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Microchip Technology JAN1N4125C-1
- Part No.:
- JAN1N4125C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4125C-1.pdf
- Description:
- DIODE ZENER 47V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,047
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Product details
Overview
JAN1N4125C-1 from Microsemi is a 47 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435, with ±2% Zener voltage tolerance, 250 mA test current, and 250 Ω maximum dynamic impedance at 25 °C - used for precision voltage regulation in radiation-hardened military power supplies.
For engineers reviewing the JAN1N4125C-1 datasheet, JAN1N4125C-1 pinout, JAN1N4125C-1 application, or JAN1N4125C-1 equivalent, key selection factors include Zener voltage tolerance (±2%), noise density (1 µV/√Hz), temperature coefficient (+0.095 %/°C), junction temperature range (–65 to +175 °C), and MIL-qualified reliability level.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 47 V at 250 mA test current (IZT), exhibiting 250 Ω dynamic impedance (ZZT) and 1 µV/√Hz noise density. Its metallurgical bond construction ensures stable regulation across wide current (up to 35.8 mA IZM) and temperature (–65 to +175 °C) ranges.
Designed for high-reliability environments, JAN1N4125C-1 meets JANS-level qualification per MIL-PRF-19500/435, features hermetic glass DO-35 packaging, and delivers inherent radiation hardness per Microsemi MicroNote 050 - with no ESD sensitivity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±2% at 250 mA - defines precise regulation point for feedback loops in hardened DC-DC converters. |
| Power Dissipation | 500 mW at 25 °C, derated linearly to zero at 175 °C - sets thermal design margin for through-hole PCB layouts. |
| Dynamic Impedance | 250 Ω max at IZT - determines output voltage stability under load transients in regulated bias networks. |
| Noise Density | 1 µV/√Hz - enables low-noise reference performance in analog signal conditioning circuits. |
| Temp Coefficient | +0.095 %/°C - quantifies voltage drift over temperature in mission-critical avionics power monitoring. |
| Max Reverse Current | 10 nA at 37.6 V - ensures minimal leakage in high-impedance sensing nodes. |
| Junction Temp Range | –65 to +175 °C - supports operation in extreme environmental conditions without derating penalties. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Tin-lead or RoHS-compliant matte-tin plating, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return path in shunt regulator topologies. |
| Cathode | Zener regulation output | Provides stabilized 47 V reference when reverse-biased; marked with color band. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures long-term parameter stability and resistance to thermal cycling fatigue in aerospace deployments. |
| JANS-level MIL qualification | Validates performance under shock, vibration, and extended temperature extremes per MIL-PRF-19500/435. |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) effects as documented in Microsemi MicroNote 050. |
| Low noise density | 1 µV/√Hz enables use in precision analog references where spectral purity affects ADC accuracy. |
| Hermetic glass sealing | Prevents moisture ingress and parametric shift in humid or corrosive operational environments. |
Applications
| Aerospace Power Monitoring | Military DC-DC Converter Reference |
|---|---|
Use Scenario: Real-time bus voltage supervision in satellite power distribution units. IC Role / Device Role / Timing Role: Shunt Zener reference providing fault-trigger threshold for overvoltage protection circuitry. Use Value: ±2% tolerance and +0.095 %/°C TC ensure trip-point accuracy remains within 0.5 V over –55 to +125 °C operating range. | Use Scenario: Feedback voltage reference in isolated 28 V to ±15 V military-grade DC-DC modules. IC Role / Device Role / Timing Role: Precision 47 V Zener regulating optocoupler LED drive current to stabilize output voltage. Use Value: 250 Ω dynamic impedance minimizes regulation error during 10–90% load steps in 50 kHz switching converters. |
| Nuclear Instrumentation Bias Supply | Avionics Sensor Excitation |
Use Scenario: High-stability bias for radiation detector preamplifiers in nuclear monitoring systems. IC Role / Device Role / Timing Role: Low-noise 47 V reference source powering charge-sensitive amplifier front-ends. Use Value: 1 µV/√Hz noise density prevents degradation of energy resolution in pulse-height analysis. | Use Scenario: Excitation voltage source for strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Stable shunt reference maintaining bridge excitation accuracy despite engine bay thermal swings. Use Value: –65 to +175 °C junction rating allows direct mounting on sensor housings without external heatsinking. |
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 47 V Zener, DO-213AA surface-mount package; identical electrical specs but different thermal resistance (RθJL = 200 °C/W vs. 250 °C/W). | Used where board space constraints prohibit axial-leaded components; requires reflow-compatible layout. | Select when automated assembly and reduced profile are required; verify thermal relief pad design for 500 mW dissipation. |
| JANTXV1N4125C | Same 47 V ±2%, same DO-35 package, but JANTXV qualification (not JANS); lower screening rigor and radiation assurance level. | Suitable for non-spaceflight military platforms where full JANS testing is not mandated. | Choose for cost-sensitive defense electronics where full JANS radiation hardness is unnecessary. |
Compared with JAN1N4125C-1, 1N4125US-1 offers identical regulation performance in a compact SMT form factor but demands revised thermal layout, while JANTXV1N4125C reduces qualification cost and lead time at the expense of radiation tolerance and extended environmental screening.
Availability
JAN1N4125C-1 is available at Aetrix Electronics and suitable for aerospace power monitoring, military DC-DC converter reference, and nuclear instrumentation bias supply requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4125C-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 semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened analog and discrete components.
JAN1N4125C-1 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parameter stability, hermeticity, and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance for JAN1N4125C-1?
JAN1N4125C-1 has a nominal Zener voltage of 47 V with a ±2% tolerance, as indicated by the "C" suffix in the part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, ensuring tight regulation for precision feedback applications in hardened power systems.
Is JAN1N4125C-1 suitable for radiation-intensive environments?
Yes, JAN1N4125C-1 is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435. Its metallurgically bonded glass construction and hermetic DO-35 package provide proven resilience against total ionizing dose (TID), making it appropriate for satellite, nuclear, and high-altitude avionics applications.
What is the maximum Zener current (IZM) for JAN1N4125C-1?
The maximum Zener current (IZM) for JAN1N4125C-1 is 35.8 mA at 25 °C, calculated from its 500 mW power rating and 47 V Zener voltage. This value decreases linearly with rising junction temperature, reaching zero at +175 °C, as defined in the power derating curve of the official datasheet.
Does JAN1N4125C-1 have RoHS compliance?
No - JAN1N4125C-1 is a JANS-qualified military part and uses tin-lead plating per MIL-STD-750; RoHS compliance (e3 suffix) is only available on commercial-grade versions (e.g., 1N4125C-1e3), not on JAN- or JANS-level variants due to reliability and solderability requirements for high-reliability assembly.
What is the noise density specification for JAN1N4125C-1?
JAN1N4125C-1 has a maximum noise density of 1 µV/√Hz, measured at 1 kHz to 3 kHz bandwidth with 250 mA Zener test current and 25 °C ambient. This ultra-low noise performance supports use in precision analog references where spectral purity directly impacts measurement fidelity.
JAN1N4125C-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:
- ±2%
- 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)
JAN1N4125C-1 FAQ
1.How can I place an order for JAN1N4125C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4125C-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 JAN1N4125C-1 reliable?
The price and inventory of JAN1N4125C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4125C-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4125C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4125C-1 transactions.
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4.How is shipping managed for JAN1N4125C-1?
JAN1N4125C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4125C-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 JAN1N4125C-1?
For technical support, including JAN1N4125C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4125C-1 requirements.
6.How does Aetrix verify that JAN1N4125C-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4125C-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 JAN1N4125C-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4125C-1?
All JAN1N4125C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4125C-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 JAN1N4125C-1 part is unused and in its original packaging.
Return procedure for JAN1N4125C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4125C-1 Tags
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