LDD-A812RI Equivalent & Substitute Parts

Part Overview

The LDD-A812RI is a 7-segment LED display module manufactured by Lumex Opto/Components Inc. This dual-character green display operates as a common anode configuration with a 0.80-inch character size in an 18-DIP package. The device is classified as Active product status and maintains full RoHS3 compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the specified tolerances for this display category. The primary substitute maintains identical package configuration, display type, character count, and common pin architecture while operating within compatible voltage and current specifications.

Substiute Parts

LDD-A812RI

Lumex Opto/Components Inc.In Stock: 740LDD-A812RI Datasheet

Current PartRFQ

DA08-11GWA

KingbrightIn Stock: 1290DA08-11GWA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-A812RI is determined by strict alignment of the following parameters:

Critical Parameters (Must Match Exactly):

• Display Type: 7-Segment
• Number of Characters: 2
• Common Pin Configuration: Common Anode
• Character Size: 0.80 inches (20.32mm)
• Package Type: 18-DIP (0.866", 22.00mm)
• Color: Green
• Forward Voltage (Typ): 2.2V
• Wavelength - Peak: 565nm
• RoHS3 Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameters (Within Acceptable Range):

• Current - Test: 10mA to 20mA
• Millicandela Rating: 3.9mcd to 11mcd
• Power Dissipation (Max): 62.5mW to 105mW
• Physical Dimensions: ±0.002 inches tolerance

The DA08-11GWA from Kingbright meets all critical parameter requirements and operates within the acceptable variable parameter ranges, establishing it as a direct substitute for the LDD-A812RI.

Parameter Comparison

Engineering Selection Recommendations

LDD-A812RI (Lumex Opto/Components Inc.):

• Primary selection for applications requiring 10mA test current specification
• Lower millicandela rating (3.9mcd) suitable for applications with reduced brightness requirements
• Active product status with established supply chain
• ROHS3 compliant and REACH unaffected

DA08-11GWA (Kingbright):

• Suitable for applications tolerating 20mA test current specification
• Higher millicandela rating (11mcd) provides increased brightness output
• Active product status with higher inventory availability (1260 pcs vs 653 pcs)
• ROHS3 compliant and REACH unaffected
• Lower maximum power dissipation (62.5mW vs 105mW)

Both parts maintain identical electrical operating voltage (2.2V forward voltage), wavelength characteristics (565nm peak), and mechanical package configuration (18-DIP). Selection between these parts depends on circuit current budget and brightness requirements within the application design.

Frequently Asked Questions (FAQ)

Q: Can DA08-11GWA replace LDD-A812RI in existing circuit designs?

A: Yes. Both parts operate at identical forward voltage (2.2V) and wavelength (565nm), share the same 18-DIP package pinout, and maintain common anode configuration. The DA08-11GWA operates at higher test current (20mA vs 10mA) and produces higher brightness (11mcd vs 3.9mcd). Circuit designs must accommodate the increased current specification.

Q: What are the physical dimension differences between these parts?

A: Height differs by 0.002 inches (0.05mm): LDD-A812RI measures 1.016" while DA08-11GWA measures 1.018". Width and depth are identical at 1.409" and 0.394" respectively. This minimal variance does not affect PCB layout or mechanical mounting.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LDD-A812RI and DA08-11GWA carry ROHS3 Compliant certification and REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity classification for these displays?

A: Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: How do the power dissipation specifications compare?

A: LDD-A812RI specifies maximum power dissipation of 105mW at 10mA test current. DA08-11GWA specifies 62.5mW maximum at 20mA test current. The lower dissipation in the Kingbright part reflects improved LED efficiency despite higher current operation.

Q: Are the 18-DIP packages mechanically interchangeable?

A: Yes. Both parts use 18-DIP (0.866", 22.00mm) package configuration with identical pin spacing and mechanical footprint, enabling direct PCB substitution without layout modifications.