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Microchip Technology JANTX1N4625D-1
- Part No.:
- JANTX1N4625D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4625D-1.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,881
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Product details
Overview
JANTX1N4625D-1 from Microsemi is a 500 mW, 5.1 V Zener diode in DO-35 glass package with 1% voltage tolerance, metallurgically bonded construction, and MIL-PRF-19500/435 JANTX qualification for high-reliability regulation in aerospace power supplies.
For engineers reviewing the JANTX1N4625D-1 datasheet, JANTX1N4625D-1 pinout, JANTX1N4625D-1 application, or JANTX1N4625D-1 equivalent, key selection criteria include Zener voltage accuracy (±1%), low dynamic impedance (1500 Ω @ 250 mA), temperature coefficient (–0.045/+0.030 %/°C), and hermetic DO-35 packaging for stable operation across –65 °C to +175 °C.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, delivering regulated output at 5.1 V with 250 mA test current and 1500 Ω dynamic impedance. Its metallurgical bond ensures low noise density (2 µV/√Hz) and minimal capacitance, critical for analog sensing and low-noise power conditioning.
Qualified to MIL-PRF-19500/435 JANTX level, it supports operation from –65 °C to +175 °C with thermal resistance of 250 °C/W (junction-to-lead) and linear power derating from 500 mW at 25 °C to zero at 175 °C - enabling use in extended-temperature military avionics and satellite subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 5.1 V ±1% at 250 mA - enables precise 5 V rail regulation with tight tolerance for ADC references and sensor biasing. |
| Power Dissipation | 500 mW max at 25 °C - supports continuous regulation in compact axial-leaded layouts without forced cooling. |
| Dynamic Impedance ZZT | 1500 Ω @ 250 mA - maintains stable output under load transients typical in DC-DC feedback networks. |
| Temperature Coefficient αVZ | –0.045/+0.030 %/°C - ensures minimal drift over wide operating ranges in unheated enclosures. |
| Noise Density ND | 2 µV/√Hz @ 250 mA - suitable for low-noise analog circuits including precision instrumentation amplifiers. |
| Reverse Leakage IR | 5.0 µA @ 3.0 V - guarantees low standby current in battery-backed monitoring circuits. |
| Junction Temp Range | –65 °C to +175 °C - validated for deployment in engine-mounted control units and space-grade electronics. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package; cathode indicated by band; tin-lead plating; 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 ground or low-impedance return path to establish stable Zener reference node. |
| Cathode | Zener regulation output / voltage reference node | Banded end; connected to regulated 5.1 V supply rail; requires series current-limiting resistor per application current demand. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical aerospace and defense systems requiring traceable lot data and screening. |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision voltage references and analog front-end biasing networks. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term stability in harsh environments. |
| Low noise density (2 µV/√Hz) | Enables use in high-resolution data acquisition paths where reference noise directly impacts ENOB. |
| Hermetic DO-35 glass package | Prevents moisture ingress and parametric shift over decades-critical for satellite payload longevity. |
Applications
| Aerospace Power Regulation | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating 5 V reference rails in flight computer power distribution modules exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Zener voltage reference providing stable bias for ADCs, DACs, and op-amps in avionics subsystems. Use Value: JANTX1N4625D-1's JANTX qualification and –65 °C to +175 °C operation ensure uninterrupted regulation during orbital thermal cycling. | Use Scenario: Supplying calibrated bias voltage to infrared focal plane array (FPA) detectors on Earth observation satellites. IC Role / Device Role / Timing Role: Precision voltage reference establishing fixed operating point for photodiode current-to-voltage conversion. Use Value: 1% tolerance and low 2 µV/√Hz noise preserve signal integrity in sub-16-bit radiometric measurements. |
| Military Vehicle Control Units | Nuclear Instrumentation |
Use Scenario: Stabilizing reference voltage for engine ECU analog sensors in tracked armored vehicles subject to shock, vibration, and wide ambient swings. IC Role / Device Role / Timing Role: Primary Zener regulator in isolated 5 V auxiliary supply feeding pressure, temperature, and position transducers. Use Value: Hermetic DO-35 package and metallurgical bond prevent parameter drift under mechanical stress and humidity exposure. | Use Scenario: Providing stable reference for pulse-height analyzers in radiation detection systems deployed in reactor containment zones. IC Role / Device Role / Timing Role: Low-drift voltage reference defining energy thresholds in scintillation detector signal chains. Use Value: Radiation hardness and <0.05 %/°C net temperature coefficient maintain calibration accuracy across multi-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4625US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair. | Select when automated placement and board space reduction outweigh manual assembly flexibility. |
| JAN1N4625D-1 | Identical electrical and mechanical specs; differs only in qualification level (JAN vs JANTX). | JAN lacks full JANTX screening (e.g., burn-in, life test); not approved for Class H or Class K programs. | Choose JANTX1N4625D-1 for programs requiring MIL-PRF-19500/435 compliance documentation and extended reliability testing. |
Compared with 1N4625US-1 and JAN1N4625D-1, JANTX1N4625D-1 uniquely delivers verified JANTX-level screening, axial-leaded DO-35 compatibility for legacy hardware, and documented 1% tolerance - making it the only choice for retrofitting certified avionics with unchanged form, fit, and function.
Availability
JANTX1N4625D-1 is available at Aetrix Electronics and suitable for aerospace power regulation, satellite sensor biasing, and military vehicle control units requiring stable component supply with full MIL-PRF-19500/435 traceability.
Supply support for JANTX1N4625D-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N46xx-1 series was developed specifically for military-grade Zener regulation, emphasizing hermetic packaging, radiation tolerance, and extended-temperature performance in safety-critical systems.
FAQ
What is the Zener voltage and tolerance of JANTX1N4625D-1?
JANTX1N4625D-1 has a nominal Zener voltage of 5.1 V with ±1% tolerance at 250 mA test current, confirmed per Microsemi T4-LDS-0245-2 Rev. 1. This tight tolerance enables direct use in precision reference applications without external trimming, and the D suffix explicitly denotes the 1% grade in the MIL nomenclature system.
Is JANTX1N4625D-1 qualified to MIL-PRF-19500/435?
Yes, JANTX1N4625D-1 is fully qualified to MIL-PRF-19500/435 at the JANTX reliability level, including screening tests such as burn-in, temperature cycling, and life testing. The "JANTX" prefix in the part number is defined in the nomenclature table on page 2 of the Microsemi datasheet as meeting this specification.
What package type does JANTX1N4625D-1 use?
JANTX1N4625D-1 uses the DO-35 (DO-204AH) hermetically sealed axial-leaded glass package, with cathode identified by a band. Dimensions and mechanical specifications are provided on page 5 of the Microsemi datasheet, confirming lead length between 1.000–1.500 inches and body diameter 0.056–0.090 inches.
What is the maximum power dissipation and derating behavior of JANTX1N4625D-1?
JANTX1N4625D-1 has a rated average power dissipation of 500 mW at 25 °C, linearly derated to zero at 175 °C per Figure 2 in the datasheet. Derating begins at 50 °C for lead temperature or 25 °C for ambient conditions on a standard FR4 board - a critical design constraint for thermal management in enclosed avionics enclosures.
Does JANTX1N4625D-1 have radiation hardness characteristics?
Yes, JANTX1N4625D-1 is inherently radiation hard as documented in Microsemi MicroNote 050, due to its metallurgically bonded structure and hermetic glass package. This property is explicitly cited in the Applications/Benefits section of the datasheet and supports use in low-earth orbit and nuclear instrumentation environments.
JANTX1N4625D-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):
- 5.1 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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)
JANTX1N4625D-1 FAQ
1.How can I place an order for JANTX1N4625D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4625D-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 JANTX1N4625D-1 reliable?
The price and inventory of JANTX1N4625D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4625D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4625D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4625D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4625D-1?
JANTX1N4625D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4625D-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 JANTX1N4625D-1?
For technical support, including JANTX1N4625D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4625D-1 requirements.
6.How does Aetrix verify that JANTX1N4625D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4625D-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 JANTX1N4625D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4625D-1?
All JANTX1N4625D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4625D-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 JANTX1N4625D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4625D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4625D-1 Tags
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