Diodes Explained - The basics how diodes work working principle pn junction
DIODE GEN PURP 100V 200MA SOD80
The LL4148 is a small Signal Diode for general use and is also suitable for many different applications. This article mainly introduces Diagram, Pinout, Datasheet and other detailed information about ON Semiconductor LL4148.
The LL4148 is a small Signal Diode for general use and also suitable for many different applications.
A diode is a semiconductor device that only enables current to flow in one direction. The current must always flow from the anode to the cathode. The LL4148 is a silicon epitaxial planar diode with a cathode band identification and is available in a glass container. It has a strong conductivity and a high level of dependability. The quick recovery time of this diode, which is only 8ns to 4ns at a forward current of 300mA, makes it ideal for applications requiring extremely fast switching. This diode is mostly used for extremely quick switching. The LL4148 is used in a variety of projects, such as heat monitoring, detecting the condition of an LED to operate another circuit, and so on.
The LL4148 Pinout is shown as follows.
Pinout
| Pin Number | Pin Name | Description |
| 1 | Anode | Current always Enters through Anode |
| 2 | Cathode | Current always Exits through Cathode |
The followings are LL4148 Symbol, Footprint and 3D Model.
Symbol
Footprint
3D Model
• Silicon Epitaxial Planar Diode
• Electrical Data Identical with the Devices 1N4148 and 1N4448 Respectively
• AEC-Q101 Qualified
• VF = max. 1000 mV at IF = 50 mA
• 500mW Power Dissipation
• 300°C/W Junction-to-ambient Thermal Resistance
• 4pF at 1MHz Total Capacitance
• Fast Switching Speed
• Glass package version for high reliability
• Available in both Through-hole and Surface mount versions
• Conductance is also high
• PB free
• Rohs compliant
• Case: Mini MELF SOD-80 Glass Case
ON Semiconductor LL4148 technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor LL4148.
| Attribute | Value |
|---|---|
| Lifecycle Status | ACTIVE (Last Updated: 1 day ago) |
| Factory Lead Time | 20 Weeks |
| Contact Plating | Tin |
| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 |
| Number of Pins | 2 |
| Supplier Device Package | SOD-80 |
| Weight | 4.535924g |
| Packaging | Tape & Reel (TR) |
| Published | 2013 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Max Operating Temperature | 175°C |
| Min Operating Temperature | -55°C |
| Base Part Number | LL4148 |
| Voltage | 100V |
| Element Configuration | Single |
| Speed | Small Signal =< 200mA (Io), Any Speed |
| Current | 2A |
| Diode Type | Standard |
| Current - Reverse Leakage @ Vr | 25nA @ 20V |
| Power Dissipation | 500mW |
| Voltage - Forward (Vf) (Max) @ If | 1V @ 10mA |
| Attribute | Value |
|---|---|
| Forward Current | 200mA |
| Operating Temperature - Junction | -55°C~175°C |
| Max Surge Current | 2A |
| Voltage - DC Reverse (Vr) (Max) | 100V |
| Current - Average Rectified (Io) | 200mA |
| Forward Voltage | 1V |
| Max Reverse Voltage (DC) | 100V |
| Average Rectified Current | 200mA |
| Reverse Recovery Time | 4 ns |
| Peak Reverse Current | 25nA |
| Max Repetitive Reverse Voltage (Vrrm) | 100V |
| Capacitance @ Vr, F | 4pF @ 0V 1MHz |
| Peak Non-Repetitive Surge Current | 2A |
| Reverse Voltage | 100V |
| Max Forward Surge Current (Ifsm) | 2A |
| Recovery Time | 4 ns |
| Height | 1.5mm |
| Length | 3.6mm |
| Width | 1.5mm |
| REACH SVHC | No SVHC |
| Radiation Hardening | No |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
The following shows LL4148 Marking Diagram.
Marking Diagram
The LL4148 Order Information is shown as follows.
Order Information
The following shows LL4148 Layout.
Layout
| Part Number | Description | Manufacturer |
| DL4148DIODES | Rectifier Diode, 1 Element, 0.15A, 75V V(RRM), Silicon, MINIMELF-2 | Micro Commercial Components |
| FDLL4148_NLDIODES | Rectifier Diode, 1 Element, 0.2A, 100V V(RRM), Silicon, DO-213AC, LL-34, 2 PIN | Fairchild Semiconductor Corporation |
| 933930220135DIODES | 0.2A, 100V, SILICON, SIGNAL DIODE, HERMETIC SEALED, GLASS, SMD, 2 PIN | NXP Semiconductors |
| LL4148-CDIODES | Rectifier Diode, 1 Element, 0.15A, 100V V(RRM), Silicon, HALOGEN AND LEAD FREE, HERMETIC SEALED, GLASS, MINIMELF-2 | Secos Corporation |
| LL4148-T1-LFDIODES | Rectifier Diode, 1 Element, 0.15A, 75V V(RRM), Silicon, ROHS COMPLIANT, GLASS, MINIMELF-2 | Won-Top Electronics Co Ltd |
| JANTXV1N4148UR-1DIODES | DIODE 0.2 A, SILICON, SIGNAL DIODE, Signal Diode | Defense Supply Center Columbus |
• Extreme Fast Switches
• Signal Processing
• Can Be Used to Prevent Reverse Polarity Problem
• Protect Power Electronic Switches That are Operating with High Switching Frequency
• Used As a Protection Device
• Current Flow Regulators
The following figure is LL4148 Package.
Package
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