| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LH0004 |  128Kb/6P | LH0004 High Voltage Operational Amplifier |
 National Semiconductor ... | LH0004CH |  128Kb/6P | LH0004 High Voltage Operational Amplifier |
| LH0004H |  128Kb/6P | LH0004 High Voltage Operational Amplifier |
| LH0004H-MIL |  128Kb/6P | LH0004 High Voltage Operational Amplifier |
 National Semiconductor ... | LH0003 |  106Kb/ 4P | Wide Bandwidth Operational Amplifier |
 National Semiconductor ... | LH0004CH |  128Kb/ 6P | LH0004 High Voltage Operational Amplifier |
| LH0004H |  128Kb/ 6P | LH0004 High Voltage Operational Amplifier |
| LH0004H-MIL |  128Kb/ 6P | LH0004 High Voltage Operational Amplifier |
| LH0020 |  66Kb/ 3P | HIGH GAIN OPERATIONAL AMPLIFIER |
| LH0020C |  66Kb/ 3P | HIGH GAIN OPERATIONAL AMPLIFIER |
| LH0020CG |  66Kb/ 3P | HIGH GAIN OPERATIONAL AMPLIFIER |
| LH0020G |  66Kb/ 3P | HIGH GAIN OPERATIONAL AMPLIFIER |
| LH0021 |  264Kb/ 14P | 1.0 Amp Power Operational Amplifier |
| LH0021C |  264Kb/ 14P | 1.0 Amp Power Operational Amplifier |
| LH0021CK |  264Kb/ 14P | 1.0 Amp Power Operational Amplifier |