JANTX1N4990

Zener Diode Single 220V 5% 550Ohm 5000mW 2-Pin Case E Bag

JANTX1N4990 – 220V 5W Military Zener Diode – Microchip Technology

This JANTX1N4990 Zener diode from Microchip Technology delivers precise voltage regulation for mission-critical applications. Designed to military-grade standards, it ensures exceptional stability at 220V with ±5% tolerance and 5W power dissipation. PCX guarantees authentic Microchip components with same-day shipping and dedicated technical support.

Key Features

• Voltage Regulation: 220V nominal Zener voltage (±5% tolerance)
• High Power Handling: 5W maximum power dissipation
• Military-Grade Reliability: MIL-PRF-19500/356 qualified
• Wide Temperature Range: -65°C to 175°C operating temperature (TJ)
• Low Leakage: 2 µA reverse leakage @ 167V

Technical Specifications

This axial-lead through-hole diode features a dynamic impedance of 550 Ohms (max) and a forward voltage of 1.5V at 1A. Housed in an E-case package, it meets JANTX military specifications for harsh environments. The component is actively manufactured and supplied in bulk packaging.

Typical Applications

• Military/aerospace voltage reference circuits
• Power supply overvoltage protection
• Industrial equipment voltage clamping
• Telecom surge suppression systems
• High-reliability test instrumentation

About Microchip Technology

Microchip Technology is a global leader in semiconductor solutions, renowned for innovation in analog, mixed-signal, and security technologies. With over 30 years of industry expertise, their components power critical infrastructure across aerospace, defense, and industrial sectors.

The company maintains rigorous quality certifications and invests heavily in R&D, ensuring components like the JANTX1N4990 meet stringent military standards. Microchip’s commitment to reliability makes them a preferred partner for engineers designing systems where failure is not an option.

About Zener Diodes

Zener diodes are specialized semiconductor devices engineered to maintain a fixed voltage across their terminals when reverse-biased. This makes them indispensable for voltage regulation, reference circuits, and overvoltage protection in electronic designs.

Unlike standard diodes, Zeners operate in their breakdown region, providing precise voltage control even under varying load conditions. Military-grade variants like this JANTX-series component offer enhanced stability and durability for extreme environments where commercial-grade parts would fail.

Packaging Options

PCX supplies this JANTX1N4990 diode in standard bulk packaging. Contact our support team for custom packaging requirements.

FAQs

Q: Is this diode suitable for high-altitude aerospace applications?
A: Yes, its MIL-PRF-19500/356 qualification ensures performance in extreme conditions including aerospace environments.

Q: What distinguishes JANTX-grade from commercial Zener diodes?
A: JANTX components undergo rigorous military testing for temperature cycling, shock, vibration, and long-term reliability.

Q: Can I use this for 220V AC line protection?
A: While designed for DC regulation, it can clamp transients in AC systems when properly implemented with current-limiting resistors.

Q: Does PCX provide datasheets for this component?
A: Yes, access the full JANTX1N4990 datasheet on our website.

Q: What’s the difference between Zzt and Zzk impedance ratings?
A: Zzt measures impedance at the test current, while Zzk refers to knee impedance – this diode’s Zzt is 550 Ohms max.

Q: How does operating temperature affect Zener voltage accuracy?
A: This diode maintains ±5% tolerance across its full -65°C to 175°C range due to military-grade construction.

Product images are representational. Refer to datasheet for exact dimensions.

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