STMicroelectronics BZW50-180

Mfr. Part

BZW50-180

Manufacturer

STMicroelectronics

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Detailed Description

Unidirectional 5 kW TVS diode for surge protection on high-voltage DC lines

Working reverse voltage 180 V, minimum breakdown 200 V, maximum clamp 410 V at specified surge

Series BZW50 TRANSIL, Zener-type TVS, single channel

Through-hole R-6 axial package, general-purpose use

Capacitance 1500 pF at 1 MHz

RoHS3 compliant

Available quantity: 2502 units (packaged as Cut Tape)

Key Features

5 kW peak pulse power rating on 10/1000 µs surge waveform

Peak pulse current 146 A on 8/20 µs surge waveform

Single unidirectional protection channel

Fast response against ESD and surge events

Robust R-6 axial construction for high energy absorption

General-purpose application range

RoHS3 compliant and lead-free finish

Key Advantages

High energy handling protects sensitive circuits on 120 VAC rectified or ~150–170 V DC rails

Simple series family selection and drop-in replacement within BZW50 range

Through-hole axial leads simplify mechanical mounting and field service

Stable clamping behavior limits overvoltage stress to connected loads

Broad industry adoption with wide availability and second-source options

Packaging

Type: R-6 axial through-hole (also known as P600 class)

Delivery form: Cut Tape (CT)

Materials: epoxy-molded body, tin-plated copper leads

Size: industry-standard R-6 axial dimensions (typical P600-class body about 9–10 mm length and ~9 mm diameter, lead diameter about 1.2 mm; check datasheet for exact values)

Pin configuration: 2 leads, unidirectional polarity; cathode identified by band; observe orientation in circuit

Thermal characteristics: 5 kW non-repetitive surge rating on 10/1000 µs waveform; derating with temperature applies; use short leads and good copper area for heat spreading; see datasheet for thermal resistance and maximum junction temperature

Electrical properties summary: VRWM 180 V, VBR ≥ 200 V, VCL max 410 V at specified surge current, IPP 146 A on 8/20 µs, capacitance 1500 pF at 1 MHz, unidirectional, power line protection not intended

Lifecycle

Current status: widely used BZW50 TRANSIL family with continuing market availability based on public information

Not announced as near end-of-life to our knowledge. For latest status, contact Y-IC sales

Equivalent or alternative models (verify all parameters, polarity, waveform rating, and package before use):

- STMicroelectronics BZW50-180B (bidirectional alternative within same series)

- Vishay 5KP180A (5 kW, R-6/P600 axial, unidirectional)

- Littelfuse 5KP180A (5 kW, P600 axial, unidirectional)

- Bourns 5KP180A (5 kW, P600 axial, unidirectional)

- Taiwan Semiconductor 5KP180A (5 kW, P600 axial, unidirectional)

- Diodes Incorporated D5KE180A (5 kW class, axial, unidirectional)

If you need a drop-in or higher-reliability substitute, or if your compliance requirements are strict, please contact our sales team via the Y-IC website for tailored recommendations

Key Application Areas

Surge protection on 120 VAC rectified DC bus (~170 V DC)

Input and output protection for industrial power supplies and SMPS stages around 150–180 V DC

Motor drives, HVAC controls, vending, appliances operating from 120 VAC lines

UPS, inverters, and battery chargers in 120 VAC regions

Protection of high-voltage I/O, relays, solenoids, contactor coils, and long cable runs exposed to surges

Compliance support for surge immunity standards such as IEC 61000-4-5 (select rating to match your surge level)

Datasheet

The most authoritative datasheet for BZW50-180 is available on our Y-IC product page

For complete electrical curves, derating, mechanical outline, and qualification data, download the datasheet on this page now

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