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Microchip Technology JANTX1N4622D-1
- Part No.:
- JANTX1N4622D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4622D-1.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,439
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Product details
Overview
JANTX1N4622D-1 from Microsemi is a 1% tolerance, 3.9 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4622D-1 datasheet, JANTX1N4622D-1 pinout, JANTX1N4622D-1 application, or JANTX1N4622D-1 equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (1650 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (–0.060 %/°C), and hermetic DO-35 packaging for stable operation across –65 °C to +175 °C.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 3.9 V at 250 mA test current, exhibiting low noise density (1 µV/√Hz) and negative temperature coefficient (–0.060 %/°C), making it suitable for low-drift reference circuits in analog instrumentation and avionics power conditioning.
Its metallurgical bond construction ensures mechanical robustness and long-term stability under thermal cycling and radiation exposure, while the DO-35 glass package provides hermetic sealing and ESD immunity per MIL-STD-750 method 1020 - critical for mission-critical systems requiring MIL-qualified components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V ±1% at 250 mA - enables precise voltage clamping in regulated power rails where tight tolerance is required for ADC references or sensor biasing. |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - supports continuous operation in high-temperature environments when mounted on standard FR4 PCBs. |
| Dynamic Impedance ZZT | 1650 Ω @ 250 mA - defines regulation stiffness; lower values improve load regulation but this value reflects trade-off for low-voltage Zener stability. |
| Noise Density | 1 µV/√Hz - exceptionally low for sub-4 V Zeners, minimizing interference in precision analog front-ends and low-noise voltage references. |
| Temp. Coefficient αVZ | –0.060 %/°C - predictable negative drift allows compensation in multi-Zener reference designs or temperature-stable bias networks. |
| Reverse Leakage IR | 2.5 µA @ 3.5 V - ensures minimal quiescent current draw in standby mode, critical for battery-backed or low-power monitoring circuits. |
| Max Zener Current IZM | 80 mA - sets absolute upper limit for safe DC conduction without exceeding 500 mW rating at elevated temperatures. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lowest potential node; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node; must be held ≥3.9 V above anode to maintain breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for aerospace and defense applications requiring assured reliability and lot-level documentation. |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision reference designs; eliminates need for post-assembly trimming in many analog subsystems. |
| Metallurgical bond construction | Prevents interfacial degradation under thermal stress, ensuring long-term parameter stability in cyclic temperature environments. |
| Hermetic DO-35 glass package | Provides immunity to moisture ingress and atmospheric corrosion, extending operational life in harsh environmental conditions. |
| Low noise density (1 µV/√Hz) | Enables use in ultra-low-noise analog signal chains such as precision DAC buffers or sensor excitation sources without added filtering. |
Applications
| Aerospace Power Conditioning | Avionics Reference Supply |
|---|---|
Use Scenario: Regulating auxiliary 3.9 V rail in flight control computer power distribution units exposed to wide thermal swings and vibration. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for op-amps and comparators in analog monitoring circuits. Use Value: JANTX1N4622D-1's –0.060 %/°C tempco and MIL-qualified construction ensure <±20 mV drift over –55 °C to +125 °C operating range. | Use Scenario: Generating precision 3.9 V reference for analog-to-digital conversion in inertial measurement unit (IMU) signal conditioning. IC Role / Device Role / Timing Role: Low-noise Zener reference source feeding ADC reference input and sensor excitation circuitry. Use Value: 1 µV/√Hz noise density prevents quantization error increase in 16-bit+ ADCs, preserving effective resolution. |
| Defense System Bias Networks | Satellite Onboard Telemetry |
Use Scenario: Providing stable bias voltage for RF amplifier stages in secure radio transceivers deployed in ground vehicles. IC Role / Device Role / Timing Role: Voltage clamp protecting sensitive RF IC inputs from transient overvoltage while maintaining DC bias point. Use Value: Hermetic DO-35 package and JANTX screening ensure survivability during ESD events and electromagnetic pulse (EMP) exposure. | Use Scenario: Regulating voltage for telemetry sensor interface circuits in low-earth orbit (LEO) satellite payloads subject to total ionizing dose (TID). IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining reference integrity in space-grade power management modules. Use Value: Inherent radiation hardness per Microsemi MicroNote 050 allows operation up to 100 krad(Si) without parameter shift beyond spec limits. |
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. | Used where board space is constrained and reflow assembly is preferred over through-hole mounting. | Select 1N4622US-1 only when automated SMT placement and smaller footprint are required; not drop-in compatible with JANTX1N4622D-1. |
| JAN1N4622D-1 | Identical electrical and mechanical specs, but qualified only to JAN level (less stringent screening than JANTX). | Acceptable for non-critical military subsystems where full JANTX screening is not mandated by program requirements. | Choose JAN1N4622D-1 if cost sensitivity outweighs need for extended burn-in and parametric testing per JANTX spec. |
Compared with JANTX1N4622D-1, 1N4622US-1 trades axial-leaded reliability for SMT manufacturability, while JAN1N4622D-1 reduces qualification rigor to lower cost - both retain identical Zener voltage, tolerance, and noise performance for functional substitution in less demanding environments.
Availability
JANTX1N4622D-1 is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics reference supply, and defense system bias networks requiring stable component supply with full MIL-qualified traceability and lot-controlled delivery.
Supply support for JANTX1N4622D-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, radiation-hardened, and MIL-qualified analog and mixed-signal components.
The 1N46xx-1 series was designed specifically for military and aerospace voltage reference and regulation applications where long-term stability, hermetic packaging, and rigorous qualification per MIL-PRF-19500/435 are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4622D-1?
JANTX1N4622D-1 has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its part number per Microsemi's nomenclature. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2, where VZ = 3.9 V at IZT = 250 mA with ±1% tolerance. The tighter tolerance reduces calibration burden in precision analog circuits compared to standard 5% variants like JANTX1N4622-1.
Is JANTX1N4622D-1 RoHS compliant?
No, JANTX1N4622D-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, not for MIL-qualified levels including JAN, JANTX, JANTXV, or JANS. JANTX1N4622D-1 uses tin-lead plating per MIL-STD-750 and retains lead content to meet military solderability and reliability requirements.
What is the maximum operating temperature for JANTX1N4622D-1?
JANTX1N4622D-1 has a junction and storage temperature range of –65 °C to +175 °C, as specified in the Maximum Ratings table on page 1 of T4-LDS-0245-2. Its power dissipation linearly derates from 500 mW at 25 °C to zero at 175 °C, enabling reliable operation in extreme environments such as engine-mounted avionics or satellite thermal control systems.
Does JANTX1N4622D-1 have radiation hardness?
Yes, JANTX1N4622D-1 is inherently radiation hard, as documented in Microsemi MicroNote 050 referenced in the Applications/Benefits section. Its metallurgically bonded structure and glass DO-35 package provide resistance to total ionizing dose (TID), making it suitable for space and nuclear applications where parameter stability under radiation exposure is critical.
What does the "JANTX" prefix indicate for JANTX1N4622D-1?
The "JANTX" prefix indicates that JANTX1N4622D-1 is qualified to the JANTX level per MIL-PRF-19500/435 - a mid-tier military reliability standard involving extended burn-in, temperature cycling, and parametric testing beyond commercial or JAN levels. This ensures enhanced screening for mission-critical applications in defense and aerospace systems.
JANTX1N4622D-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:
- ±1%
- 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)
JANTX1N4622D-1 FAQ
1.How can I place an order for JANTX1N4622D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4622D-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 JANTX1N4622D-1 reliable?
The price and inventory of JANTX1N4622D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4622D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4622D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4622D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4622D-1?
JANTX1N4622D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4622D-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 JANTX1N4622D-1?
For technical support, including JANTX1N4622D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4622D-1 requirements.
6.How does Aetrix verify that JANTX1N4622D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4622D-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 JANTX1N4622D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4622D-1?
All JANTX1N4622D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4622D-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 JANTX1N4622D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4622D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4622D-1 Tags
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