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BAS521-QX High-voltage switching diode from Nexperia, rated for 300V reverse voltage and 250mA forward current. Features fast reverse recovery time of 50ns max in an ultra-small SOD523 surface-mount package.
Mfr Part #:

BAS521-QX

Available from 2 distributors
Mfr Name: Nexperia USA Inc.
Nexperia USA Inc.
High-voltage switching diode from Nexperia, rated for 300V reverse voltage and 250mA forward current. Features fast reverse recovery time of 50ns max in an ultra-small SOD523 surface-mount package.
Total Stock: 1,765,020 pcs
$ Price Range: $0.06 - $0.31

BAS521-QX Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
1,702,020 pcs
1702020 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
63,000 pcs
63000 pcs On Request 1 On Request On Request On Request On Request On Request

BAS521-QX Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Capacitance
Capacitance @ Vr, F
Current
Lead Style
Mounting Type
Non-repetitive Peak Forward Current
Number of Leads
Operating Temperature
Operating Temperature (Ambient)
Repetitive Peak Forward Current
Repetitive Peak Reverse Voltage
Reverse Recovery Time (trr)
Reverse Voltage
SVHC Present
Speed
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Termination Style
Thermal Resistance (junction to solder point)
Thermal Resistance Junction-to-Ambient
Total Power Dissipation
Voltage

BAS521-QX Description

Short technical summary and product information.

The BAS521-QX is a high-voltage switching diode from Nexperia, designed for applications requiring fast switching and high reverse voltage capability. It is rated for a repetitive peak reverse voltage of 300V and a forward current of 250mA. The diode features a fast reverse recovery time of typically 16ns and maximum 50ns, making it suitable for high-speed switching circuits. The device is qualified to AEC-Q101 and recommended for automotive applications. It is encapsulated in an ultra-small SOD523 (SC-79) flat lead surface-mount package, ideal for space-constrained designs. Key electrical characteristics include a forward voltage of 0.95V typical at 100mA, and a low capacitance of 0.4pF. The diode can handle non-repetitive peak forward current up to 4.5A. With a junction temperature range of -65°C to 150°C, it is robust for various environments.

BAS521-QX Quick Information

Product Type: High-Voltage Switching Diode
Series: BAS521
Canonical Name: High-Voltage Switching Diode, 300V, 250mA, SOD523
Subcategory: Rectifiers - Single

BAS521-QX Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BAS521-QX Estimated Pricing

Qty Low High
1+ $0.31 $0.31
10+ $0.18 $0.18
100+ $0.11 $0.11
500+ $0.08 $0.08
1,000+ $0.07 $0.07
3,000+ $0.06 $0.06

Estimated market price range - modelled values for guidance only, not live distributor offers.

BAS521-QX Features

  • High reverse voltage rating of 300V.
  • Fast reverse recovery time ≤50ns.
  • Ultra-small SOD523 surface-mount package.
  • Qualified to AEC-Q101 for automotive.
  • Low capacitance of 0.4pF.

BAS521-QX Applications

  • High-speed switching circuits.
  • High-voltage switching applications.
  • Automotive electronic modules.
  • General purpose rectification.

BAS521-QX FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum reverse voltage?

300V.

What is the maximum forward current?

250mA.

What is the forward voltage?

0.95V typical, 1.1V maximum at 100mA.

What is the reverse recovery time?

16ns typical, 50ns maximum.

What package is this diode available in?

SC-79 (SOD523) surface-mount package.

Is this diode qualified for automotive applications?

Yes, it is qualified to AEC-Q101.

What is the operating temperature range?

-65°C to 150°C junction temperature.

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