BAS21-E3-18 High-voltage fast switching diode in SOT-23-3 package. Offers 200V continuous reverse voltage, 250 mA average forward rectified current, and 50 ns reverse recovery time.
Mfr Part #:

BAS21-E3-18

Available from 1 distributors
Mfr Name: Vishay Dale
Vishay Dale
High-voltage fast switching diode in SOT-23-3 package. Offers 200V continuous reverse voltage, 250 mA average forward rectified current, and 50 ns reverse recovery time.
Total Stock: 31,020 pcs
$ Price Range: $0.06 - $0.36

BAS21-E3-18 Available from 1 distributor

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Non-Authorised
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BAS21-E3-18 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Average Forward Rectified Current
Capacitance @ Vr, F
Continuous Reverse Voltage
Current
DC Forward Current
Industrial Grade
Junction Temperature
Lead Spacing
Lead Style
Medical Grade
Military Grade
Molding Compound Flammability Rating
Mounting Type
Non-Repetitive Peak Forward Surge Current (Maximum @ t = 1 µs)
Operating Temperature
Package Weight
Packaging Code
Peak Soldering Temperature
Power Dissipation (Maximum @ Infinite heatsink)
Power Dissipation (Maximum @ On FR -4 board with recommended soldering footprint)
Reel Quantity
Repetitive Peak Forward Current
Repetitive Peak Reverse Voltage
Reverse Recovery Time (trr)
Speed
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Voltage

BAS21-E3-18 Description

Short technical summary and product information.

The BAS21-E3-18 is a small-signal high-voltage switching diode from Vishay Semiconductors. It is designed for applications requiring fast switching with a maximum reverse recovery time of 50 ns. The diode supports a continuous reverse voltage of 200 V, repetitive peak reverse voltage of 250 V, and an average forward rectified current of 250 mA at frequencies above 50 Hz.

 

Electrical characteristics include a maximum forward voltage of 1.25 V at 200 mA, DC forward current of 350 mA, and non-repetitive peak forward surge current of 2.5 A for 1 µs or 0.5 A for 1 s. Power dissipation is rated at 300 mW on an FR-4 board with recommended soldering footprint and 500 mW with an infinite heatsink. Thermal resistance junction-to-ambient is 420 K/W on FR-4, and junction-to-lead is 250 K/W with infinite heatsink.

 

The device is housed in a TO-236-3 / SC-59 / SOT-23-3 surface-mount package with a weight of approximately 9.2 mg. The molding compound is rated UL 94 V-0, and the peak soldering temperature is 260 °C. Packaging code 18 provides 10,000 units per 13-inch reel with 8 mm tape. Operating temperature range is -55 °C to +150 °C with maximum junction temperature 150 °C.

BAS21-E3-18 Quick Information

Product Type: Small Signal Switching Diode
Series: BAS21
Canonical Name: Vishay BAS21-E3-18 High-Voltage Fast Switching Diode
Subcategory: Rectifiers - Single

BAS21-E3-18 Compliance

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

BAS21-E3-18 Estimated Pricing

Qty Low High
1+ $0.36 $0.36
10+ $0.22 $0.22
50+ $0.16 $0.16
100+ $0.14 $0.14
500+ $0.10 $0.10
10,000+ $0.06 $0.06
30,000+ $0.06 $0.06

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

BAS21-E3-18 Features

  • High-voltage switching diode with 200 V rating.
  • Fast reverse recovery time of 50 ns.
  • Available in surface-mount SOT-23-3 package.
  • Rated for 250 mA average forward rectified current.
  • Operating temperature range -55°C to 150°C.

BAS21-E3-18 Applications

  • High-voltage fast switching in power supplies.
  • Suitable for reverse polarity protection circuits.
  • Used in signal clamping and waveform shaping.
  • Ideal for high-density surface-mount PCB designs.

BAS21-E3-18 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum continuous reverse voltage of the BAS21-E3-18?

The maximum continuous reverse voltage is 200 V; repetitive peak reverse voltage is 250 V.

What is the forward current rating for the BAS21-E3-18?

Average forward rectified current is 250 mA (at f ≥ 50 Hz), with 350 mA DC forward current and 625 mA repetitive peak forward current.

What is the forward voltage drop at typical operating current?

Maximum forward voltage is 1.25 V at 200 mA.

How fast does the diode recover in reverse direction?

Reverse recovery time is 50 ns.

What package is the BAS21-E3-18 available in?

Surface-mount TO-236-3 / SC-59 / SOT-23-3 package; supplier device package is SOT-23-3. Molding compound flammability rating is UL 94 V-0, peak soldering temperature 260 °C, and package weight about 9.2 mg.

How much power can the BAS21-E3-18 dissipate?

Maximum power dissipation is 300 mW on FR-4 board with recommended soldering footprint, and 500 mW with infinite heatsink. Thermal resistance junction-to-ambient is 420 K/W on FR-4; junction-to-lead is 250 K/W with infinite heatsink.

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