STMicroelectronics LM123K Linear Controllers
Linear Voltage Regulator IC Positive Fixed 1 Output 3A TO-3
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM123K
Detailed Description
IC REG LINEAR 5V 3A TO3
Package
TO-204AA, TO-3
Key Features
Package / Case: TO-204AA, TO-3; Mounting Type: Through Hole
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
LM123K Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics LM123K Linear Controllers technical specifications.
General
Package / Case
TO-204AA, TO-3
Mounting Type
Through Hole
Operating Temperature
-55°C ~ 150°C
Lifecycle Status
Obsolete
Output Type
Fixed
Max Input Voltage
20V
Output Current
3A
Output Configuration
Positive
Output Voltage
5V
Number of Regulators
1
Alternate Parts Comparison (LM123K vs LM138K vs LM338K vs LM250K)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-204AA, TO-3 | TO-204AA, TO-3 |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Operating Temperature | -55°C ~ 150°C | -55°C ~ 150°C | 0°C ~ 125°C | -25°C ~ 150°C |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Max Input Voltage | 20V | 35V | 35V | 35V |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 3A | 5A | 5A | 3A |
| Output Type | Fixed | Adjustable | Adjustable | Adjustable |
| Output Voltage | 5V | 1.2V | 1.2V | 1.2V |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature | Over Current, Over Temperature | Over Current, Over Temperature |
| PSRR | -- | 75dB ~ 60dB (120Hz) | 75dB ~ 60dB (120Hz) | 86dB ~ 65dB (120Hz) |
| Action |
More Parts in Voltage Regulators - Linear
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.