Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

BAS521B

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 SOD523
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 rohs rhf rhf
BAS521B BAS521BF BAS521B rohs rhf rhf
Quality and reliability disclaimer

Documentation (11)

File name Title Type Date
BAS521B High-voltage switching diode Data sheet 2018-06-29
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.

Models

File name Title Type Date
BAS521B BAS521B SPICE model SPICE model 2018-05-25
SOD523 3D model for products with SOD523 package Design support 2019-01-22

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 Order product
BAS521B BAS521BF 934660344135 Active SOD523_135 10,000 Order product

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.

Interactive datasheet

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