OPF370B Equivalent & Substitute Parts

Part Overview

The OPF370B is a fiber optic transmitter operating at 850nm wavelength, manufactured by TT Electronics/Optek Technology. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement. The OPF370B is designed for applications requiring 850nm optical transmission with specified electrical and optical characteristics. Due to its obsolete status, the OPF370A serves as the manufacturer-recommended active alternative.

Substiute Parts

OPF370B

TT Electronics/Optek TechnologyIn Stock: 1218OPF370B Datasheet

Current PartRFQ

OPF370A

TT Electronics/Optek TechnologyIn Stock: 1287OPF370A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OPF370B is determined by matching the following critical parameters:

• Wavelength: 850nm
• Spectral Bandwidth: 35nm
• Voltage - Forward (Vf) Typical: 2V
• Current - DC Forward (If) Maximum: 100mA
• Voltage - DC Reverse (Vr) Maximum: 1V
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The OPF370A meets all specified electrical, optical, and compliance requirements. Both components share identical wavelength, bandwidth, voltage, and current characteristics. The OPF370A is the manufacturer-designated active product, whereas the OPF370B is obsolete. Both maintain equivalent RoHS3 compliance and MSL ratings.

Parameter Comparison

Engineering Selection Recommendations

The OPF370A is the appropriate substitute for the OPF370B based on the following factors:

• All electrical parameters are identical, ensuring direct functional equivalence in circuit applications.
• Both components maintain ROHS3 compliance and identical MSL ratings, satisfying regulatory and environmental requirements.
• The OPF370A is an active product with current manufacturer support, whereas the OPF370B is obsolete and subject to supply discontinuation.
• Optical characteristics (wavelength and spectral bandwidth) are matched, ensuring compatibility with existing receiver systems and fiber optic infrastructure.

Frequently Asked Questions (FAQ)

Q: Can the OPF370A directly replace the OPF370B in existing designs?

A: Yes. The OPF370A provides direct functional replacement. All electrical parameters, optical wavelength, and compliance certifications are identical. No circuit modifications are required.

Q: Are there packaging differences between OPF370B and OPF370A?

A: The OPF370B is specified with TO18 packaging, while the OPF370A is supplied in bulk packaging. Physical form factor compatibility must be verified for your specific application assembly requirements.

Q: What is the primary reason for substitution?

A: The OPF370B is classified as obsolete. The OPF370A is the manufacturer-recommended active alternative, ensuring long-term supply availability and continued technical support.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the OPF370B and OPF370A are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 1 (Unlimited).

Q: Are the optical characteristics identical?

A: Yes. Both components operate at 850nm wavelength with 35nm spectral bandwidth, ensuring compatibility with existing fiber optic receiver systems.