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Microchip Technology JANTX1N4125D-1/TR
- Part No.:
- JANTX1N4125D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4125D-1/TR.pdf
- Description:
- DIODE ZENER 47V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,074
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Product details
Overview
JANTX1N4125D-1/TR from Microsemi is a 47 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 axial package, qualified to JANTX level per MIL-PRF-19500/435, used for precision voltage regulation in military and aerospace power supply reference circuits.
For engineers reviewing the JANTX1N4125D-1/TR datasheet, JANTX1N4125D-1/TR pinout, JANTX1N4125D-1/TR application, or JANTX1N4125D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), temperature coefficient (+0.095 %/°C), dynamic impedance (250 Ω @ 250 mA), noise density (1 µV/√Hz), and MIL-spec qualification level.
Technical Context
This device operates as a two-terminal voltage reference with cathode-banded polarity, requiring reverse-bias operation where the banded end is positive. It delivers stable regulation across –65 °C to +175 °C junction temperature range with 250 °C/W junction-to-lead thermal resistance at 10 mm lead length.
Its metallurgical bond construction ensures low noise (1 µV/√Hz at 47 V), minimal capacitance (typ. <2 pF), and inherent radiation hardness per Microsemi MicroNote 050 - critical for high-reliability analog references in avionics and space-grade systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47.0 V ±1% @ 250 mA - enables precise mid-range DC reference generation with tight initial accuracy. |
| Power Dissipation | 500 mW @ TL = 25 °C - supports stable regulation in compact through-hole designs without forced cooling. |
| Dynamic Impedance ZZT | 250 Ω @ IZT = 250 mA - ensures low output impedance for effective ripple suppression in feedback paths. |
| Temperature Coefficient αVZ | +0.095 %/°C - provides predictable, monotonic drift over temperature for calibrated reference stability. |
| Noise Density ND | 1 µV/√Hz @ 47 V - minimizes broadband noise injection into sensitive analog signal chains. |
| Reverse Leakage IR | 10 µA @ VR = 35.3 V - guarantees low standby current in high-impedance bias networks. |
| Junction Temp Range | –65 °C to +175 °C - enables operation in extreme environmental conditions typical of defense platforms. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to system ground or common return; defines zero-reference potential for regulated output. |
| Cathode | Regulated Output Terminal | Banded end; supplies stable 47 V when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical defense electronics with full lot traceability and screening. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock. |
| 1% Zener voltage tolerance | Reduces need for post-calibration trimming in precision reference designs. |
| Low noise density (1 µV/√Hz) | Preserves signal integrity in low-noise amplifiers and ADC reference buffers. |
| Radiation-hardened design | Meets total ionizing dose (TID) requirements for low-earth orbit and tactical systems per MicroNote 050. |
Applications
| Avionics Power Reference | Spacecraft Sensor Biasing |
|---|---|
Use Scenario: Providing stable 47 V reference for analog-to-digital converter (ADC) front-end circuitry in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC voltage scaling and offset calibration. Use Value: 1% tolerance and +0.095 %/°C TC ensure ≤±1.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Biasing photodiode and op-amp circuits in star tracker optical sensors aboard LEO satellites. IC Role / Device Role / Timing Role: Low-noise, radiation-tolerant Zener reference for analog signal conditioning stages. Use Value: 1 µV/√Hz noise density prevents degradation of weak photocurrent measurements. |
| Tactical Radio RF Stage Bias | Nuclear Instrumentation Calibration |
Use Scenario: Setting gate bias voltage for GaN RF power amplifiers in manpack radios operating across desert and arctic environments. IC Role / Device Role / Timing Role: Temperature-stable DC bias generator for amplifier quiescent point stabilization. Use Value: –65 °C to +175 °C junction rating allows uninterrupted operation during rapid thermal transients. | Use Scenario: Calibrating high-voltage pulse amplitude analyzers used in reactor monitoring systems. IC Role / Device Role / Timing Role: Primary reference standard for periodic recalibration of 40–50 V measurement channels. Use Value: JANTX-level screening and hermetic DO-35 packaging ensure long-term parametric stability in safety-critical instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4125US-1 | Same 47 V, 1% spec but in DO-213AA surface-mount package; no axial leads. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair. | Select when automated assembly and board space reduction are priorities over manual serviceability. |
| JANTXV1N4125D-1 | Identical electrical specs but qualified to higher JANTXV level with extended screening (e.g., burn-in, life test). | Used in launch-critical subsystems where failure probability must be <10−6 per hour. | Select when system-level reliability requirements exceed JANTX baseline, such as guidance electronics. |
Compared with JANTX1N4125D-1/TR, the 1N4125US-1 offers footprint reduction at the cost of through-hole compatibility, while JANTXV1N4125D-1 adds screening rigor without altering regulation performance - enabling tiered qualification matching program risk profiles.
Availability
JANTX1N4125D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, spacecraft sensor biasing, and nuclear instrumentation calibration requiring stable component supply across extended temperature ranges and high-reliability screening levels.
Supply support for JANTX1N4125D-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 defense, aerospace, and industrial markets.
The JANTX1N4125D-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage reference applications in harsh-environment electronics where parametric stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage and tolerance of JANTX1N4125D-1/TR?
JANTX1N4125D-1/TR has a nominal Zener voltage of 47.0 V with a tight ±1% tolerance at 250 mA test current. This tolerance is denoted by the "D" suffix in the part number per Microsemi's nomenclature. The device maintains this specification under thermal equilibrium at 25 °C ambient, and its temperature coefficient is +0.095 %/°C - ensuring predictable drift behavior across its full operating range.
Is JANTX1N4125D-1/TR suitable for high-reliability aerospace applications?
Yes, JANTX1N4125D-1/TR is qualified to JANTX level per MIL-PRF-19500/435, including rigorous screening for vibration, thermal shock, and hermeticity. Its metallurgically bonded DO-35 construction, –65 °C to +175 °C junction rating, and radiation hardness per MicroNote 050 make it appropriate for flight-critical avionics and satellite subsystems where field failure is unacceptable.
What does the "TR" suffix indicate in JANTX1N4125D-1/TR?
The "TR" suffix in JANTX1N4125D-1/TR indicates tape-and-reel packaging per EIA-296 standards, intended for automated pick-and-place assembly. This format includes standardized reel quantities and carrier tape specifications, supporting high-volume manufacturing while preserving full JANTX qualification and traceability for each unit on the reel.
How does the noise performance of JANTX1N4125D-1/TR compare to lower-voltage Zeners?
JANTX1N4125D-1/TR exhibits 1 µV/√Hz noise density at 47 V, consistent with Microsemi's specification that noise falls rapidly below 6.8 V and stabilizes at ~1 µV/√Hz for voltages ≥43 V. This low broadband noise is critical for precision analog circuits, distinguishing it from general-purpose Zeners that may exceed 10 µV/√Hz above 30 V.
Can JANTX1N4125D-1/TR replace commercial-grade 1N4125D-1 in existing designs?
JANTX1N4125D-1/TR shares identical electrical parameters and DO-35 packaging with commercial 1N4125D-1 but adds JANTX-level screening, extended temperature validation, and full MIL-spec documentation. It is a drop-in replacement for enhanced reliability - however, qualification retesting is recommended if the design is certified to DO-160 or MIL-STD-810 due to differing screening evidence packages.
JANTX1N4125D-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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4125D-1/TR FAQ
1.How can I place an order for JANTX1N4125D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4125D-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 JANTX1N4125D-1/TR reliable?
The price and inventory of JANTX1N4125D-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 JANTX1N4125D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4125D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4125D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4125D-1/TR?
JANTX1N4125D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4125D-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 JANTX1N4125D-1/TR?
For technical support, including JANTX1N4125D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4125D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4125D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4125D-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 JANTX1N4125D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4125D-1/TR?
All JANTX1N4125D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4125D-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 JANTX1N4125D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4125D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4125D-1/TR Tags
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