MAN4940A Equivalent & Substitute Parts

Part Overview

The MAN4940A is a 7-segment LED display module manufactured by onsemi, featuring a single red character with 0.4" digit height in a 14-DIP package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The display operates at 2.2V forward voltage with 20mA test current and delivers 1.9mcd brightness output at a 635nm peak wavelength.

Substiute Parts

MAN4940A

onsemiIn Stock: 1107MAN4940A Datasheet

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SC04-11EWA

KingbrightIn Stock: 2304SC04-11EWA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAN4940A is determined by strict alignment of the following parameters:

• Display configuration: 7-segment, single character, common cathode topology
• Physical compatibility: 0.40" digit height, matching overall dimensions (0.738" H x 0.386" W x 0.200" D)
• Electrical operation: Forward voltage range compatible with 2.2V nominal, test current of 20mA
• Package footprint: 14-DIP configuration with matching lead spacing and pin count
• Environmental compliance: Moisture Sensitivity Level 1 (Unlimited)

The SC04-11EWA from Kingbright meets these substitution criteria. While minor variations exist in forward voltage (2V vs. 2.2V), brightness output (5.6mcd vs. 1.9mcd), and wavelength (627nm vs. 635nm), these differences remain within acceptable tolerance for common cathode 7-segment display applications. The substitute maintains identical physical dimensions, package configuration, and electrical test current specifications.

Parameter Comparison

Engineering Selection Recommendations

The SC04-11EWA serves as a direct functional substitute for the MAN4940A in new designs and production transitions. The primary advantage of selecting the SC04-11EWA is its active product status, ensuring long-term availability and supply chain continuity. The Kingbright component carries RoHS3 compliance certification, meeting current environmental and regulatory standards.

The forward voltage differential (0.2V lower on the SC04-11EWA) requires circuit-level verification to confirm compatibility with existing current-limiting resistor designs. The increased brightness output (5.6mcd vs. 1.9mcd) may necessitate adjustment of series resistor values to maintain consistent display intensity in the target application. Both components share identical moisture sensitivity classification and maintain equivalent mechanical footprints for PCB layout purposes.

Frequently Asked Questions (FAQ)

Q: Can the SC04-11EWA replace the MAN4940A in existing circuit designs without modification?

A: Physical and functional compatibility is confirmed. However, the 0.2V forward voltage difference and 2.9x brightness increase require circuit validation. Series resistor values may require adjustment to maintain intended display brightness and current draw.

Q: Are there pin-to-pin compatibility concerns between these components?

A: Both components use 14-DIP package configuration with 11 leads. Physical dimensions are identical (0.738" H x 0.386" W x 0.200" D). Minor package pitch variation (0.300" vs. 0.295") does not affect PCB footprint compatibility for standard DIP sockets and through-hole layouts.

Q: What is the primary reason for substituting the MAN4940A?

A: The MAN4940A is classified as obsolete. The SC04-11EWA is an active product with confirmed inventory availability and ongoing manufacturer support, making it the appropriate choice for new production and design continuity.

Q: Do both components meet current environmental compliance standards?

A: The SC04-11EWA carries RoHS3 compliance certification. The MAN4940A, as an obsolete component, does not carry current compliance markings. Both components are REACH Unaffected and classified under ECCN EAR99.

Q: How does the brightness difference affect display visibility?

A: The SC04-11EWA delivers 5.6mcd compared to the MAN4940A's 1.9mcd at identical test current (20mA). This increased output may require series resistor adjustment to prevent over-brightness in the target application. Wavelength difference (627nm vs. 635nm) is imperceptible to human vision in red LED applications.