Overview
The LL4148-M-18 is a fast-switching diode produced by Vishay General Semiconductor - Diodes Division. It is a silicon epitaxial planar diode known for its high reliability and fast recovery time, making it ideal for applications requiring extremely fast switching. The diode is available in both through-hole and surface mount versions, including the Mini MELF SOD-80 glass case, which enhances its reliability and thermal performance.
Key Specifications
| Parameter | Value |
|---|---|
| Reverse Voltage (Vr) | 100V |
| Peak Forward Current (Ifsm) | 500mA |
| Power Dissipation | 500mW |
| Forward Voltage (Vf) | 0.62V to 1V |
| Reverse Current | 5uA |
| Diode Capacitance | 4pF |
| Junction Temperature | -55°C to 175°C |
| Storage Temperature Range | -65°C to +175°C |
| Reverse Recovery Time (trr) | 4ns |
| Package / Case | DO-213AC, MiniMELF, SOD-80 |
| No. of Pins | 2 Pins |
Key Features
- Fast switching speed with a recovery time of 4ns to 8ns at a forward current of 300mA.
- High reliability due to the glass package version.
- Available in both through-hole and surface mount versions.
- High conductance.
- Silicon epitaxial planar diode.
- Pb-free and RoHS compliant.
- Electrical data identical with the devices 1N4148 and 1N4448.
Applications
- Extreme fast switches.
- Prevention of reverse polarity problems.
- Protection of power electronic switches operating at high switching frequencies.
- Used as a protection device.
- Current flow regulators.
- Heat monitoring and detecting the state of LEDs to control other circuits.
Q & A
- What is the reverse voltage rating of the LL4148-M-18 diode?
The reverse voltage rating is 100V.
- What is the peak forward current of the LL4148-M-18 diode?
The peak forward current is 500mA.
- What is the forward voltage drop of the LL4148-M-18 diode?
The forward voltage drop is between 0.62V to 1V.
- What is the reverse recovery time of the LL4148-M-18 diode?
The reverse recovery time is 4ns.
- Is the LL4148-M-18 diode RoHS compliant?
Yes, the LL4148-M-18 diode is RoHS compliant.
- What are the common applications of the LL4148-M-18 diode?
Common applications include extreme fast switches, reverse polarity protection, and protection of power electronic switches.
- What is the junction temperature range of the LL4148-M-18 diode?
The junction temperature range is -55°C to 175°C.
- What are the equivalent diodes to the LL4148-M-18?
Equivalent diodes include BAS32, 1N4148, 1N4448, and 1N4154.
- What package types are available for the LL4148-M-18 diode?
The diode is available in DO-213AC, MiniMELF, and SOD-80 packages.
- Is the LL4148-M-18 diode suitable for high-frequency applications?
Yes, the LL4148-M-18 diode is suitable for high-frequency applications due to its fast recovery time.
