KUNG DAR ELECTRONICS CO EYE D M@@ 5287054 OO00003 7 Mf T7-O8-|3 =KUNG DAR Qua 1N4948. SERIES ye ee Se EONGIE FAST SWITCHING PLASTIC RECTIFIER SUMUn HN VOLTAGE RANGE 200 to 1000 Volts fm cree cen nea eee nt I on ee ces CURRENT 1.0 Ampere FEATURES e High surge current capability. bo-41 e Plastic package has Underwriters Laboratory Flammability Classification 94V-O utilizing Flame Retardant Epoxy Molding Compound. | 034 {.86) Void-free plastic in a DO-41 package. (25.4) 1.0 , e 1.0 ampere operation at T, = 55C with no MIN thermal runaway. | e Fast switching for high efficiency. e Exceeds environmental standards of MIL- (5.2) .205 STD-19500/228. 4.17 .160 MECHANICAL DATA Lf |] ag ga Case: Molded plastic (26.4) 1.0 Terminals: Axial leads, solderable MIN per MIL-STD-202, Method 208 Polarity: Band denotes cathode Mounting position: Any Weight: 0.012 ounce, 0.3 gram Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25C ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. For capacitive foad, derate current by 20%. 1N4942 1N4944 1N4946 1N4947 1N4948 UNITS Maximum Recurrent Peak Reverse Voltage 200 400 600 800 1000 Vv Maximum RMS Voltage 140 280 420 560 700 Vv Maximum DC Blocking Voltage 200 400 600 800 1000 Vv Maximum Average Forward Rectified Current 1.0 A .375", (9.5mm) Lead Length at TA = 55C Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load 30 A (JEDEC method) Maximum Forward Voltage at 1.0A 1.3 Vv Maximum Reverse Current T)= 25C 5.0 A at rated DC Blocking Voltage Tj = 100C 100 M Typical Junction Capacitance (Note 1) 12 pF Maximum Reverse Recovery Time (Note 2) 150 150 250 250 250 ns Storage and Operating Temperature Range 65 to +150 6] NOTES: 1Measured at 1 MHz and applied reverse voltage of 4.0 VDC. 2Reverse Recovery Test Conditions: |; = 5A, Ip = 1A, |, = .25A.c4E D M@@ 5287056 O000004 4 MT -903-12 easy ge tea ee = = KUNG DAR ELECTRONICS CO ~ NBM ie eit See 292, CHUNG-SHAN RD., KUAN-MIAO SHIAN, TAINAN HSIEN, TAIWAN, R. O. C. TEL:(06)5959763 - a Fig. 2-PEAK FORWARD SURGE CURRENT . RATING AND CHARACTERISTIC CURVES 9 30 1N4942 SERIES & a, z ag 3 Ee oe , Q Fig. 1I-FORWARD CURRENT DERATING CURVE di 2 -65C TO 175C wl . c= 20 fs Ey 54 MAXIMUM AVERAGE CURRENT RATING 9B w oF 14 SINGLE PHASE, HALF-WAVE, 6Hz, Wou, 45 at 42, RESISTIVE OR INDUCTIVE LOAD c <x c 3 .375" (mm) LEAD LENGTHS 2 = = E 1.0 qi oO 10 ee | a $ ws 4 as 5 0 <0 8 oS , mo - 4 #2 4 6 810 2 40 60 80100 wi , SN NUMBER OF CYCLES AT 60Hz < 20 40 60 60 100 120 140 160 180 AMBIENT TEMPERATURE, C Fig. 3-TYPICAL FORWARD CHARACTERISTICS 10 Fig. 4TYPICAL JUNCTION CAPACITANCE bE Z 100 fc fig 3 Le a a uf om 10 3 sf z & oa E rg 3 2 10 an : a, 2 < o 0 2 0.1 Z & - z 1 1 10 100 ot 0.6 0.9 1.2 1.5 18 REVERSE VOLTAGE, Vde INSTANTANEOUS FORWARD VOLTAGE, VOLTS Fig. 5REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM 50n 10n Noninductive Noninductive Mv AMY +0.5A (+) 0u.t. (-) 26Vde tran 0 = GENERATOR een NOTE 2 0.28 ea (+) > Non- OSCILLOSCOPE } inductive NOTE 1 NOTES: 1, Rise Time*= 7ns max., 4 -1.0 : : Input Impedance = 1 megohm, 22pF ~ oltcmbe Set Time Base for 50/100ns/cm 2. Rise Time = 10ns max., Source tmpedance = 50 Ohms => == KUNG DAR E - LECTRONICS CO.,LTD = sa, 7 Ly = et Pal BA BASE Oh LL FeO OQ O aR