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Microchip Technology JANTX1N4622-1
- Part No.:
- JANTX1N4622-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4622-1.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,616
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Product details
Overview
JANTX1N4622-1 from Microsemi is a 500 mW, 3.9 V ±5% metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability regulation. It delivers 250 mA Zener test current, 1650 Ω dynamic impedance at IZT, 2.5 µA max reverse leakage at 3.0 V, and -0.060 %/°C temperature coefficient - used in precision voltage reference circuits for aerospace power conditioning.
For engineers reviewing the JANTX1N4622-1 datasheet, JANTX1N4622-1 pinout, JANTX1N4622-1 application, or JANTX1N4622-1 equivalent, key selection criteria include Zener voltage tolerance, MIL-qualified reliability grade, thermal resistance (250 °C/W junction-to-lead), noise density (1 µV/√Hz), and DO-35 axial-lead mechanical compatibility.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures stable Zener voltage under thermal cycling and radiation exposure per MicroNote 050.
The JANTX1N4622-1 exhibits low-noise performance (1 µV/√Hz at 25 °C) and tight thermal coefficient (-0.060 %/°C), enabling use in analog reference chains where drift and noise directly impact ADC accuracy and sensor signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V ±5% at 250 mA - defines regulated output voltage with predictable tolerance across military temperature range. |
| Power Dissipation | 500 mW @ TC = 25 °C - supports stable regulation in compact through-hole layouts with linear derating above 50 °C. |
| Zener Impedance ZZT | 1650 Ω at 250 mA - indicates moderate AC impedance affecting regulation stability under varying load currents. |
| Reverse Leakage IR | 2.5 µA max @ 3.0 V - ensures minimal parasitic current draw in standby or low-power bias networks. |
| Noise Density ND | 1 µV/√Hz - enables low-noise reference generation for precision instrumentation amplifiers and 16-bit+ data converters. |
| Temp Coefficient αVZ | -0.060 %/°C - provides predictable, negative drift behavior for temperature-compensated reference designs. |
| Junction Temp Range | -65 to +175 °C - supports operation in extended-environment avionics, downhole tools, and space-qualified subsystems. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode identified by single black band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common or ground plane; serves as voltage reference return path in shunt regulator topology. |
| Cathode | Zener regulation terminal / input for reverse-bias voltage | Connected to unregulated supply; clamps voltage at 3.9 V when reverse current exceeds knee region (IZK). |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring documented reliability assurance. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and sustained high-temperature operation (>150 °C). |
| Low noise density (1 µV/√Hz) | Reduces broadband voltage noise injection into sensitive analog front-ends without external filtering. |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments (e.g., marine avionics). |
| Non-ESD-sensitive design | Withstands handling per MIL-STD-750 Method 1020 without protection circuitry - simplifies board-level ESD control. |
Applications
| Aerospace Power Reference | Downhole Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.9 V reference for ADCs and DACs in satellite telemetry modules operating across -55 to +125 °C. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for analog signal chain components. Use Value: JANTX1N4622-1's -0.060 %/°C tempco and 1 µV/√Hz noise enable <±0.5% total error over full temperature range without trimming. | Use Scenario: Biasing piezoresistive pressure transducers in oil/gas well logging tools exposed to 175 °C ambient. IC Role / Device Role / Timing Role: Precision Zener reference establishing excitation voltage for Wheatstone bridge sensors. Use Value: Hermetic DO-35 package and JANTX qualification ensure parametric stability after 1000+ thermal cycles at 175 °C. |
| Radiation-Hardened Instrumentation | Military Radio Voltage Clamp |
Use Scenario: Low-noise reference in nuclear facility radiation monitoring systems requiring TID > 100 krad(Si). IC Role / Device Role / Timing Role: Primary voltage reference for gamma spectrometer front-end amplifiers. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in mixed-field environments. | Use Scenario: Overvoltage clamp on 5 V supply rails of handheld tactical radios subjected to automotive battery transients. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting RF power amplifier bias circuitry. Use Value: 500 mW rating and 250 °C/W RθJL allow reliable clamping of 100 ms 12 V surges without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4622US (Microchip) | Same 3.9 V nominal, but commercial-grade (non-MIL-qualified); DO-213AA surface-mount package. | Lacks JANTX screening and hermetic glass seal; unsuitable for high-reliability or extended-temperature deployments. | Select only for cost-sensitive commercial PCBs where reflow compatibility and space savings outweigh MIL-spec requirements. |
| JAN1N4622-1 (Microsemi) | Identical electrical specs and DO-35 package, but qualified only to JAN level (less stringent screening than JANTX). | Lower test coverage and lot acceptance criteria; not approved for mission-critical flight hardware per DoD standards. | Acceptable for ground-support equipment or non-flight prototypes where full JANTX documentation is not mandated. |
Compared with 1N4622US and JAN1N4622-1, the JANTX1N4622-1 uniquely combines MIL-PRF-19500/435 JANTX qualification, hermetic DO-35 packaging, and -0.060 %/°C tempco - making it the only option certified for flight-critical voltage references in Class S space systems.
Availability
JANTX1N4622-1 is available at Aetrix Electronics and suitable for aerospace power reference, downhole sensor biasing, radiation-hardened instrumentation, and military radio voltage clamp applications requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4622-1 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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, discrete devices, and radiation-hardened components for defense, aerospace, and industrial markets.
The JANTX1N4622-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where parametric stability, long-term reliability, and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4622-1?
JANTX1N4622-1 has a nominal Zener voltage of 3.9 V with a ±5% tolerance, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at 250 mA test current and 25 °C ambient temperature, consistent with JEDEC registration for the 1N4614–1N4627 series.
Is JANTX1N4622-1 RoHS compliant?
No, JANTX1N4622-1 is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2, the "e3" suffix denotes RoHS compliance, which is available only on commercial-grade versions. JANTX1N4622-1 carries no RoHS suffix and uses tin-lead plating per MIL-STD-750.
What is the maximum Zener current IZM for JANTX1N4622-1?
The maximum Zener current IZM for JANTX1N4622-1 is 80.0 mA, as listed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This value corresponds to the rated average power dissipation of 500 mW at 3.9 V, assuming ideal thermal conditions at 25 °C.
Does JANTX1N4622-1 have a specified noise density?
Yes, JANTX1N4622-1 has a maximum noise density of 1 µV/√Hz at 250 mA test current and 25 °C, per the Electrical Characteristics table. This value falls within the "1 V to 6.8 V" group where noise density drops rapidly below 6.8 V, enabling low-noise analog reference design.
What package type does JANTX1N4622-1 use?
JANTX1N4622-1 uses the DO-35 (DO-204AH) hermetically sealed axial-leaded glass package, as confirmed in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2. The package features tin-lead plating, cathode band marking, and approximate weight of 0.2 grams.
JANTX1N4622-1 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:
- ±5%
- 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)
JANTX1N4622-1 FAQ
1.How can I place an order for JANTX1N4622-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4622-1 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 JANTX1N4622-1 reliable?
The price and inventory of JANTX1N4622-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4622-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4622-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4622-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4622-1?
JANTX1N4622-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4622-1 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 JANTX1N4622-1?
For technical support, including JANTX1N4622-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4622-1 requirements.
6.How does Aetrix verify that JANTX1N4622-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4622-1 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 JANTX1N4622-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4622-1?
All JANTX1N4622-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4622-1, 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 JANTX1N4622-1 part is unused and in its original packaging.
Return procedure for JANTX1N4622-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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