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Microchip Technology JANTX1N4625-1
- Part No.:
- JANTX1N4625-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4625-1.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,400
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Product details
Overview
JANTX1N4625-1 from Microsemi is a 500 mW, 5.1 V ±5% metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4625-1 datasheet, JANTX1N4625-1 pinout, JANTX1N4625-1 application, or JANTX1N4625-1 equivalent, key selection criteria include Zener voltage tolerance, noise density (2 µV/√Hz), dynamic impedance (1500 Ω), temperature coefficient (–0.045/+0.030 %/°C), and MIL-qualified thermal derating behavior.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 5.1 V at 250 mA test current, exhibiting low noise density (2 µV/√Hz) and moderate dynamic impedance (1500 Ω) due to its metallurgical bond construction. It maintains regulation across wide current (1–70 mA) and temperature (–65 to +175 °C) ranges.
The JANTX1N4625-1 is designed for stable reference generation in analog circuits where low-noise, radiation-hardened, and hermetically sealed performance is required - not for switching or high-current clamping. Its cathode band polarity and axial-leaded DO-35 mechanical form factor support through-hole mounting in high-integrity PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 5.1 V ±5% at 250 mA - defines precise regulation point for reference circuits |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - sets maximum continuous thermal load |
| Dynamic Impedance ZZT | 1500 Ω at 250 mA - determines output voltage stability under load variation |
| Noise Density ND | 2 µV/√Hz - enables low-noise analog references in sensitive instrumentation |
| Temp Coefficient αVZ | –0.045/+0.030 %/°C - quantifies voltage drift over operating temperature range |
| Max Reverse Current IR | 3.0 µA at 3.0 V - ensures minimal leakage in standby or low-power bias networks |
| Junction Temp Range | –65 to +175 °C - supports operation in extreme environmental conditions |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by single black band on body; leads are tin-lead plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation terminal | Banded end; must be held positive relative to anode to enter breakdown and regulate voltage |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense systems requiring screened, lot-controlled components |
| Metallurgical bond construction | Enables stable Zener characteristics and low long-term parameter drift under thermal cycling |
| Low noise density (2 µV/√Hz) | Supports precision analog references in data acquisition, sensor excitation, and metrology circuits |
| Hermetic glass DO-35 package | Provides moisture resistance and long-term stability in harsh environments without conformal coating |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-qualified designs |
Applications
| Avionics Power Reference | Defense System Bias Network |
|---|---|
Use Scenario: Providing stable 5.1 V reference for ADC drivers and op-amp biasing in airborne flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision DC reference rail independent of input supply variation. Use Value: Maintains <±0.5% output stability over –55 to +125 °C ambient and withstands vibration/shock per MIL-STD-810. | Use Scenario: Regulating auxiliary supply rails in radar receiver front-end modules exposed to EMI and temperature extremes. IC Role / Device Role / Timing Role: Low-noise Zener reference stabilizing LNA bias points and local oscillator tuning voltages. Use Value: Delivers 2 µV/√Hz noise floor and survives 100 krad(Si) total ionizing dose without parameter shift. |
| Satellite Sensor Interface | Industrial Control Loop Reference |
Use Scenario: Supplying calibrated excitation voltage to radiation-hardened RTD and thermocouple signal conditioners aboard LEO satellites. IC Role / Device Role / Timing Role: Precision shunt regulator generating stable 5.1 V reference for ratiometric measurement circuits. Use Value: Ensures <0.1% full-scale error contribution over mission lifetime due to inherent radiation hardness and low TC. | Use Scenario: Establishing fixed reference for 4–20 mA transmitter calibration in oil & gas process controllers operating at –40 to +85 °C. IC Role / Device Role / Timing Role: High-reliability Zener element maintaining accuracy in safety-critical loop-powered transmitters. Use Value: Qualified to JANTX level with 100% lot traceability and burn-in screening per MIL-PRF-19500/435. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4625US (Microchip) | Same 5.1 V ±5%, DO-35 package, but only commercial-grade (no MIL qualification); RoHS-compliant matte-tin plating | Lacks JANTX screening, burn-in, and radiation hardness - unsuitable for aerospace/defense deployments | Select only for cost-sensitive industrial prototypes where MIL-qualified reliability is not required |
| CMPT4625 (Central Semiconductor) | 5.1 V ±5%, SOT-23 surface-mount package; 350 mW rating; no MIL qualification; max IZM = 65 mA | Not pin-compatible; lower power and thermal capability; intended for compact consumer electronics, not high-reliability systems | Choose when board space is constrained and MIL compliance is unnecessary; requires layout change |
Compared with JANTX1N4625-1, the 1N4625US offers identical electrical specs but lacks military screening and radiation tolerance, while CMPT4625 trades reliability and power for miniaturization - neither serves as a drop-in replacement in JANTX-designated systems.
Availability
JANTX1N4625-1 is available at Aetrix Electronics and suitable for avionics power reference, defense system bias network, and satellite sensor interface applications requiring stable component supply with full MIL-PRF-19500/435 traceability.
Supply support for JANTX1N4625-1 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 aerospace-qualified analog and mixed-signal components.
The JANTX1N4625-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in mission-critical defense, space, and avionics systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4625-1?
JANTX1N4625-1 has a nominal Zener voltage of 5.1 V with a ±5% tolerance, meaning the actual measured VZ falls between 4.845 V and 5.355 V at 250 mA test current and 25 °C. This tolerance is standard for the JAN/JANTX series unless otherwise marked with C (±2%) or D (±1%) suffixes - JANTX1N4625-1 carries no such suffix and therefore defaults to ±5%.
Is JANTX1N4625-1 RoHS compliant?
JANTX1N4625-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants; JANTX-level parts retain traditional tin-lead plating to meet MIL-STD-750 solderability requirements and ensure compatibility with legacy aerospace assembly processes.
What is the maximum Zener current IZM for JANTX1N4625-1?
The maximum Zener current IZM for JANTX1N4625-1 is 70.0 mA. This value is derived from the 500 mW power rating and the 5.1 V nominal Zener voltage (P = V × I → I = 0.5 W / 5.1 V ≈ 98 mA), but the datasheet specifies 70.0 mA as the absolute maximum dc current to maintain reliability and thermal margin under worst-case junction temperature conditions.
Does JANTX1N4625-1 require heatsinking in typical applications?
JANTX1N4625-1 does not require external heatsinking in typical applications because its thermal resistance junction-to-lead (RθJL) is 250 °C/W and it operates within safe limits up to 70 mA at 25 °C ambient. However, above 50 °C ambient or at sustained >50 mA loads, PCB copper area (≥4 mm² pad) and 25 mm lead length are recommended to avoid exceeding the 175 °C maximum junction temperature.
How is polarity identified on JANTX1N4625-1?
Polarity on JANTX1N4625-1 is identified by a single black cathode band on the glass body; the banded end is the cathode and must be held positive relative to the unmarked (anode) end for proper Zener regulation. This marking complies with JEDEC standards and is verified per MIL-STD-750 method 2026 for visual inspection and solderability.
JANTX1N4625-1 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:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4625-1 FAQ
1.How can I place an order for JANTX1N4625-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4625-1 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 JANTX1N4625-1 reliable?
The price and inventory of JANTX1N4625-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4625-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4625-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4625-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4625-1?
JANTX1N4625-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4625-1 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 JANTX1N4625-1?
For technical support, including JANTX1N4625-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4625-1 requirements.
6.How does Aetrix verify that JANTX1N4625-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4625-1 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 JANTX1N4625-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4625-1?
All JANTX1N4625-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4625-1, 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 JANTX1N4625-1 part is unused and in its original packaging.
Return procedure for JANTX1N4625-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4625-1 Tags
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