component
MJD127D
Public Made by Adomby adom
Slkor SLKORMICRO Elec Bipolar (BJT), TO-252. 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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README
markdownMJD127D
Slkor SLKORMICRO Elec · Bipolar (BJT) · TO-252
MJD127D from Slkor SLKORMICRO Elec, in a TO-252. 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 | Base of the PNP Darlington; VEBO max -5 V, and the base-emitter saturation voltage is -4.5 V max at IC=-8 A, IB=-80 mA. |
| 2 | Collector | passive | Collector (also the mounting tab); VCEO -100 V, VCBO -100 V, continuous IC -8 A. |
| 3 | Emitter | passive | Emitter of the PNP Darlington, with an internal diode to the collector shown in the schematic; emitter cutoff current is -2 mA max at VEB=-5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| 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 | -100 | V | 1 | |||
| Collector-Emitter Voltage | VCEO | -100 | V | 1 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 1 | |||
| Collector Current-Continuous | IC | -8 | A | 1 | |||
| Total Power Dissipation | PC | 1.75 | W | @ Ta=25℃ | 1 | ||
| Collector Power Dissipation | PC | 20 | W | TC=25℃ | 1 | ||
| Junction Temperature | TJ | 150 | ℃ | 1 | |||
| Storage Temperature Range | Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal Resistance, Junction to Ambient | Rth j-a | 71.4 | ℃/W | 1 | |||
| Collector-Emitter Breakdown Voltage | V(BR)CEO | -100 | V | IC= -30mA; IB= 0 | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat)-1 | -2 | V | IC=-4A; IB= -16mA | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat)-2 | -4 | V | IC=-8A; IB= -80mA | 2 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -4.5 | V | IC=-8A; IB= -80mA | 2 | ||
| Base-Emitter voltage | VBE(ON) | -2.8 | V | IC= -4A; VCE= -4V | 2 | ||
| Collector Cutoff Current | ICEO | -10 | uA | VCE=-50V; IE= 0 | 2 | ||
| Emitter Cutoff Current | IEBO | -2 | mA | VEB=-5V; IC= 0 | 2 | ||
| DC Current Gain | hFE1 | 1000 | 12000 | IC= -4A; VCE=- 4V | 2 | ||
| DC Current Gain | hFE2 | 100 | IC=-8A; VCE= -4V | 2 | |||
| Output Capacitance | COB | 300 | pF | IE=0; VCB= -10V; f= 1.0MHz | 2 |
CAD (KiCad official)
- Symbol:
MJD127D - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
mjd127d-etched.step/mjd127d-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mjd127d.step/mjd127d.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (3 pp, sha256
0e50e18f0ac2a3ac, retrieved 2026-10-18, 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).