| BU4-02 |  | Frontier Electronics | 4A SILICON SINGLE-PHASE BRIDGE RECTIFIER | Original | PDF | 73.95KB | 2 | 
| BU4021B |  | ROHM | Counter/Shift Register, Single, 8 Stage, Unidirectional, 16-DIP | Original | PDF | 69.26KB | 6 | 
| BU4021B |  | ROHM | High Voltage CMOS LOGIC ICs <Function Logic> Package: DIP16; Constitution materials list: Packing style: Tube packaging; Package quantity: 1000; Minimum package quantity: 1000; | Original | PDF | 515.73KB | 18 | 
| BU4021B |  | ROHM | 8-bit static shift register | Original | PDF | 58.65KB | 5 | 
| BU4021B |  | Unknown | The CMOS Device Manual (Japanese) 1993 | Scan | PDF | 30.78KB | 1 | 
| BU4021B |  | ROHM | CMOS Logic ICs | Scan | PDF | 454.55KB | 7 | 
| BU4021B/BF |  | ROHM | Standard Logic LSIs > CMOS logic BU4000B Series | Original | PDF | 58.65KB | 5 | 
| BU4021BF |  | ROHM | 8-bit static shift register | Original | PDF | 58.65KB | 5 | 
| BU4021BF |  | ROHM | Counter/Shift Register, Single, 8 Stage, Unidirectional, 16-SOP | Original | PDF | 69.26KB | 6 | 
| BU4021BF-E2 |  | ROHM | High Voltage CMOS LOGIC ICs <Function Logic> Package: SOP16; Constitution materials list: Packing style: Embossed Tape And Reel; Package quantity: 2500; Minimum package quantity: 2500; | Original | PDF | 515.73KB | 18 | 
| BU4021BF-E2 |  | ROHM | Logic - Shift Registers, Integrated Circuits (ICs), IC SHIFT REGISTER 8BIT 16SOP | Original | PDF |  | 20 | 
| BU4021BF-E2 |  | ROHM | Counter Shift Register, 8-Bit, Static Shift Register, SOP, Tape and Reel | Original | PDF | 69.26KB | 6 | 
| BU4027B |  | Unknown | The CMOS Device Manual (Japanese) 1993 | Scan | PDF | 27.13KB | 1 | 
| BU4027B |  | ROHM | CMOS Logic ICs | Scan | PDF | 454.55KB | 7 | 
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| BU4028 |  | ROHM | BCD-to-Decimal Decoder | Original | PDF | 64.15KB | 6 | 
| BU4028B |  | ROHM | Logic - Signal Switches, Multiplexers, Decoders, Integrated Circuits (ICs), IC DECODER BCD-TO-DECIMAL DIP16 | Original | PDF |  | 20 | 
| BU4028B |  | ROHM | High Voltage CMOS LOGIC ICs <Function Logic> Package: DIP16; Constitution materials list: Packing style: Tube packaging; Package quantity: 1000; Minimum package quantity: 1000; | Original | PDF | 515.73KB | 18 | 
| BU4028B |  | ROHM | BCD-to-Decimal Decoder | Original | PDF | 64.14KB | 6 | 
| BU4028B |  | ROHM | Decoder/Demultiplexer, Single, 4-Input, Non-Inverting, 16-DIP | Original | PDF | 74.89KB | 7 | 
| BU4028B |  | Unknown | The CMOS Device Manual (Japanese) 1993 | Scan | PDF | 30.37KB | 1 |