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  • THCP03 4.5x4.5mm Micro Tactile Switch Push Button Switches SMT SMD
  • THCP03 4.5x4.5mm Micro Tactile Switch Push Button Switches SMT SMD

THCP03 4.5x4.5mm Micro Tactile Switch Push Button Switches SMT SMD



  • Fully encapsulated contacts for increased reliability
  • Ultra Small Tactile Switches
  • IP67 splashproof rubber boot option
  • Suitable for high-density installations


  • Small appliances
  • Computers and peripherals
  • Medical instrumentation


  • Contact Rating:
DC 12V  50mA

DC   1V  10μA

  • Bounce
  • Insulation Resistance:
≧ 100 MΩ
  • Degree of Protection:
IP 67
  • Operating Temperature:
T +5/+35
  • Contact Resistance:
≦ 100mΩ

A tactile switch allows electricity to flow in an electrical circuit by manually pressing the operating section. The switch is used to supply input signal to actuate a device or equipment. It is designed with a small footprint suited for mounting onto the surface of printed circuit
boards (PCBs) made to connect electronic components to form electronic circuits (Figure 1). The switch activates when pressed and then turns off when released. This action is called ‘momentary action’ and can only be performed at low voltage and low current.
There are many different types of tactile switches, also known as tactile push switches or tact switches, used in a variety of applications including household appliances, office equipment, commercial equipment, and industrial machinery.
There are optional features such as size (external dimension), board mounting, and sealing structure for users to select for their applications. A tactile switch is literally a switch that users can “feel a click sense of touch”.
<Click response>
A click response of a button is the most characteristic feature of a tactile switch that lets users
feel the response of the operation from a switch. A clicking feel is generated from the contact
dome embedded in the switch. How large an operation stroke and how sharp a click sense of
touch depends on the materials and shapes of the contact dome.
<High Durability>
The contact dome also acts as a movable contact in a tactile switch. The resistance value
(contact resistance) which is generated between a movable contact and a fixed contact when a
switch is turned on can be stabilized by using specific materials, surface processing, and shape
enabling high durability capable of withstanding 100 thousand to 10 million times of use.


There are two types of tactile switches: Standard tactile switches and sealed tactile switches. The
sealed tactile switches are dust-protected and water-resistant to withstand harsh environmental
conditions. They are further sub-categorized into two types: PCB insert hole terminals type
and PCB surface mounted terminals type. For PCB insert hole terminals type, terminals are
inserted into holes on the PCB and are fixed by soldering. For PCB surface-mounted terminals
type, terminals are surface-mounted and soldered on the PCB. These switches can be
transported in a standalone package, or using a taping packaging method where a carrier tape
holds the switches in place with clearance between them.
Other variations include horizontal push button type, long-stroke type, and ultra subminiature
type switches and many more, ranging from different shapes and specifications that cater to
various applications

Read More

Product Features

        • WEUP’s Tact Switch: Enhancing Performance and Reliability for Your BusinessIntroductionIn today’s competitive marketplace, businesses are constantly seeking reliable and high-quality electronic components to enhance the performance of their products. One such component that plays a crucial role in various industries is the Tact Switch. WEUP’s Tact Switch, with its model number THCP03, is a game-changer in the industry. This comprehensive argument will demonstrate why B2B buyers, including importers, distributors, manufacturers, brands, wholesalers, and retailers, should consider WEUP’s Tact Switch for their business needs.

          Unparalleled Reliability and Performance

          1. Fully encapsulated contacts for increased reliability:
            • WEUP’s Tact Switch is designed with fully encapsulated contacts, ensuring enhanced durability and reliability. This feature makes it ideal for applications that require long-term performance, regardless of environmental conditions.
            • The encapsulated contacts protect against dust, debris, and moisture, making it suitable for use in demanding environments such as medical instrumentation and small appliances.
          2. High durability and long lifespan:
            • With a contact resistance of less than 100mΩ and an insulation resistance of over 100 MΩ, WEUP’s Tact Switch guarantees stable and reliable performance even after extensive use.
            • These switches are capable of withstanding 100 thousand to 10 million cycles of use, making them an excellent choice for applications that require frequent actuation.
          3. IP67 splash-proof rubber boot option:
            • For applications where additional protection against water and moisture is required, WEUP offers an IP67 splash-proof rubber boot option for their Tact Switch.
            • This feature ensures that the switch remains functional even when exposed to water splashes or in humid environments, making it suitable for a wide range of applications.

          Versatile Applications

          1. Small appliances:
            • WEUP’s Tact Switch is highly suitable for small appliances such as kitchen appliances, home automation devices, and consumer electronics.
            • The compact size of the THCP03 model (4.5×4.5mm) allows for high-density installations on printed circuit boards (PCBs), making it an ideal choice for space-constrained designs.
          2. Computers and peripherals:
            • Whether it’s laptops, keyboards, or computer mice, WEUP’s Tact Switch provides reliable input signal supply for actuating various computer peripherals.
            • Its tactile feedback ensures that users receive a satisfying click response when operating these devices.
          3. Medical instrumentation:
            • With its high reliability and durability, WEUP’s Tact Switch is well-suited for medical instruments that require precise and frequent actuation.
            • These switches can be found in devices such as temperature controllers, measuring instruments, and other medical equipment.

Why Choose WEUP?

High Quality

High Quality

Our switches are manufactured using top-grade materials and undergo rigorous quality control measures to ensure superior performance.


We understand the importance of cost-effectiveness in today’s competitive market. That’s why we offer our switches at a competitive price point without compromising on quality.

Reliable Supplier

Reliable Supplier

As one of the leading China manufacturers, WEUP has established a solid reputation for providing reliable products to customers worldwide. We work with reputable suppliers and have a strong network of distributors to ensure prompt delivery.

Excellent Customer Service

At WEUP, we value our customers’ satisfaction above all else. Our dedicated team is always ready to assist you with any inquiries or concerns you may have.

Excellent Customer Service


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CE Certificates
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CQC Certificates
ENEC Certification
ENEC Certificates
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PAHS Certificates
Goboll Rocker Swtich RoHS
RoHS Certificates
Goboll Rocker Swtich TUV
TUV Certificates
Goboll Rocker Swtich UL
UL Certificates

Technical Data

Rating (resistive load)1 to 50 mA, 3 to 24 VDC
Minimum applicable load (reference value)10 A at 1 VDC (resistive load)
Ambient operating temperature-25C to +70C at 60%RH max. (with no icing or condensation)
Ambient operating humidity35% to 85% (at +5 to +35C)
Contact formSPST-NO
Contact resistance (initial value)100 mΩ max.
Insulation resistance100 MΩ min. (at 250 VDC with insulation tester)
Dielectric strength500 VAC, 50/60 Hz for 1 min
Bounce time5 ms max.
Vibration resistanceMalfunction: 10 to 55 Hz, 1.5-mm double amplitude
Shock resistanceDestruction: 1,000 m/s2 {approx. 100G} max. Malfunction: 100 m/s2 {approx. 10G} max.
DurabilityStandard force models (1.57 N {160 gf}): 500,000 operations min. High-force models (2.26 N {230 gf}): 300,000 operations min.
WeightApprox. 0.3 g
Degree of protectionIEC IP67

THCP03 4.5x4.5mm Micro Tactile Switch Push Button Switches SMT SMDTHCP03 4.5x4.5mm Micro Tactile Switch Push Button Switches SMT SMD


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Do you supply samples? Are the Samples free?

Yes. Usually, 1-2 samples are free of charge, please support us by providing us with any express account such as DHL, FedEx, TNT, or UPS.

How is the shipping?

Our nearest port is Ningbo and Shanghai port, but if you collect the goods to ship together, we could send them to the other farther port. Usually, our customers will choose TNT, DHL, FedEx, and UPS to ship them.

How long is the delivery leading time?

Usually the samples 1-5 days to prepare. For orders, it depends on the quantity. Usually 5-15 days.

How is the packing?

For standard packing, dozens per box, 500pcs or 1000pcs per carton. We also provide you with custom box or carton packing with your logo and design.

How do you do regarding quality control?

All the products will be 100% checked before the shipment.

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