| 1638761 | U4256BM | Frequency synthesizer for radio tuning | Atmel |
| 1638762 | U4256BM | Frequency Synthesizer for Radio Tuning | TEMIC |
| 1638763 | U4256BM-AFS | Frequency Synthesizer for Radio Tuning | TEMIC |
| 1638764 | U4256BM-AFSG3 | Frequency Synthesizer for Radio Tuning | TEMIC |
| 1638765 | U4256BM-R | Frequency Synthesizer for Radio Tuning | Atmel |
| 1638766 | U4256BM-RFS | Frequency Synthesizer for Radio Tuning | Atmel |
| 1638767 | U4256BM-RSG3 | Frequency Synthesizer for Radio Tuning | Atmel |
| 1638768 | U426 | N-Channel Dual JFET | Calogic |
| 1638769 | U426 | Low Leakage, Low Drift, Monolithic Dual, N-Channel JFET | Linear Systems |
| 1638770 | U426B | Infrared Driver | TEMIC |
| 1638771 | U4270B | FM IF limiter amplifier and detector | TEMIC |
| 1638772 | U4275B | FM receiving condition Analyzer and Multipath Noise Cancellation IC | Atmel |
| 1638773 | U4275B | FM-Receiving Condition Analyser and Multipath Noise | TEMIC |
| 1638774 | U4276B | FM Multipath Noise Cancellation | TEMIC |
| 1638775 | U4280 | AM / FM - PLL | TEMIC |
| 1638776 | U4280BM | AM / FM - PLL | TEMIC |
| 1638777 | U4280BM-B | AM / FM - PLL | TEMIC |
| 1638778 | U4280BM-BFL | AM / FM - PLL | TEMIC |
| 1638779 | U4283BM | AM/FM - PLL | TEMIC |
|
| 1638780 | U4284BM | AM/FM - PLL | TEMIC |
| 1638781 | U4285BM | AM/FM PLL (for RDS application), high signal-to-noise ratio, 4 switching outputs, integrated push-pull stage, fast response time (for RDS) | Atmel |
| 1638782 | U4285BM | AM / FM - PLL | TEMIC |
| 1638783 | U4285BM-AFS | AM / FM - PLL | TEMIC |
| 1638784 | U4285BM-AFSG3 | AM / FM - PLL | TEMIC |
| 1638785 | U4286BM | AM/FM - PLL | TEMIC |
| 1638786 | U4286BM-BFP | AM / FM-PLL | TEMIC |
| 1638787 | U4286BM-BFPG3 | AM / FM-PLL | TEMIC |
| 1638788 | U4287BM | AM/FM - PLL | TEMIC |
| 1638789 | U4288BM | AM/FM - PLL | TEMIC |
| 1638790 | U4289BM | AM/FM PLL (for RDS application), reference oscillator up to 15 MHz, high signal-to-noise ratio, 1 switching output, integrated loop-push-pull stage | Atmel |
| 1638791 | U4289BM | AM / FM - PLL | TEMIC |
| 1638792 | U4289BM-AFP | AM / FM - PLL | TEMIC |
| 1638793 | U4289BM-AFPG3 | AM / FM - PLL | TEMIC |
| 1638794 | U4289BM-MFP | AM/FM PLL with 1 Switch | Atmel |
| 1638795 | U4289BM-MFPG3 | AM/FM PLL with 1 Switch | Atmel |
| 1638796 | U4292B | FM-IF IC for the DYNAS System | TEMIC |
| 1638797 | U429B-FP | Driver For IR Transmitter Diodes (Current Sink) | TEMIC |
| 1638798 | U430 | Dual N-Channel silicon junction field-effect transistor | InterFET Corporation |
| 1638799 | U430 | Matched High Frequency/Low Noise | Vishay |
| 1638800 | U431 | Dual N-Channel silicon junction field-effect transistor | InterFET Corporation |
