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Microchip Technology JAN1N4122D-1
- Part No.:
- JAN1N4122D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122D-1.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,163
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Product details
Overview
JAN1N4122D-1 from Microsemi is a 500 mW, 36 V, 1% tolerance Zener diode in DO-35 glass package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4122D-1 datasheet, JAN1N4122D-1 pinout, JAN1N4122D-1 application, or JAN1N4122D-1 equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (200 Ω at 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.095 %/°C), and hermetic DO-35 packaging for radiation-hardened environments.
Technical Context
This device operates as a precision shunt voltage regulator with metallurgically bonded construction ensuring stable breakdown characteristics across -65 °C to +175 °C. Its low noise density (1 µV/√Hz) and tight 1% Zener voltage tolerance make it suitable for reference circuits requiring minimal drift under thermal and current variation.
The JAN1N4122D-1 exhibits a positive temperature coefficient of +0.095 %/°C and maintains regulated output at test current IZT = 250 mA, with maximum Zener impedance ZZT = 200 Ω and reverse leakage IR ≤ 0.01 µA at VR = 27.4 V - confirming stable regulation well below nominal voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 36.0 V ±1% at IZT = 250 mA - ensures precise reference voltage with minimal calibration burden in analog power monitoring. |
| Power Dissipation | 500 mW at TC = 25 °C - supports continuous regulation in compact, convection-cooled military PCB layouts. |
| Dynamic Impedance ZZT | 200 Ω max at IZT = 250 mA - limits output voltage shift under load transients in feedback-sensing applications. |
| Noise Density ND | 1 µV/√Hz - enables use in low-noise voltage references for precision ADC biasing and sensor excitation. |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift allows compensation in wide-temperature-range avionics regulators. |
| Reverse Leakage IR | ≤ 0.01 µA at VR = 27.4 V - guarantees negligible standby current in always-on fault-monitoring circuits. |
| Junction Temp Range | -65 °C to +175 °C - validated for operation in missile guidance electronics and satellite power subsystems. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed body, tin-lead plating, cathode indicated by band. Operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for regulation. |
| Cathode | Zener output terminal | Provides regulated 36 V output when reverse-biased; marked by color band on glass body. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term stability in space-grade assemblies. |
| JANS qualification per MIL-PRF-19500/435 | Validated for Class S (space) and Class H (high reliability) applications with full lot traceability and screening. |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in critical voltage reference chains used in flight control systems. |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for low-earth orbit missions. |
| Low capacitance | Typical <2 pF - preserves high-frequency response in RF detector bias networks and fast-switching protection circuits. |
Applications
| Aerospace Power Reference | Defense System Voltage Monitor |
|---|---|
Use Scenario: Providing stable 36 V reference for analog-to-digital conversion in satellite telemetry power conditioning units. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision DC reference for ADC input scaling and sensor signal conditioning. Use Value: 1% tolerance and +0.095 %/°C tempco enable single-point calibration over -55 °C to +125 °C operating range without software correction. | Use Scenario: Monitoring 42 V vehicle bus voltage in armored vehicle electronic control units during engine cranking transients. IC Role / Device Role / Timing Role: Zener clamp protecting microcontroller supply rails from overvoltage spikes exceeding 36 V threshold. Use Value: Hermetic DO-35 package withstands shock/vibration; 0.01 µA leakage prevents false triggering in low-power wake-up circuitry. |
| Nuclear Instrumentation Bias Supply | Missile Guidance Sensor Excitation |
Use Scenario: Generating ultra-low-noise bias for photomultiplier tube anode chains in radiation detection field instruments. IC Role / Device Role / Timing Role: Low-noise Zener reference source delivering clean 36 V to high-gain analog front-end amplifiers. Use Value: 1 µV/√Hz noise density minimizes baseline drift in pulse-height analysis, directly improving energy resolution. | Use Scenario: Supplying regulated excitation voltage to MEMS gyroscope bridges in inertial measurement units exposed to 100 krad(Si) TID. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining stable bridge bias despite cumulative ionizing dose exposure. Use Value: Inherent radiation hardness eliminates need for shielding or derating, reducing SWaP-C in guided munition seekers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4122D-1 | Same electrical specs but qualified to JANTXV level (not JANS); lower screening rigor and no Class S radiation testing. | Suitable for ground-based radar systems where full space qualification is unnecessary. | Select when cost sensitivity outweighs requirement for full JANS-level radiation assurance. |
| 1N4122UR-1 | Same 36 V/1% spec in DO-213AA surface-mount package; lacks JANS qualification and has higher thermal resistance (RθJA = 400 °C/W). | Used in high-density commercial avionics where board space is constrained but radiation hardness is not required. | Choose only for non-mission-critical SMT designs needing identical regulation performance without hermetic axial leads. |
Compared with JAN1N4122D-1, JANTXV1N4122D-1 offers identical regulation performance at lower cost but reduced radiation assurance, while 1N4122UR-1 enables SMT assembly at the expense of thermal performance and reliability screening - making JAN1N4122D-1 the sole choice for Class S space applications demanding hermeticity, low noise, and proven TID hardness.
Availability
JAN1N4122D-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system voltage monitors, nuclear instrumentation bias supplies, and missile guidance sensor excitation requiring stable component supply under extended lead times and strict traceability.
Supply support for JAN1N4122D-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 JAN1N4122D-1 belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, designed specifically for precision voltage regulation in mission-critical systems where radiation hardness, hermetic sealing, and long-term parametric stability are mandatory.
FAQ
What is the Zener voltage tolerance of JAN1N4122D-1?
JAN1N4122D-1 has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This tight tolerance is achieved through post-process binning and is specified at IZT = 250 mA and 25 °C ambient. The 36.0 V nominal Zener voltage remains within 35.64 V to 36.36 V across its qualified operating temperature range, enabling high-accuracy reference design without external trimming.
Is JAN1N4122D-1 suitable for space applications?
Yes, JAN1N4122D-1 is qualified to JANS level per MIL-PRF-19500/435 and is inherently radiation-hardened per Microsemi MicroNote 050. It is approved for Class S (space) applications with full lot traceability, burn-in, and radiation testing. Its hermetic DO-35 package and metallurgical bond construction ensure reliability under thermal cycling and total ionizing dose exposure typical in low-earth orbit missions.
What is the maximum reverse leakage current for JAN1N4122D-1?
The maximum reverse leakage current (IR) for JAN1N4122D-1 is 0.01 µA at VR = 27.4 V, as specified in the Electrical Characteristics table. This ultra-low leakage ensures minimal parasitic loading in high-impedance reference nodes and supports reliable operation in battery-backed monitoring circuits where standby current must remain below 100 nA.
Does JAN1N4122D-1 have a specified noise density?
Yes, JAN1N4122D-1 has a maximum noise density of 1 µV/√Hz, measured at IZT = 250 mA using a 1 kHz–3 kHz bandpass filter. This value is consistent with the "6.8 V and up" group in the FEATURES section, where noise falls rapidly to 1 µV/√Hz at lower voltages - confirming suitability for low-noise analog references in precision instrumentation.
What package type does JAN1N4122D-1 use?
JAN1N4122D-1 uses the DO-35 (DO-204AH) axial-leaded, hermetically sealed glass package. Dimensions comply with JEDEC standards: body diameter 1.42–2.29 mm, body length 3.56–5.08 mm, and lead length 25.4–38.1 mm. The cathode is marked by a visible band, and terminals are tin-lead plated for solderability per MIL-STD-750 Method 2026.
JAN1N4122D-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:
- ±1%
- 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)
JAN1N4122D-1 FAQ
1.How can I place an order for JAN1N4122D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122D-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 JAN1N4122D-1 reliable?
The price and inventory of JAN1N4122D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4122D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4122D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4122D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4122D-1?
JAN1N4122D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122D-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 JAN1N4122D-1?
For technical support, including JAN1N4122D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122D-1 requirements.
6.How does Aetrix verify that JAN1N4122D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4122D-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 JAN1N4122D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4122D-1?
All JAN1N4122D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122D-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 JAN1N4122D-1 part is unused and in its original packaging.
Return procedure for JAN1N4122D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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