component
BLM2305
Public Made by Adomby adom
BL(Shanghai Belling) MOSFETs, SOT-23. 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
markdownBLM2305
BL(Shanghai Belling) · MOSFETs · SOT-23
BLM2305 from BL(Shanghai Belling), in a SOT-23. 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 | G | input | Gate; threshold VGS(th) -0.45 to -1.0V at ID=-250µA, absolute maximum VGS ±12V, drives the device fully on at -2.5V to -4.5V. |
| 2 | S | passive | Source of the P-channel MOSFET; continuous diode forward current IS max -4.1A. |
| 3 | D | passive | Drain; VDS max -20V, continuous ID -4.1A at TC=25°C and pulsed IDM -15A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL(Shanghai Belling) |
| Package | SOT-23 |
| Category | Transistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDS | -20 | V | TA=25℃ | 1 | ||
| Gate-Source Voltage | VGS | -12 | 12 | V | TA=25℃ | 1 | |
| Continuous Drain Current | ID | -4.1 | A | TC=25℃ | 1 | ||
| Continuous Drain Current | ID | -3.2 | A | TC=70℃ | 1 | ||
| Continuous Drain Current | ID | -3 | A | TA=25℃ | 1 | ||
| Continuous Drain Current | ID | -2.3 | A | TA=70℃ | 1 | ||
| Drain Current - Pulsed | IDM | -15 | A | Note 1: pulse width limited by maximum junction temperature | 1 | ||
| Maximum Power Dissipation | PD | 1.7 | W | TA=25℃ | 1 | ||
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 74 | ℃/W | Note 2: surface mounted on FR4 board, t ≤ 10 sec | 1 | ||
| Drain-Source Breakdown Voltage | BVDSS | -20 | V | VGS=0V ID=-250μA | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | -1 | μA | VDS=-20V,VGS=0V | 2 | ||
| Gate-Body Leakage Current | IGSS | -100 | 100 | nA | VGS=±12V,VDS=0V | 2 | |
| Gate Threshold Voltage | VGS(th) | -0.45 | -0.7 | -1 | V | VDS=VGS,ID=-250μA | 2 |
| Drain-Source On-State Resistance | RDS(ON) | 43 | 52 | mΩ | VGS=-4.5V, ID=-4.1A | 2 | |
| Drain-Source On-State Resistance | RDS(ON) | 58 | 75 | mΩ | VGS=-2.5V, ID=-3A | 2 | |
| Forward Transconductance | gFS | 6 | S | VDS=-5V,ID=-2A | 2 | ||
| Diode Forward Voltage | VSD | -1.2 | V | VGS=0V,IS=-4.1A | 2 | ||
| Diode Forward Current | IS | -4.1 | A | 2 | |||
| Input Capacitance | Clss | 740 | PF | VDS=-4V,VGS=0V,F=1.0MHz | 2 | ||
| Output Capacitance | Coss | 290 | PF | VDS=-4V,VGS=0V,F=1.0MHz | 2 | ||
| Reverse Transfer Capacitance | Crss | 190 | PF | VDS=-4V,VGS=0V,F=1.0MHz | 2 | ||
| Turn-on Delay Time | td(on) | 12 | nS | VDD=-4V,ID=-3.3A,RL=-1.2Ω,VGEN=-4.5V,Rg=1Ω | 2 | ||
| Turn-on Rise Time | tr | 35 | nS | VDD=-4V,ID=-3.3A,RL=-1.2Ω,VGEN=-4.5V,Rg=1Ω | 2 | ||
| Turn-Off Delay Time | td(off) | 30 | nS | VDD=-4V,ID=-3.3A,RL=-1.2Ω,VGEN=-4.5V,Rg=1Ω | 2 | ||
| Turn-Off Fall Time | tf | 10 | nS | VDD=-4V,ID=-3.3A,RL=-1.2Ω,VGEN=-4.5V,Rg=1Ω | 2 | ||
| Total Gate Charge | Qg | 7.8 | nC | VDS=-4V,ID=-4.1A,VGS=-4.5V | 2 | ||
| Gate-Source Charge | Qgs | 1.2 | nC | VDS=-4V,ID=-4.1A,VGS=-4.5V | 2 | ||
| Gate-Drain Charge | Qgd | 1.6 | nC | VDS=-4V,ID=-4.1A,VGS=-4.5V | 2 |
CAD (KiCad official)
- Symbol:
BLM2305 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
blm2305-etched.step/blm2305-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);blm2305.step/blm2305.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL(Shanghai Belling) datasheet (6 pp, sha256
3f755a3ac4e49fac, retrieved 2026-10-22, 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).