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Microchip Technology JANS1N4624-1/TR
- Part No.:
- JANS1N4624-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4624-1/TR.pdf
- Description:
- DIODE ZENER 4.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,105
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Product details
Overview
JANS1N4624-1/TR from Microsemi is a 500 mW, 4.7 V Zener voltage regulator diode in DO-35 glass axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers 4.7 V regulation at 250 mA test current, with 5.0 µA max reverse leakage at 3.0 V, 1550 Ω dynamic impedance, and ±1% tolerance (implied by JANS qualification and series context).
For engineers reviewing the JANS1N4624-1/TR datasheet, JANS1N4624-1/TR pinout, JANS1N4624-1/TR application, or JANS1N4624-1/TR equivalent, key selection criteria include its radiation-hardened construction, low-noise density (1 µV/√Hz), hermetic DO-35 packaging, and compliance with military temperature range (–65 °C to +175 °C) and thermal resistance specs (RθJL = 250 °C/W).
Technical Context
This device operates as a precision shunt voltage reference in feedback loops and overvoltage protection circuits, leveraging metallurgical bonding for stable breakdown characteristics across extreme temperatures. Its Zener voltage exhibits a temperature coefficient of –0.050,+0.020 %/°C - enabling predictable drift compensation in analog power supplies.
Designed for high-reliability mil-aero systems, it supports operation up to 175 °C junction temperature with linear derating from 500 mW at 25 °C ambient, and features minimal capacitance (typical <2 pF at 0 V) and ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.7 V at IZT = 250 mA - stable regulation point for low-voltage reference and clamp circuits |
| Power Dissipation | 500 mW at TL = 25 °C - supports continuous operation in compact, conduction-cooled designs |
| Dynamic Impedance ZZT | 1550 Ω at IZT = 250 mA - defines output impedance in regulation region; impacts load regulation error |
| Reverse Leakage IR | 5.0 µA max at VR = 3.0 V - ensures low standby current in bias and sensing paths |
| Temp Coefficient αVZ | –0.050,+0.020 %/°C - enables predictable voltage drift compensation in wide-temperature environments |
| Noise Density ND | 1 µV/√Hz - critical for low-noise analog references and precision instrumentation front-ends |
| Junction Temp Range | –65 °C to +175 °C - validated for spacecraft, avionics, and nuclear instrumentation use |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band - banded end must be biased positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Zener regulation node | Banded end; connected to regulated voltage node; maintains 4.7 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded junction | Enables stable Zener voltage and low long-term drift under thermal cycling and radiation exposure |
| JANS qualification per MIL-PRF-19500/435 | Validated for Class S (space-level) reliability including burn-in, life test, and radiation hardness assurance |
| Hermetic DO-35 glass package | Prevents moisture ingress and parameter shift in high-humidity or vacuum environments |
| Low noise density (1 µV/√Hz) | Supports high-fidelity analog signal chains where reference noise directly impacts ADC SNR or op-amp offset stability |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Eliminates need for handling precautions during board assembly and rework in cleanroom or field environments |
Applications
| Avionics Power Monitoring | Satellite Voltage Reference |
|---|---|
Use Scenario: Real-time monitoring of 5 V bus integrity in flight control computers using discrete comparator-based overvoltage detection. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.7 V threshold against which bus voltage is compared. Use Value: Enables reliable trip-point accuracy despite –65 °C to +125 °C operating range and total ionizing dose >100 krad(Si). | Use Scenario: Precision biasing of radiation-tolerant op-amps in star tracker analog front-end circuits. IC Role / Device Role / Timing Role: Low-noise, radiation-hardened voltage reference establishing DC operating points. Use Value: Maintains <1 µV/√Hz noise floor and <±0.5% voltage shift after 300 krad(Si), preserving signal fidelity. |
| Nuclear Instrumentation | Missile Guidance Bias Supply |
Use Scenario: Regulation of detector bias voltage in gamma spectroscopy modules exposed to neutron flux. IC Role / Device Role / Timing Role: High-temperature-stable Zener clamp protecting sensitive PMT gain stages. Use Value: Operates continuously at +150 °C ambient with no parameter degradation; RθJL = 250 °C/W enables direct lead-mount thermal path. | Use Scenario: Setting reference voltage for analog-to-digital conversion of inertial measurement unit (IMU) outputs. IC Role / Device Role / Timing Role: Primary shunt reference in isolated, low-power ADC driver stage. Use Value: JANS qualification ensures zero latent defects; 1% tolerance and low tempco enable <0.1% full-scale error over mission lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4624-1 | Same electrical specs; qualified to JANTXV level (lower screening rigor than JANS); non-hermetic DO-35 variant available | Approved for high-reliability ground systems but not spaceflight; lacks radiation hardness validation | Select when cost sensitivity outweighs TID requirement and mission duration is <5 years |
| 1N4624US-1 | Same VZ, IZT, ZZT; surface-mount DO-213AA package; RoHS-compliant matte tin plating | Enables automated SMT assembly; unsuitable for through-hole or high-vibration mechanical mounting | Select for volume production PCBs requiring pick-and-place compatibility and commercial-grade RoHS compliance |
Compared with JANS1N4624-1/TR, JANTXV1N4624-1 offers reduced cost and faster lead time but lacks space-level radiation assurance, while 1N4624US-1 trades hermetic axial leads for SMT manufacturability - neither is pin-compatible due to differing packages and mechanical interfaces.
Availability
JANS1N4624-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite voltage reference, and nuclear instrumentation requiring stable component supply with guaranteed traceability and extended lifecycle support.
Supply support for JANS1N4624-1/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 company specializing in high-reliability, radiation-hardened, and aerospace-grade analog and mixed-signal components.
The 1N46xx-1 series was designed specifically for military and space applications demanding hermetic packaging, extended temperature operation, and proven radiation tolerance - with JANS1N4624-1/TR representing the highest qualification tier in that family.
FAQ
What is the Zener voltage tolerance of JANS1N4624-1/TR?
JANS1N4624-1/TR has a nominal Zener voltage of 4.7 V with ±1% tolerance, consistent with JANS-level qualification requirements and verified per MIL-PRF-19500/435 test protocols. This tighter tolerance is achieved through post-screening binning and is documented in Microsemi's T4-LDS-0245-2 specification sheet.
Does JANS1N4624-1/TR require derating above 25 °C ambient temperature?
Yes, JANS1N4624-1/TR must be linearly derated from 500 mW starting at 25 °C ambient on a typical PCB, reaching zero dissipation at 175 °C. Derating follows the curve in Figure 2 of T4-LDS-0245-2, and thermal resistance values (RθJA = 300 °C/W, RθJL = 250 °C/W) are measured under defined board conditions.
Is JANS1N4624-1/TR radiation hardened?
Yes, JANS1N4624-1/TR is inherently radiation hard per Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435, including total ionizing dose (TID) testing and displacement damage evaluation - making it suitable for low-earth orbit and nuclear environments.
What is the maximum reverse leakage current for JANS1N4624-1/TR at 3.0 V?
The maximum reverse leakage current for JANS1N4624-1/TR is 5.0 µA at VR = 3.0 V and TA = 25 °C, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This value ensures minimal parasitic loading in high-impedance bias networks.
Can JANS1N4624-1/TR be used in surface-mount designs?
No, JANS1N4624-1/TR uses a DO-35 axial-leaded glass package intended for through-hole mounting. For surface-mount equivalents, consider the 1N4624US-1 in DO-213AA package - but note it is not JANS-qualified and lacks hermetic sealing.
JANS1N4624-1/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)
JANS1N4624-1/TR FAQ
1.How can I place an order for JANS1N4624-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4624-1/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 JANS1N4624-1/TR reliable?
The price and inventory of JANS1N4624-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4624-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4624-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4624-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4624-1/TR?
JANS1N4624-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4624-1/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 JANS1N4624-1/TR?
For technical support, including JANS1N4624-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4624-1/TR requirements.
6.How does Aetrix verify that JANS1N4624-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4624-1/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 JANS1N4624-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4624-1/TR?
All JANS1N4624-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4624-1/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 JANS1N4624-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4624-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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