BAS21 BAS21 is a 200V, 200mA small signal switching diode from On Semiconductor. It features a maximum forward voltage of 1.25V at 200mA and a reverse recovery time of 50ns, housed in a SOT-23 surface mount package.
Mfr Part #:

BAS21

Available from 4 distributors
Mfr Name: On Semiconductor
On Semiconductor
BAS21 is a 200V, 200mA small signal switching diode from On Semiconductor. It features a maximum forward voltage of 1.25V at 200mA and a reverse recovery time of 50ns, housed in a SOT-23 surface mount package.
Total Stock: 4,940 pcs
$ Price Range: $0.02 - $0.15

BAS21 Available from 4 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,725 pcs
2725 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1,910 pcs
1910 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
250 pcs
$0.05
Qty Price
0+ 0.05
250 pcs $0.05
QtyPrice
0+ 0.05
1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
55 pcs
55 pcs On Request 1 On Request On Request 15+ On Request On Request

BAS21 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Average Forward Current
Capacitance @ Vr, F
Conflict Minerals
Current
Forward Voltage (Maximum @ I_F = 100 mA)
Forward Voltage (Maximum @ I_F = 200 mA)
Industrial Grade
Junction Capacitance
Junction Temperature
Leakage Current (Maximum @ T_j = 150 °C, V_R = V_RRM)
Leakage Current (Maximum @ T_j = 25 °C, V_R = V_RRM)
Mounting Type
Non-Repetitive Peak Forward Surge Current
Operating Temperature
Operating Temperature Range
Package / Case
Power Dissipation
Reel Diameter
Repetitive Peak Forward Current
Repetitive Peak Reverse Voltage
Reverse Breakdown Voltage
Reverse Recovery Time
Reverse Recovery Time (trr)
Reverse Voltage
Speed
Standard Package Quantity
Storage Temperature
Supplier Device Package
Technology
Thermal Resistance
Voltage

BAS21 Description

Short technical summary and product information.

The BAS21 is a high-speed switching diode designed for general purpose rectification and signal processing. With a repetitive peak reverse voltage of 250V and a continuous reverse voltage of 200V, it is suitable for applications requiring up to 200V blocking. The diode can handle an average forward current of 200mA and a repetitive peak forward current of 625mA.

 

Key electrical characteristics include a maximum forward voltage of 1.25V at 200mA and a low reverse recovery time of 50ns at test conditions (IF=10mA, IR=10mA to 1mA). The junction capacitance is typically 5pF at 0V bias, enabling high-speed switching. Leakage current is 100nA at room temperature and 100µA at 150°C junction temperature. The device is rated for a power dissipation of 250mW.

 

The BAS21 is offered in the standard SOT-23 surface mount package (also known as TO-236-3, SC-59). It is supplied in tape and reel packaging with 3000 units per reel. The operating temperature range is -55°C to 150°C, and the device is RoHS compliant and lead-free. It is also available in AEC-Q101 qualified versions (suffix -Q/-AQ) for automotive applications.

 

Typical applications include signal processing, high-speed switching, and rectification in commercial and industrial grade equipment. The device is also suitable for use in automotive electronics when using the -Q/-AQ variants.

BAS21 Quick Information

Product Type: Small Signal Switching Diode
Series: BAS21
Canonical Name: BAS21 - 200V, 200mA Small Signal Switching Diode, SOT-23
Subcategory: Single Rectifier Diode

BAS21 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): Level 1
REACH Status: Compliant
Lead Free: Lead Free (RoHS compliant without exemptions)

BAS21 Estimated Pricing

Qty Low High
1+ $0.15 $0.15
10+ $0.09 $0.09
100+ $0.06 $0.06
500+ $0.04 $0.04
1,000+ $0.04 $0.04
3,000+ $0.03 $0.03
6,000+ $0.03 $0.03
9,000+ $0.02 $0.02
15,000+ $0.02 $0.02
21,000+ $0.02 $0.02
30,000+ $0.02 $0.02

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

BAS21 Features

  • 200V repetitive peak reverse voltage
  • 200mA average forward current rating
  • 50ns reverse recovery time
  • Low junction capacitance of 5pF
  • Surface mount SOT-23 package

BAS21 Applications

  • Signal processing and high-speed switching
  • Rectification in power supplies
  • Automotive electronics with AEC-Q101 variants
  • General purpose diode applications

BAS21 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum repetitive peak reverse voltage of the BAS21?

250V.

What is the average forward current rating?

200mA.

What is the forward voltage drop?

1.25V max at 200mA and 1.0V max at 100mA.

What is the reverse recovery time?

50ns max under test conditions (IF=10mA, IR=10mA to 1mA).

What package is the BAS21 available in?

SOT-23 (TO-236-3, SC-59).

What is the operating temperature range?

-55°C to 150°C.

Is the BAS21 RoHS compliant?

Yes, RoHS compliant without exemptions.

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