OPF340B Equivalent & Substitute Parts

Part Overview

The OPF340B is a fiber optic transmitter operating at 850nm wavelength, designed for optical communication applications. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing system support and new designs. The OPF340A serves as the direct manufacturer-recommended substitute, offering identical electrical and optical specifications while maintaining active product status.

Substiute Parts

OPF340B

TT Electronics/Optek TechnologyIn Stock: 787OPF340B Datasheet

Current PartRFQ

OPF340A

TT Electronics/Optek TechnologyIn Stock: 1185OPF340A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPF340B is determined by matching the following critical parameters:

• Wavelength: 850nm (infrared spectrum for short-range optical communication)
• Spectral Bandwidth: 35nm (defines the optical signal width)
• Forward Voltage: 2V (electrical drive requirement)
• Maximum Forward Current: 100 mA (power consumption specification)
• Reverse Voltage Rating: 1V (reverse bias protection)
• Package: TO46 (physical form factor and pin configuration)

The OPF340A meets all these criteria identically, establishing it as a direct functional equivalent. Both components share the same base product number (OPF340) and are manufactured by TT Electronics/Optek Technology.

Parameter Comparison

Engineering Selection Recommendations

The OPF340A is the appropriate selection for applications currently using or specifying the OPF340B. Both components are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements. The transition from OPF340B to OPF340A involves no electrical or optical parameter changes, ensuring direct compatibility in existing circuit designs. The active product status of the OPF340A provides supply chain continuity and ongoing manufacturer support, addressing the obsolescence of the OPF340B.

Frequently Asked Questions (FAQ)

Q: Can OPF340A be used as a direct replacement for OPF340B? A: Yes. All electrical, optical, and physical parameters are identical. The OPF340A is the manufacturer-recommended substitute for the obsolete OPF340B.

Q: Are there any differences in packaging between these parts? A: Both components use TO46 package configuration. The OPF340A is supplied in Tray packaging, while OPF340B packaging details are not specified in the available data.

Q: Do these parts require different circuit design considerations? A: No. Identical forward voltage (2V), maximum forward current (100mA), and reverse voltage rating (1V) specifications mean no circuit modifications are necessary.

Q: Are both parts compliant with current environmental standards? A: Yes. Both OPF340B and OPF340A are ROHS3 compliant and REACH unaffected.

Q: What is the wavelength specification used for? A: The 850nm wavelength defines the infrared light frequency emitted by the transmitter, determining compatibility with corresponding fiber optic receivers and transmission media designed for this wavelength band.