Vishay TSM41: Industrial-Grade Surface-Mount Trimmers for Harsh Environments

Vishay Intertechnology has launched a series of industrial-grade, multi-turn surface-mount cermet trimmers called the TSM41. These tiny components are built for space-limited applications and harsh operating conditions. They feature a 4 mm by 4 mm footprint, an operating temperature range from -55 °C to +140 °C, and IP67 sealing.

The series offers a resistance range of 10 Ω to 1 MΩ, with a faster adjustment-to-time ratio when compared to single-turn trimmers. Rated for 0.25 W at +85 °C, the trimmers are available in both top and side adjustment configurations. There’s room for automated assembly and modifications as they are mounted straight on a PCB. Also, they can be placed on either side of a PCB, which can improve production speed and reduce manufacturing costs. 

The trimmers are fully sealed to withstand standard board wash processes, making the devices suitable for demanding applications like welding equipment, power tools, smoke detectors, and HVAC systems. Samples and production units of the TSM41 series are both available now, with lead times of 15 weeks. 

Key Features of Vishay TSM41

• 4 mm × 4 mm surface-mount multi-turn cermet trimmer

• Resistance range: 10 Ω to 1 MΩ with ±10% tolerance

• Operating temperature: –55 °C to +140 °C

• 0.25 W power rating at 85 °C

• Low temperature coefficient: ±100 ppm/°C

• IP67 sealed construction for board wash compatibility

• 12-turn adjustment with clutch action end stops

• Low contact resistance variation: 2% or 3 Ω typical

• Available in top and side adjustment configurations

• Pick-and-place compatible design

• High dielectric strength: 600 V RMS

• Industrial-grade construction

• Lightweight at 0.28 g

Applications of Vishay TSM41

• Welding equipment

• Power tools

• Smoke detectors

• HVAC systems

• Industrial automation

• Test and measurement instruments

• Motor control circuits

• Power supply regulation

• Audio equipment

• Medical devices