USR931

The USR931 is a 9.3 volt ultra stable temperature compensated zener reference diodes.This series of Microsemi 400mW ultra-stable reference diodes offers a CERTIFIED REFERENCE VOLTAGE STABILITY as measured over an actural operating period of 1000 hours.Standard stabilites are 10,20, and 50 PPM/1000 hours.Units having stabilities of less than 5PPM/1000 hours are available on special request.Features of the USR931 are:(1)case:hermetically sealed glass case. DO-7; (2)finish:all external surfaces are corrosion resistant and leads solderable; (3)thremal resistance:300/W(typical)junction to lead at 0.375-inches from body.; (4)polarity:diode to be operated with the banded end positive with respect to the opposite end.

The absolute maximum ratings of the USR931 can be summarized as:(1)operaing temperature range:-65~175; (2)maximum lead temperature 1/8 ± 1/32 inch from case for 8 seconds:230; (3)maximum dc power dissipation at or below 50 amnbient; (4)linear derating:3.2 mW/; (5)maximum steady state current(Izm)at +150:7.5mA.

The electrical characteristics(Ta=25) of the USR931 can be summarized as:(1)nominal zener voltage ± 5% Vz@Izt:9.3V; (2)zener test current ±0.01mA IZT :7.5mA; (3)maximum zener impenance ZZT@IZT:20OHMS; (4)voltage temperature stability VZT maximum:3.4mV; (5)temperature range:25 to 100 effective temperature coefficient:0.0005%/.If you want to know more information such as the electrical characteristics ,please download the datasheet in www.seekdatasheet.com .