D6605I Equivalent & Substitute Parts

Part Overview

The D6605I is a 660nm laser diode rated at 5mW output power with a 40mA current rating, housed in a TO-18 radial can package with 3 leads. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The D6605I operates at a longer wavelength (660nm) compared to similar alternatives in the US-Lasers Inc. product line, which affects its application suitability in specific optical systems.

Substiute Parts

D6605I

US-Lasers Inc.In Stock: 815D6605I Datasheet

Current PartRFQ

D6505I

US-Lasers Inc.In Stock: 2192D6505I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D6605I is limited by the following critical parameters:

• Wavelength: The 660nm wavelength is application-specific and determines optical system compatibility. Substitutes must maintain this wavelength specification or operate within the same spectral range for the intended application.
• Power Output: The 5mW power rating is a functional requirement. Substitutes must match this specification.
• Package / Case: The TO-18 radial can with 3 leads (5.6mm) is a mechanical and electrical interface requirement. Substitutes must use identical packaging.
• Moisture Sensitivity Level: MSL 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.

The D6505I is listed as a substitute part; however, it operates at 650nm wavelength rather than 660nm. This represents a wavelength deviation of 10nm and a current rating reduction from 40mA to 20mA. Substitution is only valid if the application tolerates the shorter wavelength and reduced current requirements.

Parameter Comparison

Engineering Selection Recommendations

The D6505I is the identified substitute for the obsolete D6605I. Both components share identical mechanical packaging (TO-18, 3 lead, 5.6mm radial can) and identical power output (5mW). The D6505I is currently in active production status, ensuring availability for replacement and new designs.

Key differences requiring evaluation:

• Wavelength Shift: The D6505I operates at 650nm versus the D6605I's 660nm. This 10nm difference may impact optical system performance depending on application-specific wavelength requirements.
• Current Rating: The D6505I is rated at 20mA maximum current, compared to the D6605I's 40mA. This represents a 50% reduction in current capacity and may affect drive circuit design.
• Compliance: The D6505I carries ROHS3 compliance certification, providing regulatory advantage for new designs and systems subject to environmental compliance requirements.

Selection of the D6505I as a substitute is valid only when the application can accommodate the wavelength and current rating differences.

Frequently Asked Questions (FAQ)

Q: Can the D6505I directly replace the D6605I in existing designs?

A: Direct replacement is possible only if the application tolerates a 10nm wavelength shift (from 660nm to 650nm) and operates within the D6505I's 20mA current rating. The identical TO-18 package ensures mechanical and electrical interface compatibility.

Q: What is the significance of the wavelength difference between these parts?

A: The D6605I operates at 660nm (red spectrum), while the D6505I operates at 650nm (red spectrum, shorter wavelength). Applications requiring specific wavelength performance must verify that 650nm is acceptable for their optical system.

Q: Why is the D6605I obsolete while the D6505I remains active?

A: Product status reflects manufacturer production decisions. The D6505I's active status ensures ongoing availability and support, making it the preferred choice for new designs and long-term system support.

Q: Are there packaging differences between these laser diodes?

A: No. Both the D6605I and D6505I use identical TO-18 radial can packaging with 3 leads (5.6mm). Mechanical fit and PCB layout compatibility are maintained.

Q: What does ROHS3 compliance mean for the D6505I?

A: ROHS3 compliance indicates the D6505I meets Restriction of Hazardous Substances regulations, restricting specific hazardous materials. This certification is relevant for systems subject to environmental and regulatory compliance requirements.