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EN12-HS22AF25 Equivalent & Substitute Parts
Part Overview
The EN12-HS22AF25 is a mechanical rotary encoder manufactured by TT Electronics/BI, configured for 24 pulses per revolution with quadrature (incremental) output. This vertical-mount, through-hole component features a 6mm diameter flatted end actuator, integrated detent mechanism, and built-in switch functionality. The part is currently active in production with 849 units in stock.
Substitute parts become necessary when the primary part number reaches end-of-life status, inventory depletion occurs, or when design flexibility allows for functionally equivalent alternatives from qualified manufacturers. All substitute parts listed maintain identical electrical and mechanical specifications within the EN12 and PEC12R series families.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Encoder Type | Mechanical |
| Output Type | Quadrature (Incremental) |
| Pulses per Revolution | 24 |
| Actuator Type | 6mm Dia Flatted End |
| Detent | Yes |
| Built in Switch | Yes |
| Mounting Type | PCB, Through Hole |
| Orientation | Vertical |
| Termination Style | PC Pin |
| Rotational Life (Cycles Min) | 30K |
| Packaging | Tray |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following critical parameters: encoder type (mechanical), output type (quadrature incremental), pulses per revolution (24), actuator geometry (6mm diameter flatted end), detent presence, integrated switch functionality, mounting configuration (PCB through-hole), vertical orientation, PC pin termination, and minimum rotational life rating (30K cycles).
The substitute parts are grouped into two manufacturer families:
TT Electronics/BI EN12 Series: EN12-HS22AF18, EN12-HS22AF20, EN12-HS22AF30. These parts maintain identical specifications and differ only in internal construction details not affecting functional performance or pin compatibility.
Bourns Inc. PEC12R Series: PEC12R-3222F-S0024, PEC12R-4217F-S0024, PEC12R-4220F-S0024, PEC12R-4222F-S0024, PEC12R-4225F-S0024, PEC12R-4230F-S0024. These cross-manufacturer alternatives meet all electrical and mechanical requirements for direct substitution.
Parameter Comparison
| Part Number | Manufacturer | Series | Encoder Type | Output Type | PPR | Actuator | Detent | Switch | Mount | Orientation | Termination | Life (Cycles) | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EN12-HS22AF25 | TT Electronics/BI | EN12 | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | RoHS Compliant | 849 |
| EN12-HS22AF18 | TT Electronics/BI | EN12 | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | RoHS Compliant | 6379 |
| EN12-HS22AF20 | TT Electronics/BI | EN12 | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | RoHS Compliant | 11448 |
| EN12-HS22AF30 | TT Electronics/BI | EN12 | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | RoHS Compliant | 3116 |
| PEC12R-3222F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 2793 |
| PEC12R-4217F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 2454 |
| PEC12R-4220F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 3294 |
| PEC12R-4222F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 2272 |
| PEC12R-4225F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 8200 |
| PEC12R-4230F-S0024 | Bourns Inc. | PEC12R | Mechanical | Quadrature (Incremental) | 24 | 6mm Dia Flatted End | Yes | Yes | PCB, Through Hole | Vertical | PC Pin | 30K | ROHS3 Compliant | 1279 |
Engineering Selection Recommendations
All listed substitute parts maintain active product status and comply with RoHS directives. TT Electronics/BI EN12 series alternatives (EN12-HS22AF18, EN12-HS22AF20, EN12-HS22AF30) provide same-manufacturer continuity with higher inventory availability. EN12-HS22AF20 offers the largest stock position at 11,448 units.
Bourns Inc. PEC12R series alternatives satisfy cross-manufacturer substitution requirements with ROHS3 compliance certification. PEC12R-4225F-S0024 provides the highest inventory level among Bourns options at 8,200 units. All PEC12R variants carry REACH Unaffected status matching the primary part.
Selection between TT Electronics/BI and Bourns alternatives depends on supply chain qualification and procurement policy. Both manufacturer families deliver equivalent functional performance and mechanical compatibility for through-hole PCB assembly applications.
Frequently Asked Questions (FAQ)
Q: Can EN12-HS22AF25 be replaced with any of the listed substitute parts without circuit modification?
A: Yes. All substitute parts maintain identical electrical output type (quadrature incremental), pulse count (24 PPR), pin termination style (PC pin), and mechanical mounting configuration (vertical PCB through-hole). Direct substitution requires no circuit redesign.
Q: What is the difference between TT Electronics/BI EN12 variants and Bourns PEC12R variants?
A: Both families meet identical functional specifications for this application. Differences exist only in internal mechanical construction and manufacturer-specific design details. Selection is based on supply availability, procurement qualification, and inventory position.
Q: Are all substitute parts available in the same tray packaging as EN12-HS22AF25?
A: Yes. All substitute parts are supplied in tray packaging, maintaining consistency with the primary part's packaging format.
Q: Do substitute parts carry the same compliance certifications?
A: All parts are RoHS compliant and REACH Unaffected. TT Electronics/BI parts carry RoHS Compliant status; Bourns parts carry ROHS3 Compliant status. Both certifications satisfy equivalent regulatory requirements.
Q: Which substitute part offers the best inventory availability?
A: EN12-HS22AF20 (TT Electronics/BI) provides the highest stock level at 11,448 units. Among Bourns alternatives, PEC12R-4225F-S0024 offers 8,200 units.
Q: Is the 30K cycle rotational life specification consistent across all parts?
A: Yes. All substitute parts maintain the 30K minimum rotational life rating, ensuring equivalent mechanical durability for the intended application.
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