PL 450B Laser Diode Equivalent & Substitute Parts

Part Overview

The PL 450B is a 450nm laser diode manufactured by ams-OSRAM USA INC., rated at 80mW output power with a 7V input voltage and 125mA current rating. This component is housed in a radial, can-style 3-lead package. The product is currently classified as obsolete, necessitating identification of active equivalent components for ongoing applications and new designs. Substitute parts must maintain functional compatibility across wavelength, power output, and electrical characteristics while accommodating package and form factor variations.

Substiute Parts

PL 450B

ams-OSRAM USA INC.In Stock: 888PL 450B Datasheet

Current PartRFQ

PLT3 450GB

ams-OSRAM USA INC.In Stock: 1153PLT3 450GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PL 450B laser diode is determined by the following critical parameters:

Wavelength Matching: The 450nm blue laser wavelength is the primary functional requirement. Substitute components must operate at the same wavelength to maintain optical system compatibility.

Power Output Compatibility: The 80mW output power establishes the baseline performance specification. Substitute parts may exceed this rating while maintaining the same wavelength and electrical interface characteristics.

Electrical Interface: Input voltage and current ratings define the drive circuit requirements. Substitute components must operate within compatible voltage and current ranges to function with existing power delivery systems.

Package Configuration: The radial, can-style 3-lead package determines mechanical fit and thermal management approach. Substitute parts may utilize alternative industry-standard packages (such as TO-38-3 metal can) provided the electrical leads and thermal characteristics remain compatible with the application circuit.

Compliance and Status: Active product status and maintained certifications (RoHS3, REACH) ensure long-term availability and regulatory compliance for new designs and production runs.

Parameter Comparison

Engineering Selection Recommendations

The PLT3 450GB serves as the manufacturer-recommended substitute for the obsolete PL 450B laser diode. Both components are manufactured by ams-OSRAM USA INC. and operate at the identical 450nm wavelength, ensuring optical compatibility.

The PLT3 450GB is classified as an active product, providing assured long-term availability and supply chain continuity compared to the obsolete PL 450B. The substitute component delivers 110mW output power, exceeding the original 80mW specification while maintaining comparable electrical drive requirements (6.5V input, 120mA current versus 7V and 125mA respectively).

The primary design consideration is the package transition from radial, can-style 3-lead to TO-38-3 metal can configuration. This change requires mechanical redesign of the component mounting and thermal interface but does not affect electrical functionality or optical performance.

Both components maintain RoHS3 compliance, supporting regulatory requirements for new product development and manufacturing operations.

Frequently Asked Questions (FAQ)

Q: Can the PLT3 450GB directly replace the PL 450B without circuit modifications?

A: The PLT3 450GB is electrically compatible with the PL 450B across the critical parameters of wavelength, power output, and current/voltage ratings. However, the package change from radial, can-style 3-lead to TO-38-3 metal can requires mechanical redesign of the mounting interface and thermal management system. The electrical drive circuit may operate the substitute component without modification, but physical integration requires component-level redesign.

Q: What is the significance of the power output increase from 80mW to 110mW?

A: The PLT3 450GB delivers 37.5% higher optical power output while maintaining the same 450nm wavelength. This increased power output is compatible with applications designed for the original 80mW specification, as the substitute component exceeds the baseline performance requirement. Applications requiring precise power output control must implement appropriate optical attenuation or drive current limiting to match the original 80mW specification if necessary.

Q: Are there compliance differences between the PL 450B and PLT3 450GB?

A: The PL 450B is explicitly specified as ROHS3 compliant with REACH unaffected status. The PLT3 450GB compliance specifications are not provided in the available data. Verification of RoHS3 and REACH compliance for the PLT3 450GB is required for applications subject to regulatory requirements.

Q: What is the impact of the voltage difference between 7V and 6.5V?

A: The PLT3 450GB operates at 6.5V compared to the PL 450B at 7V, representing a 7.1% reduction in nominal drive voltage. This difference reflects the improved efficiency of the substitute component. Existing power supply circuits designed for 7V operation remain compatible, as the 0.5V margin is within typical power supply regulation tolerances. Applications with strict voltage regulation requirements should verify that the 6.5V nominal specification aligns with available power delivery systems.

Q: How does the current rating change affect circuit design?

A: The PLT3 450GB is rated at 120mA compared to the PL 450B at 125mA, a 4% reduction in maximum current. This minor difference does not significantly impact circuit design. Existing current-limiting circuits and power supply designs for the original component remain compatible with the substitute.

Q: What is the moisture sensitivity level implication for storage and handling?

A: The PL 450B specifies MSL 2 (1 Year), indicating the component requires controlled moisture exposure during storage and handling. This specification applies to the original component. Equivalent moisture sensitivity requirements for the PLT3 450GB are not provided in the available data and should be confirmed with the manufacturer for proper storage and assembly procedures.