TECHNICAL DATA electroplating equipment; de-blocking service; magnetic amplifiers; and a wide variety of other heavy-duty applications. These types are reverse-polarity versions of types IN248A, 1N248B, and 1N248C, respectively. JEDEC No. DO-5 package; outline 8, Outlines Section. SILICON RECTIFIERS i Hermetically sealed 20-ampere IN249A types used in generator-type power supplies in mobile equipment; dc-to- IN 249B de converters and battery chargers; [slk power supplies for aircraft, marine, IN249C and missile equipment; transmitters, rf generators, and de-motor supplies; machine-tool controls; welding and electro- plating equipment; de-blocking service; magnetic amplifiers; and a wide variety of other heavy-duty applications. These types are designed to meet stringent environmental and mechanical specifications. The special copper-alloy mounting stud can withstand an installing torque up to 50 inch-pounds. JEDEC No. DO-5 package; outline 3, Outlines Section. Types 1N249A and 1N249B are used prin- cipally for renewal purposes; they are similar to type 1N249C except for some slightly lower ratings, and can be directly replaced by type IN249C. Type 1N249C is identical with type 1N1198A except for the following items: MAXIMUM RATINGS For power-supply frequency of 60 cpa, single- phase operation, with resistive or inductive load PEAK REVERSE VOLTAGE 110 maz volts RMS SUPPLY VOLTAGE... TT max volts DC BLOCKING VOLTAGE... 100 max volta CHARACTERISTICS Maximum Reverse Current: Dynamic.. 00.0... cc eect eee eter ieee ever entaeerengs 3.6 ma * Average value for one complete cycle at maximum peak reverse voltage, maximum average forward current, and case temperature = 150C, SILICON RECTIFIERS q Hermetically sealed 20-ampere IN249RA types used in generator-type power a supplies in mobile equipment; dc-to- IN 249RB dc converters and battery chargers; : a power supplies for aircraft, marine, IN249RC and missile equipment; transmitters, rf generators, and dce-motor power supplies; machine-tool controls; welding and electroplating equipment; de-blocking service; magnetic amplifiers; and a wide variety of other heavy-duty applications. These types are reverse-polarity versions of types IN249A, 1N249B, and 1N249C, respectively. JEDEC No. DO-5 package; outline 3, Outlines Section. SILICON RECTIFIERS T* Hermetically sealed 20-ampere IN250A types used in generator-type power supplies in mobile equipment; dc-to- 1N250B de converters and battery chargers; K power supplies for aircraft, marine, IN250C and missile equipment; transmitters, rf generators, and dc-motor power supplies; machine-tool controls; welding and 77