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Microchip Technology JAN1N4125-1/TR
- Part No.:
- JAN1N4125-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4125-1/TR.pdf
- Description:
- DIODE ZENER 47V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,332
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Product details
Overview
JAN1N4125-1/TR from Microsemi is a 47 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JAN level per MIL-PRF-19500/435, with ±5% voltage tolerance, 250 mA test current, and 250 Ω dynamic impedance - used for precision voltage regulation in military-grade power supply reference circuits.
For engineers reviewing the JAN1N4125-1/TR datasheet, JAN1N4125-1/TR pinout, JAN1N4125-1/TR application, or JAN1N4125-1/TR equivalent, key selection criteria include Zener voltage accuracy at 250 mA, low noise density (1 µV/√Hz), JANS-qualified thermal stability (−65 °C to +175 °C), and hermetic DO-35 packaging for high-reliability analog references.
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 a temperature coefficient of +0.095 %/°C and dynamic impedance of 250 Ω at IZT. Its metallurgical bond construction ensures stable regulation across wide current (up to 35.8 mA max Zener current) and temperature ranges.
Designed for high-reliability applications, JAN1N4125-1/TR meets MIL-PRF-19500/435 requirements for JAN-level qualification, including hermetic glass sealing, non-ESD-sensitive behavior per MIL-STD-750 Method 1020, and radiation hardness per Microsemi MicroNote 050 - enabling use in avionics, space-qualified instrumentation, and hardened industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V at 250 mA - defines stable regulation point for reference design |
| Power Dissipation | 500 mW at 25 °C - sets maximum continuous DC power handling |
| Zener Impedance (ZZT) | 250 Ω at 250 mA - determines output voltage variation under load changes |
| Noise Density (ND) | 1 µV/√Hz - enables low-noise analog references in precision measurement |
| Temp Coefficient (αVZ) | +0.095 %/°C - quantifies voltage drift over operating temperature range |
| Max Reverse Current (IR) | 10 nA at 37.6 V - specifies leakage below regulation threshold |
| Junction Temp Range | −65 °C to +175 °C - supports operation in extreme environmental conditions |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference terminal | Connected to system ground or lower-potential node during regulation |
| Cathode | Zener voltage output terminal | Banded end supplies regulated 47 V when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures long-term parameter stability and reduced aging drift in critical references |
| MIL-PRF-19500/435 JAN qualification | Validates reliability for defense/aerospace applications requiring traceable screening |
| Low noise density (1 µV/√Hz) | Supports high-resolution ADC references and low-jitter timing circuits |
| Hermetic glass DO-35 package | Prevents moisture ingress and parametric shift in humid or corrosive environments |
| Radiation-hardened design | Enables use in space electronics without additional shielding or derating |
Applications
| Aerospace Power Reference | Avionics Sensor Biasing |
|---|---|
Use Scenario: Stable 47 V reference in satellite power conditioning units where voltage drift must remain <±0.1% over −55 °C to +125 °C. IC Role / Device Role / Timing Role: Primary Zener reference for isolated DC-DC converter feedback loops. Use Value: JAN-level qualification and radiation hardness ensure uninterrupted operation in LEO missions without recalibration. | Use Scenario: Biasing high-impedance piezoresistive pressure sensors in flight control systems requiring ultra-low leakage. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage source for sensor excitation circuitry. Use Value: 10 nA reverse current at 37.6 V minimizes sensor offset error; 1 µV/√Hz noise preserves signal-to-noise ratio. |
| Military Radio Transceiver Supply | Hardened Industrial PLC Analog Input |
Use Scenario: Regulation of local 47 V rail for RF power amplifier bias in manpack radios exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Temperature-stable shunt regulator maintaining constant bias under varying load and ambient conditions. Use Value: +0.095 %/°C tempco and 250 Ω impedance limit voltage deviation to <±200 mV across −40 °C to +85 °C. | Use Scenario: Precision reference for 16-bit analog input modules in oilfield control cabinets operating at 85 °C ambient. IC Role / Device Role / Timing Role: High-reliability Zener element in ratiometric measurement front-ends. Use Value: Hermetic DO-35 package prevents humidity-induced parameter shift; MIL-qualified screening ensures field longevity. |
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 voltage and DO-35 package, but JANTXV-qualified (not JAN); RoHS-compliant lead finish. | Approved for higher-tier aerospace programs requiring JANTXV screening; lacks JAN-level burn-in and lot traceability. | Select when RoHS compliance is mandatory and JANTXV qualification suffices for program requirements. |
| 1N4756A | 47 V, 1 W rating, DO-41 package, commercial grade only; ±5% tolerance, 200 Ω impedance, no MIL qualification. | Higher power capability but no military screening, hermetic seal, or radiation hardness; unsuitable for defense/space use. | Choose only for cost-sensitive commercial designs where MIL-spec reliability is not required. |
Compared with 1N4125US-1 and 1N4756A, JAN1N4125-1/TR uniquely delivers JAN-level screening, hermetic glass packaging, and radiation hardness - making it the sole option for legacy defense platforms requiring full MIL-PRF-19500/435 compliance at 47 V.
Availability
JAN1N4125-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, avionics sensor biasing, and military radio transceiver supply requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4125-1/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 components for aerospace, defense, and industrial markets.
JAN1N4125-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage reference applications in mission-critical systems where parameter stability, hermeticity, and radiation tolerance are non-negotiable.
FAQ
What is the Zener voltage tolerance for JAN1N4125-1/TR?
JAN1N4125-1/TR has a nominal Zener voltage of 47 V with a standard tolerance of ±5%, as defined by its JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at 250 mA test current and 25 °C ambient temperature.
Is JAN1N4125-1/TR RoHS compliant?
No - JAN1N4125-1/TR is not RoHS compliant. Per the nomenclature guide on page 2, the "e3" suffix denotes RoHS compliance, which is only available on commercial-grade versions. JAN1N4125-1/TR carries no e3 suffix and uses tin-lead plating per MIL-STD-750.
What is the maximum Zener current (IZM) for JAN1N4125-1/TR?
The maximum Zener current for JAN1N4125-1/TR is 35.8 mA, derived from the 500 mW power rating and 47 V Zener voltage (IZM = PM(AV)/VZ ≈ 500 mW / 47 V). This value matches the "MAXIMUM ZENER CURRENT IZM" column entry for 1N4125-1 on page 3 of the datasheet.
Does JAN1N4125-1/TR have a specified noise density?
Yes - JAN1N4125-1/TR has a maximum noise density of 1 µV/√Hz, as listed in the Electrical Characteristics table for 1N4125-1. This low noise performance is consistent with the family's specification that noise falls to 1 µV/√Hz at lower voltages, supporting precision analog reference designs.
What does the "TR" suffix indicate in JAN1N4125-1/TR?
The "TR" suffix in JAN1N4125-1/TR indicates tape-and-reel packaging per EIA-296 standard, as stated in the Mechanical and Packaging section on page 2. It does not affect electrical specifications or qualification level - JAN1N4125-1/TR retains full JAN-level MIL-PRF-19500/435 compliance in tape-and-reel format.
JAN1N4125-1/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:
- ±5%
- 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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JAN1N4125-1/TR FAQ
1.How can I place an order for JAN1N4125-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4125-1/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 JAN1N4125-1/TR reliable?
The price and inventory of JAN1N4125-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4125-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4125-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4125-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4125-1/TR?
JAN1N4125-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4125-1/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 JAN1N4125-1/TR?
For technical support, including JAN1N4125-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4125-1/TR requirements.
6.How does Aetrix verify that JAN1N4125-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4125-1/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 JAN1N4125-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4125-1/TR?
All JAN1N4125-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4125-1/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 JAN1N4125-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4125-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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