HSP181-2W3Y The HSP181-2W3Y is a 29V Zener TVS diode from STMicroelectronics in SOT-323-3 package. It features 2A peak pulse current and 2.1pF capacitance.
Mfr Part #:

HSP181-2W3Y

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The HSP181-2W3Y is a 29V Zener TVS diode from STMicroelectronics in SOT-323-3 package. It features 2A peak pulse current and 2.1pF capacitance.
Total Stock: 24,000 pcs
$ Price Range: $0.14 - $0.34

HSP181-2W3Y Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
18,000 pcs
18000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
6,000 pcs
6000 pcs On Request 1 On Request On Request On Request On Request On Request

HSP181-2W3Y Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Automotive Grade
Capacitance
Capacitance @ Frequency
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

HSP181-2W3Y Description

Short technical summary and product information.

The HSP181-2W3Y is a Zener-type transient voltage suppression (TVS) diode designed for protecting sensitive electronics from voltage transients. With a breakdown voltage of 29V and a peak pulse current rating of 2A (8/20µs waveform), it handles 50W of peak pulse power. Its low typical capacitance of 2.1pF at 1MHz makes it suitable for high-speed signal lines.

 

The device integrates two unidirectional channels in a compact SOT-323-3 surface mount package. It is qualified for automotive applications and USB port protection, operating over a junction temperature range of -55°C to 150°C. The surface mount design facilitates automated assembly in space-constrained designs.

 

This TVS diode provides reliable clamping for ESD and other transient events without power line protection. Its low leakage and fast response ensure minimal signal degradation, making it ideal for data lines in automotive electronics and consumer interfaces.

HSP181-2W3Y Quick Information

Product Type: Zener TVS Diode
Series: HSP181
Canonical Name: HSP181-2W3Y — 29V Zener Diode, Dual Unidirectional, SOT-323-3
Subcategory: TVS Diodes

HSP181-2W3Y Compliance

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

HSP181-2W3Y Estimated Pricing

Qty Low High
1+ $0.34 $0.34
10+ $0.21 $0.21
100+ $0.17 $0.17
500+ $0.16 $0.16
1,000+ $0.15 $0.15
3,000+ $0.14 $0.14
6,000+ $0.14 $0.14

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

HSP181-2W3Y Features

  • 29V breakdown voltage Zener TVS diode.
  • 2A peak pulse current at 8/20µs waveform.
  • 2.1pF low capacitance at 1 MHz.
  • Dual unidirectional channels in SOT-323-3.
  • Operating temperature range -55°C to 150°C.

HSP181-2W3Y Applications

  • Used in automotive electronic control units.
  • Suitable for USB port ESD protection.
  • Ideal for high-speed data line protection.

HSP181-2W3Y FAQs

7 frequently asked questions generated from this part’s specifications.
What is the breakdown voltage of the HSP181-2W3Y?

The breakdown voltage is 29 V.

What is the peak pulse current rating?

The peak pulse current is 2 A for an 8/20 µs waveform.

What package is the HSP181-2W3Y available in?

It is available in a SOT-323-3 surface mount package.

What is the capacitance of this TVS diode?

Typical capacitance is 2.1 pF at 1 MHz.

What is the operating temperature range?

The junction temperature range is -55°C to 150°C.

Is the HSP181-2W3Y suitable for automotive applications?

Yes, it is specified for automotive and USB applications.

How many unidirectional channels does it have?

It has 2 unidirectional channels.

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