1N4000A

Single Zener Diodes Overview

The Microchip Technology 1N4000A is a high-power 10 W Zener diode with a nominal voltage of 7.5 V and ±5% tolerance. It operates within a junction temperature range of -65°C to +175°C and features a DC power dissipation rating of 10 Watts. The device utilizes internal solder bond construction and is hermetically sealed in a DO-4 (DO-203AA) package with a 7/16” hex stud. Standard polarity connects the cathode to the case, while reverse polarity is available via an 'R' suffix.

Single Zener Diodes Feature Summary

• Hermetically sealed welded metal and glass construction for durability
• Internal solder bond design ensuring robust mechanical integrity
• Inherently radiation hard per Microsemi MicroNote 050
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-power applications requiring adequate mounting and heat sinking
• Military and aerospace systems utilizing JAN, JANTX, or JANTXV qualifications

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix to confirm voltage tolerance and polarity configuration. The standard 1N4000A designation indicates a ±5% tolerance with cathode-to-stud polarity. Reverse polarity variants require the 'R' suffix. Confirm thermal management requirements, as the device supports up to 10 W dissipation only with appropriate heat sinking. Ensure compatibility with the DO-4 stud mount interface.

Single Zener Diodes Selection Notes

Select this component when a 7.5 V reference with tight ±5% tolerance is required in a ruggedized environment. The DO-4 stud mount facilitates direct chassis grounding and efficient heat transfer. Consider the negative temperature coefficient at lower voltages. Verify that the application can accommodate the physical dimensions and weight of the hermetically sealed metal package.

Single Zener Diodes Part Context

This part belongs to the 1N3993 through 1N4000A series of 10 Watt Zener diodes manufactured by Microsemi's Scottsdale Division. These devices are JEDEC registered and designed for high-power regulation tasks. The series spans a wide voltage range from 3.9 V to 200 V, offering various tolerance options including B (±5%), A (±10%), and unmarked (±20%) suffixes.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 10 W Zener diodes in the DO-4 package with matching 7.5 V specifications. Verify that substitute components meet the same hermetic sealing and radiation hardness requirements if used in military or aerospace contexts.