LA-301AL 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LA-301AL is a red 7-segment LED display module manufactured by Rohm Semiconductor, designed for numeric and character display applications. This single-character display operates as a common cathode configuration with a 0.31" digit height and 10-DIP package format. The component is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent functional performance, package compatibility, and electrical operating parameters align with application requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	LA-301AL
Manufacturer	Rohm Semiconductor
Display Type	7-Segment LED
Number of Characters	1
Digit Height	0.31" (8.00mm)
Common Pin Configuration	Common Cathode
Color	Red
Package Type	10-DIP (0.209", 5.30mm)
Physical Dimensions	0.433" H x 0.276" W x 0.197" D (11.00mm x 7.00mm x 5.00mm)
Forward Voltage (Typ)	2.05V
Test Current	10mA
Brightness Rating	90mcd
Peak Wavelength	626nm
Power Dissipation (Max)	65mW
Product Status	Active
RoHS Compliance	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LA-301AL is determined by strict alignment of the following critical parameters:

Package Type: Must be 10-DIP (0.209", 5.30mm) for direct PCB compatibility
Display Configuration: Single character, 7-segment, common cathode topology
Digit Height: 0.31" (8.00mm) for visual consistency and mechanical fit
Color: Red wavelength in the 620-640nm range
Electrical Operating Range: Forward voltage between 2.0V-2.1V and test current capability of 10-20mA
Compliance Status: Active production status with RoHS3 compliance

The HDSP-U213 manufactured by Broadcom Limited meets these substitution criteria. Both components share identical package geometry, display type, common cathode configuration, and digit height. Electrical parameters remain within acceptable operating ranges for typical display applications.

Parameter Comparison

Parameter	LA-301AL (Rohm)	HDSP-U213 (Broadcom)	Compatibility
Manufacturer Part Number	LA-301AL	HDSP-U213	Different manufacturers
Display Type	7-Segment LED	7-Segment LED	Identical
Number of Characters	1	1	Identical
Digit Height	0.31" (8.00mm)	0.31" (8.00mm)	Identical
Common Pin Configuration	Common Cathode	Common Cathode	Identical
Color	Red	Red	Identical
Package Type	10-DIP (0.209", 5.30mm)	10-DIP (0.209", 5.30mm)	Identical
Physical Dimensions	0.433" H x 0.276" W x 0.197" D	0.433" H x 0.280" W x 0.197" D	Width variance 0.004" (0.10mm)
Forward Voltage (Typ)	2.05V	2.0V	Within 0.05V tolerance
Test Current	10mA	20mA	HDSP-U213 rated for higher current
Brightness Rating	90mcd	5.39mcd	LA-301AL significantly brighter
Peak Wavelength	626nm	635nm	Both red spectrum, 9nm difference
Power Dissipation (Max)	65mW	105mW	HDSP-U213 higher dissipation
Product Status	Active	Active	Both in production
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

Both the LA-301AL and HDSP-U213 maintain active production status with full RoHS3 compliance and unlimited moisture sensitivity ratings, qualifying both for equivalent component selection in compliant applications.

The LA-301AL provides higher brightness output at 90mcd versus the HDSP-U213 at 5.39mcd, making it suitable for applications requiring enhanced visibility. The LA-301AL operates at lower test current (10mA) and lower maximum power dissipation (65mW).

The HDSP-U213 is rated for higher test current operation (20mA) and exhibits higher maximum power dissipation (105mW), accommodating designs with different current sourcing requirements. The wavelength difference of 9nm (626nm versus 635nm) remains within the red spectrum and is not visually significant for most display applications.

Physical dimensions are nearly identical with only a 0.004" (0.10mm) width variance, presenting negligible impact on PCB layout and mechanical assembly.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-U213 directly replace the LA-301AL in existing designs?

A: Yes, for applications where the HDSP-U213's lower brightness rating (5.39mcd versus 90mcd) is acceptable. Both components share identical package geometry, pin configuration, and digit height. Verify that the application's brightness requirements are met by the substitute part before implementation.

Q: What is the significance of the 10mA versus 20mA test current difference?

A: Test current ratings indicate the current level at which the manufacturer specifies brightness and electrical characteristics. The LA-301AL is characterized at 10mA, while the HDSP-U213 is characterized at 20mA. Circuit designs must accommodate the electrical requirements of the selected component.

Q: Are there dimensional concerns with the 0.004" width difference?

A: The width variance of 0.004" (0.10mm) between the LA-301AL (0.276" W) and HDSP-U213 (0.280" W) is negligible for standard PCB layouts and mechanical assemblies. Both components fit the same 10-DIP footprint.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LA-301AL and HDSP-U213 are RoHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity ratings (MSL 1), making them suitable for equivalent use in regulated applications.

Q: What is the wavelength difference between 626nm and 635nm?

A: Both wavelengths fall within the red spectrum. The 9nm difference represents a slight shift toward longer wavelengths in the HDSP-U213, but this difference is not visually perceptible in typical display applications.

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