LAP-601MB Green 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LAP-601MB is a single-character green 7-segment LED display manufactured by Rohm Semiconductor in a 10-DIP package configuration. This common anode display operates at 1.9V forward voltage with a 10mA test current and delivers 100mcd brightness at a peak wavelength of 572nm. The device is actively produced and RoHS3 compliant, making it suitable for legacy and new design applications requiring compact numeric display solutions.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers while maintaining functional equivalence in 7-segment display applications.

Key Parameters

Parameter	LAP-601MB
Manufacturer	Rohm Semiconductor
Display Type	7-Segment, Single Character
Common Pin Configuration	Common Anode
Color	Green
Digit Size	0.58" (14.60mm)
Package Type	10-DIP (0.400", 10.16mm)
Voltage - Forward (Vf) Typical	1.9V
Current - Test	10mA
Brightness Rating	100mcd
Wavelength - Peak	572nm
Power Dissipation (Max)	448mW
RoHS Status	RoHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the LAP-601MB is determined by the following critical parameters:

Primary Compatibility Criteria:

Display type: 7-Segment, single character
Common pin configuration: Common Anode
Color: Green
Package family: 10-DIP

Secondary Compatibility Parameters:

Forward voltage (Vf): Range 1.9V to 2.4V
Test current: 10mA to 20mA
Wavelength peak: 565nm to 572nm
Physical dimensions: Digit size 0.51" to 0.58"

All four substitute parts meet the primary compatibility criteria. Variations in forward voltage, test current, and brightness rating are within acceptable ranges for common anode 7-segment display applications where the display is driven through current-limiting resistors in the circuit design.

Parameter Comparison

Parameter	LAP-601MB (Rohm)	LTS-6460G (Lite-On)	SA56-21GWA (Kingbright)	TDSG5150 (Vishay)	TDSG5150-N (Vishay)
Display Type	7-Segment	7-Segment	7-Segment	7-Segment	7-Segment
Common Pin	Common Anode	Common Anode	Common Anode	Common Anode	Common Anode
Color	Green	Green	Green	Green	Green
Digit Size	0.58" (14.60mm)	0.56" (14.22mm)	0.56" (14.22mm)	0.51" (13.00mm)	0.51" (13.00mm)
Package Type	10-DIP (0.400", 10.16mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)
Voltage - Forward (Vf) Typical	1.9V	2.1V	2.2V	2.4V	2.4V
Current - Test	10mA	20mA	20mA	20mA	20mA
Brightness Rating	100mcd	2.4mcd	11mcd	9.5mcd	14mcd
Wavelength - Peak	572nm	565nm	565nm	565nm	565nm
Power Dissipation (Max)	448mW	75mW	62.5mW	550mW	550mW
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts are actively produced and RoHS3 compliant, meeting regulatory requirements equivalent to the LAP-601MB.

Package Consideration: The LAP-601MB uses a 10-DIP package with 0.400" (10.16mm) lead spacing, while all substitute parts use 10-DIP with 0.600" (15.24mm) lead spacing. This difference requires PCB layout verification before substitution.

Electrical Parameter Variations: Forward voltage ranges from 1.9V to 2.4V across all parts. Circuit designs using current-limiting resistors accommodate this variation. Test current specifications range from 10mA to 20mA; designs must verify that the selected resistor value and supply voltage support the substitute part's current requirements.

Brightness Characteristics: The LAP-601MB delivers 100mcd, significantly higher than substitute parts (2.4mcd to 14mcd). Applications requiring high brightness visibility must account for this difference through circuit design adjustments or alternative part selection.

Wavelength Consistency: The LAP-601MB operates at 572nm peak wavelength, while substitutes operate at 565nm. Both wavelengths are within the green spectrum and visually compatible for most applications.

Frequently Asked Questions (FAQ)

Q: Can TDSG5150 and TDSG5150-N be used interchangeably? A: Yes. Both parts are identical except for brightness rating (9.5mcd versus 14mcd). They share the same forward voltage (2.4V), test current (20mA), package type, and physical dimensions. Selection depends on brightness requirements.

Q: What is the primary difference between the LAP-601MB and LTS-6460G? A: The LAP-601MB operates at 1.9V with 10mA test current and 100mcd brightness. The LTS-6460G operates at 2.1V with 20mA test current and 2.4mcd brightness. The LAP-601MB also uses a narrower 10-DIP package (0.400" lead spacing) compared to the LTS-6460G (0.600" lead spacing).

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts meet RoHS3 compliance requirements. The LTS-6460G is REACH Affected; all other parts are REACH Unaffected.

Q: Can I substitute based on digit size alone? A: No. While digit size is a visual consideration, substitution requires matching the common pin configuration (Common Anode), display type (7-Segment), color (Green), and package family (10-DIP). Digit size variations (0.51" to 0.58") are secondary to these primary criteria.

Q: What happens if I use a substitute with higher forward voltage? A: Substitutes with higher forward voltage (up to 2.4V) require circuit verification. The current-limiting resistor value must be recalculated to ensure proper brightness and prevent excessive current draw. Supply voltage must remain adequate for the higher voltage drop.

Q: Is the 10-DIP package spacing difference critical? A: Yes. The LAP-601MB uses 0.400" lead spacing while all substitutes use 0.600" lead spacing. PCB footprints are not interchangeable without layout modification. Verify footprint compatibility before substitution.

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