Laser Diode 650nm 5mW 12mm Diameter (104990021) - Equivalent & Substitute Parts

Part Overview

The Seeed Technology Co., Ltd model 104990021 is a 650nm laser diode rated at 5mW output power with an 8V input voltage and 25mA current rating, housed in a 12.0mm diameter cylinder package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system design and maintenance applications. The laser diode operates at a standard red wavelength (650nm) commonly used in optical measurement, alignment, and indicator applications.

Substiute Parts

104990021

Seeed Technology Co., LtdIn Stock: 984104990021 Datasheet

Current PartRFQ

VLM-650-07 LPA

Quarton Inc.In Stock: 1204VLM-650-07 LPA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of laser diode 104990021 is determined by the following critical parameters:

Primary Matching Criteria:

• Wavelength: 650nm (red laser, standard optical frequency)
• Package form factor: Cylindrical housing compatible with 12mm-class mechanical mounting
• Moisture sensitivity classification: MSL 1 (unlimited shelf life)
• Export classification: EAR99 (same regulatory category)

Secondary Compatibility Factors:

• Input voltage range must accommodate or overlap with 8V nominal operation
• Current rating must be compatible with existing drive circuitry
• Output power must meet or exceed application requirements

The substitute part VLM-650-07 LPA from Quarton Inc. shares the same wavelength (650nm), cylindrical package class (12.5mm diameter), MSL rating (1), and ECCN classification (EAR99), establishing it as a functionally equivalent alternative despite differences in power output and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 104990021 is classified as obsolete. The VLM-650-07 LPA is classified as active, ensuring continued availability and supply chain reliability for new designs and replacement applications.

Compliance and Certification: Both components share identical ECCN classification (EAR99) and MSL rating (1), confirming regulatory equivalence. The VLM-650-07 LPA carries explicit RoHS3 compliance certification, providing additional environmental compliance documentation for applications requiring such verification.

Electrical Parameter Differences: The VLM-650-07 LPA operates across a wider input voltage range (5V ~ 12V) compared to the fixed 8V specification of 104990021. This broader voltage tolerance accommodates the 8V nominal operation point of the original component. The substitute part draws 35mA versus the original 25mA, requiring verification that existing drive circuitry can supply this increased current.

Power Output Variance: The VLM-650-07 LPA delivers 3mW output versus the original 5mW. Applications requiring the full 5mW output power must evaluate whether the reduced power level meets functional requirements.

Mechanical Compatibility: Package diameter increases from 12.0mm to 12.5mm. Mechanical mounting fixtures and mechanical clearances must accommodate this 0.5mm increase in cylinder diameter.

Frequently Asked Questions (FAQ)

Q: Can VLM-650-07 LPA directly replace 104990021 in existing designs?

A: Direct replacement requires verification of three factors: (1) drive circuitry capability to supply 35mA versus the original 25mA, (2) application tolerance for 3mW output power versus the original 5mW, and (3) mechanical accommodation of the 12.5mm diameter versus 12.0mm diameter cylinder. The wider input voltage range (5V ~ 12V) of the substitute accommodates the original 8V specification.

Q: What is the significance of the MSL 1 rating for both components?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life with no special moisture control requirements during storage or handling. Both components share this classification, confirming equivalent moisture sensitivity characteristics.

Q: Why is the wavelength specification critical for laser diode substitution?

A: Wavelength determines the optical frequency and color of the laser output. Both components operate at 650nm (red laser), ensuring optical system compatibility. Wavelength is not interchangeable; substitution outside this specification would require complete optical system redesign.

Q: What does the ECCN EAR99 classification mean for component selection?

A: ECCN (Export Control Classification Number) EAR99 indicates both components fall under the same export control category. This ensures regulatory equivalence for international supply chain and compliance purposes.

Q: How does the cylindrical package diameter affect mechanical compatibility?

A: The 0.5mm increase in diameter (12.0mm to 12.5mm) may affect mechanical fit in precision mounting fixtures, optical alignment assemblies, or mechanical housings. Physical verification of clearances is required before implementation.

Q: Is the active product status of VLM-650-07 LPA significant?

A: Yes. Active status indicates current manufacturing and ongoing availability. The obsolete status of 104990021 makes the active substitute necessary for long-term supply chain continuity and future production requirements.