OPF345B Equivalent & Substitute Parts

Part Overview

The OPF345B is a fiber optic transmitter operating at 850nm wavelength, manufactured by TT Electronics/Optek Technology in a TO46 package. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement.

The OPF345B is designed for applications requiring 850nm fiber optic transmission with a forward voltage of 2V and maximum forward current of 100 mA. Due to its obsolete status, equivalent active components must be evaluated to maintain design continuity and supply chain reliability.

Substiute Parts

OPF345B

TT Electronics/Optek TechnologyIn Stock: 841OPF345B Datasheet

Current PartRFQ

OPF345A

TT Electronics/Optek TechnologyIn Stock: 1256OPF345A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPF345B is based on electrical and mechanical parameter equivalence. The primary substitution criteria are:

• Wavelength: 850nm (exact match required)
• Spectral Bandwidth: 35nm (exact match required)
• Forward Voltage (Vf): 2V (exact match required)
• Maximum Forward Current (If): 100 mA (exact match required)
• Reverse Voltage (Vr): 1V (exact match required)
• Package Type: TO46 (mechanical compatibility)
• Compliance Standards: ROHS3 Compliant, REACH Unaffected

The OPF345A meets all electrical and mechanical parameters specified for the OPF345B, with the distinction that OPF345A maintains active product status and is available in bulk packaging.

Parameter Comparison

Engineering Selection Recommendations

The OPF345A is the direct equivalent substitute for the OPF345B. Both components share identical electrical specifications and mechanical packaging, with full compliance to ROHS3 and REACH standards.

The primary distinction is product status: OPF345B is obsolete while OPF345A maintains active production status. For new designs or ongoing system support, OPF345A is the appropriate selection due to continued availability and manufacturer support.

Both components carry MSL Level 1 (Unlimited) moisture sensitivity classification, indicating no special moisture control requirements during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can OPF345A be used as a direct replacement for OPF345B? A: Yes. The OPF345A is electrically and mechanically equivalent to the OPF345B. All critical parameters—wavelength, forward voltage, forward current, reverse voltage, and package type—are identical.

Q: Why is OPF345B listed as obsolete? A: Product status reflects manufacturer lifecycle decisions. OPF345A represents the active equivalent within the same product family.

Q: Are there any compliance differences between OPF345B and OPF345A? A: No. Both components are ROHS3 Compliant and REACH Unaffected, with identical MSL Level 1 classification.

Q: What is the packaging difference between these parts? A: OPF345B is available in standard packaging, while OPF345A is supplied in bulk packaging. Both use the TO46 package format.

Q: Are there any electrical performance differences? A: No. Forward voltage, forward current, reverse voltage, wavelength, and spectral bandwidth are identical across both components.