BYW178-TAP The BYW178-TAP is a fast avalanche sinterglass diode from Vishay, rated for 800V reverse voltage and 3A average forward current. It comes in a hermetically sealed SOD-64 axial package.
Mfr Part #:

BYW178-TAP

Available from 1 distributors
Mfr Name: Vishay Dale
Vishay Dale
The BYW178-TAP is a fast avalanche sinterglass diode from Vishay, rated for 800V reverse voltage and 3A average forward current. It comes in a hermetically sealed SOD-64 axial package.
Total Stock: 11,757 pcs
$ Price Range: $1.34

BYW178-TAP Available from 1 distributor

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BYW178-TAP Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Lead Style
Mounting Type
Non Repetitive Reverse Avalanche Energy (ER)
Operating Temperature
Packaging Type
Peak Forward Surge Current (Ifsm)
Repetitive Peak Forward Current (IFRM)
Reverse Current (Maximum @ VR=VRRM, TJ=100 °C)
Reverse Current (Maximum @ VR=VRRM, Tamb=25 °C)
Reverse Recovery Time (trr)
Reverse Voltage (Vrrm)
Speed
Standard Package Quantity
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Termination Style
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Voltage

BYW178-TAP Description

Short technical summary and product information.

The BYW178-TAP is a fast avalanche sinterglass diode manufactured by Vishay. It is designed for high-efficiency rectification in switching power supplies and other power conversion applications. The diode features a maximum repetitive peak reverse voltage (VRRM) of 800V and an average forward current (IF(AV)) of 3A. Its forward voltage is typically 1.9V at 3A, and it offers a fast reverse recovery time of 60ns, enabling high-frequency operation.

 

The device is built with a glass passivated junction and is hermetically sealed in a SOD-64 axial leaded package, ensuring reliability in harsh environments. It can handle peak forward surge currents up to 80A and has a non-repetitive reverse avalanche energy rating of 20mJ. Thermal resistance is 25 K/W junction-to-lead and 70 K/W junction-to-ambient, allowing efficient heat dissipation.

 

Typical applications include ultrafast rectification in switch-mode power supplies, freewheeling diodes, snubber circuits, and power factor correction. The BYW178-TAP is available in ammopack packaging with 2500 units per pack.

BYW178-TAP Quick Information

Product Type: Avalanche Rectifier Diode
Canonical Name: Vishay BYW178-TAP Fast Avalanche Sinterglass Diode
Subcategory: Rectifier - Single

BYW178-TAP Compliance

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

BYW178-TAP Estimated Pricing

Qty Low High
12,500+ $1.34 $1.34

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

BYW178-TAP Features

  • Fast avalanche sinterglass diode.
  • Rated for 800V reverse voltage.
  • 3A average forward current.
  • Very fast reverse recovery time.
  • Hermetically sealed SOD-64 package.

BYW178-TAP Applications

  • Ultrafast rectification in switching power supplies.
  • Used in high-frequency rectifier circuits.
  • Suitable for freewheeling and snubber applications.
  • Ideal for power factor correction circuits.

BYW178-TAP FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse voltage rating of the BYW178-TAP?

The maximum repetitive peak reverse voltage (VRRM) is 800V.

What is the average forward current rating?

The average forward current (IF(AV)) is 3A.

What is the forward voltage drop?

The maximum forward voltage is 1.9V at a forward current of 3A.

What is the reverse recovery time?

The reverse recovery time (trr) is 60ns.

What package does the BYW178-TAP come in?

It comes in a SOD-64 axial leaded package.

What is the peak forward surge current capability?

The peak forward surge current (IFSM) is 80A for a 10ms half sine wave.

What is the operating temperature range?

The junction and storage temperature range is -55°C to 175°C.

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