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Microchip Technology JAN1N4122C-1
- Part No.:
- JAN1N4122C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122C-1.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,933
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Product details
Overview
JAN1N4122C-1 from Microsemi is a 36 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded 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 JAN1N4122C-1 datasheet, JAN1N4122C-1 pinout, JAN1N4122C-1 application, or JAN1N4122C-1 equivalent, key selection factors include its 36 V nominal Zener voltage at 250 mA test current, ±2% voltage tolerance, 200 Ω dynamic impedance at IZT, 0.01 µA maximum reverse leakage at 28.8 V, and -65 °C to +175 °C operating junction temperature range.
Technical Context
This device operates as a precision shunt voltage regulator with a defined breakdown knee at IZK = 250 mA and exhibits low noise density (1 µV/√Hz typical) due to its metallurgical bond construction. Its thermal resistance junction-to-lead is 250 °C/W at 10 mm lead length, enabling stable regulation under transient load conditions in high-temperature environments.
The JAN1N4122C-1 maintains voltage regulation across wide current ranges (IZM = 27.4 mA max) and demonstrates a positive temperature coefficient of +0.095 %/°C - critical for compensating thermal drift in reference circuits requiring long-term stability without external correction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36 V at 250 mA test current - sets precise reference point for regulated output in feedback loops. |
| Zener Tolerance | ±2% - enables tighter output voltage control than standard ±5% variants in mission-critical analog references. |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact through-hole designs with linear derating above 50 °C. |
| Dynamic Impedance ZZT | 200 Ω at IZT - limits output voltage variation under changing load currents in precision supply rails. |
| Reverse Leakage IR | 0.01 µA at 28.8 V - ensures minimal error current in high-impedance bias networks and sensor references. |
| Temp Coefficient αVZ | +0.095 %/°C - provides predictable, monotonic voltage shift for temperature-compensated reference stacking. |
| Noise Density ND | 1 µV/√Hz - supports low-noise analog signal conditioning where reference stability directly impacts SNR. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal during Zener conduction | Connected to lower-potential node (e.g., ground or return path) to enable reverse-biased regulation. |
| Cathode | Regulated voltage output node | Banded end - connects to input rail; delivers stable 36 V reference when reverse-biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for aerospace and defense systems requiring radiation-hardened, high-temperature operation. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in harsh environments. |
| Low noise density (1 µV/√Hz) | Enables use in ultra-low-noise voltage references for precision ADCs, DACs, and instrumentation amplifiers. |
| Hermetic glass sealing | Prevents moisture ingress and parametric drift over decades - critical for unattended or embedded military platforms. |
| Non-ESD-sensitive per MIL-STD-750 | Allows handling without special ESD controls during manual assembly or field repair in ruggedized electronics. |
Applications
| Avionics Power Reference | Satellite DC-DC Feedback |
|---|---|
Use Scenario: Providing stable 36 V reference for voltage-controlled oscillators and telemetry power converters in flight control units. IC Role / Device Role / Timing Role: Shunt voltage reference establishing primary regulation setpoint in isolated flyback secondary-side feedback loop. Use Value: ±2% tolerance and +0.095 %/°C TC ensure <±0.5% total error over -55 °C to +125 °C operational range without calibration. |
Use Scenario: Biasing error amplifiers in radiation-tolerant DC-DC controllers aboard LEO satellites. IC Role / Device Role / Timing Role: Precision Zener reference replacing integrated bandgap in high-dose-rate environments where on-chip references degrade. Use Value: Inherent radiation hardness and hermetic sealing maintain regulation accuracy after 100 krad(Si) total ionizing dose exposure. |
| Tactical Radio RF Stage Bias | Nuclear Instrumentation Calibration |
Use Scenario: Setting gate bias for GaN HEMT drivers in man-portable HF transceivers operating in desert thermal extremes. IC Role / Device Role / Timing Role: Temperature-stable Zener source for programmable current mirrors driving RF power stages. Use Value: 200 Ω dynamic impedance minimizes bias voltage shift during pulsed RF transmission, preserving linearity and efficiency. |
Use Scenario: Calibrating high-voltage pulse generators used in neutron detection systems requiring traceable 36 V reference standards. IC Role / Device Role / Timing Role: Primary voltage standard in metrology-grade calibration fixtures with NIST-traceable uncertainty budgets. Use Value: JAN-level qualification and 0.01 µA leakage at 80% VZ support sub-ppm measurement repeatability over 10-year intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4122US-1 | Same 36 V Zener voltage and ±2% tolerance, but in surface-mount DO-213AA package. | Requires PCB rework for SMT assembly; lacks axial-leaded mechanical robustness for vibration-prone chassis mounts. | Select when board space is constrained and automated placement is required; verify thermal pad layout matches RθJL spec. |
| JANTXV1N4122C | Identical electrical specs and DO-35 package, but qualified to JANTXV level (enhanced screening, 100% lot testing). | Required for programs demanding extended burn-in, life test, and radiation assurance beyond JAN baseline. | Choose for flight-critical subsystems where failure mode analysis mandates higher screen severity and lot traceability. |
Compared with JAN1N4122C-1, the 1N4122US-1 offers footprint reduction at the cost of mechanical mounting flexibility, while JANTXV1N4122C adds qualification rigor without altering electrical behavior - enabling direct substitution only when program requirements explicitly mandate JANTXV screening.
Availability
JAN1N4122C-1 is available at Aetrix Electronics and suitable for avionics power references, satellite DC-DC feedback circuits, and tactical radio RF stage biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4122C-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 JAN1N4122C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance of JAN1N4122C-1?
JAN1N4122C-1 has a nominal Zener voltage of 36 V with a ±2% tolerance, meaning its actual breakdown voltage falls between 35.28 V and 36.72 V when measured at 250 mA test current and 25 °C ambient. This tighter tolerance versus standard ±5% variants supports higher-accuracy regulation in precision analog circuits where reference drift must be minimized.
Is JAN1N4122C-1 suitable for high-temperature operation?
Yes, JAN1N4122C-1 is rated for junction temperatures from -65 °C to +175 °C and features a thermal resistance junction-to-lead of 250 °C/W. Its metallurgical bond construction and hermetic glass package ensure stable Zener voltage and low leakage up to maximum rated temperature, making it appropriate for engine-mounted avionics and downhole oilfield electronics.
Does JAN1N4122C-1 require special ESD handling?
No, JAN1N4122C-1 is non-sensitive to ESD per MIL-STD-750 Method 1020 and does not require static-control packaging or handling procedures during assembly. This simplifies integration into field-repairable military radios and ruggedized test equipment where ESD infrastructure may be unavailable.
What is the maximum Zener current IZM for JAN1N4122C-1?
The maximum Zener current IZM for JAN1N4122C-1 is 27.4 mA at 25 °C ambient, derived from its 500 mW power rating and 36 V Zener voltage. Above 50 °C lead temperature, power must be linearly derated to zero at 175 °C - a critical constraint when designing for sustained high-current regulation in enclosed enclosures.
How does the temperature coefficient affect JAN1N4122C-1 performance?
JAN1N4122C-1 has a temperature coefficient αVZ of +0.095 %/°C, meaning its Zener voltage increases by approximately 34.2 mV per °C rise in junction temperature. This predictable positive drift allows designers to compensate reference circuits using complementary negative-TC components or software calibration algorithms in temperature-variable environments.
JAN1N4122C-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:
- -
- 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)
JAN1N4122C-1 FAQ
1.How can I place an order for JAN1N4122C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122C-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 JAN1N4122C-1 reliable?
The price and inventory of JAN1N4122C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4122C-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4122C-1?
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4.How is shipping managed for JAN1N4122C-1?
JAN1N4122C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122C-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 JAN1N4122C-1?
For technical support, including JAN1N4122C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122C-1 requirements.
6.How does Aetrix verify that JAN1N4122C-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4122C-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 JAN1N4122C-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4122C-1?
All JAN1N4122C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122C-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 JAN1N4122C-1 part is unused and in its original packaging.
Return procedure for JAN1N4122C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4122C-1 Tags
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