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| # | Part: | Description: | Manuf. | Package | Pins | T°min | T°max | PDF size |
| 1. |  M491B | SINGLE-CHIP VOLTAGE SYNTHESIS TUNING SYSTEM WITH 1 ANALOG CONTROL | STMicroelectronics | STMICROELECTRONICS | - | - | - | 150 Kb |
| 2. | M491B | SINGLE CHIP VOLTAGE SYNTHESIS TUNING SYSTEMS WITH 1 ANALOG CONTROL | STMicroelectronics | STMICROELECTRONICS | - | - | - | 1.07 Mb |
| 3. | 2N491B | Diode | New Jersey Semi-Conductor Products, Inc. | NJSEMI | - | - | - | 142 Kb |
| 4. | TC9491B | LOW POWER, BANDGAP VOLTAGE REFERENCES | TelCom Semiconductor, Inc | TELCOM | - | - | - | 36 Kb |
| 5. | AMS9491B | 1.235V VOLTAGE REFERENCE | Advanced Monolithic Systems | ADMOS | - | - | - | 82 Kb |
| 6. | AMS9491B | 1.235V VOLTAGE REFERENCE | Advanced Monolithic Systems | ADMOS | - | - | - | 73 Kb |
| 7. | R1172H491B | POWER MANAGEMENT ICs MARK INFORMATIONS | RICOH electronics devices division | RICOH | - | - | - | 26 Kb |
| 8. | R1172N491B | SUPER LOW ON RESISTANCE / LOW VOLTAGE 1A LDO | RICOH electronics devices division | RICOH | - | - | - | 804 Kb |
| 9. | R1173H491B | Super low on resistance/Low voltage LDO | RICOH electronics devices division | RICOH | - | - | - | 636 Kb |
| 10. | R1173H491B | SERIES MARK SPECIFICATION | RICOH electronics devices division | RICOH | - | - | - | 103 Kb |
| 11. | R3111D491B | LOW VOLTAGE DETECTOR | RICOH electronics devices division | RICOH | - | - | - | 1.42 Mb |
| 12. | R3111Q491B | LOW VOLTAGE DETECTOR | RICOH electronics devices division | RICOH | - | - | - | 1.42 Mb |
| 13. | R1173D491B | Super low on resistance/Low voltage LDO | RICOH electronics devices division | RICOH | - | - | - | 636 Kb |
| 14. | HVP200-491B | UNIVERSAL INPUT HARMONIC CORRECTION AC-DC OPEN FRAME AND ACTIVE CURRENT SHARING MULTI-OUTPUT 200 WATTS INTERNAL SWITCHING POWER SUPPLIES | HITRON ELECTRONICS CORPORTION | HITRON | - | - | - | 373 Kb |
| 15. | HVI102-491B | UNIVERSAL INPUT AC-DC OPEN FRAME SINGLE & MULTI-OUTPUT 100 WATTS INTERNAL SWITCHING POWER SUPPLIES | HITRON ELECTRONICS CORPORTION | HITRON | - | - | - | 351 Kb |
| 16. | HVP149-491B | UNIVERSAL INPUT HARMONIC CORRECTION AC-DC OPEN FRAME SINGLE & MULTI-OUTPUT 150 WATTS INTERNAL SWITCHING POWER SUPPLIES | HITRON ELECTRONICS CORPORTION | HITRON | - | - | - | 330 Kb |
| 17. | SFD66S35K491B-F | Motor-Run and Power Supply Capacitors | Cornell Dubilier Electronics | CDE | - | - | - | 196 Kb |
| 18. | SFD66S40K491B-F | Motor-Run and Power Supply Capacitors | Cornell Dubilier Electronics | CDE | - | - | - | 196 Kb |
| 19. | RN5RK491B-TL | SOT-23-5 VFM STEP-UP DC/DC CONVERTER | RICOH electronics devices division | RICOH | - | - | - | 224 Kb |
| 20. | RN5RK491B-TR | SOT-23-5 VFM STEP-UP DC/DC CONVERTER | RICOH electronics devices division | RICOH | - | - | - | 224 Kb |
