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Microchip Technology JANTX1N4622C-1
- Part No.:
- JANTX1N4622C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4622C-1.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,407
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Product details
Overview
JANTX1N4622C-1 from Microsemi is a 500 mW, 3.9 V ±2% metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435. 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 JANTX1N4622C-1 datasheet, JANTX1N4622C-1 pinout, JANTX1N4622C-1 application, or JANTX1N4622C-1 equivalent, key selection criteria include Zener voltage tolerance (±2%), noise density (1 µV/√Hz), thermal resistance (250 °C/W junction-to-lead), and military-grade reliability qualification.
Technical Context
This device functions as a precision shunt voltage regulator in high-reliability analog circuits. Its metallurgical bond construction ensures low noise (1 µV/√Hz at 3.9 V), minimal capacitance, and radiation hardness per MicroNote 050 - critical for aerospace and defense power conditioning.
It operates with cathode-banded polarity and requires reverse-bias configuration. The DO-35 axial-leaded package supports through-hole mounting with tin-lead or RoHS-compliant matte-tin plating, solderable per MIL-STD-750 method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V ±2% at 250 mA - enables precise reference generation in low-voltage analog rails. |
| Power Dissipation | 500 mW @ 25 °C - supports stable regulation under moderate load without forced cooling. |
| Dynamic Impedance ZZT | 1650 Ω @ 250 mA - defines output impedance in regulation region; impacts load regulation error. |
| Noise Density | 1 µV/√Hz @ 25 °C - ultra-low broadband noise suitable for precision reference and sensor biasing. |
| Temp Coefficient αVZ | –0.060 %/°C - negative drift improves stability near room temperature in unheated enclosures. |
| Junction Temp Range | –65 °C to +175 °C - enables operation in extreme environments including avionics and downhole electronics. |
| Reverse Leakage IR | 2.5 µA @ 3.5 V - low leakage preserves accuracy in high-impedance feedback networks. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to system ground or lowest potential node; forms return path for Zener current. |
| Cathode (banded end) | Regulated Output Terminal | Provides stabilized 3.9 V when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring assured reliability. |
| Metallurgical bond construction | Eliminates interfacial voids, reducing long-term parameter drift and enhancing thermal cycling endurance. |
| 1 µV/√Hz noise density | Enables use in low-noise references for ADCs, DACs, and precision instrumentation amplifiers. |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion, supporting >20-year field life in harsh environmental conditions. |
| Non-ESD-sensitive design | Withstands handling without special ESD controls per MIL-STD-750 method 1020, simplifying assembly logistics. |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog front-end circuitry monitoring aircraft bus voltage and temperature sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.9 V for op-amp comparators and ADC input scaling. Use Value: Maintains measurement accuracy across –55 °C to +125 °C ambient with <0.1% drift due to low tempco and hermetic sealing. | Use Scenario: Supplying low-noise bias to radiation-hardened CMOS image sensors in LEO satellites. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing higher-drift alternatives in sensor analog signal chains. Use Value: 1 µV/√Hz noise density prevents SNR degradation in sub-10-bit imaging systems operating in vacuum. |
| Downhole Oilfield Instrumentation | Tactical Radio RF Stage Biasing |
Use Scenario: Stabilizing supply rails for pressure transducers and telemetry modems deployed at 175 °C wellbore temperatures. IC Role / Device Role / Timing Role: High-temperature shunt regulator maintaining reference integrity where active regulators fail. Use Value: Full functionality up to +175 °C junction temperature eliminates need for external thermal derating or heatsinking. | Use Scenario: Providing regulated bias to GaAs FET driver stages in portable HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp protecting RF amplifier inputs during transient events. Use Value: Minimal capacitance (<2 pF typical) avoids detuning of matching networks at frequencies up to 500 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4622US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads. | Requires SMT reflow process; unsuitable for through-hole prototyping or repair. | Select when board space is constrained and automated assembly is used. |
| JANTXV1N4622C-1 | Identical electrical and mechanical specs, but qualified to JANTXV level with enhanced screening and lot traceability. | Required for mission-critical flight hardware where extended burn-in and radiation testing apply. | Select when program mandates JANTXV-level assurance beyond JANTX requirements. |
Compared with JANTX1N4622C-1, the JANTXV variant adds screening rigor without altering performance, while the 1N4622US-1 trades axial-mount flexibility for SMT compatibility - neither is pin-compatible due to differing packages.
Availability
JANTX1N4622C-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and downhole oilfield instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4622C-1 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, emphasizing radiation tolerance, extended temperature operation, and military qualification.
JANTX1N4622C-1 belongs to the 1N4614–1N4627-1 family of metallurgically bonded Zener diodes engineered specifically for precision voltage regulation in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance for JANTX1N4622C-1?
JANTX1N4622C-1 has a nominal Zener voltage of 3.9 V with a tolerance of ±2%, as indicated by the "C" suffix in the part number per Microsemi's nomenclature. This tighter tolerance supports higher-accuracy voltage references compared to standard ±5% variants like JANTX1N4622-1.
Is JANTX1N4622C-1 suitable for high-temperature operation?
Yes, JANTX1N4622C-1 is rated for junction temperatures from –65 °C to +175 °C and is fully characterized across this range. Its metallurgical bond construction and hermetic DO-35 package ensure stable regulation in downhole, avionics, and engine-mounted applications where ambient temperatures exceed 125 °C.
What does the "JANTX" prefix signify for JANTX1N4622C-1?
The "JANTX" prefix indicates that JANTX1N4622C-1 is screened and tested to the JANTX level per MIL-PRF-19500/435, including extended temperature cycling, steady-state life testing, and lot traceability - making it suitable for high-reliability defense and aerospace systems.
Does JANTX1N4622C-1 require a heatsink in standard operation?
No, JANTX1N4622C-1 does not require a heatsink under typical 500 mW operation at 25 °C ambient. Its thermal resistance junction-to-lead is 250 °C/W with 3/8″ lead length, allowing adequate self-cooling in through-hole PCB layouts with standard copper pads per the datasheet derating curve.
How is polarity marked on JANTX1N4622C-1?
JANTX1N4622C-1 uses a cathode band marking on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the anode for proper Zener regulation - incorrect orientation results in forward conduction (~1.1 V drop) instead of regulation.
JANTX1N4622C-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1650 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4622C-1 FAQ
1.How can I place an order for JANTX1N4622C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4622C-1 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 JANTX1N4622C-1 reliable?
The price and inventory of JANTX1N4622C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4622C-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4622C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4622C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4622C-1?
JANTX1N4622C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4622C-1 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 JANTX1N4622C-1?
For technical support, including JANTX1N4622C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4622C-1 requirements.
6.How does Aetrix verify that JANTX1N4622C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4622C-1 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 JANTX1N4622C-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4622C-1?
All JANTX1N4622C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4622C-1, 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 JANTX1N4622C-1 part is unused and in its original packaging.
Return procedure for JANTX1N4622C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4622C-1 Tags
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