LB-502MN Green 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LB-502MN is a dual-character green 7-segment LED display module manufactured by Rohm Semiconductor. This 18-DIP package component features a 0.51" digit height with common cathode configuration, designed for numeric and alphanumeric display applications. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for this display category.

Substiute Parts

LB-502MN

Rohm SemiconductorIn Stock: 831LB-502MN Datasheet

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DC56-11GWA

KingbrightIn Stock: 1140DC56-11GWA Datasheet

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HDSP-523G

Broadcom LimitedIn Stock: 2356HDSP-523G Datasheet

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HDSP-5623

Broadcom LimitedIn Stock: 2145HDSP-5623 Datasheet

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LDD-C512RI

Lumex Opto/Components Inc.In Stock: 1384LDD-C512RI Datasheet

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LTD-6440G

Lite-On Inc.In Stock: 1029LTD-6440G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB-502MN are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• Number of Characters: 2
• Display Type: 7-Segment
• Common Pin Configuration: Common Cathode
• Color: Green
• Package / Case: 18-DIP (0.600", 15.24mm)

Allowed Variation Parameters:

• Digit/Alpha Size: 0.51" to 0.56" (13.00mm to 14.22mm)
• Voltage - Forward (Vf) (Typ): 2.0V to 2.2V
• Current - Test: 10mA to 20mA
• Wavelength - Peak: 563nm to 568nm (green spectrum)
• Physical Dimensions: Minor variations within mechanical envelope

All substitute parts maintain the same 18-DIP pinout and common cathode topology, ensuring direct functional replacement capability within the specified electrical operating ranges.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full RoHS3 compliance, meeting regulatory requirements equivalent to the LB-502MN. The following considerations apply to component selection:

HDSP-5623 (Broadcom Limited): Matches the LB-502MN forward voltage (2.1V) and test current (10mA) with identical 18-DIP package configuration. Digit height increases to 0.56", representing a 9.8% size increase within acceptable mechanical envelope tolerances.

HDSP-523G (Broadcom Limited): Operates at 2.0V forward voltage with 10mA test current. Wavelength peak at 568nm remains within green spectrum range. Digit height of 0.56" accommodates applications requiring slightly larger character display.

DC56-11GWA (Kingbright): Specified at 2.2V forward voltage and 20mA test current. Power dissipation reduces to 62.5mW maximum. Digit height of 0.56" with 18-DIP package maintains pinout compatibility.

LDD-C512RI (Lumex Opto/Components Inc.): Operates at 2.2V forward voltage with 10mA test current. Maintains 18-DIP package configuration with 0.56" digit height. Power dissipation at 105mW maximum.

LTD-6440G (Lite-On Inc.): Specified at 2.1V forward voltage matching the LB-502MN with 20mA test current. Digit height of 0.56" with standard 18-DIP package. Note: REACH Status listed as Affected, requiring verification for applications subject to REACH compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different digit height?

A: Yes. The LB-502MN operates with 0.51" digit height, while all listed substitutes feature 0.56" digit height. This 9.8% increase remains within acceptable mechanical envelope tolerances for 18-DIP packages. Physical mounting and PCB layout must accommodate the larger character size.

Q: Are all substitute parts pin-compatible with the LB-502MN?

A: Yes. All substitute parts use the 18-DIP (0.600", 15.24mm) package with common cathode configuration. Direct socket replacement is possible without circuit modification.

Q: What is the impact of different forward voltage specifications?

A: The LB-502MN operates at 2.1V typical forward voltage. Substitute parts range from 2.0V to 2.2V. Current-limiting resistor values in the drive circuit may require adjustment to maintain consistent brightness and current levels. Verify circuit design accommodates the specified voltage range.

Q: Can I substitute parts with different test current ratings?

A: Yes. The LB-502MN specifies 10mA test current. Substitutes DC56-11GWA and LTD-6440G operate at 20mA test current. Circuit design must provide appropriate current-limiting resistors to maintain safe operating conditions within the specified current range.

Q: What is the significance of wavelength peak differences?

A: All substitute parts maintain green spectrum wavelengths between 563nm and 568nm. Visual color appearance remains consistent across the range. Wavelength peak differences of 5nm are imperceptible in typical display applications.

Q: Does the LTD-6440G REACH Affected status impact substitution?

A: The LTD-6440G is listed as REACH Affected, while the LB-502MN is REACH Unaffected. Applications subject to REACH compliance requirements must verify regulatory status before selecting this substitute. Other alternatives maintain REACH Unaffected status.

Q: What packaging format differences exist among substitutes?

A: The LB-502MN is supplied in Bulk packaging. Substitute parts are available in Tube (HDSP-5623, HDSP-523G, DC56-11GWA, LTD-6440G) or Bulk (LDD-C512RI) packaging. Packaging format does not affect electrical or mechanical compatibility.