Equivalent & Substitute Parts for EN12-VS11AF25 Rotary Encoder

Part Overview

The EN12-VS11AF25 is a mechanical rotary encoder manufactured by TT Electronics/BI, featuring 12 pulses per revolution with quadrature (incremental) output. This right-angle PCB-mounted encoder includes an integrated switch and detent mechanism with a 6mm diameter flatted end actuator. The component is actively produced and RoHS compliant, making it suitable for applications requiring precise rotational position sensing with mechanical feedback.

Substitute parts are necessary to address inventory availability, lead time constraints, or design flexibility across multiple qualified manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Encoder Type	Mechanical
Output Type	Quadrature (Incremental)
Pulses per Revolution	12
Actuator Type	6mm Dia Flatted End
Detent	Yes
Built-in Switch	Yes
Mounting Type	PCB, Through Hole
Orientation	Right Angle
Termination Style	PC Pin
Rotational Life (Cycles Min)	30K

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across all key electrical and mechanical parameters. The following criteria define valid substitutes for EN12-VS11AF25:

Encoder type: Mechanical
Output configuration: Quadrature (Incremental)
Resolution: 12 pulses per revolution
Actuator geometry: 6mm diameter flatted end
Detent function: Present
Integrated switch: Present
PCB mounting: Through-hole configuration
Orientation: Right angle
Pin termination: PC pin style
Minimum rotational life: 30,000 cycles

All substitute parts listed meet these criteria without exception. Substitutes are available from TT Electronics/BI (EN12 series) and Bourns Inc. (PEC12R series), both manufacturers producing components with identical functional specifications and mechanical interfaces.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Encoder Type	Output Type	PPR	Actuator	Detent	Switch	Mounting	Orientation	Termination	Rotational Life	RoHS Status
EN12-VS11AF25	TT Electronics/BI	EN12	Mechanical	Quadrature (Incremental)	12	6mm Dia Flatted End	Yes	Yes	PCB, Through Hole	Right Angle	PC Pin	30K	RoHS Compliant
EN12-VS11AF18	TT Electronics/BI	EN12	Mechanical	Quadrature (Incremental)	12	6mm Dia Flatted End	Yes	Yes	PCB, Through Hole	Right Angle	PC Pin	30K	RoHS Compliant
PEC12R-2117F-S0012	Bourns Inc.	PEC12R	Mechanical	Quadrature (Incremental)	12	6mm Dia Flatted End	Yes	Yes	PCB, Through Hole	Right Angle	PC Pin	30K	ROHS3 Compliant
PEC12R-2120F-S0012	Bourns Inc.	PEC12R	Mechanical	Quadrature (Incremental)	12	6mm Dia Flatted End	Yes	Yes	PCB, Through Hole	Right Angle	PC Pin	30K	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain active product status with current manufacturing support. TT Electronics/BI EN12 series components carry RoHS compliance certification, while Bourns Inc. PEC12R series components meet ROHS3 compliance standards. Both manufacturers' products are REACH unaffected and classified under ECCN EAR99 with identical HTSUS coding (8543.70.4500).

Selection between TT Electronics/BI and Bourns Inc. variants depends on supply chain requirements and inventory availability. Current stock levels are: EN12-VS11AF25 (1,016 units), EN12-VS11AF18 (2,799 units), PEC12R-2117F-S0012 (2,086 units), and PEC12R-2120F-S0012 (2,067 units). All parts are packaged in trays suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can PEC12R series encoders directly replace EN12 series encoders?

A: Yes. Both series share identical electrical specifications (12 PPR quadrature output), mechanical interfaces (6mm flatted end actuator, right-angle PCB mounting, through-hole termination), and functional features (detent, integrated switch, 30K cycle minimum life). Pin-for-pin compatibility is maintained across all substitute parts listed.

Q: What is the difference between EN12-VS11AF25 and EN12-VS11AF18?

A: Both parts are mechanically and electrically identical. The difference in part number suffix reflects internal TT Electronics/BI product line designation. Functional performance, pin configuration, and mechanical mounting are equivalent.

Q: Are there compliance differences between TT Electronics/BI and Bourns Inc. parts?

A: TT Electronics/BI parts carry RoHS compliance certification, while Bourns Inc. parts carry ROHS3 compliance certification. Both certifications satisfy RoHS directive requirements. All parts are REACH unaffected. Selection should align with your specific compliance documentation requirements.

Q: What does the MSL (Moisture Sensitivity Level) rating mean?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These parts do not require special moisture-controlled storage or handling procedures prior to assembly.

Q: Can these encoders be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use identical PC pin termination styles and through-hole mounting configurations. No PCB layout modifications are required for substitution. Mechanical clearances for the 6mm flatted end actuator remain consistent across all listed parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message