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Microchip Technology JANS1N4614-1
- Part No.:
- JANS1N4614-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4614-1.pdf
- Description:
- DIODE ZENER 1.8V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:156
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Product details
Overview
JANS1N4614-1 from Microsemi is a 1.8 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers ±5% Zener voltage tolerance at 250 mA test current, 1200 Ω dynamic impedance, and -0.075 %/°C temperature coefficient.
For engineers reviewing the JANS1N4614-1 datasheet, JANS1N4614-1 pinout, JANS1N4614-1 application, or JANS1N4614-1 equivalent, key selection criteria include military-grade reliability qualification, low-noise regulation (1 µV/√Hz), axial-leaded DO-35 mechanical robustness, and thermal derating behavior from 500 mW at 25 °C to zero at 175 °C.
Technical Context
The JANS1N4614-1 operates as a precision voltage reference in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures stable junction characteristics under thermal cycling and radiation exposure.
It exhibits a nominal Zener voltage of 1.8 V at 250 mA, with maximum reverse leakage of 3.5 µA at 1.0 V and dynamic impedance of 1200 Ω measured at 10% AC modulation of IZT - critical for low-noise analog reference and biasing circuits in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 1.8 V at 250 mA - sets precise low-voltage reference point for analog circuit biasing |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, convection-cooled designs |
| Zener Impedance ZZT | 1200 Ω - indicates moderate regulation stiffness; suitable for non-critical reference loads |
| Temp Coefficient αVZ | -0.075 %/°C - enables predictable drift compensation in wide-temperature-range systems |
| Noise Density ND | 1 µV/√Hz - ultra-low noise performance essential for precision instrumentation references |
| Reverse Leakage IR | 3.5 µA at 1.0 V - ensures minimal quiescent current draw in standby or low-power modes |
| Max Junction Temp | +175 °C - enables deployment in high-temperature avionics and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by single black band; tin-lead or RoHS-compliant matte-tin plating; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lowest potential node when used in shunt regulation |
| Cathode (banded end) | Zener breakdown terminal / regulated output node | Supplies stable 1.8 V reference voltage; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets highest reliability screening for spaceflight, missile guidance, and nuclear command systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution ADC references and low-phase-noise oscillator bias networks |
| Hermetic glass DO-35 package | Provides long-term moisture and contaminant immunity without conformal coating |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in flight control computers using resistive divider + comparator. IC Role / Device Role / Timing Role: Zener reference for comparator threshold setting. Use Value: Stable 1.8 V reference enables accurate trip-point detection across -65 °C to +175 °C operating range. | Use Scenario: Providing bias voltage to radiation-hardened op-amps in star tracker focal plane arrays. IC Role / Device Role / Timing Role: Low-noise analog reference for signal conditioning front-end. Use Value: 1 µV/√Hz noise density prevents degradation of sub-millivolt sensor signals in deep-space missions. |
| Nuclear Command Interface | Tactical Radio RF Stage Bias |
Use Scenario: Level-shifting logic signals between radiation-hardened microcontrollers and legacy TTL peripherals. IC Role / Device Role / Timing Role: Shunt regulator establishing clean 1.8 V logic reference rail. Use Value: JANS qualification ensures uninterrupted operation during neutron/gamma exposure events. | Use Scenario: Setting gate bias for GaN power amplifiers in manpack radios operating in desert environments. IC Role / Device Role / Timing Role: Temperature-stable voltage reference for amplifier quiescent current control. Use Value: -0.075 %/°C tempco minimizes RF output drift over -40 °C to +85 °C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4614-1 | Same electrical specs; qualified to JANTXV level (lower screening rigor than JANS) | Approved for high-reliability industrial and ground-based defense systems, not spaceflight | Select when full JANS radiation and thermal cycling requirements are not mandated |
| 1N4614UR-1 | Same Zener parameters; DO-213AA surface-mount package instead of DO-35 axial | Used in automated SMT assembly lines; lacks JANS qualification; RoHS-compliant only | Choose for volume production PCBs where manual axial insertion is impractical |
Compared with JANS1N4614-1, JANTXV1N4614-1 offers identical regulation performance with reduced qualification cost and lead time, while 1N4614UR-1 trades military reliability for SMT manufacturability and RoHS compliance - neither is pin-compatible due to differing packages and qualification scope.
Availability
JANS1N4614-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and nuclear command interface applications requiring stable component supply with guaranteed long-term obsolescence management.
Supply support for JANS1N4614-1 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 JANS1N4614-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for voltage regulation in mission-critical systems where radiation tolerance, thermal stability, and hermetic integrity are mandatory.
FAQ
What is the Zener voltage tolerance for JANS1N4614-1?
JANS1N4614-1 has a nominal Zener voltage of 1.8 V with ±5% tolerance at 250 mA test current, consistent with JEDEC standard for the 1N4614–1N4627 series. This tolerance applies under thermal equilibrium conditions at 25 °C ambient, and is verified per MIL-PRF-19500/435 screening requirements for JANS-level devices.
Is JANS1N4614-1 RoHS compliant?
No, JANS1N4614-1 is not RoHS compliant. RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants per the datasheet. The JANS-level qualification requires tin-lead plating for solderability and reliability validation under MIL-STD-750 method 2026, which is incompatible with RoHS restrictions.
What is the maximum operating temperature for JANS1N4614-1?
JANS1N4614-1 supports junction and storage temperatures from -65 °C to +175 °C. Its power dissipation linearly derates from 500 mW at 25 °C to zero at 175 °C, enabling reliable operation in extreme environments such as jet engine bays or spacecraft thermal vacuum chambers.
How is polarity marked on JANS1N4614-1?
JANS1N4614-1 uses a single black cathode band on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the anode for proper Zener regulation. This marking conforms to industry-standard DO-35 axial-leaded diode conventions and is verified per MIL-PRF-19500/435 visual inspection requirements.
Does JANS1N4614-1 require heatsinking in typical applications?
JANS1N4614-1 does not require external heatsinking in most applications due to its 500 mW rating and DO-35 package thermal resistance of 250 °C/W junction-to-lead (with 3/8″ lead length). However, sustained operation above 50 °C ambient requires linear derating per Figure 2 in the datasheet, and board-level copper area should follow Microsemi's recommended 4 mm² pad layout for optimal thermal performance.
JANS1N4614-1 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):
- 1.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1 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)
JANS1N4614-1 FAQ
1.How can I place an order for JANS1N4614-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4614-1 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 JANS1N4614-1 reliable?
The price and inventory of JANS1N4614-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4614-1 is usually 5 days.
3.What payment methods are accepted for JANS1N4614-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4614-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4614-1?
JANS1N4614-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4614-1 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 JANS1N4614-1?
For technical support, including JANS1N4614-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4614-1 requirements.
6.How does Aetrix verify that JANS1N4614-1 is sourced from the original manufacturer or authorized distributors?
All JANS1N4614-1 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 JANS1N4614-1 meets industry standards.
7.What is the process for return or replacement of JANS1N4614-1?
All JANS1N4614-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4614-1, 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 JANS1N4614-1 part is unused and in its original packaging.
Return procedure for JANS1N4614-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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