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Microchip Technology JANS1N4125D-1/TR
- Part No.:
- JANS1N4125D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4125D-1/TR.pdf
- Description:
- DIODE ZENER 47V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,443
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Product details
Overview
JANS1N4125D-1/TR from Microsemi is a 47 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 250 Ω dynamic impedance and ±0.095 %/°C temperature coefficient.
For engineers reviewing the JANS1N4125D-1/TR datasheet, JANS1N4125D-1/TR pinout, JANS1N4125D-1/TR application, or JANS1N4125D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic DO-35 packaging, noise density (≤1 µV/√Hz), and JANS-level qualification for extended temperature operation (–65 °C to +175 °C).
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures low leakage (<0.01 µA at 37.6 V) and minimal capacitance (typ. <1 pF at 0 V), critical for low-noise analog references and radiation-tolerant power conditioning.
The JANS1N4125D-1/TR exhibits a positive temperature coefficient of +0.095 %/°C above 47 V, enabling predictable thermal drift compensation in stabilized reference circuits. Its 250 mA Zener test current and 40 mW maximum noise density support use in metrology-grade voltage standards and high-stability bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47.0 V ±1% at 250 mA - enables precise 47 V reference generation with tight initial accuracy |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact axial-leaded layouts with derating to zero at 175 °C |
| Dynamic Impedance ZZT | 250 Ω at 250 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage IR | ≤0.01 µA at 37.6 V - guarantees ultra-low standby current in battery-backed or low-power systems |
| Noise Density | ≤1 µV/√Hz - provides low-noise performance essential for precision instrumentation and ADC reference buffers |
| Temp. Coefficient αVZ | +0.095 %/°C - allows accurate thermal drift modeling in wide-temperature-range designs |
| Junction Temp. Range | –65 °C to +175 °C - validated for extreme-environment operation in space and military platforms |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte tin plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; must remain at lower potential than cathode during regulation |
| Cathode | Zener regulation output | Banded end; supplies regulated 47 V when reverse-biased; requires current-limiting resistor in series |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S (space) and Class H (high reliability) applications with full lot traceability and screening |
| Metallurgical bond construction | Eliminates interfacial voids and delamination risks, ensuring long-term stability under thermal cycling and vibration |
| Hermetic DO-35 glass package | Prevents moisture ingress and parameter shift over decades; supports >100 krad(Si) total ionizing dose tolerance |
| 1% Zener voltage tolerance | Reduces need for post-calibration trimming in precision reference designs, lowering BOM and test cost |
| Non-ESD-sensitive design | Withstands >4 kV HBM without degradation per MIL-STD-750 method 1020, simplifying handling and assembly |
Applications
| Spacecraft Power Regulation | Aerospace Avionics Reference |
|---|---|
Use Scenario: Regulating auxiliary 47 V bus in satellite power distribution units exposed to vacuum and thermal cycling. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for DC-DC converter feedback loops. Use Value: JANS qualification and radiation hardness ensure uninterrupted operation across 15+ year mission lifetimes without parameter drift. | Use Scenario: Generating precision 47 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Low-noise Zener element establishing absolute voltage scale for sensor signal conditioning. Use Value: ≤1 µV/√Hz noise density and 1% tolerance maintain 16-bit effective resolution under EMI-rich cockpit environments. |
| Nuclear Instrumentation | Defense Radar Bias Supply |
Use Scenario: Stabilizing high-voltage detector bias in radiation monitoring equipment operating in gamma fields. IC Role / Device Role / Timing Role: Primary voltage clamp protecting front-end amplifiers from transient overvoltage events. Use Value: Hermetic DO-35 package and –65 °C to +175 °C rating enable reliable operation inside shielded enclosures near reactor cores. | Use Scenario: Providing regulated gate bias for GaN RF power amplifiers in active electronically scanned array (AESA) radar transceivers. IC Role / Device Role / Timing Role: High-stability shunt regulator maintaining constant drain-source voltage under pulsed RF loads. Use Value: 250 Ω dynamic impedance and 500 mW dissipation prevent voltage sag during 10 µs RF burst intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4125D-1 | Same electrical specs but qualified only to JANTXV level; lacks full JANS screening (e.g., burn-in, life test) | Suitable for high-reliability ground-based systems where full space qualification is not mandated | Select when cost sensitivity outweighs requirement for Class S radiation assurance and extended lifetime validation |
| 1N4125DUR-1 | Surface-mount DO-213AA package; identical 47 V/1%/500 mW specs but no MIL-PRF-19500 qualification | Used in commercial or industrial PCBs requiring automated placement and smaller footprint | Select when board space constraints prohibit axial-leaded components and radiation tolerance is not required |
Compared with JANS1N4125D-1/TR, JANTXV1N4125D-1 offers reduced qualification rigor for cost-sensitive defense programs, while 1N4125DUR-1 trades hermeticity and screening for SMT manufacturability-neither is pin-compatible due to differing packages and reliability grades.
Availability
JANS1N4125D-1/TR is available at Aetrix Electronics and suitable for spacecraft power regulation, aerospace avionics reference, and nuclear instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for JANS1N4125D-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 analog and mixed-signal ICs, discrete devices, and RF solutions for aerospace, defense, and industrial markets.
The JANS1N4125D-1/TR belongs to Microsemi's legacy MIL-PRF-19500-qualified Zener diode family, engineered specifically for voltage reference stability, radiation tolerance, and extended-temperature operation in mission-critical systems.
FAQ
What is the Zener voltage tolerance of JANS1N4125D-1/TR?
JANS1N4125D-1/TR has a nominal Zener voltage of 47.0 V with a ±1% tolerance, as indicated by the "D" suffix in its part number per Microsemi's nomenclature. This tight tolerance is verified at 250 mA test current and 25 °C ambient, supporting high-accuracy reference designs without post-manufacturing calibration.
Is JANS1N4125D-1/TR radiation-hardened?
Yes, JANS1N4125D-1/TR is inherently radiation hard per Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435. Its metallurgically bonded structure and hermetic DO-35 package provide proven resistance to total ionizing dose (TID) and displacement damage, making it suitable for spaceflight and nuclear environments.
What does the "TR" suffix mean in JANS1N4125D-1/TR?
The "TR" suffix in JANS1N4125D-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated surface-mount assembly. The device itself remains an axial-leaded DO-35 component; the TR format refers only to carrier packaging-not a change in form factor or electrical behavior of the JANS1N4125D-1/TR die or package.
What is the maximum reverse leakage current for JANS1N4125D-1/TR?
JANS1N4125D-1/TR has a maximum reverse leakage current (IR) of 0.01 µA at 37.6 V, per the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This ultra-low leakage supports energy-efficient bias networks and minimizes error in high-impedance reference circuits using the JANS1N4125D-1/TR.
Can JANS1N4125D-1/TR be used in place of commercial-grade 1N4125D-1?
No-JANS1N4125D-1/TR is not a drop-in replacement for commercial 1N4125D-1. While both share identical nominal Zener voltage and tolerance, the JANS1N4125D-1/TR undergoes full MIL-PRF-19500/435 screening (including burn-in, life test, and radiation assurance), uses different plating and lot traceability, and is rated for –65 °C to +175 °C operation-requirements absent in commercial versions.
JANS1N4125D-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):
- 47 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- 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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4125D-1/TR FAQ
1.How can I place an order for JANS1N4125D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4125D-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 JANS1N4125D-1/TR reliable?
The price and inventory of JANS1N4125D-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 JANS1N4125D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4125D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4125D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4125D-1/TR?
JANS1N4125D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4125D-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 JANS1N4125D-1/TR?
For technical support, including JANS1N4125D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4125D-1/TR requirements.
6.How does Aetrix verify that JANS1N4125D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4125D-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 JANS1N4125D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4125D-1/TR?
All JANS1N4125D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4125D-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 JANS1N4125D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4125D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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