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Microchip Technology JAN1N4125D-1
- Part No.:
- JAN1N4125D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4125D-1.pdf
- Description:
- DIODE ZENER 47V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,883
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Product details
Overview
JAN1N4125D-1 from Microsemi is a 500 mW, 47 V, 1% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4125D-1 datasheet, JAN1N4125D-1 pinout, JAN1N4125D-1 application, or JAN1N4125D-1 equivalent, key selection criteria include its 47 V nominal Zener voltage at 250 mA test current, 250 Ω maximum dynamic impedance, 0.01 µA maximum reverse leakage at 35.8 V, ±0.095 %/°C temperature coefficient, and hermetically sealed axial-leaded construction.
Technical Context
This device operates as a precision shunt voltage regulator with a sharp breakdown knee at IZK = 250 mA, leveraging internal metallurgical bonding to ensure stable Zener voltage under thermal cycling and radiation exposure. Its low noise density (≤1 µV/√Hz below 6.8 V) and minimal capacitance support low-noise analog reference design.
The JAN1N4125D-1 is rated for junction temperatures from –65 °C to +175 °C, with thermal resistance RθJL = 250 °C/W at 10 mm lead length, enabling operation in high-temperature military environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47 V at IZT = 250 mA - defines precise regulation point for stable 47 V reference generation |
| Zener Impedance ZZT | 250 Ω max - ensures minimal output voltage variation under load current changes |
| Reverse Leakage IR | 0.01 µA max at VR = 35.8 V - guarantees negligible standby current in high-impedance bias networks |
| Power Dissipation | 500 mW at TL = 25 °C - supports continuous regulation in compact through-hole layouts with linear derating to zero at 175 °C |
| Temp. Coefficient αVZ | ±0.095 %/°C - enables predictable drift compensation in wide-temperature-range instrumentation |
| Package | DO-35 (DO-204AH) - axial-leaded, hermetically sealed glass package qualified for JANS-level reliability |
| Tolerance | 1% (denoted by "D" suffix) - provides tighter initial voltage accuracy than standard 5% variants for precision references |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt regulator configuration |
| Cathode | Zener regulation output | Provides stable 47 V reference when reverse-biased; marked by color band on glass body |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JANS-level screening ensures suitability for spaceflight and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Low noise density | ≤1 µV/√Hz at 47 V enables use in precision analog references without added filtering |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 |
Applications
| Avionics Power Reference | Missile Guidance Sensor Biasing |
|---|---|
Use Scenario: Providing stable 47 V reference for ADC front-end conditioning in airborne flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision analog reference rail independent of input supply variation. Use Value: 1% tolerance and ±0.095 %/°C TC enable <±0.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Biasing photodiode arrays and op-amp stages in inertial measurement unit (IMU) signal chains. IC Role / Device Role / Timing Role: Low-noise Zener source replacing battery-based references to eliminate maintenance and aging drift. Use Value: ≤1 µV/√Hz noise density preserves SNR in microvolt-level sensor outputs without additional LDO filtering. |
| Nuclear Reactor Control Interface | Satellite Payload Voltage Clamp |
Use Scenario: Regulating auxiliary supply rails in reactor protection system I/O modules exposed to gamma radiation fields. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining reference integrity during 100 krad(Si) TID exposure. Use Value: Inherent radiation tolerance eliminates need for shielding or redundant regulation circuitry per MicroNote 050. | Use Scenario: Clamping bus voltage transients on solar array regulators aboard LEO satellites. IC Role / Device Role / Timing Role: Transient suppression element absorbing ESD and latch-up energy while holding steady-state voltage. Use Value: Hermetic DO-35 package withstands atomic oxygen erosion and vacuum outgassing requirements per MIL-STD-883. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4125US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Used where PCB real estate or automated assembly requires SMT instead of through-hole | Select when board layout mandates surface mount and thermal path allows RθJA ≤ 400 °C/W |
| JANTXV1N4125D | Identical Zener parameters and 1% tolerance, but qualified only to JANTXV (not JANS) per MIL-PRF-19500/435 | Approved for high-reliability avionics but excluded from radiation-intensive or space-grade programs requiring JANS | Choose when full JANS screening is not mandated and cost reduction is prioritized |
Compared with JAN1N4125D-1, 1N4125US-1 offers identical regulation performance in SMT form but lacks JANS qualification, while JANTXV1N4125D meets most military specs at lower screening cost but excludes radiation hardness validation required for space missions.
Availability
JAN1N4125D-1 is available at Aetrix Electronics and suitable for avionics power reference, missile guidance sensor biasing, and nuclear reactor control interface applications requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4125D-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 JAN1N4125D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family engineered specifically for precision voltage regulation in mission-critical systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4125D-1?
The "D" suffix in JAN1N4125D-1 denotes a 1% Zener voltage tolerance, meaning its nominal 47 V rating is guaranteed between 46.53 V and 47.47 V at 250 mA test current and 25 °C ambient. This tighter tolerance supports precision reference designs where standard 5% variants would introduce unacceptable error margins.
Is JAN1N4125D-1 qualified for space applications?
Yes, JAN1N4125D-1 is qualified to JANS level per MIL-PRF-19500/435, including radiation hardness characterization documented in Microsemi MicroNote 050. It is approved for use in spaceflight hardware where total ionizing dose (TID) resilience up to 100 krad(Si) is required, provided full lot acceptance testing is performed.
What is the maximum reverse leakage current for JAN1N4125D-1?
JAN1N4125D-1 has a maximum reverse leakage current (IR) of 0.01 µA at VR = 35.8 V and 25 °C. This ultra-low leakage ensures minimal loading on high-impedance bias networks and preserves accuracy in low-power analog circuits where even nanoamp-level currents affect performance.
Can JAN1N4125D-1 be used in surface-mount designs?
No - JAN1N4125D-1 uses the axial-leaded DO-35 (DO-204AH) package and is not surface-mount compatible. For SMT implementation, Microsemi offers the functionally equivalent 1N4125US-1 in DO-213AA package, which shares identical electrical specifications but requires requalification for JANS-level reliability.
What is the temperature coefficient of JAN1N4125D-1?
JAN1N4125D-1 has a temperature coefficient (αVZ) of ±0.095 %/°C, indicating its Zener voltage changes by approximately ±0.045 V per 10 °C deviation from 25 °C. This value is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 and supports predictable drift modeling in thermal design.
JAN1N4125D-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):
- 47 V
- Tolerance:
- ±1%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 35.8 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)
JAN1N4125D-1 FAQ
1.How can I place an order for JAN1N4125D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4125D-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 JAN1N4125D-1 reliable?
The price and inventory of JAN1N4125D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4125D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4125D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4125D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4125D-1?
JAN1N4125D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4125D-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 JAN1N4125D-1?
For technical support, including JAN1N4125D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4125D-1 requirements.
6.How does Aetrix verify that JAN1N4125D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4125D-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 JAN1N4125D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4125D-1?
All JAN1N4125D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4125D-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 JAN1N4125D-1 part is unused and in its original packaging.
Return procedure for JAN1N4125D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4125D-1 Tags
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