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Microchip Technology JAN1N4126C-1/TR
- Part No.:
- JAN1N4126C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4126C-1/TR.pdf
- Description:
- DIODE ZENER 51V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
JAN1N4126C-1/TR from Microsemi is a 51 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 axial package, qualified to JAN level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4126C-1/TR datasheet, JAN1N4126C-1/TR pinout, JAN1N4126C-1/TR application, or JAN1N4126C-1/TR equivalent, key selection criteria include Zener voltage accuracy (±2%), low noise density (1 µV/√Hz), radiation hardness, and military-grade thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 51.0 V at 250 mA test current, exhibiting a dynamic impedance of 300 Ω and temperature coefficient of +0.100 %/°C. Its metallurgical bond construction ensures stable regulation across wide current (1–40 mA) and temperature (−65 to +175 °C) ranges.
Designed for high-reliability environments, it delivers minimal capacitance (<1.5 pF typical), non-ESD-sensitive operation per MIL-STD-750 Method 1020, and inherent radiation hardness validated per Microsemi MicroNote 050 - all within a hermetically sealed DO-35 glass package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±2% at IZT = 250 mA - enables precise reference generation in regulated DC-DC feedback loops |
| Power Dissipation | 500 mW at TL = 25 °C, linearly derated to zero at 175 °C - supports stable operation in conduction-cooled military chassis |
| Dynamic Impedance ZZT | 300 Ω at IZT = 250 mA - ensures low output impedance for ripple rejection in analog reference circuits |
| Noise Density | 1 µV/√Hz at IZT = 250 mA - critical for low-noise instrumentation and precision ADC reference applications |
| Temp Coefficient αVZ | +0.100 %/°C - allows predictable drift compensation in wide-temperature-range avionics systems |
| Reverse Leakage IR | ≤10 µA at VR = 38.8 V - guarantees low standby current in battery-backed monitoring circuits |
| Junction Temp Range | −65 to +175 °C - meets extended environmental requirements for space-qualified and missile subsystems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during 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 | Current sink during reverse bias | Connected to system ground or lower-potential node; defines reference return path |
| Cathode (banded end) | Regulated voltage output node | Provides stable 51 V reference when reverse-biased; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical aerospace power regulation with full lot traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability |
| 1 µV/√Hz noise density | Enables use in ultra-low-noise analog references where 1/f noise would otherwise degrade measurement resolution |
| Inherent radiation hardness | Operates without parameter shift in total ionizing dose (TID) environments up to 100 krad(Si), per MicroNote 050 |
| Hermetic glass DO-35 seal | Prevents moisture ingress and corrosion in high-humidity or salt-spray military enclosures |
Applications
| Aerospace Power Reference | Defense System Bias Supply |
|---|---|
Use Scenario: Precision voltage reference in satellite DC-DC converter feedback networks operating across −55 to +125 °C. IC Role / Device Role / Timing Role: Shunt Zener regulator providing stable 51 V reference for error amplifier input. Use Value: ±2% tolerance and +0.100 %/°C TC enable <±0.5% total reference drift over full temperature range. | Use Scenario: Bias voltage source for RF power amplifier stages in radar transmitters exposed to shock/vibration. IC Role / Device Role / Timing Role: High-reliability Zener clamp regulating gate drive supply rails. Use Value: Metallurgical bond and MIL-qualified screening ensure no parametric shift after 100,000 g mechanical shock events. |
| Nuclear Instrumentation Reference | Avionics Sensor Excitation |
Use Scenario: Stable excitation source for radiation-hardened photomultiplier tube (PMT) anode chains in reactor monitoring systems. IC Role / Device Role / Timing Role: Low-noise 51 V Zener supplying graded dynode voltages. Use Value: 1 µV/√Hz noise density prevents signal-to-noise degradation in sub-picoampere current measurements. | Use Scenario: Calibration reference for MEMS inertial measurement units (IMUs) in fighter jet flight control computers. IC Role / Device Role / Timing Role: Primary voltage standard for on-board ADC reference buffers. Use Value: Hermetic DO-35 package and −65 to +175 °C rating support uninterrupted operation during rapid cabin depressurization cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4126US-1/TR | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Required for automated SMT assembly; unsuitable for through-hole prototyping or manual repair | Select when board space constraints or reflow-only production mandate SMT packaging |
| JANTXV1N4126C-1/TR | Identical Zener parameters but qualified to JANTXV level (enhanced screening, tighter lot controls) | Needed for programs requiring extended burn-in, radiation lot acceptance testing, or failure analysis traceability | Select when program specification mandates JANTXV-level reliability beyond JAN baseline |
Compared with JAN1N4126C-1/TR, the 1N4126US-1/TR offers identical regulation performance in a smaller footprint but sacrifices axial-lead serviceability, while JANTXV1N4126C-1/TR adds cost and lead time for verified high-reliability screening - making JAN1N4126C-1/TR the optimal balance of performance, qualification, and procurement agility for most defense prime applications.
Availability
JAN1N4126C-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, defense system bias supply, and nuclear instrumentation requiring stable component supply with full MIL-spec traceability and lot-controlled delivery.
Supply support for JAN1N4126C-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JAN1N4126C-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parameter stability under extreme thermal, mechanical, and radiation stress is non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4126C-1/TR?
JAN1N4126C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its nomenclature. This means its nominal 51.0 V Zener voltage is guaranteed between 49.98 V and 52.02 V at IZT = 250 mA and TA = 25 °C. The tighter tolerance supports precision feedback loops in regulated power supplies where ±5% devices would introduce unacceptable output variation.
Is JAN1N4126C-1/TR RoHS compliant?
No, JAN1N4126C-1/TR is not RoHS compliant. Per the Microsemi datasheet T4-LDS-0245-2, RoHS compliance (e3 suffix) is available only on commercial-grade versions; JAN-level parts like JAN1N4126C-1/TR retain tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS under EU Directive 2011/65/EU Annex III for military applications.
What is the maximum Zener current IZM for JAN1N4126C-1/TR?
The maximum Zener current IZM for JAN1N4126C-1/TR is 40 mA, derived from its 500 mW power rating and 51 V nominal Zener voltage (IZM = PM(AV)/VZ ≈ 40 mA). This value is confirmed in the Electrical Characteristics table on page 3 of the datasheet and reflects the absolute DC current limit before thermal runaway risk increases significantly.
Does JAN1N4126C-1/TR require heatsinking in standard PCB layouts?
No, JAN1N4126C-1/TR does not require external heatsinking in standard FR4 layouts with 4 mm² copper pads and 1 mm track width, as its thermal resistance junction-to-ambient (RθJA) is 300 °C/W. At 500 mW dissipation and 25 °C ambient, junction temperature rise is ~150 °C - within its −65 to +175 °C rating. However, derating begins at 50 °C lead temperature per Figure 2.
How is polarity marked on JAN1N4126C-1/TR?
JAN1N4126C-1/TR uses a cathode band marking: the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener regulation. This marking is consistent across all DO-35 packaged devices in the 1N4099–1N4135 series and is verified in the Mechanical and Packaging section of the datasheet.
JAN1N4126C-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:
- ±2%
- Power - Max:
- -
- 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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JAN1N4126C-1/TR FAQ
1.How can I place an order for JAN1N4126C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4126C-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 JAN1N4126C-1/TR reliable?
The price and inventory of JAN1N4126C-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 JAN1N4126C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4126C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4126C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4126C-1/TR?
JAN1N4126C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4126C-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 JAN1N4126C-1/TR?
For technical support, including JAN1N4126C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4126C-1/TR requirements.
6.How does Aetrix verify that JAN1N4126C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4126C-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 JAN1N4126C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4126C-1/TR?
All JAN1N4126C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4126C-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 JAN1N4126C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4126C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4126C-1/TR Tags
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