PACA-3114 Equivalent & Substitute Parts

Part Overview

The PACA-3114 is a thumbwheel switch manufactured by ZF Electronics, designed for BCD output applications requiring 0.1A contact rating at 50VAC/DC. This component is panel-mounted with snap-in installation and features a pen-push actuator for manual digit selection (0–9). The product is classified as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

PACA-3114

ZF ElectronicsIn Stock: 932PACA-3114 Datasheet

Current PartRFQ

PICOD131AK2

APEM Inc.In Stock: 1480PICOD131AK2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PACA-3114 is determined by the following critical parameters:

Functional Equivalence Criteria:

• Output code must be BCD
• Read out range must be 0 ~ 9
• Number of sections must be 1
• Actuator type must be pushwheel
• Mounting configuration must be panel mount, snap-in
• Termination style must be card edge/solder pad
• Section width must be 0.300" (7.62mm)

Electrical Compatibility Criteria:

• Contact rating voltage must be equal to or greater than 50VAC/DC
• Contact current rating must be 0.1A or higher
• Contact finish must be gold or gold alloy

Mechanical & Environmental Criteria:

• Housing material must be PPO
• Operating temperature range must encompass or exceed -20°C ~ 80°C
• Depth behind flange must be 24.00mm
• RoHS3 compliance required

The PICOD131AK2 qualifies as a substitute based on matching functional parameters (BCD output, 0–9 range, single section, pushwheel actuator, panel mount snap-in, card edge termination, 0.300" width, 24mm depth, PPO housing, black color, ROHS3 compliance). However, the contact rating voltage is 40VAC/DC, which is lower than the original 50VAC/DC specification.

Parameter Comparison

Engineering Selection Recommendations

The PICOD131AK2 from APEM Inc. is an active product that maintains functional and mechanical compatibility with the obsolete PACA-3114. Both components share identical BCD output coding, 0–9 digit range, single-section configuration, pushwheel actuation, panel mount snap-in installation, card edge termination, 0.300" section width, 24mm depth, PPO housing, and ROHS3 compliance.

Key differences requiring evaluation:

Voltage Rating Reduction: The PICOD131AK2 operates at 0.1A @ 40VAC/DC compared to the original 50VAC/DC specification. This represents a 10VAC/DC reduction in maximum rated voltage. Applications operating at or below 40VAC/DC are fully compatible. Applications requiring 50VAC/DC operation must confirm that actual system voltage does not exceed the substitute's rating.

Operating Temperature Range: The PICOD131AK2 supports -20°C ~ 60°C, which is 20°C narrower than the original -20°C ~ 80°C range. Systems requiring operation above 60°C are not suitable for this substitute.

Electrical Life Specification: The PICOD131AK2 provides a rated electrical life of 100,000 cycles, whereas the original part does not specify this parameter. This documented specification supports reliability assessment for high-cycle applications.

Packaging: The PICOD131AK2 is supplied in trays, whereas the original part packaging is not specified. End caps are sold separately for the substitute, compared to inclusion with the original part.

Both components maintain ROHS3 compliance and are suitable for applications where the voltage and temperature constraints of the substitute are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the PICOD131AK2 directly replace the PACA-3114 in all applications?

A: Functional and mechanical compatibility is confirmed. However, two operational constraints must be verified: (1) system voltage must not exceed 40VAC/DC, and (2) operating temperature must remain within -20°C ~ 60°C. If your application requires 50VAC/DC operation or temperatures above 60°C, the PICOD131AK2 is not suitable.

Q: What is the significance of the 10VAC/DC voltage rating difference?

A: The PACA-3114 is rated for 50VAC/DC maximum, while the PICOD131AK2 is rated for 40VAC/DC maximum. This difference affects the component's ability to withstand transient overvoltage and long-term reliability at elevated voltages. Applications operating at 40VAC/DC or below are unaffected. Applications requiring 50VAC/DC operation must use the original part or identify an alternative substitute.

Q: Are the physical dimensions identical?

A: Yes. Both components share identical section width (0.300" / 7.62mm), depth behind flange (24.00mm), and panel cutout dimensions (14.30mm x 10.92mm). Display character height differs slightly (0.120" vs. 0.122"), which is negligible for most applications.

Q: What is the difference in packaging between these parts?

A: The PACA-3114 packaging is not specified in available documentation. The PICOD131AK2 is supplied in trays. Additionally, end caps are included with the PACA-3114 but sold separately for the PICOD131AK2. Verify end cap requirements for your application.

Q: Does the PICOD131AK2 have documented electrical life specifications?

A: Yes. The PICOD131AK2 is rated for 100,000 electrical cycles. The PACA-3114 does not provide this specification. For applications requiring high-cycle reliability assessment, the documented 100,000-cycle rating of the substitute supports design validation.

Q: Are both components RoHS compliant?

A: Yes. Both the PACA-3114 and PICOD131AK2 are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.

Q: What is the operating temperature constraint for the PICOD131AK2?

A: The PICOD131AK2 operates within -20°C ~ 60°C. The original PACA-3114 supports -20°C ~ 80°C. Applications requiring operation above 60°C must use the original part or identify an alternative substitute rated for higher temperatures.