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Microchip Technology JANTX1N4624-1/TR
- Part No.:
- JANTX1N4624-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4624-1/TR.pdf
- Description:
- DIODE ZENER 4.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,040
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Product details
Overview
JANTX1N4624-1/TR from Microsemi is a 500 mW, 4.7 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability applications. It delivers stable voltage regulation at 250 mA test current with 1550 Ω dynamic impedance and operates across –65 °C to +175 °C junction temperature range.
For engineers reviewing the JANTX1N4624-1/TR datasheet, JANTX1N4624-1/TR pinout, JANTX1N4624-1/TR application, or JANTX1N4624-1/TR equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (250 °C/W junction-to-lead), noise density (1 µV/√Hz), radiation hardness, and MIL-spec qualification level.
Technical Context
This device functions as a precision shunt voltage regulator in reverse-biased operation, with cathode band indicating polarity. Its metallurgical bond construction ensures low leakage and stable breakdown characteristics under thermal and radiation stress.
It exhibits a temperature coefficient of –0.050,+0.020 %/°C and maximum reverse current of 3.0 µA at 3.0 V, supporting stable regulation across wide current (up to 75 mA max) and temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.7 V ±5% at 250 mA - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous regulation in compact axial layouts with linear derating above 50 °C |
| Dynamic Impedance ZZT | 1550 Ω @ 250 mA - determines output voltage variation under load transients |
| Noise Density | 1 µV/√Hz @ IZT - enables low-noise analog references in precision instrumentation |
| Junction Temp Range | –65 °C to +175 °C - allows deployment in aerospace, downhole, and military environments |
| Thermal Resistance | 250 °C/W junction-to-lead (3/8″ lead length) - informs heatsinking requirements for sustained power operation |
| Reverse Leakage | 3.0 µA @ 3.0 V - ensures minimal quiescent current in battery-powered standby circuits |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead plating; cathode indicated by single black band. Leads are solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail during Zener operation |
| Cathode | Regulated output node | Banded end supplies stable 4.7 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 defense and space programs requiring traceable lot control and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for satellite power systems |
| Low noise density | 1 µV/√Hz enables use in high-resolution ADC references and sensor excitation circuits |
| Hermetic glass seal | Prevents moisture ingress and parameter drift over 20+ year service life in harsh environments |
Applications
| Avionics Power Monitoring | Satellite Bus Voltage Reference |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in aircraft flight control units using resistive divider + comparator. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.7 V threshold for comparator input. Use Value: JANTX1N4624-1/TR's ±5% VZ tolerance and –65 °C to +175 °C operation ensure reliable trip-point accuracy across flight envelope. | Use Scenario: Generating precision bias for radiation-hardened op-amps in satellite telemetry conditioning circuits. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing active regulators where size and single-point failure risk must be minimized. Use Value: 1 µV/√Hz noise density and inherent TID hardness allow direct integration without shielding or redundancy. |
| Downhole Oilfield Sensor Calibration | Tactical Radio RF Stage Biasing |
Use Scenario: Calibrating strain-gauge bridges in high-temperature (150 °C) logging tools deployed at 5 km depth. IC Role / Device Role / Timing Role: Temperature-stable voltage reference for bridge excitation and ADC full-scale setting. Use Value: JANTX1N4624-1/TR's –0.050,+0.020 %/°C αVZ and 175 °C max TJ enable <10 ppm/°C drift over operational range. | Use Scenario: Setting gate bias for GaN HEMT drivers in portable HF/VHF transceivers operating under vibration and thermal shock. IC Role / Device Role / Timing Role: Robust shunt regulator maintaining stable bias despite supply ripple and ESD events. Use Value: Non-sensitive to ESD per MIL-STD-750 Method 1020 and hermetic DO-35 package ensure field reliability without additional TVS protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4624US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when automated assembly, board space constraints, or vibration resistance outweigh lead-forming flexibility |
| JAN1N4624-1 | Identical DO-35 package and electrical parameters but qualified only to JAN level (less stringent screening than JANTX) | Approved for less critical military subsystems; not cleared for flight-critical avionics or space payloads | Select when cost sensitivity outweighs need for full JANTX burn-in and radiation lot acceptance testing |
Compared with JANTX1N4624-1/TR, 1N4624US-1 trades axial-mount versatility for SMT manufacturability, while JAN1N4624-1 reduces qualification rigor and cost but sacrifices screening depth required for mission-critical platforms.
Availability
JANTX1N4624-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite bus voltage reference, and downhole oilfield sensor calibration requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4624-1/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N46xx-1 series was developed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, hermetically sealed Zener references in extreme thermal and radiation environments.
FAQ
What is the Zener voltage tolerance for JANTX1N4624-1/TR?
JANTX1N4624-1/TR has a nominal Zener voltage of 4.7 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed 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.
Is JANTX1N4624-1/TR RoHS compliant?
No, JANTX1N4624-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix e3) are available only for commercial-grade parts; JANTX-level devices retain tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS restrictions under applicable defense procurement rules.
What is the maximum Zener current rating for JANTX1N4624-1/TR?
The maximum Zener current (IZM) for JANTX1N4624-1/TR is 75.0 mA, derived from its 500 mW power rating and 4.7 V nominal Zener voltage (P = V × I → I = 0.5 W / 4.7 V ≈ 106 mA), but limited by thermal constraints and specified as 75.0 mA in the Electrical Characteristics table on page 3 of the datasheet.
Does JANTX1N4624-1/TR require heatsinking in typical applications?
JANTX1N4624-1/TR does not require external heatsinking at ≤250 mA and ambient temperatures ≤50 °C due to its 250 °C/W junction-to-lead thermal resistance and 3/8″ lead length mounting. However, sustained operation above 50 °C ambient or near 500 mW dissipation requires PCB copper pour or lead-forming to enhance conduction cooling per Figure 2 derating curve.
How is polarity marked on JANTX1N4624-1/TR?
JANTX1N4624-1/TR uses a single black cathode band on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the unmarked (anode) end during Zener regulation operation, as explicitly stated in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2 Rev. 1.
JANTX1N4624-1/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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.55 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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)
JANTX1N4624-1/TR FAQ
1.How can I place an order for JANTX1N4624-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4624-1/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 JANTX1N4624-1/TR reliable?
The price and inventory of JANTX1N4624-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4624-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4624-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4624-1/TR transactions.
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4.How is shipping managed for JANTX1N4624-1/TR?
JANTX1N4624-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4624-1/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 JANTX1N4624-1/TR?
For technical support, including JANTX1N4624-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4624-1/TR requirements.
6.How does Aetrix verify that JANTX1N4624-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4624-1/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 JANTX1N4624-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4624-1/TR?
All JANTX1N4624-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4624-1/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 JANTX1N4624-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4624-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4624-1/TR Tags
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