| Компонент | Описание | Производитель | PDF | Buy |
| 1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation |  |  |
| 1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
| 1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
| 1N4991 | Zener 5W Voltage Regulator | Sensitron | | |
| 1N4991 | Zener 5W Voltage Regulator | Sensitron | | |
| 1N4991 | ELECTRICAL CHARACTERISTICS | New Jersey Semi-Conductor Products, Inc. | | |
| 2N4991 | Silicon bilateral switch (SBS) in package TO-92 | List of Unclassifed Manufacturers | | |
| 2N4991 | BILATERAL SWITCH | New Jersey Semi-Conductor Products, Inc. | | |
| LM4991 | 3W Audio Power Amplifier with Shutdown Mode | National Semiconductor | | |
| RN4991 | Silicon NPN Epitaxial Type (PCT Process) Silicon PNP Epitaxial Type (PCT Process) | Toshiba Semiconductor | | |
| WM4991 | 1.57mm (.062") Diameter, Standard .062" Pin and Socket Crimp Terminal, Female, with Tin (Sn) Plated Brass Contact, 18-24 AWG, Reel | Molex Electronics Ltd. | | |
| NTE4991 | Surge Clamping, Transient Overvoltage Suppressor Bidirectional | NTE Electronics | | |
| MBS4991 | Silicon Bidirectional Switches(Diode Thyristors) | Motorola, Inc | | |
| MAX4991 | Low RON, Dual-SPDT/Single-DPDT Analog Switches with Slow Turn-On Time | Maxim Integrated Products | | |
| XRK4991 | 3.3V HIGH-SPEED (85 MHZ) PROGRAMMABLE SKEW CLOCK BUFFER | Exar Corporation | | |
| JAN1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
| JANS1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
| IS31AP4991 | 1.2W AUDIO POWER AMPLIFIER WITH ACTIVE-LOW STANDBY MODE | Integrated Silicon Solution, Inc | | |
| JANTX1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
| JANTXV1N4991 | 5 WATT GLASS ZENER DIODES | Microsemi Corporation | | |
