component
BAS21HE3-TP
Public Made by Adomby adom
MCC Micro Commercial Components Switching Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBAS21HE3-TP
MCC Micro Commercial Components · Switching Diodes · SOT-23
BAS21HE3-TP from MCC Micro Commercial Components, 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 | A | passive | Anode of the single diode, per the internal structure drawing on page 1; BAS21HE3 is rated for 250V repetitive peak reverse voltage and 250V continuous reverse voltage. |
| 2 | NC | unconnected | Pin 2 is shown in the internal structure drawing with no connection to the diode, so it is not connected internally. |
| 3 | K | passive | Cathode of the single diode, per the internal structure drawing on page 1; forward current is rated at 400mA DC (IFM) and 225mA average rectified (IF(AV)). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| Package | SOT-23 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous Reverse Voltage (BAS21HE3) | VR | 250 | V | 1 | |||
| Repetitive Peak Reverse Voltage (BAS21HE3) | VRRM | 250 | V | 1 | |||
| Average Rectified Forward Current | IF(AV) | 225 | mA | 1 | |||
| Forward DC Current | IFM | 400 | mA | 1 | |||
| Non-Repetitive Peak Forward Surge Current | IFSM | 9 | A | t=1us | 1 | ||
| Non-Repetitive Peak Forward Surge Current | IFSM | 0.5 | A | t=1s | 1 | ||
| Repetitive Peak Forward Current | IFRM | 625 | mA | 1 | |||
| Power Dissipation | PTOT | 350 | mW | TA=25℃ (Note 2) | 1 | ||
| Operating Junction Temperature Range | TJ | -65 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction to Ambient | RθJA | 357 | °C/W | Note 2: mounted on FR-4 board with recommended pad layout | 1 | ||
| Forward Voltage | VF | 1 | V | IF=100mA | 2 | ||
| Forward Voltage | VF | 1.25 | V | IF=200mA | 2 | ||
| Reverse Current | IR | 100 | nA | VR=VRmax | 2 | ||
| Reverse Current | IR | 100 | μA | VR=VRmax, TJ=150°C | 2 | ||
| Dynamic Forward Resistance | rf | 5 | Ω | IF=100mA | 2 | ||
| Junction Capacitance | CJ | 5 | pF | VR = 0V, f = 1MHz | 2 | ||
| Reverse Recovery Time | trr | 50 | ns | IF=IR=30mA, Irr=0.1×IR, RL=100Ω | 2 |
CAD (KiCad official)
- Symbol:
BAS21HE3-TP - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bas21he3-tp-etched.step/bas21he3-tp-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bas21he3-tp.step/bas21he3-tp.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MCC Micro Commercial Components datasheet (4 pp, sha256
6cc69218c2c9db73, 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).