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Microchip Technology JAN1N4122-1
- Part No.:
- JAN1N4122-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4122-1.pdf
- Description:
- DIODE ZENER 36V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,427
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Product details
Overview
JAN1N4122-1 from Microsemi is a 500 mW, 36 V metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JAN level per MIL-PRF-19500/435, with ±5% voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and 0.01 µA maximum reverse leakage at 27.4 V. It regulates voltage in precision reference and power supply feedback circuits across military-grade temperature ranges.
For engineers reviewing the JAN1N4122-1 datasheet, JAN1N4122-1 pinout, JAN1N4122-1 application, or JAN1N4122-1 equivalent, key selection criteria include Zener voltage stability over -65°C to +175°C, low noise density (≤1 µV/√Hz below 6.8 V), hermetic glass packaging, and MIL-qualified reliability for aerospace and defense systems.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 36 V at 250 mA test current (IZT), exhibiting a positive temperature coefficient of +0.095 %/°C. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
The JAN1N4122-1 delivers 11.0 mA maximum Zener current (IZM) at rated power, with dynamic impedance (ZZT) of 200 Ω measured at 10% AC modulation of IZT. Reverse leakage (IR) is limited to 0.01 µA at VR = 27.4 V, supporting low-power biasing in high-impedance sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V at 250 mA - defines precise regulation point for feedback loops and reference generation |
| Power Dissipation | 500 mW at 25°C - supports stable operation in compact, unheatsinked designs |
| Dynamic Impedance (ZZT) | 200 Ω at IZT - determines output voltage variation under load transients |
| Reverse Leakage (IR) | 0.01 µA at 27.4 V - enables use in ultra-low-current bias networks without loading error |
| Temp Coefficient (αVZ) | +0.095 %/°C - quantifies voltage drift over military temperature range (-65°C to +175°C) |
| Junction Temp Range | -65°C to +175°C - ensures functionality in extreme environmental conditions |
| Noise Density (ND) | ≤1 µV/√Hz - critical for low-noise analog references and sensor excitation |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive relative to anode 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 system ground or lower-potential rail; establishes return path for Zener current |
| Cathode | Regulated output node | Banded end; supplies stable 36 V reference when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 Qualified (JAN) | Meets stringent screening, testing, and traceability requirements for defense electronics |
| Metallurgical Bond Construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Hermetic Glass Encapsulation | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Radiation Hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Low Capacitance | Typical <2 pF - minimizes high-frequency loading in RF bias and timing circuits |
Applications
| Aerospace Power Monitoring | Defense System Reference |
|---|---|
Use Scenario: Voltage monitoring circuit in satellite power distribution unit detecting overvoltage on 28 V bus. IC Role / Device Role / Timing Role: Zener reference providing stable 36 V clamp threshold for comparator input. Use Value: Ensures accurate trip point across -65°C to +175°C operational range without calibration drift. | Use Scenario: Precision reference in missile guidance inertial measurement unit (IMU) analog front-end. IC Role / Device Role / Timing Role: Stable 36 V reference for ADC biasing and sensor excitation. Use Value: Low noise density (<1 µV/√Hz) prevents signal corruption in microvolt-level sensor outputs. |
| Avionics Voltage Regulation | Tactical Radio Bias Network |
Use Scenario: Feedback element in isolated DC-DC converter regulating 36 V auxiliary rail for flight control computers. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining output accuracy under variable load and temperature. Use Value: ±5% tolerance and +0.095 %/°C TC enable single-point calibration across full mission profile. | Use Scenario: Bias voltage source for RF power amplifier stages in handheld tactical radios. IC Role / Device Role / Timing Role: Low-capacitance (≈1.5 pF) Zener providing clean 36 V bias without RF coupling. Use Value: Hermetic DO-35 package withstands mechanical shock and humidity in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4122US | Same 36 V Zener voltage, but in surface-mount DO-213AA package; no MIL qualification | Lacks JAN-level screening and radiation hardness; suitable only for commercial avionics subsystems | Select when board space constraints require SMT and MIL-spec is not mandated |
| JANTXV1N4122 | Identical electrical specs and DO-35 package, but qualified to JANTXV level with enhanced screening and lot traceability | Required for flight-critical systems where extended burn-in and parametric stability are mandatory | Select when higher reliability assurance and longer qualification life are required beyond JAN level |
Compared with JAN1N4122-1, 1N4122US offers footprint reduction but sacrifices military qualification and radiation tolerance, while JANTXV1N4122 provides superior process control and longevity at higher cost-enabling tiered sourcing for non-critical vs. flight-critical subsystems.
Availability
JAN1N4122-1 is available at Aetrix Electronics and suitable for aerospace power monitoring, defense system reference, and avionics voltage regulation requiring stable component supply with full MIL-PRF-19500 traceability and long-term obsolescence management.
Supply support for JAN1N4122-1 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, emphasizing radiation-hardened and MIL-qualified components.
The JAN1N4122-1 belongs to Microsemi's legacy 1N4099–1N4135 family of metallurgically bonded Zener diodes, engineered specifically for precision voltage regulation in mission-critical systems operating across extreme temperatures and radiation environments.
FAQ
What is the Zener voltage tolerance for JAN1N4122-1?
JAN1N4122-1 has a nominal Zener voltage of 36 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25°C with 250 mA test current.
Is JAN1N4122-1 RoHS compliant?
No, JAN1N4122-1 is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix denotes RoHS compliance, which is available only on commercial-grade versions-not JAN-level devices. JAN1N4122-1 uses traditional tin-lead plating per MIL-STD-750.
What is the maximum Zener current (IZM) for JAN1N4122-1?
The maximum Zener current (IZM) for JAN1N4122-1 is 11.0 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device dissipates its rated 500 mW at 36 V, assuming ideal thermal conditions.
Does JAN1N4122-1 have radiation hardness certification?
Yes, JAN1N4122-1 is inherently radiation hard as documented in Microsemi MicroNote 050, referenced in the Applications/Benefits section on page 1 of T4-LDS-0245-2 Rev. 1. Its metallurgically bonded glass construction contributes to total ionizing dose (TID) resilience without requiring additional qualification testing.
What is the thermal resistance junction-to-lead (RθJL) for JAN1N4122-1?
The thermal resistance junction-to-lead (RθJL) for JAN1N4122-1 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the body, as stated in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value supports thermal modeling for lead-mounted PCB layouts.
JAN1N4122-1 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:
- ±5%
- 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)
JAN1N4122-1 FAQ
1.How can I place an order for JAN1N4122-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4122-1 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 JAN1N4122-1 reliable?
The price and inventory of JAN1N4122-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4122-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4122-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4122-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4122-1?
JAN1N4122-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4122-1 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 JAN1N4122-1?
For technical support, including JAN1N4122-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4122-1 requirements.
6.How does Aetrix verify that JAN1N4122-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4122-1 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 JAN1N4122-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4122-1?
All JAN1N4122-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4122-1, 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 JAN1N4122-1 part is unused and in its original packaging.
Return procedure for JAN1N4122-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4122-1 Tags
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