LAP-301VB 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LAP-301VB is a single-character red 7-segment LED display manufactured by Rohm Semiconductor. It features a common anode configuration with a 0.31" digit height, designed for numeric and alphanumeric display applications. The device is housed in a 10-DIP package and operates at 1.9V forward voltage with 10mA test current. This part is currently in active production status with 987 units available in inventory. 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

LAP-301VB

Rohm SemiconductorIn Stock: 1083LAP-301VB Datasheet

Current PartRFQ

HDSP-U211

Broadcom LimitedIn Stock: 21480HDSP-U211 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LAP-301VB is determined by strict alignment across the following critical parameters:

• Display type: 7-segment, single character configuration
• Common pin configuration: Common anode
• Digit height: 0.31" (8.00mm)
• Color: Red
• Package type: 10-DIP (0.209", 5.30mm)
• Physical dimensions: Compatible within tolerance
• RoHS compliance status: ROHS3 Compliant

The HDSP-U211 manufactured by Broadcom Limited meets all substitution criteria. While electrical parameters such as forward voltage (2V vs. 1.9V), test current (20mA vs. 10mA), millicandela rating (5.39mcd vs. 36mcd), and wavelength peak (635nm vs. 650nm) differ, these variations remain within the allowable range for 7-segment red LED displays in the 0.31" category. Physical dimensions show minor variation in width (7.10mm vs. 7.00mm), which is within standard manufacturing tolerance for this package class.

Parameter Comparison

Engineering Selection Recommendations

Both the LAP-301VB and HDSP-U211 are active production components with ROHS3 compliance and REACH unaffected status, making them suitable for current design implementations. Selection between these parts should be based on application-specific electrical requirements and inventory availability.

The LAP-301VB provides higher brightness output (36mcd) and lower forward voltage operation (1.9V), making it suitable for applications requiring maximum visibility or lower-voltage power supply designs. The HDSP-U211 operates at slightly higher forward voltage (2V) and test current (20mA) with lower brightness output (5.39mcd), appropriate for applications where reduced brightness is acceptable or where higher current capability is required.

Both parts share identical package footprints, common anode configuration, and digit height, ensuring direct mechanical and electrical compatibility at the PCB level. The minor dimensional variation in width (0.1mm) is within standard manufacturing tolerance for 10-DIP packages and does not affect board layout or assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-U211 be used as a direct replacement for the LAP-301VB in existing designs?

A: Yes. Both parts share identical package type (10-DIP), common anode configuration, digit height (0.31"), and color (red). The parts are mechanically and electrically compatible for PCB substitution. However, the difference in brightness (36mcd vs. 5.39mcd) and forward voltage (1.9V vs. 2V) must be evaluated against specific application requirements.

Q: What is the significance of the millicandela rating difference?

A: The LAP-301VB provides 36mcd brightness while the HDSP-U211 provides 5.39mcd. This represents a substantial difference in light output. Applications requiring high visibility in bright ambient conditions should use the LAP-301VB. Applications with lower brightness requirements or where reduced power consumption is prioritized may use the HDSP-U211.

Q: Are there differences in wavelength between these parts?

A: Yes. The LAP-301VB operates at 650nm peak wavelength (standard red), while the HDSP-U211 operates at 635nm (orange-red). Both are within the red spectrum range. Visual color perception may differ slightly between the two parts under identical operating conditions.

Q: Do both parts require the same circuit design?

A: Both parts use common anode configuration and 10-DIP packaging, so the basic circuit topology remains identical. However, the forward voltage difference (1.9V vs. 2V) and current rating difference (10mA vs. 20mA) may require adjustment of current-limiting resistor values to maintain consistent brightness and operating point in the application circuit.

Q: What is the packaging difference between these parts?

A: The LAP-301VB is supplied in standard packaging, while the HDSP-U211 is supplied in tube packaging. Both use identical 10-DIP (0.209", 5.30mm) package type. Tube packaging may affect handling, storage, and automated assembly processes but does not affect electrical or mechanical compatibility.