s 8 t g = g fy s 8 8 = FAST RECOVERY RECTIFIERS SELECTOR GUIDE n ke 8 ? wn oO Zz e <a a ir] 9 <a Ee a oO > 6 2 20 25 30 100 140 250400 750 Ik AVERAGE CURRENT-AMPERES STANDARD RECTIFIERS SELECTOR GUIDE 1N3987-90 IN4S10-1 IN3289-96/4870 ai70 4180 Aa INHBIA- (2 12 20 20 20 25 35 35 40 = 100 100 I50 160 250 275 400 7401000 1500 AVERAGE CURRENT AMPERES 130Silicon 1N248-50,A,B Rectifier L J 10A & 20A Types These stud mounted diffused junction silicon rectifiers are designed for all rectifier applications in the 10 to 20 ampere range. A high junction temperature rating and an extremely low forward ) voltage drop and thermal impedance permit high current operation with minimum space require- ments. These rectifiers may be mounted directly to a chassis or a fin or may be electrically in- sulated from the heat sink by using the mica washer insulating kit General Electric research, advanced development and product design have resulted in a highly efficient rectifying junction. This feature, plus a mechanical design employing high temperature hard solders and welds for all internal and external joints and seals, which eliminates common sources of thermal fatigue failure, has produced a silicon rectifier with outstanding reliability under all operating conditions. electrical ratings and Specifications (60 crs, resistive or inductive Load) t t 1N248 1N249 1N250 1N248A 1N249A 1N250A 1N248B 1N249B 1N250B Max. Allow. Peak Reverse Voltage (Repetitive, 65C to +175C) * 50 100 200 50 100 200 50 100 200 Volts Max. Allow. Peak Reverse Voltage (Repetitive at 25C) * 50 100 200 50 100 200 55 110 220 Volts Max. Allow. RMS Voltage 35 70 140 35 70 140 35 70 140 Volts Max. Allow. DC Blocking Voltaget 50 100 200 50 100 200 50 100 200 Volts Max. Allow. Forward Current (Single Phase or Three Phase 150C stud temp.) ~ 10 Amp DC a~ 20 Amp DC > a- 20 Amp DC ~ Peak Recurrent Forward Current awe 45 Amp a 90 Amp a a 90 Amp ~- Max. Allow. Peak One-Cycle Surge Current #- 200 Amp a ~=t 350 Amp ~w 350 Amp p Max. Full Load Voltage Drop (T; = 25C) At 25A -1.5 Volts At50A ~ai 1.5 Volts - 1.5 Volts Max. Leakage Current at Full Load (Single Phase, Full Cycle Aver- age, 150C stud temp.) i 5 milliamp _ Junction Operating and Storage Temp. Range a _$_ 65C to +175C Maximum Stud Torque 30 inch-pounds. *Maximum voltages apply with a heat sink thermal resistance of 12C/watt or less at maximum rated junction temperature. +Maximum voltages apply with a heat sink thermal resistance of 5C/watt or less at maximum rated junction temperature. 2011N248-50, A, B | OUTLINE DRAWING tJ INSULATING {i 400 HARDWARE _...- $ 300 KIT* DIRECTION OF EASY CONVENTIONAL = 200 CURRENT FLOW ! 100 - 1/4-28 NF-2A a 150 a 90 r) 40 DIA i < oO 4 . a mF = 10 .220 = DIA> || 125 | aaN 2 MIN. LS o | | 2 452 | 450) o | 422 MAX | 687 Ww 100 677 a MIN 5 NOTE 1: Unit weight.5 07 1000___] q NOTE 2: Mica washer in mounting kit may MAX Fe add approx 2.5C/watt thermal resistance o stud to heatsink, za al Complies with EIA registered outline DO-5 _ Oo 5 lO 615 20 25 3.0 *Available upon request. D INSTANTANEOUS FORWAR VOLTAGE DROP-VOLTS 1. TYPICAL FORWARD CHARACTERISTICS 18 A 16 L. y qd z IN248 IN249 1" IN250 "| ? j. 14 fp IN248A IN2Z49A 7 INZ5OA LY ' 5 IN2 488 meee IN250B w PHASE w e A 2 OR THREE PHASE 12 > 5 Q w / | z MAXIMUM ALLOWABLE 2 10 Z STUD TEMPERATURE ra 3 AS A FUNCTION OF uw a o @ z 2 V / 09 NOT USE CURVES BEYOND z wa 1 eh 44 50 VOLTS FOR IN248, IN248A AND IN248B z z 7 7 100 VOLTS FOR IN249, IN249A AND IN249B 3 Z | 200 VOLTS FOR iN250, IN2SOA AND IN2S0B z zea 1. |_| ; 2 MAXIMUM LEAKAGE CURREN x & JUNCTION TEMPERATURE: -68C Tro 175*C = 2 % 50 100 150 200 250 300 4 8 12 16 20 24 INSTANTANEOUS REVERSE VOLTAGE - VOLTS AVERAGE FORWARD CURRENT ~AMPERES 2. REVERSE CHARACTERISTICS 3. MAXIMUM ALLOWABLE STUD TEMPERATURE 1N248, 1N249, 1N250 160 pe, 2 170 == wm 350 Mon i ~ w p '60 <{ P| = 300 q PLE SINGLE PHASE 4 MN. p< OR THREE PHASE 5 & 180 MAXIMUM ALLOWABLE ia = 250 SURGE CURRENT AT | w K = RATED LOAD CONDITIONS 8 140 N\ 3 | a L SIX PHASE = = 200 ~ 130 N x L-in2e4s | L-IN248A, IN248B a 5 N\ x IN249 LH IN249A, IN249B 5 MAXIMUM ALLOWABLE STUD \ N\ S180 IN250 IN250A, IN2508 S !20-- TEMPERATURE A > Zz FUNCTION OF FORWARD N N\ z CURRENT FOR IN248A r_] = o} IN249A, IN2S5OA, IN2468, Z r 3 IN249B, IN2508 R 10 | 100 2 | a = 50 a Ww s 10 15 20 25 30 a AVERAGE FORWARD CURRENT ~ AMPERES oF 2 4 6 8 10 20 40 60 4. MAXIMUM ALLOWABLE STUD TEMPERATURE 1N248A, 1N249A, 1N250A 1N248B, 1N249B, 1N250B 202 CYCLES AT 60 CRS 5. SURGE RATING