1N4704/TR

Overview

The Microchip Technology 1N4704/TR is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 17 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to 200 °C. It utilizes the DO-7 (DO-204AA) through-hole package, measuring 7.62 mm in length and 2.718 mm in diameter. The component exhibits a reverse leakage current of 50 nA at 12.9 V and a test current of 50 µA.

Feature Summary

• Hermetically sealed glass construction for environmental stability
• Low operating current characteristics suitable for precision circuits
• Unidirectional voltage regulation capability

Applications

• Voltage reference circuits
• Overvoltage protection
• General purpose voltage regulation

Procurement Notes

Verify the specific manufacturer source, as the 1N4704 designation is utilized by multiple vendors including Motorola/NXP, Central Semiconductor, and Microchip. Ensure the suffix /TR indicates tape and reel packaging if required. Confirm the package type matches the DO-7 specification rather than DO-35 or DO-204AH variants found in other datasheets. Cross-reference electrical parameters such as leakage current and tolerance against the specific supplier's documentation to ensure compliance with design requirements.

Selection Notes

Select this component when a 17 V Zener voltage with 500 mW power rating is required in a through-hole configuration. The DO-7 package offers a smaller footprint compared to conventional DO-204AA packages. Consider the low leakage current of 50 nA for sensitive analog applications. Verify that the ±5% tolerance aligns with the circuit's voltage regulation accuracy needs. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

The 1N4704 series comprises low-power Zener diodes ranging from 1.8 V to 200 V. These devices are commonly used in consumer electronics and industrial equipment for basic voltage clamping and reference tasks. The 1N4704 specifically targets the 17 V segment of this range. While originally associated with Motorola, Microchip Technology produces this part under the same JEDEC numbering system, maintaining compatibility with legacy designs.

Replacement Considerations

• CDLL4704/TR

FAQ

What is the package type for the 1N4704/TR?

The 1N4704/TR uses the DO-7 (also known as DO-204AA) through-hole axial leaded package.

What is the reverse leakage current specification?

The reverse leakage current is specified as 50 nA at a reverse voltage of 12.9 V.