QUANTEK
Bourns® PEC11S Series 12 mm SMD Incremental Encoder Expansion Adds Additional Shaft Length Options for HMI Input Control Applications
Bourns, Inc. introduced an expansion of its PEC11S Series 12 mm surface mount incremental encoders with additional shaft length options and expanded switch configurations. The contacting encoder provides 2-bit quadrature output for precise rotational input control in compact user interface designs. Designers of control interfaces in industrial, consumer, and communications equipment require compact input devices that maintain consistent electrical performance within defined mechanical constraints. Limited shaft length availability can restrict enclosure design flexibility and increase mechanical redesign effort. In addition, integrating rotary and push input functions often requires additional components or design tradeoffs. The expanded PEC11S Series addresses these design constraints by offering multiple shaft lengths and integrated SPST momentary switch configurations within a compact 12 mm package, enabling simplified panel layout and component selection.
“Expanding shaft length and switch configuration options in the PEC11S Series provides engineers with additional flexibility to match their mechanical layout requirements while maintaining consistent electrical performance," said Javier Navarro, Product Line Manager, Bourns, Inc.
Design Features and Key Capabilities
- Push switch option (standard) — Integrated momentary switch for combined rotary and push input
- Compact, rugged design — Small form factor with durable construction for space-constrained applications
- High reliability — Consistent electrical and mechanical performance over specified life cycles
- Metal bushing and shaft — Reinforced structure for mechanical strength and long-term durability
- Surface mount version — Supports automated PCB assembly using reflow soldering processes
Electrical Specifications
| Parameter | Specification |
|---|---|
| Output | 2-bit quadrature code |
| Closed Circuit Resistance | 3 Ω maximum |
| Contact Rating | 10 mA at 5 VDC |
| Insulation Resistance | 100 MΩ at 250 V DC |
| Dielectric Withstanding Voltage | 300 VAC minimum (at sea level) |
| Electrical Travel | Continuous |
| Operating Speed | 60 rpm maximum |
| Operating Temperature Range | −40 °C to +70 °C |
| Rotational Life | 15,000 cycles minimum |
| Switch Life | 20,000 cycles minimum |
Target Applications
Level control, tuning, and timer settings in:
- Audio-visual equipment — Supports volume, balance, or menu navigation inputs
- Consumer electrical appliances — Enables compact interface control functions
- Radios — Enables tuning through incremental rotation
- Musical instrumentation — Supports real-time parameter control
- Communications equipment — Used for selection and adjustment interfaces
