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Microchip Technology JANTX1N4122C-1
- Part No.:
- JANTX1N4122C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4122C-1.pdf
- Description:
- DIODE ZENER 36V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,469
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Product details
Overview
JANTX1N4122C-1 from Microsemi is a 500 mW, 36 V Zener diode with ±2% voltage tolerance, metallurgically bonded glass DO-35 package, and MIL-PRF-19500/435 JANTX qualification for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4122C-1 datasheet, JANTX1N4122C-1 pinout, JANTX1N4122C-1 application, or JANTX1N4122C-1 equivalent, key selection factors include Zener voltage accuracy, low noise density (1 µV/√Hz), thermal resistance (250 °C/W junction-to-lead), and hermetic axial-leaded packaging for stable operation across -65 to +175 °C.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with a nominal Zener voltage of 36 V at 250 mA test current and dynamic impedance of 200 Ω at IZT. Its internal metallurgical bond ensures mechanical robustness under thermal cycling and shock.
It exhibits a positive temperature coefficient of +0.095 %/°C and maximum reverse leakage of 0.01 µA at 28.8 V, enabling stable reference performance over wide temperature ranges without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±2% at 250 mA - provides precise, repeatable reference voltage for analog circuits and power supply feedback loops. |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact, unheatsinked designs with linear derating above 50 °C. |
| Zener Impedance (ZZT) | 200 Ω at 250 mA - ensures minimal output voltage variation under load transients in regulated power rails. |
| Noise Density | 1 µV/√Hz - enables use in low-noise references for precision ADCs, DACs, and instrumentation amplifiers. |
| Temp Coefficient (αVZ) | +0.095 %/°C - predictable drift allows accurate system-level temperature compensation in critical avionics systems. |
| Reverse Leakage (IR) | 0.01 µA at 28.8 V - guarantees negligible standby current in battery-backed or low-power hold-up circuits. |
| Junction Temp Range | -65 to +175 °C - qualified for extended-range operation in satellite power converters and engine control units. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to circuit common; establishes return path for Zener current and defines regulation reference point. |
| Cathode | Zener Output Terminal | Banded end; supplies regulated 36 V when reverse biased - must be held at higher potential than anode during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for space-grade and military platforms requiring traceable lot data and screening per Level 1 requirements. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock, ensuring long-term stability in cyclic environments like launch vibration and orbital thermal cycling. |
| Low noise density (1 µV/√Hz) | Enables direct use in ultra-low-noise voltage references without additional filtering, reducing BOM count in precision timing and sensor signal chains. |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion in humid or saline environments - critical for naval electronics and airborne radar power supplies. |
| ±2% Zener tolerance (C suffix) | Reduces need for post-assembly trimming in production, lowering test time and calibration cost in high-volume avionics manufacturing. |
Applications
| Avionics Power Reference | Satellite DC-DC Feedback |
|---|---|
Use Scenario: Providing stable 36 V reference for error amplifiers in triple-redundant flight control power modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating feedback node of isolated flyback controller. Use Value: ±2% tolerance and +0.095 %/°C TC ensure <±0.5% total error over -55 to +125 °C, meeting DO-160E Section 22 thermal compliance. | Use Scenario: Biasing reference input of radiation-hardened PWM controller in LEO satellite bus converter. IC Role / Device Role / Timing Role: Precision Zener element establishing primary output voltage setpoint in closed-loop regulation. Use Value: Inherent radiation hardness per MicroNote 050 and 0.01 µA IR at 28.8 V prevent latch-up or drift-induced mission failure in 100 krad(Si) TID environments. |
| Ground-Based Radar PSU | Tactical Radio Bias Supply |
Use Scenario: Generating clean 36 V bias rail for GaN RF amplifier gate drivers in S-band radar transmitters. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying stable gate voltage independent of main DC bus ripple. Use Value: 1 µV/√Hz noise density prevents AM sideband degradation in 2.7–2.9 GHz transmit spectra, maintaining spectral mask compliance. | Use Scenario: Regulating local 36 V supply for FPGA configuration memory and RF front-end ICs in manpack radios. IC Role / Device Role / Timing Role: Compact, high-reliability Zener providing fault-tolerant voltage clamp during ESD events per MIL-STD-461G CS114. Use Value: Non-sensitive to ESD per MIL-STD-750 Method 1020 and hermetic seal ensure no latent damage after repeated 8 kV contact discharge exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JAN1N4122C-1 | JAN level qualification (lower screening severity than JANTX); same electrical specs and DO-35 package. | Limited to non-critical subsystems where full JANTX burn-in and life test not mandated. | Select when cost sensitivity outweighs requirement for extended reliability screening per MIL-PRF-19500/435 Table I. |
| JANS1N4122C-1 | JANS level qualification (highest screening including radiation testing); identical Zener parameters and thermal ratings. | Required for flight-critical systems in manned spacecraft and nuclear command links where single-event effects must be mitigated. | Select only when full JANS radiation hardness certification and lot traceability per MIL-PRF-19500/435 Table III are contractually required. |
Compared with JAN1N4122C-1 and JANS1N4122C-1, the JANTX1N4122C-1 delivers balanced reliability and cost for avionics power regulation - offering full JANTX screening without JANS-level radiation testing overhead, making it optimal for certified UAVs and tactical comms platforms.
Availability
JANTX1N4122C-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC feedback, and ground-based radar PSU applications requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4122C-1 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 JANTX1N4122C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in safety-critical power systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4122C-1?
The JANTX1N4122C-1 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This is confirmed in the nomenclature table on page 2 of T4-LDS-0245-2 Rev. 1, where "C = 2%" is explicitly defined. The nominal Zener voltage is 36 V at 250 mA test current, measured under thermal equilibrium at 25 °C.
Is JANTX1N4122C-1 RoHS compliant?
No, JANTX1N4122C-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, while JANTX-level devices retain traditional tin-lead plating to meet MIL-STD-750 solderability requirements and ensure compatibility with legacy military assembly processes.
What is the maximum reverse leakage current for JANTX1N4122C-1?
The maximum reverse leakage current (IR) for JANTX1N4122C-1 is 0.01 µA at VR = 28.8 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This ultra-low leakage supports high-impedance bias networks and minimizes standby power loss in battery-dependent systems.
Does JANTX1N4122C-1 require heatsinking in standard operation?
No, JANTX1N4122C-1 does not require external heatsinking for operation at ≤500 mW within its derating curve. Its thermal resistance junction-to-lead is 250 °C/W with 3/8″ lead length, and power linearly derates from 500 mW at 25 °C ambient to zero at 175 °C - sufficient for most through-hole mounted applications on FR4 PCBs with standard copper pads.
How is polarity marked on JANTX1N4122C-1?
JANTX1N4122C-1 uses a cathode band for polarity marking, as stated in the Mechanical and Packaging section (page 2). The banded end is the cathode and must be held at a higher potential than the anode to achieve Zener regulation - incorrect orientation results in forward conduction (~1.1 V drop) rather than voltage regulation.
JANTX1N4122C-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 27.4 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)
JANTX1N4122C-1 FAQ
1.How can I place an order for JANTX1N4122C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4122C-1 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 JANTX1N4122C-1 reliable?
The price and inventory of JANTX1N4122C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4122C-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4122C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4122C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4122C-1?
JANTX1N4122C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4122C-1 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 JANTX1N4122C-1?
For technical support, including JANTX1N4122C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4122C-1 requirements.
6.How does Aetrix verify that JANTX1N4122C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4122C-1 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 JANTX1N4122C-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4122C-1?
All JANTX1N4122C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4122C-1, 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 JANTX1N4122C-1 part is unused and in its original packaging.
Return procedure for JANTX1N4122C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4122C-1 Tags
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