component
DTC124EE-MS
Public Made by Adomby adom
MSKSEMI Digital Transistors, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownDTC124EE-MS
MSKSEMI · Digital Transistors · SOT-523
DTC124EE-MS from MSKSEMI, in a SOT-523. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BASE (INPUT) | input | Base/input pin connected through the internal 22 kΩ R1 (15.4 to 28.6 kΩ) with R1/R2 ratio 0.8 to 1.2 for the DTC124EE-MS. |
| 2 | EMITTER (GROUND) | power_in | Emitter/ground pin connected to the internal 22 kΩ R2 and the transistor emitter, serving as the circuit ground reference. |
| 3 | COLLECTOR (OUTPUT) | output | Collector/output pin rated for VCEO of 50 V, VCBO of 50 V and IC of 100 mA maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-523 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-Base Voltage | VCBO | 50 | V | TA = 25°C | 2 | ||
| Collector-Emitter Voltage | VCEO | 50 | V | TA = 25°C | 2 | ||
| Collector Current | IC | 100 | mA | TA = 25°C | 2 | ||
| Power Dissipation | PD | 150 | mW | TA = 25°C | 2 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 600 | °C/W | 2 | |||
| Junction & Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 2 | ||
| Collector-Base Cutoff Current | ICBO | 100 | nA | VCB=50V, IE=0A | 3 | ||
| Collector-Emitter Cutoff Current | ICEO | 500 | nA | VCE=50V, IB=0A | 3 | ||
| Emitter-Base Cutoff Current | IEBO | 0.2 | mA | VEB=6.0V, IC=0A | 3 | ||
| Collector-Base Breakdown Voltage | V(BR)CBO | 50 | V | IC=10uA, IE=0A | 3 | ||
| Collector-Emitter Breakdown Voltage | V(BR)CEO | 50 | V | IC=2.0mA, IB=0A | 3 | ||
| DC Current Gain | HFE | 60 | 100 | VCE=10V, IC=5.0mA | 4 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.25 | V | IC=10mA, IB=0.3mA | 4 | ||
| Output Voltage (on) | VOL | 0.2 | V | RL=1.0KΩ, VCC=5.0V, VB=2.5V | 4 | ||
| Output Voltage (off) | VOH | 4.9 | V | RL=1.0KΩ, VCC=5.0V, VB=0.5V | 5 | ||
| Input Resistor | R1 | 15.4 | 22 | 28.6 | KΩ | 5 | |
| Resistor Ratio | R1/R2 | 0.8 | 1 | 1.2 | 5 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Matte Tin(Sn) Lead Finish Weight: approx. 0.002g SOT-523 | 2 |
CAD (KiCad official)
- Symbol:
DTC124EE-MS - Footprint:
Package_TO_SOT_SMD:SOT-523 - 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
dtc124ee-ms-etched.step/dtc124ee-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dtc124ee-ms.step/dtc124ee-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (7 pp, sha256
68e1642e6230d629, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).