• 1N6638US,1N6642US, 1N6643US AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/578 • 1N6638U,1N6642U, 1N6643U AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/578 1N6638U & US 1N6642U & US 1N6643U & US • SWITCHING DIODES • NON-CAVITY GLASS PACKAGE • METALLURGICALLY BONDED MAXIMUM RATINGS Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +175°C Operating Current: 300 mA Derating: 4.6 mA/°C Above TEC = + 110°C Surge Current: IFSM = 2.5A, half sine wave, Pw = 8.3ms ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified. V BR TYPES V RWM @ IR =100 µA V F1 V F2 (Pulsed) 1N6638U & US 1N6642U & US 1N6643U & US @ I F2 IFM =10 mA (Pulsed) tfr trr IF IR = 10 mA IF = 10 mA =50 mA IREC = 1 mA V (pk) V (pk) V dc V dc mA ns ns 150 100 75 125 75 50 0.8 1.0 1.0 1.1 1.2 1.2 200 100 100 20 20 20 4.5 5.0 6.0 DIM D F G S MILLIMETERS MIN MAX 1.78 2.16 0.48 0.71 4.19 4.95 0.08MIN. INCHES MIN MAX 0.070 0.085 0.019 0.028 0.165 0.195 0.003MIN. FIGURE 1 DESIGN DATA CASE: D-5D, Hermetically sealed glass case, per MIL-PRF- 19500/578 LEAD FINISH: Tin / Lead I R1 I R2 I R3 I R4 C T1 C T2 VR = 20 V @V R = V RWM V R = 20 V TA = 150°C V R = V RWM TA = 150°C VR= 0V VR= 1.5V nA dc µA dc µA dc µA dc pF pF 35 25 50 0.5 0.5 0.5 50 50 75 100 100 160 2.5 5.0 5.0 2.0 2.8 2.8 TYPES 1N6638U & US 1N6642U & US 1N6643U & US THERMAL RESISTANCE: (ROJEC): 50 °C/W maximum at L = 0 THERMAL IMPEDANCE: (ZOJX): 25 °C/W maximum POLARITY: Cathode end is banded. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) of this device is approximately + 4PPM / °C. The COE of the Mounting Surface System should be selected to provide a suitable match with this device. 22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: [email protected] IN6638U&US, IN6642U&US IN6643U&US and 1000 -65ºC 1 25º C 100 ºC 15 0ºC 10 0.1 .2 .3 .4 .5 .6 .7 .8 .9 VF - Forward Voltage (V) 1.0 1.1 1.2 FIGURE 2 Typical Forward Current vs Forward Voltage 1000 100 150ºC 10 IR - Reverse Current - (µA) IF - Forward Current - (mA) 100 C 100º 1 0.1 25ºC .01 -65ºC .001 20 40 60 80 100 120 140 Percent of Reverse Working Voltage (%) FIGURE 3 Typical Reverse Current vs Reverse Voltage NOTE : All temperatures shown on graphs are junction temperatures