VLM-650-16-LPT Equivalent & Substitute Parts

Part Overview

The VLM-650-16-LPT is a 650nm laser diode manufactured by Quarton Inc., rated at 4.6mW output power with 4V input and 40mA current consumption in an 8.5mm diameter cylinder package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and component procurement.

Substiute Parts

VLM-650-16-LPT

Quarton Inc.In Stock: 1002VLM-650-16-LPT Datasheet

Current PartRFQ

VOL6505I

US-Lasers Inc.In Stock: 1132VOL6505I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for laser diodes is determined by the following critical parameters:

• Wavelength: Must match at 650nm for optical system compatibility
• Current Rating: Must be compatible at 40mA to ensure proper diode operation
• Package Geometry: Physical dimensions affect mechanical fit and thermal management
• Output Power: Variance within acceptable operational range for the application
• Input Voltage: Must be compatible with existing drive circuitry

The VOL6505I from US-Lasers Inc. qualifies as a substitute based on matching wavelength (650nm) and current rating (40mA). Differences in output power (4.8mW vs 4.6mW) and package diameter (10.4mm vs 8.5mm) require mechanical and electrical validation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The VOL6505I is an active product with ROHS3 compliance, providing regulatory advantage over the obsolete, non-compliant VLM-650-16-LPT. Both components share identical wavelength and current specifications, establishing functional compatibility at the electrical level.

The 1.3mW increase in output power (4.8mW vs 4.6mW) and 1.9mm increase in package diameter must be evaluated against specific application requirements. Mechanical integration constraints and thermal management characteristics of the host system determine whether these dimensional and power differences are acceptable.

Frequently Asked Questions (FAQ)

Q: What makes VOL6505I a valid substitute for VLM-650-16-LPT?

A: Both components operate at 650nm wavelength with 40mA current rating, establishing core optical and electrical compatibility. The VOL6505I maintains the same ECCN and HTSUS classifications.

Q: How does the increased output power affect substitution?

A: The VOL6505I delivers 4.8mW compared to 4.6mW. This 37% increase in output power must be validated against the optical system design to ensure it does not exceed component or subsystem tolerances.

Q: What are the mechanical implications of the larger package diameter?

A: The VOL6505I uses a 10.4mm diameter cylinder versus the 8.5mm diameter of the VLM-650-16-LPT. Physical mounting fixtures, heat sinks, and optical alignment mechanisms must accommodate this 1.9mm increase in diameter.

Q: Does RoHS compliance affect substitution decisions?

A: The VOL6505I meets ROHS3 standards while the VLM-650-16-LPT does not. For applications subject to RoHS regulations, the VOL6505I provides regulatory compliance. For legacy systems without such requirements, both components remain functionally equivalent.

Q: Is input voltage compatibility confirmed?

A: The VLM-650-16-LPT specifies 4V input. The VOL6505I does not provide voltage specification in available data. Electrical validation is required to confirm drive circuit compatibility.