1N935(A)(B)(UR)-1N935(A)(B)(UR) TEMPERATURE COMPENSATED ZENER REFERENCE DIODES High-reliability discrete products and engineering services since 1977 FEATURES Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number. Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix. Available as surface mount by adding “UR” suffix. MAXIMUM RATINGS Characteristics Values Junction and storage temperatures -65 to +175°C DC power dissipation 500mW @ TL = 25°C and maximum current IZM of 50 mA. For optimum voltage temperature stability, IZ = 7.5mA (less than 75 mW in dissipated power) Solder temperatures 260°C for 10 s (maximum) ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) Part number Notes 1 Zener voltage VZ @ IZT Zener test current IZT Notes 1 & 4 Maximum zener impedance ZZT @ IZT Voltage temperature stability VZT maximum Note 2 Notes 3 & 4 Temperature range Effective temperature coefficient αVZ Volts mA Ohms mV °C %/°C 1N935 8.55-9.45 7.5 20 67 0 to +75 0.01 1N935A 8.55-9.45 7.5 20 139 -55 to +100 0.01 1N935B 8.55-9.45 7.5 20 184 -55 to +150 0.01 1N936 8.55-9.45 7.5 20 33 0 to +75 0.005 1N936A 8.55-9.45 7.5 20 69 -55 to +100 0.005 1N936B 8.55-9.45 7.5 20 92 -55 to +150 0.005 1N937 8.55-9.45 7.5 20 13 0 to +75 0.002 1N937A 8.55-9.45 7.5 20 27 -55 to +100 0.002 1N937B 8.55-9.45 7.5 20 37 -55 to +150 0.002 1N938 8.55-9.45 7.5 20 6 0 to +75 0.001 1N938A 8.55-9.45 7.5 20 13 -55 to +100 0.001 1N938B 8.55-9.45 7.5 20 18 -55 to +150 0.001 1N939 8.55-9.45 7.5 20 3 0 to +75 0.0005 1N939A 8.55-9.45 7.5 20 7 -55 to +100 0.0005 1N939B 8.55-9.45 7.5 20 9 -55 to +150 0.0005 1N940 8.55-9.45 7.5 20 1.3 0 to +75 0.0002 1N940A 8.55-9.45 7.5 20 2.7 -55 to +100 0.0002 1N940B 8.55-9.45 7.5 20 3.7 -55 to +150 0.0002 Note 1. For devices with tighter tolerances, use a nominal voltage of 9.2V and add a hyphenated suffix to the part number for desired tolerance at the end of the part number, ie. – 2% Note 2. Measured by superimposing 0.75mA ac rms on 7.5 mA dc @ 25°C Note 3. The maximum allowable change observed over the entire temperature range, i.e. the diode voltage will not exceed the specified mV change at any discrete temperature between the established limits Note 4. Voltage measurements to be performed 15 seconds after application of dc current Rev. 20150306 1N935(A)(B)(UR)-1N935(A)(B)(UR) High-reliability discrete products and engineering services since 1977 MECHANICAL CHARACTERISTICS Case DO-35 hermetically sealed glass Marking Body painted, alpha numeric Polarity Cathode band Case SOD-80 Marking Alpha numeric Polarity Cathode band TEMPERATURE COMPENSATED ZENER REFERENCE DIODES Rev. 20150306 1N935(A)(B)(UR)-1N935(A)(B)(UR) High-reliability discrete products and engineering services since 1977 TEMPERATURE COMPENSATED ZENER REFERENCE DIODES Rev. 20150306