HFE4070-313 Fiber Optic Transmitter 850nm Equivalent & Substitute Parts

Part Overview

The HFE4070-313 is a fiber optic transmitter operating at 850nm wavelength, manufactured by Honeywell Sensing and Productivity Solutions. This component is designed for optical signal transmission applications requiring 1.7V forward voltage and 50mA maximum forward current. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations where this wavelength and performance envelope are required.

Substiute Parts

HFE4070-313

Honeywell Sensing and Productivity SolutionsIn Stock: 1102HFE4070-313 Datasheet

Current PartRFQ

OPF320A

TT Electronics/Optek TechnologyIn Stock: 692OPF320A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HFE4070-313 is determined by the following critical parameters:

Primary Matching Criteria:

• Wavelength: 850nm (core functional requirement)
• Forward voltage range compatibility
• Forward current capability
• Reverse voltage rating
• RoHS and environmental compliance status

The OPF320A from TT Electronics/Optek Technology shares the same 850nm wavelength specification, establishing it as a functionally equivalent alternative. Both components operate within the 850nm fiber optic transmission standard. Substitution eligibility is based on matching wavelength, compliance certifications, and electrical parameter compatibility within acceptable operating ranges for the application circuit.

Parameter Comparison

Engineering Selection Recommendations

HFE4070-313 (Honeywell): Obsolete status limits availability to existing inventory. RoHS Compliant certification confirms environmental compliance. Suitable for legacy system maintenance where original specifications must be maintained.

OPF320A (TT Electronics/Optek): Active product status ensures ongoing availability and supply chain continuity. ROHS3 Compliant certification meets current regulatory requirements. Higher forward current rating (100mA vs. 50mA) and increased forward voltage (2.0V vs. 1.7V) require circuit design verification. Lower reverse voltage rating (1V vs. 5V) must be evaluated against application requirements. Spectral bandwidth specification (35nm) is provided for OPF320A, enabling precise optical system design.

Selection between these components depends on application circuit design constraints, availability requirements, and compliance certification needs.

Frequently Asked Questions (FAQ)

Q: Can OPF320A directly replace HFE4070-313 in existing circuits?

A: Both components operate at 850nm wavelength and share MSL 1 rating. However, circuit compatibility requires verification of forward voltage (1.7V vs. 2.0V) and forward current (50mA vs. 100mA) operating points. The OPF320A reverse voltage rating (1V) is lower than HFE4070-313 (5V), requiring reverse bias circuit evaluation.

Q: What is the primary reason to consider OPF320A as an alternative?

A: HFE4070-313 is obsolete. OPF320A is an active product with confirmed supply availability, matching the critical 850nm wavelength specification and environmental compliance requirements.

Q: Are there packaging differences between these components?

A: HFE4070-313 packaging is not specified in available data. OPF320A is supplied in Bulk packaging with TO46 form factor. Mechanical compatibility must be confirmed for specific applications.

Q: Do both components meet RoHS requirements?

A: Yes. HFE4070-313 is RoHS Compliant. OPF320A is ROHS3 Compliant, meeting current regulatory standards.

Q: What is the significance of the spectral bandwidth parameter?

A: OPF320A spectral bandwidth is specified as 35nm. This parameter defines the optical signal width around the 850nm center wavelength. HFE4070-313 spectral bandwidth is not provided in available documentation.