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Microchip Technology JAN1N4120-1/TR
- Part No.:
- JAN1N4120-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4120-1/TR.pdf
- Description:
- DIODE ZENER 30V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,829
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Product details
Overview
JAN1N4120-1/TR from Microsemi is a 30.0 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) 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 22.8 V. It serves as a precision voltage reference in military-grade power regulation circuits.
For engineers reviewing the JAN1N4120-1/TR datasheet, JAN1N4120-1/TR pinout, JAN1N4120-1/TR application, or JAN1N4120-1/TR equivalent, key selection criteria include its MIL-qualified reliability, low noise density (≤1 µV/√Hz below 6.8 V), thermal resistance of 250 °C/W (junction-to-lead), and operation across –65 °C to +175 °C junction temperature range.
Technical Context
This Zener diode operates in reverse breakdown with cathode band indicating polarity, requiring banded end to be positive for regulation. Its metallurgically bonded construction ensures stable voltage regulation over wide current (250 mA IZT) and temperature ranges, with minimal capacitance and inherent radiation hardness per MicroNote 050.
The device exhibits a +0.095 %/°C temperature coefficient and supports linear power derating from 500 mW at 25 °C to zero at 175 °C. It is RoHS-compliant only in commercial versions; JAN-level units use tin-lead plating and are non-RoHS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30.0 V at 250 mA test current - defines nominal regulation point under standard bias |
| Power Dissipation PM(AV) | 0.5 W at 25 °C lead temperature - sets maximum continuous DC power handling |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - determines output voltage stability under load current variation |
| Reverse Leakage IR | 0.01 µA at 22.8 V - ensures minimal standby current in high-impedance reference nodes |
| Temp Coefficient αVZ | +0.095 %/°C - quantifies voltage drift with ambient temperature change |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in extreme environmental conditions |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise analog references and precision instrumentation |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by color band; terminals are tin-lead plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded lead | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | JAN-level reliability certified for aerospace and defense systems with full traceability |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical stress |
| Low noise density | ≤1 µV/√Hz enables use in precision analog front-ends without added filtering |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 |
Applications
| Avionics Power Reference | Spacecraft Sensor Biasing |
|---|---|
Use Scenario: Providing stable 30 V reference for ADC biasing and op-amp offset trimming in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference element in analog signal conditioning chain. Use Value: Maintains <±0.5% regulation accuracy over –55 °C to +125 °C operating range with <1 µV/√Hz noise floor. |
Use Scenario: Supplying calibrated bias voltage to radiation-hardened CMOS image sensor arrays on LEO satellites. IC Role / Device Role / Timing Role: Radiation-tolerant Zener reference for analog pixel readout circuitry. Use Value: Delivers stable 30 V output under 100 krad(Si) TID exposure without parameter shift beyond spec limits. |
| Military Radio RF Stage Bias | Nuclear Instrumentation Calibration |
Use Scenario: Setting gate bias for GaN HEMT amplifiers in tactical HF/VHF transceivers operating in mobile platforms. IC Role / Device Role / Timing Role: High-stability DC bias source for RF power amplifier stages. Use Value: Sustains regulation within ±5% despite vibration, shock, and rapid ambient temperature swings up to 10 °C/min. |
Use Scenario: Calibrating high-voltage pulse amplitude in neutron detection scintillation modules used in reactor monitoring. IC Role / Device Role / Timing Role: Primary reference in 30 V calibration subsystem for photomultiplier tube HV supplies. Use Value: Guarantees <0.1% long-term voltage drift over 10-year field life due to hermetic packaging and metallurgical bonding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4120US | Same 30 V Zener voltage, DO-213AA surface-mount package, JANTXV qualification, 2% tolerance option available | Requires PCB re-layout for SMT assembly; suited for compact, high-density boards where axial leads are impractical | Select when space-constrained designs demand surface-mount compatibility without sacrificing MIL-qualification |
| JAN1N4120-1 | Identical electrical specs and JAN qualification, but supplied in bulk (non-tape-and-reel) packaging | Used in manual assembly or low-volume prototyping; lacks TR tape/reel convenience for automated pick-and-place | Select for engineering validation, repair spares, or small-batch production where reel logistics are unnecessary |
Compared with JAN1N4120-1/TR, 1N4120US offers SMT compatibility at the cost of board redesign, while JAN1N4120-1 provides identical performance in non-reel form-enabling flexible sourcing across prototyping, qualification, and volume production phases.
Availability
JAN1N4120-1/TR is available at Aetrix Electronics and suitable for avionics power reference, spacecraft sensor biasing, and military radio RF stage bias applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JAN1N4120-1/TR 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 aerospace-grade components.
The JAN1N4120-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for mission-critical voltage regulation in defense, space, and nuclear instrumentation systems.
FAQ
What is the Zener voltage tolerance for JAN1N4120-1/TR?
JAN1N4120-1/TR has a nominal Zener voltage of 30.0 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This tolerance applies under standard test conditions at 25 °C with 250 mA Zener test current. The JAN1N4120-1/TR does not offer tighter tolerances like 2% or 1%-those are available only in other variants such as C- or D-suffixed commercial parts.
Is JAN1N4120-1/TR RoHS compliant?
No, JAN1N4120-1/TR is not RoHS compliant. Per the datasheet, RoHS compliance (e3 suffix) is available only for commercial-grade versions; JAN-level devices like JAN1N4120-1/TR use tin-lead plating and are exempt from RoHS requirements to maintain MIL-PRF-19500/435 qualification integrity. The JAN1N4120-1/TR meets MIL-STD-750 solderability requirements using traditional Pb/Sn terminations.
What is the maximum reverse leakage current for JAN1N4120-1/TR?
The maximum reverse leakage current (IR) for JAN1N4120-1/TR is 0.01 µA at VR = 22.8 V, as specified in the Electrical Characteristics table on page 3. This value reflects worst-case leakage under rated reverse voltage and is measured at 25 °C ambient. The JAN1N4120-1/TR maintains this ultra-low leakage across its full operating temperature range due to hermetic glass packaging and metallurgical bonding.
Can JAN1N4120-1/TR be used in surface-mount designs?
No, JAN1N4120-1/TR is packaged in axial-leaded DO-35 (DO-204AH) glass and is not suitable for direct surface-mount assembly. For SMT-compatible alternatives, consider 1N4120US in DO-213AA package-same 30 V Zener voltage and JANTXV qualification-but JAN1N4120-1/TR requires through-hole mounting with 3/8″ lead length for thermal management per RθJL = 250 °C/W specification.
What is the temperature coefficient of JAN1N4120-1/TR?
The temperature coefficient (αVZ) of JAN1N4120-1/TR is +0.095 %/°C, meaning its Zener voltage increases by approximately 28.5 mV per 1 °C rise in junction temperature. This value is confirmed in the Electrical Characteristics table and applies across the full –65 °C to +175 °C junction temperature range. The positive coefficient makes JAN1N4120-1/TR suitable for applications where predictable, monotonic voltage drift is acceptable or compensatable.
JAN1N4120-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 22.8 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)
JAN1N4120-1/TR FAQ
1.How can I place an order for JAN1N4120-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4120-1/TR 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 JAN1N4120-1/TR reliable?
The price and inventory of JAN1N4120-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4120-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4120-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4120-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4120-1/TR?
JAN1N4120-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4120-1/TR 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 JAN1N4120-1/TR?
For technical support, including JAN1N4120-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4120-1/TR requirements.
6.How does Aetrix verify that JAN1N4120-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4120-1/TR 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 JAN1N4120-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4120-1/TR?
All JAN1N4120-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4120-1/TR, 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 JAN1N4120-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4120-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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