PECA-4000 Equivalent & Substitute Parts

Part Overview

The PECA-4000 is a thumbwheel switch manufactured by ZF Electronics, designed for BCD output applications requiring 0.1A contact rating at 50VAC/DC. This component features panel mount, snap-in installation with a single section configuration and pushwheel actuator mechanism. 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.

Key Parameters

Parameter	Value
Manufacturer Part Number	PECA-4000
Manufacturer	ZF Electronics
Output Code	BCD
Read Out Range	0 ~ 9
Number of Sections	1
Contact Rating	0.1A @ 50VAC/DC
Actuator Type	Pushwheel
Mounting Type	Panel Mount, Snap-In
Display Characters Height	0.196" (5.00mm)
Section Width	0.300" (7.62mm)
Depth Behind Flange	42.00mm
Operating Temperature Range	-20°C ~ 80°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PECA-4000 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

Electrical Compatibility Criteria:

Contact rating voltage must be equal to or greater than 50VAC/DC
Contact current rating must be 0.1A or higher
Operating temperature range must encompass -20°C ~ 80°C

Mechanical Compatibility Criteria:

Section width must be 0.300" (7.62mm)
Display character height must be within acceptable tolerance of 0.196" (5.00mm)
Depth behind flange must be compatible with 42.00mm specification

Regulatory Compliance:

RoHS3 compliance required
MSL rating of 1 (Unlimited) acceptable

The SMCD131AL2 qualifies as a substitute based on matching functional parameters, compatible mechanical dimensions, and regulatory compliance, with the exception of reduced voltage rating (40VAC/DC versus 50VAC/DC).

Parameter Comparison

Parameter	PECA-4000 (Main Part)	SMCD131AL2 (Substitute)
Manufacturer	ZF Electronics	APEM Inc.
Output Code	BCD	BCD
Read Out Range	0 ~ 9	0 ~ 9
Number of Sections	1	1
Contact Rating	0.1A @ 50VAC/DC	0.1A @ 40VAC/DC
Actuator Type	Pushwheel	Pushwheel
Mounting Type	Panel Mount, Snap-In	Panel Mount, Snap-In
Display Characters Height	0.196" (5.00mm)	0.193" (4.90mm)
Section Width	0.300" (7.62mm)	0.300" (7.62mm)
Depth Behind Flange	42.00mm	42.10mm
Operating Temperature Range	-20°C ~ 80°C	-20°C ~ 80°C
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Tray

Engineering Selection Recommendations

The SMCD131AL2 manufactured by APEM Inc. is an active product with current availability and full ROHS3 compliance, making it suitable for applications where the PECA-4000 is no longer obtainable. Both components share identical BCD output coding, read-out range, section configuration, and mechanical mounting specifications.

The primary electrical difference is the contact voltage rating: the SMCD131AL2 is rated for 40VAC/DC compared to the PECA-4000's 50VAC/DC specification. This reduction in voltage rating must be evaluated against the actual operating voltage requirements of the target application. If the application operates at voltages exceeding 40VAC/DC, the SMCD131AL2 is not suitable.

Mechanical dimensions are substantially equivalent, with display character height differing by 0.010" (0.10mm) and depth behind flange differing by 0.10mm, both within typical manufacturing tolerances for panel-mounted components.

The SMCD131AL2 provides enhanced contact material specifications (Copper Tin Alloy with Gold finish) compared to the PECA-4000, and is housed in Polyphenylene Oxide (PPO) material. Active product status ensures ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the SMCD131AL2 directly replace the PECA-4000 in all applications?

A: Direct replacement is possible only in applications where the operating voltage does not exceed 40VAC/DC. The PECA-4000 is rated for 50VAC/DC; the SMCD131AL2 is rated for 40VAC/DC. Applications operating at voltages between 40VAC/DC and 50VAC/DC require evaluation of actual system requirements before substitution.

Q: Are the mechanical dimensions compatible?

A: Yes. Both components share identical section width (0.300" / 7.62mm) and panel mount, snap-in configuration. Display character height differs by 0.010" (0.10mm) and depth behind flange differs by 0.10mm, both within acceptable manufacturing tolerances for this component category.

Q: What is the significance of the product status difference?

A: The PECA-4000 is classified as obsolete, indicating it is no longer manufactured or supported by ZF Electronics. The SMCD131AL2 is active, meaning APEM Inc. continues production and maintains supply availability. For new designs or long-term system support, the active product status of the SMCD131AL2 provides supply chain assurance.

Q: Are both components RoHS3 compliant?

A: Yes. Both the PECA-4000 and SMCD131AL2 are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing.

Q: What is the difference in contact material and finish?

A: The PECA-4000 contact material and finish specifications are not provided. The SMCD131AL2 features Copper Tin Alloy contacts with Gold finish, which provides enhanced corrosion resistance and contact reliability compared to standard contact materials.

Q: Are the BCD output codes identical?

A: Yes. Both components provide BCD output with 0 ~ 9 read-out range in a single section configuration, ensuring functional equivalence for digital display and control applications.

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