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Microchip Technology JANS1N4125C-1/TR
- Part No.:
- JANS1N4125C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4125C-1/TR.pdf
- Description:
- DIODE ZENER 47V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,780
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Product details
Overview
JANS1N4125C-1/TR from Microsemi is a 47 V, 2% 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 voltage regulation. It delivers stable reference voltage under wide current (250 mA test) and temperature (-65°C to +175°C) ranges, with low dynamic impedance (250 Ω) and noise density (40 µV/√Hz).
For engineers reviewing the JANS1N4125C-1/TR datasheet, JANS1N4125C-1/TR pinout, JANS1N4125C-1/TR application, or JANS1N4125C-1/TR equivalent, this page provides verified electrical specs, military qualification status, thermal derating behavior, Zener impedance vs. current, and RoHS-compliant tape-and-reel availability.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures mechanical robustness and long-term stability under thermal cycling and radiation exposure.
It exhibits a positive temperature coefficient of +0.095 %/°C, enabling predictable drift compensation in reference circuits. Rated at 47 V nominal Zener voltage at 250 mA test current, it maintains regulation across 1 mA to 35.8 mA operating range with ≤250 Ω dynamic impedance at IZT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47 V ±2% at 250 mA - defines precise regulation point for reference design |
| Power Dissipation | 500 mW at 25°C lead temp - sets maximum continuous power before thermal derating |
| Dynamic Impedance ZZT | 250 Ω max at 250 mA - determines output voltage variation under load transients |
| Reverse Leakage IR | 10 µA max at 37.6 V - ensures minimal error current in high-impedance bias networks |
| Temp Coefficient αVZ | +0.095 %/°C - enables predictable voltage drift compensation in temperature-critical systems |
| Noise Density ND | 40 µV/√Hz at 25°C - limits contribution to analog signal path noise floor |
| Junction Temp Range | -65°C to +175°C - supports operation in extreme environmental conditions |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt regulator topology |
| Cathode | Regulated output node | Provides stable 47 V output when reverse-biased; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for space-grade reliability, including radiation hardness per MicroNote 050 |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration |
| 2% Zener voltage tolerance | Reduces need for post-calibration trimming in precision reference designs |
| Low capacitance (typ. <1 pF) | Minimizes high-frequency loading in RF bias and timing circuits |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Enables handling without special ESD controls during assembly |
Applications
| Avionics Power Reference | Satellite Voltage Monitor |
|---|---|
Use Scenario: Provides stable 47 V reference for ADC input scaling in flight control sensor interfaces. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for analog front-end circuitry. Use Value: JANS-level qualification ensures uninterrupted operation during launch vibration and deep-space thermal cycling. | Use Scenario: Serves as overvoltage detection threshold in satellite bus protection circuitry. IC Role / Device Role / Timing Role: Precision Zener clamp triggering crowbar circuit at 47 V ±0.94 V. Use Value: 2% tolerance enables accurate trip-point setting without calibration, reducing BOM count. |
| Nuclear Instrumentation Bias | Tactical Radio RF Stage Bias |
Use Scenario: Supplies regulated bias to photomultiplier tube anodes in radiation-hardened spectrometers. IC Role / Device Role / Timing Role: High-stability shunt regulator maintaining constant gain across -55°C to +125°C. Use Value: +0.095 %/°C tempco allows predictable drift modeling for software compensation. | Use Scenario: Sets gate bias for GaN PA stages in manpack radios operating in desert environments. IC Role / Device Role / Timing Role: Low-noise (40 µV/√Hz), low-capacitance Zener reference for RF amplifier DC bias network. Use Value: Minimal added noise preserves receiver sensitivity; DO-35 axial leads simplify manual rework in field-deployable units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4125C-1 | Same 47 V/2%/500 mW spec, but qualified only to JANTXV level (not JANS); lower radiation hardness assurance | Lacks full JANS-level screening for total ionizing dose (TID) and displacement damage | Select when radiation environment is less severe and cost reduction is prioritized |
| 1N4125C-1/TR | Commercial-grade version; identical electrical specs but no MIL-PRF-19500 qualification | Not suitable for flight hardware; limited to ground-test or non-safety-critical subsystems | Choose for prototyping or commercial derivatives where qualification overhead is unnecessary |
Compared with JANS1N4125C-1/TR, JANTXV1N4125C-1 offers reduced screening rigor while retaining identical regulation performance, whereas 1N4125C-1/TR eliminates military qualification entirely-enabling faster procurement and lower cost where environmental robustness is secondary to functional equivalence.
Availability
JANS1N4125C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage monitor, and nuclear instrumentation bias requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANS1N4125C-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.
The JANS1N4125C-1/TR belongs to Microsemi's legacy 1N4099–1N4135 Zener series designed specifically for mil-spec voltage regulation in mission-critical systems where long-term stability, radiation tolerance, and thermal resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JANS1N4125C-1/TR?
JANS1N4125C-1/TR has a nominal Zener voltage of 47 V with a tight ±2% tolerance, indicated by the "C" suffix in its nomenclature. This tolerance is guaranteed across the full operating temperature range (-65°C to +175°C) and qualifies the device for precision reference applications where post-manufacturing calibration is impractical. The 2% tolerance applies at the specified test current of 250 mA.
Is JANS1N4125C-1/TR RoHS compliant?
JANS1N4125C-1/TR is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with e3 suffix) are available only for commercial-grade parts-not for JAN, JANTX, JANTXV, or JANS levels. The JANS1N4125C-1/TR uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements and ensure long-term reliability under thermal cycling.
What does the "TR" suffix mean in JANS1N4125C-1/TR?
The "TR" suffix in JANS1N4125C-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated placement in high-volume manufacturing. This format includes moisture-sensitive packaging and is supplied in reels compatible with standard pick-and-place equipment. The underlying electrical and qualification specifications remain identical to the bulk version.
How does the temperature coefficient affect JANS1N4125C-1/TR in precision circuits?
JANS1N4125C-1/TR has a temperature coefficient of +0.095 %/°C, meaning its Zener voltage increases predictably with rising temperature. In precision circuits, this allows designers to model and compensate for drift-especially critical in avionics and satellite systems where ambient temperature swings exceed 100°C. The coefficient is measured over the full -65°C to +175°C junction range.
Can JANS1N4125C-1/TR be used in surface-mount designs?
No-JANS1N4125C-1/TR is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case and is not suitable for surface-mount assembly. For SMT-compatible alternatives, Microsemi offers the 1N4125C-1UR (DO-213AA) and 1PMT4125 (DO-216) variants, though these lack JANS qualification and differ in thermal resistance and mounting mechanics.
JANS1N4125C-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:
- ±2%
- 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)
JANS1N4125C-1/TR FAQ
1.How can I place an order for JANS1N4125C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4125C-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 JANS1N4125C-1/TR reliable?
The price and inventory of JANS1N4125C-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 JANS1N4125C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4125C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4125C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4125C-1/TR?
JANS1N4125C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4125C-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 JANS1N4125C-1/TR?
For technical support, including JANS1N4125C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4125C-1/TR requirements.
6.How does Aetrix verify that JANS1N4125C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4125C-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 JANS1N4125C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4125C-1/TR?
All JANS1N4125C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4125C-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 JANS1N4125C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4125C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4125C-1/TR Tags
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