 µA at 2.5 V, supporting low-drift biasing in analog signal chains. Its 1650 Ω dynamic impedance at 250 mA enables predictable regulation behavior under varying load conditions typical in avionics power supervisors and sensor excitation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V ±1% at 250 mA - ensures tight reference accuracy for critical biasing and calibration circuits. |
| Power Dissipation | 500 mW @ 25 °C - supports continuous operation in compact, conduction-cooled military modules. |
| Dynamic Impedance ZZT | 1650 Ω @ 250 mA - defines regulation slope and output impedance in shunt reference configurations. |
| Reverse Leakage IR | 2.5 µA @ 2.5 V - minimizes error current in high-impedance reference nodes. |
| Noise Density | 1 µV/√Hz - enables low-noise performance in precision analog front-ends and ADC references. |
| Temp Coefficient αVZ | –0.060 %/°C - enables predictable drift compensation in wide-temperature-range systems. |
| Junction Temp Range | –65 °C to +175 °C - qualifies for use in engine-mounted electronics and space-grade subsystems. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener operation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for regulated output. |
| Cathode | Zener regulation terminal | Banded end; connected to input supply or bias rail; maintains 3.9 V drop when reverse-biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Guarantees screening, testing, and traceability for flight-critical and nuclear-hardened systems. |
| Metallurgical bond construction | Prevents interfacial degradation under thermal cycling and mechanical shock, ensuring long-term Zener voltage stability. |
| Hermetic glass DO-35 package | Eliminates moisture ingress and corrosion risk in humid, salt-laden, or vacuum environments. |
| 1% Zener voltage tolerance | Reduces need for post-calibration trimming in precision reference designs, lowering BOM and test cost. |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for LEO and GEO satellite power systems. |
Applications
| Aerospace Power Supervision | Defense Radar Biasing |
|---|---|
Use Scenario: Monitoring 28 V DC bus in satellite power distribution units to trigger undervoltage lockout before critical subsystem failure. IC Role / Device Role / Timing Role: Shunt voltage reference in comparator-based supervision circuit; sets precise trip threshold at 3.9 V. Use Value: 1% tolerance and –0.060 %/°C tempco ensure trip point remains within ±20 mV over –55 °C to +125 °C operating range. | Use Scenario: Providing stable bias voltage to GaAs MMIC amplifiers in phased-array radar T/R modules exposed to thermal cycling and vibration. IC Role / Device Role / Timing Role: Low-noise Zener reference (1 µV/√Hz) for amplifier quiescent current setting network. Use Value: Metallurgical bond and hermetic DO-35 package prevent parameter shift after 1000+ thermal cycles between –65 °C and +175 °C. |
| Nuclear Instrumentation | Avionics Sensor Excitation |
Use Scenario: Generating calibrated reference voltage for gamma spectrometer pulse-height analyzers operating in high-radiation reactor containment zones. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator supplying fixed 3.9 V to ADC reference input and op-amp bias rails. Use Value: Inherent TID hardness per MicroNote 050 eliminates need for shielding or derating, simplifying enclosure design. | Use Scenario: Exciting strain-gauge bridges in flight control surface position sensors subjected to rapid altitude-induced pressure and temperature transients. IC Role / Device Role / Timing Role: Precision voltage reference in Wheatstone bridge excitation circuit; regulates bridge supply independent of 270 VAC rectified bus ripple. Use Value: 1650 Ω dynamic impedance ensures <±0.5 mV output variation across 10–100 mA load current swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4622D-1 | Same electrical specs but qualified to JANTXV level (lower screening rigor than JANS); no radiation hardness documentation provided. | Suitable for ground-based military systems where full JANS radiation assurance is not required. | Select when cost sensitivity outweighs need for space-qualified radiation hardness and extended temperature validation. |
| 1N4622US-1 | Same Zener voltage and tolerance, but in DO-213AA surface-mount package; lacks MIL-PRF-19500 qualification and hermetic glass seal. | Applicable in commercial or industrial PCBs where automated assembly and board space constrain axial leaded devices. | Choose only for non-mission-critical, non-radiation environments where RoHS compliance and SMT placement are primary drivers. |
Compared with JANTXV1N4622D-1 and 1N4622US-1, the JANS1N4622D-1/TR uniquely combines JANS-level screening, documented radiation hardness, and hermetic DO-35 packaging-making it the sole option for flight hardware requiring TID resilience and full MIL-PRF-19500/435 traceability.
Availability
JANS1N4622D-1/TR is available at Aetrix Electronics and suitable for aerospace power supervision, defense radar biasing, and nuclear instrumentation requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANS1N4622D-1/TR 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade analog and mixed-signal components.
The 1N46xx series was designed specifically for military and space applications demanding guaranteed parametric stability, hermetic packaging, and full MIL-PRF-19500 qualification - with JANS1N4622D-1/TR representing the highest reliability tier in that family.
FAQ
What is the Zener voltage and tolerance of JANS1N4622D-1/TR?
The JANS1N4622D-1/TR has a nominal Zener voltage of 3.9 V with a tight ±1% tolerance at 250 mA test current, as specified in the Microsemi T4-LDS-0245-2 datasheet. This tolerance is achieved through precision process control and JANS-level screening, making JANS1N4622D-1/TR suitable for applications requiring minimal post-manufacturing calibration.
Is JANS1N4622D-1/TR radiation hardened?
Yes, JANS1N4622D-1/TR is inherently radiation hard per Microsemi MicroNote 050, a documented characteristic of its metallurgically bonded structure and hermetic DO-35 glass package. Unlike commercial Zeners, JANS1N4622D-1/TR does not require external shielding or derating for total ionizing dose (TID) exposure in low-earth orbit or nuclear environments.
What does the "D" in JANS1N4622D-1/TR signify?
The "D" in JANS1N4622D-1/TR denotes 1% Zener voltage tolerance per the Microsemi part nomenclature guide in T4-LDS-0245-2. It is distinct from "C" (2%) and blank (5%), and applies exclusively to the JANS reliability level - confirming that JANS1N4622D-1/TR meets this tighter spec under full MIL-PRF-19500/435 screening.
What is the maximum power dissipation of JANS1N4622D-1/TR?
JANS1N4622D-1/TR is rated for 500 mW average power dissipation at 25 °C lead temperature, with linear derating to zero at 175 °C. The datasheet specifies thermal resistance junction-to-lead as 250 °C/W at 3/8″ lead length, enabling accurate thermal modeling in conduction-cooled chassis mounts where JANS1N4622D-1/TR is commonly deployed.
Does JANS1N4622D-1/TR have RoHS compliance?
No, JANS1N4622D-1/TR is not RoHS compliant. Per the T4-LDS-0245-2 datasheet, RoHS-compliant versions (suffix "e3") are available only on commercial-grade parts; JANS-level devices retain tin-lead plating to meet MIL-STD-750 solderability requirements and ensure proven reliability in legacy aerospace assemblies.
JANS1N4622D-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.65 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4622D-1/TR FAQ
1.How can I place an order for JANS1N4622D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4622D-1/TR 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 JANS1N4622D-1/TR reliable?
The price and inventory of JANS1N4622D-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4622D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4622D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4622D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4622D-1/TR?
JANS1N4622D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4622D-1/TR 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 JANS1N4622D-1/TR?
For technical support, including JANS1N4622D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4622D-1/TR requirements.
6.How does Aetrix verify that JANS1N4622D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4622D-1/TR 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 JANS1N4622D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4622D-1/TR?
All JANS1N4622D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4622D-1/TR, 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 JANS1N4622D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4622D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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