Orderable parts
| Type number | Orderable part number | Ordering code (12NC) | Package | Buy from distributors |
|---|---|---|---|---|
| BAS521B | BAS521BX | 934660344115 | SOD523 | Order product |
| BAS521B | BAS521BF | 934660344135 | SOD523 | Order product |
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Click here for more informationBAS521B
High-voltage switching diode
High-voltage switching diode in an ultra small SOD523 (SC-72) flat lead Surface-Mounted Device (SMD) plastic package.
Features and benefits
High switching speed: trr ≤ 50 ns
Low leakage current: IR ≤ 100 nA
High reverse voltage: VR ≤ 200 V
Low capacitance: Cd ≤ 2 pF
Ultra small and leadless SMD plastic package
Applications
High-speed switching
General-purpose switching
Voltage clamping
Reverse polarity protection
Parametrics
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BAS521B | SOD523 | SC-79 | 1.2 x 0.8 x 0.6 | 200 | 9.4 | 1250@IF=200mA | 100@VR=200V | 625 | single | 50 | 250 | 2 | N |
Package
| Type number | Orderable part number, (Ordering code (12NC)) | Status | Marking | Package | Package information | Reflow-/Wave soldering | Packing |
|---|---|---|---|---|---|---|---|
| BAS521B | BAS521BX (934660344115) |
Active | S2 |
SC-79 (SOD523) |
SOD523 |
REFLOW_BG-BD-1
|
SOD523_115 |
| BAS521BF (934660344135) |
Active | S2 | SOD523_135 |
Environmental information
| Type number | Orderable part number | Chemical content | RoHS | RHF-indicator |
|---|---|---|---|---|
| BAS521B | BAS521BX | BAS521B |
|
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| BAS521B | BAS521BF | BAS521B |
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Documentation (12)
| File name | Title | Type | Date |
|---|---|---|---|
| BAS521B | High-voltage switching diode | Data sheet | 2018-06-29 |
| AN90063 | Questions about package outline drawings | Application note | 2025-03-12 |
| Nexperia_document_brochure_ESD-Protection-Applications_022017 | ESD Protection Application guide | Brochure | 2018-12-21 |
| SOD523 | 3D model for products with SOD523 package | Design support | 2019-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SOD523_mk | plastic, surface-mounted package; 2 leads; 1.2 mm x 0.8 mm x 0.6 mm body | Marcom graphics | 2017-01-28 |
| SOD523 | plastic, surface-mounted package; 2 leads; 1.2 mm x 0.8 mm x 0.6 mm body | Package information | 2022-05-27 |
| SOD523_115 | Reel pack for SMD, 7''; Q1/T1-Q2/T3 product orientation | Packing information | 2021-02-05 |
| SOD523_135 | Reel pack for SMD, 11''; Q1/T1-Q2/T3 product orientation | Packing information | 2021-02-05 |
| BAS521B_Nexperia_Product_Reliability | BAS521B Nexperia Product Reliability | Quality document | 2024-04-22 |
| REFLOW_BG-BD-1 | Reflow soldering profile | Reflow soldering | 2021-04-06 |
| BAS521B | BAS521B SPICE model | SPICE model | 2018-05-25 |
Support
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.
Longevity
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.
Ordering, pricing & availability
| Type number | Orderable part number | Ordering code (12NC) | Status | Packing | Packing Quantity | Buy online |
|---|---|---|---|---|---|---|
| BAS521B | BAS521BX | 934660344115 | Active | SOD523_115 | 3,000 |
|
| BAS521B | BAS521BF | 934660344135 | Active | SOD523_135 | 10,000 |
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Sample
As a Nexperia customer you can order samples via our sales organization.
If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples. Check out the list of official distributors.
How does it work?
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.