PEC12-4125F-S0012 Rotary Encoder Mechanical 12PPR Equivalent & Substitute Parts

Part Overview

The PEC12-4125F-S0012 is a mechanical rotary encoder manufactured by Bourns Inc., designed for quadrature (incremental) output applications with 12 pulses per revolution. This component features a 6mm diameter flatted end actuator, integrated detent mechanism, and built-in switch functionality for PCB through-hole mounting in vertical orientation.

The PEC12-4125F-S0012 is classified as obsolete. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Active alternatives from both Bourns Inc. (PEC12R series) and TT Electronics/BI (EN12 series) provide equivalent electrical and mechanical performance.

Substiute Parts

PEC12-4125F-S0012

Bourns Inc.In Stock: 833PEC12-4125F-S0012 Datasheet

Current PartRFQ

PEC12R-4125F-S0012

Bourns Inc.In Stock: 1381PEC12R-4125F-S0012 Datasheet

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PEC12R-4117F-S0012

Bourns Inc.In Stock: 1959PEC12R-4117F-S0012 Datasheet

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PEC12R-4120F-S0012

Bourns Inc.In Stock: 2545PEC12R-4120F-S0012 Datasheet

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PEC12R-4130F-S0012

Bourns Inc.In Stock: 2911PEC12R-4130F-S0012 Datasheet

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PEC12R-4217F-S0012

Bourns Inc.In Stock: 1989PEC12R-4217F-S0012 Datasheet

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PEC12R-4220F-S0012

Bourns Inc.In Stock: 1856PEC12R-4220F-S0012 Datasheet

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EN12-HS11AF18

TT Electronics/BIIn Stock: 933EN12-HS11AF18 Datasheet

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EN12-HS11AF25

TT Electronics/BIIn Stock: 6635EN12-HS11AF25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PEC12-4125F-S0012 are qualified based on strict equivalence across the following parameters:

• 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: Vertical
• Termination Style: PC Pin
• Rotational Life (Cycles Min): 30K

All substitute parts listed meet these criteria without exception. Substitutes are grouped into two categories: direct equivalents from the Bourns PEC12R series (active product status) and cross-manufacturer alternatives from the TT Electronics/BI EN12 series (active product status).

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are qualified for direct replacement of the PEC12-4125F-S0012 based on electrical and mechanical parameter equivalence.

Bourns PEC12R Series (Preferred for Same-Manufacturer Continuity): PEC12R-4125F-S0012, PEC12R-4117F-S0012, PEC12R-4120F-S0012, PEC12R-4130F-S0012, PEC12R-4217F-S0012, and PEC12R-4220F-S0012 are all active products with ROHS3 compliance. These parts maintain design continuity within the Bourns product line and offer higher inventory availability compared to the obsolete PEC12-4125F-S0012.

TT Electronics/BI EN12 Series (Cross-Manufacturer Alternative): EN12-HS11AF18 and EN12-HS11AF25 are active products with RoHS compliance. These parts provide cross-manufacturer substitution capability. EN12-HS11AF25 offers the highest inventory level (6532 pcs) among all substitute options.

Selection between Bourns and TT Electronics/BI alternatives should be based on supply chain strategy, existing vendor relationships, and procurement lead times. All parts meet identical functional and compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can PEC12R series parts directly replace the obsolete PEC12-4125F-S0012? A: Yes. All PEC12R-series parts listed (PEC12R-4125F-S0012, PEC12R-4117F-S0012, PEC12R-4120F-S0012, PEC12R-4130F-S0012, PEC12R-4217F-S0012, PEC12R-4220F-S0012) are direct functional equivalents with identical electrical and mechanical specifications. The primary difference is product status (active vs. obsolete) and packaging format (Tray vs. standard packaging).

Q: Are TT Electronics/BI EN12 parts compatible with designs using the PEC12-4125F-S0012? A: Yes. EN12-HS11AF18 and EN12-HS11AF25 meet all specified parameters including encoder type, output type, pulses per revolution, actuator geometry, detent mechanism, built-in switch, mounting type, orientation, termination style, and rotational life. Cross-manufacturer substitution is electrically and mechanically valid.

Q: What is the difference between the various PEC12R part numbers? A: The PEC12R variants listed differ in internal mechanical specifications not reflected in the provided parameter set. All variants maintain identical electrical output characteristics (12 PPR quadrature), actuator type (6mm flatted end), and mounting specifications. Selection among PEC12R variants should be based on application-specific mechanical requirements and availability.

Q: Which substitute part has the best availability? A: EN12-HS11AF25 has the highest inventory level at 6532 pcs. Among Bourns alternatives, PEC12R-4130F-S0012 offers the highest availability at 2835 pcs.

Q: Are all substitute parts RoHS compliant? A: Yes. Bourns PEC12R series parts are ROHS3 compliant. TT Electronics/BI EN12 series parts are RoHS compliant. Both compliance levels are acceptable for modern electronic applications.

Q: Can I mix substitute parts from different manufacturers in the same design? A: Yes. All substitute parts meet identical functional specifications and can be used interchangeably within the same circuit design. Mixed sourcing from Bourns and TT Electronics/BI is electrically and mechanically valid.