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Microchip Technology JAN1N4125D-1/TR
- Part No.:
- JAN1N4125D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4125D-1/TR.pdf
- Description:
- DIODE ZENER 47V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,405
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Product details
Overview
JAN1N4125D-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 voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4125D-1/TR datasheet, JAN1N4125D-1/TR pinout, JAN1N4125D-1/TR application, or JAN1N4125D-1/TR equivalent, this page provides verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details critical for precision reference and radiation-hardened designs.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 47 V at 250 mA test current, exhibiting a temperature coefficient of +0.095 %/°C and dynamic impedance of 250 Ω at IZT. Its metallurgical bond construction ensures stable regulation across -65 °C to +175 °C junction temperature range.
Designed for high-reliability applications, it delivers low noise density (1 µV/√Hz typical), minimal capacitance (<1 pF at 47 V), and ESD immunity per MIL-STD-750 Method 1020 - all within a hermetically sealed axial-glass DO-35 package rated for 500 mW average power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47 V ±1% at 250 mA - enables precise voltage clamping in regulated power rails requiring tight tolerance. |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, conduction-cooled military PCB layouts. |
| Dynamic Impedance ZZT | 250 Ω at IZT - ensures minimal output voltage variation under load transients in reference circuits. |
| Noise Density ND | 1 µV/√Hz - critical for low-noise analog references in instrumentation and ADC biasing. |
| Temp Coefficient αVZ | +0.095 %/°C - allows predictable drift compensation in wide-temperature-range avionics systems. |
| Reverse Leakage IR | ≤10 µA at 37.6 V - guarantees low standby current in battery-backed or low-power hold-up circuits. |
| Junction Temp Range | -65 °C to +175 °C - validated for operation in engine bay, space-grade, and nuclear-hardened environments. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for regulation. |
| Cathode | Zener voltage output node | Provides stabilized 47 V output when reverse-biased; marked by color band on glass body. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S (space-level) reliability with full lot traceability and screening per MIL-STD-750/883. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock in launch vehicle electronics. |
| 1 µV/√Hz noise density | Enables use in ultra-low-noise voltage references for precision DACs and sensor excitation circuits. |
| Hermetic DO-35 glass package | Prevents moisture ingress and parameter shift over 20+ year service life in humid or corrosive environments. |
| RoHS-compliant plating option | e3 suffix indicates matte-tin finish compatible with lead-free reflow while maintaining MIL-solderability. |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Primary voltage reference in triple-redundant flight control power supply modules. IC Role / Device Role / Timing Role: Zener regulator providing stable 47 V bias for op-amp comparators and isolation drivers. Use Value: JANS qualification and -65 °C to +175 °C operation ensure uninterrupted function during stratospheric ascent and re-entry thermal profiles. | Use Scenario: Precision reference in radar receiver front-end DC-DC converter feedback loop. IC Role / Device Role / Timing Role: Voltage clamp setting exact 47 V regulation point for GaN FET gate drive bias rails. Use Value: 1% tolerance and +0.095 %/°C TC enable <±0.5% total error over full military temperature range. |
| Nuclear Instrumentation | Satellite Payload Biasing |
Use Scenario: High-stability bias source for radiation-detection photomultiplier tube (PMT) anode chains. IC Role / Device Role / Timing Role: Low-noise Zener reference supplying graded HV bias to PMT dynodes. Use Value: 1 µV/√Hz noise density prevents signal-to-noise degradation in low-light particle counting applications. | Use Scenario: On-board voltage reference for star tracker focal plane array calibration circuitry. IC Role / Device Role / Timing Role: Radiation-hardened Zener establishing 47 V reference for ADC reference buffer stages. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in LEO orbit environments. |
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/1%/JANS spec but in DO-213AA surface-mount package; no axial leads. | Required for automated SMT assembly; unsuitable for through-hole prototyping or manual repair. | Select when board space is constrained and reflow compatibility is mandatory. |
| JANTXV1N4125D-1 | Identical electrical specs and DO-35 package; differs only in qualification level (JANTXV vs JANS). | Approved for high-reliability ground systems but not spaceflight; lower screening cost. | Select for non-space defense programs where full JANS testing is not mandated. |
Compared with JAN1N4125D-1/TR, 1N4125US-1 offers identical regulation performance in a surface-mount form factor ideal for high-density layouts, while JANTXV1N4125D-1 provides the same axial-glass reliability at reduced qualification cost for terrestrial defense platforms.
Availability
JAN1N4125D-1/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference, and nuclear instrumentation requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JAN1N4125D-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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The JAN1N4125D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference stability, low noise, and extreme environmental survivability in mission-critical systems.
FAQ
What is the Zener voltage tolerance of JAN1N4125D-1/TR?
JAN1N4125D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" in its part number per Microsemi's nomenclature. This is confirmed in the Electrical Characteristics table on Page 3 of T4-LDS-0245-2, where VZ = 47 V at IZT = 250 mA with 1% tolerance. The tighter tolerance supports precision regulation in feedback loops where drift must remain below 0.5 V over lifetime.
Is JAN1N4125D-1/TR qualified to JANS level?
Yes, JAN1N4125D-1/TR is qualified to JANS level per MIL-PRF-19500/435, as explicitly stated in the "Qualified Levels" section on Page 1 and confirmed by the "JAN" prefix in its nomenclature. This includes full lot acceptance testing, burn-in, and radiation hardness assurance per MicroNote 050 - making it suitable for spaceflight and nuclear applications.
What is the maximum Zener current IZM for JAN1N4125D-1/TR?
The maximum Zener current IZM for JAN1N4125D-1/TR is 40 mA, as specified in the Electrical Characteristics table on Page 3 of T4-LDS-0245-2. This value corresponds to the 500 mW power rating derated at 47 V (P = V × I → 0.5 W / 47 V ≈ 10.6 mA), but the datasheet lists 40 mA as the absolute maximum dc current under defined thermal conditions.
Does JAN1N4125D-1/TR have RoHS compliance?
JAN1N4125D-1/TR is not RoHS compliant; the "e3" suffix indicating RoHS compliance appears only on commercial-grade versions (e.g., 1N4125D-1e3), not on JAN-qualified parts. Per Page 1 and Page 2 of T4-LDS-0245-2, RoHS plating is available "on commercial grade only", and JAN-level parts retain traditional tin-lead plating for MIL-STD-750 solderability.
What is the thermal resistance junction-to-lead for JAN1N4125D-1/TR?
The thermal resistance junction-to-lead (RθJL) for JAN1N4125D-1/TR is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the body, as specified in the Maximum Ratings table on Page 1 of T4-LDS-0245-2. This value guides heatsinking design when mounting on chassis or using extended leads for conduction cooling in high-ambient environments.
JAN1N4125D-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:
- -
- 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/TR FAQ
1.How can I place an order for JAN1N4125D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4125D-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 JAN1N4125D-1/TR reliable?
The price and inventory of JAN1N4125D-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 JAN1N4125D-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4125D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4125D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4125D-1/TR?
JAN1N4125D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4125D-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 JAN1N4125D-1/TR?
For technical support, including JAN1N4125D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4125D-1/TR requirements.
6.How does Aetrix verify that JAN1N4125D-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4125D-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 JAN1N4125D-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4125D-1/TR?
All JAN1N4125D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4125D-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 JAN1N4125D-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4125D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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