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Click here for more informationHigh-voltage switching diode
High-voltage switching diode encapsulated in a small SOT23 Surface-Mounted Device (SMD) plastic package.
High switching speed: trr ≤ 50 ns
Low leakage current
Reverse voltage VR ≤ 200 V
Low capacitance: Cd ≤ 5 pF
Small SMD plastic package
Qualified according to AEC-Q101 and recommended for use in automotive applications
High-speed switching at high voltage
High-voltage general-purpose switching
Voltage clamping
Reverse polarity protection
| Type number | Package version | Package name | Size (mm) | VR [max] (V) | IFSM [max] (A) | VF [max] (mV) | IR [max] (nA) | IFRM (mA) | Configuration | trr [max] (ns) | IF [max] (mA) | Cd [max] (pF) | Automotive qualified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BAS21-Q | SOT23 | SOT23 | 2.9 x 1.3 x 1 | 200 | 9 | 1000@IF=100mA | 100@VR=200V | 625 | single | 50 | 200 | 5 | Y |
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| BAS21-Q | BAS21-QAZ (934663621185) |
Active | JS% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
SOT23_185 |
| BAS21-QR (934663621215) |
Active | JS% | SOT23_215 | ||||
| BAS21-QVL (934663621235) |
Active | JS% | SOT23_235 |
All type numbers in the table below are discontinued.
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| BAS21-Q | BAS21-QZ (934663621300) |
Withdrawn / End-of-life | JS% |
(SOT23) |
SOT23 |
REFLOW_BG-BD-1
WAVE_BG-BD-1 |
Not available |
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| BAS21-Q | BAS21-QAZ | BAS21-Q |
|
|
| BAS21-Q | BAS21-QR | BAS21-Q |
|
|
| BAS21-Q | BAS21-QVL | BAS21-Q |
|
|
All type numbers in the table below are discontinued.
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| BAS21-Q | BAS21-QZ | BAS21-Q |
|
|
| File name | Title | Type | Date |
|---|---|---|---|
| BAS21-Q | High-voltage switching diode | Data sheet | 2021-06-02 |
| AN90063 | Questions about package outline drawings | Application note | 2025-10-22 |
| SOT23 | 3D model for products with SOT23 package | Design support | 2019-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SOT23_mk | plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body | Marcom graphics | 2017-01-28 |
| SOT23 | plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm body | Package information | 2022-10-12 |
| SOT23_185 | Reel pack for SMD, 7"; Q3/T4 product orientation | Packing information | 2020-06-01 |
| SOT23_215 | Reel pack for SMD, 7"; Q3/T4 product orientation | Packing information | 2025-01-20 |
| SOT23_235 | Reel pack for SMD, 11"; Q3/T4 product orientation | Packing information | 2020-06-01 |
| BAS21-Q_Nexperia_Product_Reliability | BAS21-Q Nexperia Product Reliability | Quality document | 2025-05-28 |
| REFLOW_BG-BD-1 | Reflow soldering profile | Reflow soldering | 2021-04-06 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
If you are in need of design/technical support, let us know and fill in the answer form we'll get back to you shortly.
The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.
| File name | Title | Type | Date |
|---|---|---|---|
| SOT23 | 3D model for products with SOT23 package | Design support | 2019-01-22 |
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The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.
