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Microchip Technology JANTX1N4622-1/TR
- Part No.:
- JANTX1N4622-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4622-1/TR.pdf
- Description:
- DIODE ZENER 3.9V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,293
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Product details
Overview
JANTX1N4622-1/TR from Microsemi is a 500 mW, 3.9 V ±5% metallurgically bonded glass Zener diode in DO-35 axial package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense systems. It delivers 250 mA Zener test current, 1650 Ω dynamic impedance at IZT, and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the JANTX1N4622-1/TR datasheet, JANTX1N4622-1/TR pinout, JANTX1N4622-1/TR application, or JANTX1N4622-1/TR equivalent, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W junction-to-lead), noise density (1 µV/√Hz), and MIL-qualified reliability level - all critical for precision reference and radiation-hardened designs.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference with cathode-band polarity marking. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and mechanical stress, supporting operation up to 175 °C junction temperature.
The JANTX1N4622-1/TR exhibits a temperature coefficient of –0.060 %/°C and maximum reverse leakage of 2.5 µA at 2.0 V, enabling low-drift regulation in wide-temperature environments without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V ±5% at 250 mA test current - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation | 500 mW at 25 °C lead temperature - supports continuous regulation in compact through-hole layouts |
| Dynamic Impedance ZZT | 1650 Ω at 250 mA - indicates moderate AC impedance affecting regulation ripple rejection |
| Noise Density ND | 1 µV/√Hz at 250 mA - enables low-noise analog references in precision instrumentation |
| Temp Coefficient αVZ | –0.060 %/°C - provides predictable, negative drift for temperature-compensated circuits |
| Reverse Leakage IR | 2.5 µA max at 2.0 V - ensures minimal standby current in low-power bias networks |
| Junction Temp Range | –65 °C to +175 °C - validated for extreme-environment operation including space-grade thermal cycling |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction. Cathode identified by single black band; banded end is positive during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential; establishes return path for Zener current |
| Cathode | Regulated output node | Banded terminal supplies stable 3.9 V when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace avionics and military electronics requiring traceable screening and lot control |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock, ensuring long-term parameter stability |
| Low noise density (1 µV/√Hz) | Supports use in high-resolution ADC references and low-phase-noise oscillator biasing |
| Hermetic glass encapsulation | Prevents moisture ingress and parametric shift over decades in sealed enclosures |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for LEO satellite subsystems |
Applications
| Avionics Power Monitoring | Satellite Onboard Computer Reference |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in flight control computers using resistor-divider + comparator architecture. IC Role / Device Role / Timing Role: Provides precise 3.9 V reference for comparator threshold setting against scaled bus voltage. Use Value: ±5% VZ tolerance and –0.060 %/°C tempco ensure <±20 mV drift over –55 °C to +125 °C operational range. | Use Scenario: Biasing voltage reference inputs in radiation-tolerant ADCs within satellite telemetry modules. IC Role / Device Role / Timing Role: Serves as low-noise, radiation-hardened Zener source for ADC internal reference buffer. Use Value: 1 µV/√Hz noise density and inherent TID hardness maintain SNR > 16-bit effective resolution. |
| Ground-Based Radar RF Bias Supply | Tactical Radio Transceiver Protection |
Use Scenario: Stabilizing gate bias for GaN power amplifiers in pulsed radar front-ends operating at 100 °C ambient. IC Role / Device Role / Timing Role: Regulates fixed bias voltage for amplifier quiescent current control under thermal stress. Use Value: 175 °C max junction rating and 250 °C/W RθJL allow direct mounting to heatsink without derating below 100 °C case. | Use Scenario: Clamping transient overvoltage on microcontroller I/O lines during ESD events in handheld radios. IC Role / Device Role / Timing Role: Functions as low-capacitance (≈2 pF) transient suppressor in series with signal line. Use Value: Minimal capacitance preserves RF signal integrity up to 2.4 GHz while meeting MIL-STD-750 ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4622US | Same 3.9 V Zener, DO-213AA surface-mount package; no MIL qualification | Lacks JANTX screening and hermetic glass seal - unsuitable for flight-critical hardware | Select only for commercial-grade PCB space constraints where reliability requirements are relaxed |
| JANTXV1N4622-1 | Identical electrical specs but qualified to JANTXV level with enhanced screening and tighter lot traceability | Required for programs mandating extended burn-in, radiation testing, and full DSCC certification | Choose when program spec explicitly requires JANTXV-level documentation and test reports |
Compared with JANTX1N4622-1/TR, the 1N4622US offers footprint reduction but sacrifices MIL reliability and hermeticity, while JANTXV1N4622-1 adds cost and lead time for verified high-reliability assurance - making JANTX1N4622-1/TR the optimal balance for JANTX-tier avionics BOMs.
Availability
JANTX1N4622-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite onboard computer reference, and ground-based radar RF bias supply requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4622-1/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 manufacturer specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The 1N46xx-1 series was designed specifically for military and space applications requiring MIL-PRF-19500/435 compliance, hermetic sealing, and guaranteed performance across –65 °C to +175 °C.
FAQ
What is the Zener voltage tolerance for JANTX1N4622-1/TR?
JANTX1N4622-1/TR has a nominal Zener voltage of 3.9 V with a ±5% tolerance, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This tolerance applies at 250 mA test current and 25 °C ambient, and is consistent with the standard JAN/JANTX family specification for the 1N4614–1N4627 series.
Is JANTX1N4622-1/TR RoHS compliant?
No, JANTX1N4622-1/TR is not RoHS compliant. Per the datasheet nomenclature guide, RoHS-compliant versions carry the "e3" suffix (e.g., 1N4622-1e3) and are available only in commercial grade. The JANTX prefix denotes military-qualified parts with tin-lead plating, which falls outside RoHS exemption scope.
What is the maximum Zener current IZM for JANTX1N4622-1/TR?
The maximum Zener current IZM for JANTX1N4622-1/TR is 80.0 mA, as listed in the Electrical Characteristics table. This value corresponds to the current at which the device reaches its rated 500 mW power dissipation at 25 °C lead temperature, before linear derating begins above 50 °C.
Does JANTX1N4622-1/TR have a specified noise density?
Yes, JANTX1N4622-1/TR has a maximum noise density of 1 µV/√Hz at 250 mA Zener test current, per the Electrical Characteristics table. This value is measured in the 1 kHz–3 kHz bandpass and reflects the device's suitability for low-noise analog reference applications.
What packaging option does JANTX1N4622-1/TR use?
JANTX1N4622-1/TR uses the DO-35 (DO-204AH) axial-leaded, hermetically sealed glass package. The "TR" suffix indicates tape-and-reel packaging per EIA-296, intended for automated assembly, while the body retains the standard 0.2 g weight and 1.0–1.5 inch lead length per package drawings.
JANTX1N4622-1/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:
- ±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/TR FAQ
1.How can I place an order for JANTX1N4622-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4622-1/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 JANTX1N4622-1/TR reliable?
The price and inventory of JANTX1N4622-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4622-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4622-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4622-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4622-1/TR?
JANTX1N4622-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4622-1/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 JANTX1N4622-1/TR?
For technical support, including JANTX1N4622-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4622-1/TR requirements.
6.How does Aetrix verify that JANTX1N4622-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4622-1/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 JANTX1N4622-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4622-1/TR?
All JANTX1N4622-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4622-1/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 JANTX1N4622-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4622-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4622-1/TR Tags
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