BZW04-48B STMicroelectronics BZW04-48B is a 400W unidirectional TVS diode with 47.8V stand-off voltage and 77V clamping voltage in a DO-15 through-hole package.
Mfr Part #:

BZW04-48B

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
STMicroelectronics BZW04-48B is a 400W unidirectional TVS diode with 47.8V stand-off voltage and 77V clamping voltage in a DO-15 through-hole package.
Total Stock: 25,000 pcs

BZW04-48B Available from 1 distributor

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BZW04-48B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Bidirectional Channels
C (Nominal @ 1 MHz)
Capacitance @ Frequency
Current
I_PP (Nominal @ 10/1000 µs waveform)
I_PP (Nominal @ 8/20 µs waveform)
Junction Temperature Range
Lead Soldering Temperature
Lead Style
Mounting Type
Package / Case
Peak Pulse Power
Power
Power Dissipation
Power Line Protection
Reverse Leakage Current
Stand-off Voltage
Storage Temperature
Supplier Device Package
Tape & Reel
Technology
Temperature Coefficient
Termination Style
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Type
V_CL (Maximum @ 10/1000 µs waveform)
V_CL (Maximum @ 8/20 µs waveform)
Voltage

BZW04-48B Description

Short technical summary and product information.

The STMicroelectronics BZW04-48B is a 400W transient voltage suppression (TVS) diode designed to protect sensitive electronics from overvoltage transients. It features a stand-off voltage of 47.8V and a maximum clamping voltage of 77V under a 10/1000µs waveform, with a peak pulse current rating of 5.2A. For faster 8/20µs surges, the clamping voltage is 100V and peak pulse current reaches 23A.

 

This Zener-based TVS diode offers a fast response time and a low clamping factor, making it suitable for general-purpose overvoltage protection. The device is unidirectional with a single bidirectional channel and is not intended for power line protection. It operates over a junction temperature range of -65°C to 175°C and can dissipate up to 1.7W on an infinite heatsink at 75°C ambient.

 

The BZW04-48B is housed in a DO-15 (DO-204AC) axial-lead through-hole package, suitable for manual or wave soldering with a maximum lead temperature of 230°C for 10 seconds. Typical capacitance is 320pF at 1MHz. The device is UL recognized.

BZW04-48B Quick Information

Product Type: TVS Diode
Series: BZW04-xx
Canonical Name: STMicroelectronics BZW04-48B TVS Diode, 400W, 47.8V Stand-off, DO-15
Subcategory: TVS Diode

BZW04-48B Compliance

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

BZW04-48B Features

  • 400W peak pulse power dissipation.
  • 47.8V stand-off voltage rating.
  • 77V clamping voltage at 5.2A.
  • DO-15 through-hole axial package.
  • Fast response transient protection.

BZW04-48B Applications

  • Protects sensitive ICs from voltage transients.
  • Used in low-voltage DC supply lines.
  • Suitable for telecom and industrial equipment.
  • Ideal for automotive electronics protection.

BZW04-48B FAQs

5 frequently asked questions generated from this part’s specifications.
What is the stand-off voltage of the BZW04-48B?

The stand-off voltage (V_RWM) is 47.8V.

What is the clamping voltage of this TVS diode?

The maximum clamping voltage is 77V for a 10/1000µs waveform and 100V for an 8/20µs waveform.

What is the peak pulse current rating?

The peak pulse current is 5.2A for a 10/1000µs waveform and 23A for an 8/20µs waveform.

What package does the BZW04-48B come in?

It is available in a DO-15 (DO-204AC) axial-lead through-hole package.

What is the operating junction temperature range?

The junction temperature range is -65°C to 175°C.

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