BAS521BF High-voltage switching diode from Nexperia, rated for 250V reverse voltage and 250mA forward current. Features fast 50ns reverse recovery time and low leakage current.
Mfr Part #:

BAS521BF

Available from 2 distributors
Mfr Name: Nexperia USA Inc.
Nexperia USA Inc.
High-voltage switching diode from Nexperia, rated for 250V reverse voltage and 250mA forward current. Features fast 50ns reverse recovery time and low leakage current.
Total Stock: 51,020 pcs
$ Price Range: $0.04

BAS521BF 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
40,000 pcs
40000 pcs On Request 1 On Request On Request 2037 On Request On Request
Non-Authorised Inventory information
11,020 pcs
11020 pcs On Request 1 On Request On Request On Request On Request On Request

BAS521BF Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Capacitance @ Vr, F
Current
Junction Temperature
Mounting Type
Operating Temperature
Operating Temperature Range
Ptot (Maximum @ Tamb ≤ 25 °C, FR 4 PCB standard footprint)
Ptot (Maximum @ Tamb ≤ 25 °C, FR 4 PCB with 1 cm² pad for cathode)
Qualification
Repetitive Peak Reverse Voltage
Reverse Leakage Current
Reverse Recovery Time (trr)
Reverse Voltage
Rth(j-a) (Maximum @ FR 4 PCB standard footprint, in free air)
Rth(j-a) (Maximum @ FR 4 PCB with 1 cm² pad for cathode, in free air)
Speed
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Voltage

BAS521BF Description

Short technical summary and product information.

The BAS521BF is a high-voltage switching diode from Nexperia USA Inc., designed for high-speed switching applications. It is AEC-Q101 qualified for automotive use and comes in an ultra-small SOD523 (SC-79) surface-mount package.

 

Key electrical characteristics include a maximum reverse voltage of 200V (250V repetitive peak), forward current of 250mA, and a forward voltage of 1.25V at 200mA. The diode offers a fast reverse recovery time of 50ns, low leakage current of 100nA at 200V, and low diode capacitance of 2pF.

 

The device is suitable for high-speed switching, general-purpose switching, voltage clamping, and reverse polarity protection. It is mounted on an FR4 PCB with standard footprint for optimal thermal performance, with a maximum power dissipation of 250mW (standard footprint) or 380mW with a 1cm² cathode pad.

 

The SOD523 package is ultra-small and leadless, with dimensions 1.2mm x 0.8mm x 0.6mm body. The marking code is S2. The device is RoHS3 compliant and has an MSL of 1 (unlimited).

BAS521BF Quick Information

Product Type: High-Voltage Switching Diode
Canonical Name: BAS521BF High-Voltage Switching Diode
Subcategory: Switching Diode

BAS521BF Compliance

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

BAS521BF Estimated Pricing

Qty Low High
10,000+ $0.04 $0.04

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

BAS521BF Features

  • High reverse voltage rating of 200V.
  • Fast reverse recovery time of 50ns.
  • Low leakage current of 100nA.
  • Ultra-small SOD523 surface-mount package.
  • AEC-Q101 qualified for automotive use.

BAS521BF Applications

  • High-speed switching in automotive circuits.
  • General-purpose switching applications.
  • Voltage clamping and protection circuits.
  • Reverse polarity protection in portable devices.

BAS521BF FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum reverse voltage of the BAS521BF?

The maximum reverse voltage is 200V, with a repetitive peak reverse voltage of 250V.

What is the maximum forward current?

The maximum forward current is 250mA at 25°C ambient on a standard FR4 PCB.

What is the forward voltage at 200mA?

The forward voltage is typically 1.25V at 200mA, with a test condition of tp ≤ 300µs and δ ≤ 0.02 at 25°C.

What is the reverse recovery time?

The reverse recovery time is 50ns maximum, tested at IF=30mA, IR=30mA, RL=100Ω.

What package is the BAS521BF available in?

It is available in an ultra-small SOD523 (SC-79) surface-mount package.

What is the reverse leakage current?

The reverse leakage current is 100nA maximum at 200V reverse voltage, pulsed, at 25°C.

What is the diode capacitance?

The diode capacitance is typically 2pF at 0V reverse bias and 1MHz.

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