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Microchip Technology JANS1N4126D-1/TR
- Part No.:
- JANS1N4126D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4126D-1/TR.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,579
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Product details
Overview
JANS1N4126D-1/TR from Microsemi is a 51 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 300 Ω dynamic impedance, low noise density (1 µV/√Hz), and radiation-hardened performance.
For engineers reviewing the JANS1N4126D-1/TR datasheet, JANS1N4126D-1/TR pinout, JANS1N4126D-1/TR application, or JANS1N4126D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), JANS-level qualification, thermal resistance (250 °C/W junction-to-lead), noise density at 51 V, and axial-leaded DO-35 mechanical compatibility in harsh-environment PCB layouts.
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 stable long-term Zener voltage drift under thermal cycling and radiation exposure.
The JANS1N4126D-1/TR exhibits a +0.100 %/°C temperature coefficient above 50 V, supports 38.8 mA maximum Zener current at rated power, and maintains ≤0.01 µA reverse leakage at 38.8 V, enabling use in reference circuits where stability over temperature and time is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±1% at 250 mA - ensures tight regulation tolerance for precision reference designs |
| Power Dissipation | 500 mW at 25 °C lead temperature - defines maximum continuous DC power handling before derating |
| Dynamic Impedance ZZT | 300 Ω at 250 mA - determines output voltage variation under load current changes |
| Noise Density | 1 µV/√Hz at 51 V - enables low-noise analog references in sensitive instrumentation |
| Temp Coefficient αVZ | +0.100 %/°C - quantifies voltage drift magnitude per degree Celsius rise above 25 °C |
| Max Reverse Leakage IR | 0.01 µA at 38.8 V - confirms minimal parasitic current in off-state biasing |
| Junction Temp Range | –65 to +175 °C - supports operation in extended-temperature military and space environments |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by single black band; weight ≈ 0.2 g; body diameter 1.42–2.29 mm, length 3.56–5.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lowest potential point in shunt regulator configuration |
| Cathode | Reverse breakdown terminal / regulated output node | Banded end; connected to input supply rail to sink excess current and clamp voltage at 51 V |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets highest reliability screening for space-grade and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| 1 µV/√Hz noise density | Enables use in low-noise voltage references for ADC/DAC biasing and sensor excitation |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift in humid or vacuum environments |
Applications
| Avionics Power Reference | Satellite Payload Biasing |
|---|---|
Use Scenario: Provides stable 51 V reference for analog-to-digital converter front-end circuitry in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise DC bias point for signal conditioning amplifiers. Use Value: 1% tolerance and +0.100 %/°C tempco ensure <±0.5% reference error across –55 to +125 °C operational range. | Use Scenario: Supplies regulated bias voltage to photodiode amplifier stages in Earth observation imaging sensors. IC Role / Device Role / Timing Role: Low-noise Zener reference source for transimpedance amplifier feedback networks. Use Value: 1 µV/√Hz noise density prevents degradation of sub-picoamp photocurrent measurement resolution. |
| Nuclear Instrumentation | Tactical Radio RF Stage Bias |
Use Scenario: Serves as voltage clamp in radiation detector pulse-shaping circuits exposed to high TID environments. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining stable threshold voltage for comparator inputs. Use Value: Inherent radiation hardness eliminates need for shielding or derating in gamma-ray spectrometry modules. | Use Scenario: Regulates gate bias for GaN power amplifiers in manpack HF/VHF radios operating in desert conditions. IC Role / Device Role / Timing Role: High-temperature-stable Zener element setting quiescent current in Class AB RF final stages. Use Value: Junction temperature rating up to +175 °C allows uninterrupted operation at case temperatures exceeding 120 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4126D-1 | Same 51 V, 1% Zener voltage and DO-35 package; qualified to JANTXV level (lower screening rigor than JANS) | Lacks full JANS radiation and burn-in requirements; suitable for non-space-grade avionics | Select when full JANS qualification is not mandated but MIL-PRF-19500 compliance is required |
| 1N4126DUR-1 | Same electrical specs; surface-mount DO-213AA package instead of axial DO-35 | Requires PCB re-layout for SMT assembly; unsuitable for through-hole or wire-wrap prototyping | Select when automated SMT production and board space constraints outweigh manual assembly needs |
Compared with JANTXV1N4126D-1 and 1N4126DUR-1, the JANS1N4126D-1/TR provides the highest reliability assurance for mission-critical systems, with verified radiation hardness and extended temperature operation-making it the only choice for spaceflight and strategic defense platforms where failure is not an option.
Availability
JANS1N4126D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite payload biasing, nuclear instrumentation, and tactical radio RF stage bias applications requiring stable component supply under extended temperature and radiation exposure conditions.
Supply support for JANS1N4126D-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, radiation-hardened, and aerospace-grade components.
The JANS1N4126D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode product line, engineered specifically for voltage reference and regulation in defense electronics, space systems, and nuclear instrumentation where parameter stability under extreme environmental stress is mandatory.
FAQ
What is the Zener voltage tolerance of JANS1N4126D-1/TR?
The JANS1N4126D-1/TR has a nominal Zener voltage of 51.0 V with a ±1% tolerance, as indicated by the "D" suffix in its part number per Microsemi's nomenclature. This tolerance is guaranteed under standard test conditions at 25 °C with 250 mA Zener test current, and applies across the full qualified temperature range when used within derated power limits.
Is JANS1N4126D-1/TR RoHS compliant?
No, the JANS1N4126D-1/TR is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants-not for JANS-level devices. The JANS1N4126D-1/TR uses traditional tin-lead plating on its axial leads to meet MIL-STD-750 solderability requirements for high-reliability military assemblies.
What does the "TR" suffix mean in JANS1N4126D-1/TR?
The "TR" suffix in JANS1N4126D-1/TR indicates tape-and-reel packaging per EIA-296 standard, intended for automated pick-and-place assembly. This format contains the same JANS-qualified device as the bulk version but supplied in industry-standard carrier tape with 2,000 units per reel, enabling high-volume manufacturing without manual handling.
How is the polarity marked on JANS1N4126D-1/TR?
The JANS1N4126D-1/TR uses a single black band on the glass body to mark the cathode terminal. When operated in Zener regulation mode, the banded end must be held at a higher potential than the anode (i.e., reverse biased), allowing current to flow from cathode to anode to maintain 51 V across the device.
What is the maximum Zener current for JANS1N4126D-1/TR at 25 °C?
The maximum Zener current (IZM) for JANS1N4126D-1/TR is 38.8 mA at 25 °C lead temperature, derived from its 500 mW power rating and 51 V Zener voltage (P = V × I). This value assumes ideal heat sinking; actual usable current decreases linearly above 50 °C lead temperature per the published derating curve.
JANS1N4126D-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):
- 51 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 38.8 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)
JANS1N4126D-1/TR FAQ
1.How can I place an order for JANS1N4126D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4126D-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 JANS1N4126D-1/TR reliable?
The price and inventory of JANS1N4126D-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 JANS1N4126D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4126D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4126D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4126D-1/TR?
JANS1N4126D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4126D-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 JANS1N4126D-1/TR?
For technical support, including JANS1N4126D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4126D-1/TR requirements.
6.How does Aetrix verify that JANS1N4126D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4126D-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 JANS1N4126D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4126D-1/TR?
All JANS1N4126D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4126D-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 JANS1N4126D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4126D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4126D-1/TR Tags
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