1N4148 Surface Mount High-Speed Small Signal Switching Diode - MELF SMD Package

The 1N4148 Surface Mount Diode is a fast-switching small signal diode designed for high-speed signal processing, switching, and protection applications. Despite often being mistakenly called a Zener, the 1N4148 is a standard silicon switching diode, optimized for low current, high-speed operation in logic circuits, RF systems, and signal conditioning stages.

This SMD version is housed in a compact MELF (Metal Electrode Leadless Face) glass package, offering excellent thermal stability, mechanical strength, and consistent electrical performance in automated SMT assembly environments.

Features:

1. High-speed switching performance
2. Low forward voltage drop
3. Fast reverse recovery time
4. Ideal for signal processing and logic circuits
5. Robust glass MELF SMD package
6. High reliability and thermal stability
7. Suitable for automated pick-and-place assembly
8. Compact size for space-constrained PCB designs

Specifications:

1. Diode Type: Silicon Switching Diode (Not Zener)
2. Model: 1N4148
3. Package Type: MELF (SMD)
4. Maximum Repetitive Reverse Voltage (VRRM): 100V
5. Forward Continuous Current (IF): 150mA
6. Surge Forward Current (IFSM): 2A
7. Forward Voltage (VF) @ 10mA: Approx. 1.0V
8. Reverse Recovery Time (trr): 4ns
9. Reverse Leakage Current (IR): ≤ 25nA @ 20V
10. Power Dissipation: 500mW (typical)
11. Junction Temperature Range: -65°C to +175°C
12. Mounting Type: Surface Mount (SMD)

Package Includes:

1 × 1N4148 Surface Mount Switching Diode – MELF SMD Package