1N4700

Overview

The Microchip Technology 1N4700 is a 500 mW axial-leaded Zener diode housed in a DO-7 (DO-204AA) glass package. It provides a nominal Zener voltage of 13 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features an internal metallurgical bond. Key electrical parameters include a maximum reverse leakage current of 50 nA at the rated voltage, a test current of 50 µA, and a maximum DC Zener current of 38 mA.

Feature Summary

• Hermetically sealed glass axial-lead construction with internal metallurgical bonding
• Voltage regulation capability across a broad operating current and temperature range
• Inherently radiation hard design suitable for demanding environments
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage reference circuits requiring stable regulation
• Power supply overvoltage protection
• Temperature compensated reference applications

Procurement Notes

Verify the manufacturer origin carefully, as the component history involves transitions between Microsemi and Microchip Technology. Confirm that the specific unit matches the JEDEC registered 1N4700 designation and the DO-7 package outline. Ensure compliance with the required operating temperature range and power dissipation limits for your specific circuit design before finalizing procurement.

Selection Notes

Select this component when a 13 V Zener reference is needed in a through-hole axial configuration. The 500 mW power rating supports moderate current loads. Consider the ±5% tolerance for general regulation tasks. Verify that the DO-7 package dimensions fit the PCB layout constraints and that the lead spacing aligns with the manufacturing requirements.

Part Context

The 1N4700 belongs to the 1N4678 through 1N4717 series of 0.5 W Zener voltage regulators. This series offers a wide selection of voltages from 1.8 V to 43 V in standard 5% tolerances. The devices are characterized by their robust glass axial-leaded DO-7 packages and internal solder bonds, designed for reliability in various electronic applications.

Replacement Considerations

Equivalent parts include other 13 V Zener diodes in the DO-7 or DO-35 packages with matching 500 mW power ratings and ±5% tolerance. Verify pinout compatibility and thermal resistance characteristics when substituting.