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Microchip Technology JANTXV1N4122C-1
- Part No.:
- JANTXV1N4122C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTXV1N4122C-1.pdf
- Description:
- DIODE ZENER 36V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,866
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Product details
Overview
JANTXV1N4122C-1 from Microsemi is a 500 mW, 36 V, ±2% tolerance metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTXV level for high-reliability voltage regulation in aerospace and defense power supplies, reference circuits, and overvoltage protection.
For engineers reviewing the JANTXV1N4122C-1 datasheet, JANTXV1N4122C-1 pinout, JANTXV1N4122C-1 application, or JANTXV1N4122C-1 equivalent, key selection criteria include its 36 V nominal Zener voltage at 250 mA test current, 200 Ω dynamic impedance, 0.01 µA maximum reverse leakage at 28.8 V, ±2% voltage tolerance, and -65 °C to +175 °C operating temperature range.
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 performance under thermal cycling and radiation exposure.
It exhibits a positive temperature coefficient of +0.095 %/°C and delivers low noise density (1 µV/√Hz typical at lower voltages), making it suitable for analog reference and low-noise biasing applications where stability across wide temperature ranges is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 36 V at 250 mA - defines regulated output voltage under standard test conditions |
| Zener Tolerance | ±2% - tighter than standard 5% parts, enabling higher-accuracy voltage references |
| Power Dissipation | 500 mW - supports stable regulation up to 13.9 mA at 36 V before thermal derating begins |
| Dynamic Impedance | 200 Ω at 250 mA - determines regulation stiffness and output voltage variation under load changes |
| Reverse Leakage Current | 0.01 µA at 28.8 V - ensures minimal parasitic current in high-impedance bias networks |
| Temperature Coefficient | +0.095 %/°C - quantifies voltage drift per degree Celsius, critical for wide-temperature designs |
| Noise Density | 1 µV/√Hz (typical) - enables use in low-noise analog references and precision instrumentation |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by colored band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to unregulated input; provides stable 36 V reference to load |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTXV qualification | Guarantees screening, testing, and traceability for aerospace and defense deployments |
| Metallurgical bond construction | Ensures mechanical robustness and long-term Zener voltage stability under thermal stress |
| Low noise density (1 µV/√Hz) | Supports precision analog references without requiring external filtering |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift in harsh environmental conditions |
| Radiation hardness (per MicroNote 050) | Enables use in space-grade and nuclear instrumentation without additional shielding |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary supply rails in satellite telemetry modules exposed to thermal cycling from -55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining stable 36 V bias for ADC drivers and op-amp stages. Use Value: JANTXV1N4122C-1's ±2% tolerance and +0.095 %/°C TC ensure <±3% total voltage deviation across full mission temperature range. | Use Scenario: Providing precision reference voltage for missile guidance sensor signal conditioning in hardened ground systems. IC Role / Device Role / Timing Role: Primary Zener reference source for 16-bit SAR ADC front-end calibration circuitry. Use Value: Metallurgical bond and MIL-qualified construction prevent parametric shift after shock/vibration exposure per MIL-STD-810. |
| Avionics Overvoltage Protection | Radiation-Hardened Instrumentation |
Use Scenario: Clamping transient surges on 28 V aircraft bus lines during load dump events. IC Role / Device Role / Timing Role: Fast-response shunt protector diverting excess energy to ground when bus exceeds 36 V threshold. Use Value: 500 mW rating and DO-35 thermal resistance (250 °C/W junction-to-lead) enable reliable single-pulse energy absorption without thermal runaway. | Use Scenario: Biasing photodiode amplifiers in nuclear reactor monitoring sensors exposed to >100 krad(Si) total ionizing dose. IC Role / Device Role / Timing Role: Radiation-tolerant voltage reference ensuring consistent gain calibration over system lifetime. Use Value: Inherent radiation hardness per Microsemi MicroNote 050 eliminates need for derating or redundant referencing schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4122US-1 | Same 36 V Zener voltage and JANTXV qualification, but in surface-mount DO-213AA package | Requires PCB re-layout for SMT assembly; no axial lead handling | Select when board space is constrained and automated placement is required |
| JANTXV1N4122D-1 | Identical electrical specs except ±1% Zener tolerance instead of ±2% | Higher accuracy needed for metrology-grade references; tighter TC matching may be required | Select when absolute voltage accuracy dominates cost and availability considerations |
Compared with JANTXV1N4122C-1, the JANTXV1N4122D-1 offers improved voltage accuracy at the cost of tighter process control, while the 1N4122US-1 preserves reliability and performance in a compact surface-mount form factor-neither is pin-compatible due to differing packages.
Availability
JANTXV1N4122C-1 is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference design, and avionics overvoltage protection requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4122C-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, radiation-hardened, and military-qualified components for aerospace, defense, and industrial markets.
The JANTXV1N4122C-1 belongs to Microsemi's legacy 1N4099–1N4135 family of mil-qualified Zener diodes, designed specifically for precision voltage regulation in mission-critical systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JANTXV1N4122C-1?
JANTXV1N4122C-1 has a nominal Zener voltage of 36 V with a ±2% tolerance, meaning its actual regulation voltage falls between 35.28 V and 36.72 V at 250 mA test current and 25 °C ambient. This tighter tolerance than standard 5% Zeners supports higher-accuracy reference designs in aerospace and defense applications where JANTXV1N4122C-1 is commonly deployed.
Is JANTXV1N4122C-1 RoHS compliant?
No, JANTXV1N4122C-1 is not RoHS compliant. The "e3" suffix denotes RoHS compliance, which is only available on commercial-grade versions of this series-not on JANTXV-qualified parts. JANTXV1N4122C-1 uses traditional tin-lead plating per MIL-STD-750 and maintains full MIL-PRF-19500/435 qualification, making JANTXV1N4122C-1 suitable for legacy and high-reliability programs requiring Pb-based finishes.
What is the maximum reverse leakage current for JANTXV1N4122C-1?
The maximum reverse leakage current for JANTXV1N4122C-1 is 0.01 µA at 28.8 V (80% of nominal Zener voltage), measured at 25 °C. This ultra-low leakage ensures minimal error contribution in high-impedance bias networks and precision reference dividers where JANTXV1N4122C-1 serves as the primary regulation element.
Does JANTXV1N4122C-1 require derating above 25 °C?
Yes, JANTXV1N4122C-1 must be linearly derated above 25 °C ambient: its 500 mW power rating decreases to zero at 175 °C junction temperature. For typical PCB mounting, derating begins at 25 °C, with usable power dropping to ~375 mW at 62.5 °C ambient. Thermal design using JANTXV1N4122C-1 must account for RθJA = 300 °C/W and RθJL = 250 °C/W to avoid exceeding safe operating limits.
How is polarity marked on JANTXV1N4122C-1?
JANTXV1N4122C-1 uses a cathode band (colored stripe) to indicate polarity: the banded end is the cathode and must be connected to the higher-potential side of the circuit during Zener regulation. The opposite (unbanded) end is the anode and connects to ground or lower potential. This marking follows JEDEC DO-35 standards and is verified in Microsemi's T4-LDS-0245-2 datasheet for JANTXV1N4122C-1.
JANTXV1N4122C-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)
JANTXV1N4122C-1 FAQ
1.How can I place an order for JANTXV1N4122C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4122C-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 JANTXV1N4122C-1 reliable?
The price and inventory of JANTXV1N4122C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4122C-1 is usually 5 days.
3.What payment methods are accepted for JANTXV1N4122C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4122C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4122C-1?
JANTXV1N4122C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4122C-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 JANTXV1N4122C-1?
For technical support, including JANTXV1N4122C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4122C-1 requirements.
6.How does Aetrix verify that JANTXV1N4122C-1 is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4122C-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 JANTXV1N4122C-1 meets industry standards.
7.What is the process for return or replacement of JANTXV1N4122C-1?
All JANTXV1N4122C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4122C-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 JANTXV1N4122C-1 part is unused and in its original packaging.
Return procedure for JANTXV1N4122C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4122C-1 Tags
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Diodes Incorporated
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