OD-880FHT Infrared Emitter Equivalent & Substitute Parts

Part Overview

The OD-880FHT is an infrared (IR) emitter operating at 880nm wavelength, designed for through-hole mounting in TO-46-2 lens top metal can packaging. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The 880nm wavelength and 100mA forward current rating define its primary application scope in IR sensing and communication circuits.

Substiute Parts

OD-880FHT

Opto Diode CorpIn Stock: 1179OD-880FHT Datasheet

Current PartRFQ

OD-850FHT

Opto Diode CorpIn Stock: 1501OD-850FHT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the OD-880FHT is determined by the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: TO-46-2 Lens Top Metal Can
• Mounting Type: Through Hole
• Orientation: Top View
• Current - DC Forward (If) Max: 100mA
• Operating Temperature Range: -65°C to 150°C

Allowable Variation Parameters:

• Wavelength: Near-infrared spectrum (850nm to 880nm range acceptable for certain applications)
• Voltage - Forward (Vf): Tolerance within typical circuit design margins
• Viewing Angle: Application-dependent; wider angles acceptable in many configurations

The OD-850FHT qualifies as a substitute based on identical mechanical packaging, identical maximum forward current rating, identical operating temperature range, and identical moisture sensitivity classification. The wavelength difference (850nm vs. 880nm) and viewing angle difference (16° vs. 8°) represent the primary technical variations requiring application-level verification.

Parameter Comparison

Engineering Selection Recommendations

OD-850FHT Substitution Criteria:

The OD-850FHT is available as an active product with RoHS compliance certification, whereas the OD-880FHT is obsolete. Selection of the OD-850FHT as a substitute is based on:

1. Identical Electrical Ratings: Maximum forward current (100mA) and operating temperature range (-65°C to 150°C) are identical, ensuring circuit-level compatibility for power dissipation and thermal management calculations.

2. Identical Mechanical Packaging: Both components use TO-46-2 lens top metal can packaging with through-hole mounting and top-view orientation, permitting direct PCB footprint compatibility without layout modifications.

3. Identical Moisture Sensitivity: MSL 1 (Unlimited) classification for both parts ensures equivalent handling and storage requirements.

4. Active Product Status: The OD-850FHT maintains active product status with ongoing manufacturer support, addressing the obsolescence constraint of the OD-880FHT.

5. Compliance Certification: The OD-850FHT carries RoHS compliance status, meeting modern regulatory requirements.

Application-Level Considerations:

The wavelength difference (850nm vs. 880nm) and viewing angle difference (16° vs. 8°) must be evaluated within specific application requirements. These parameters do not preclude substitution but require confirmation that the receiving optical system and detector sensitivity accommodate the 850nm wavelength and the wider 16° viewing angle.

Frequently Asked Questions (FAQ)

Q: Can the OD-850FHT directly replace the OD-880FHT in existing designs?

A: Direct PCB-level replacement is possible due to identical TO-46-2 packaging, through-hole mounting, and electrical current/temperature ratings. However, system-level compatibility depends on whether the optical receiver and detection circuit are designed to operate at 850nm wavelength and accommodate the 16° viewing angle of the OD-850FHT.

Q: What is the significance of the wavelength difference between 880nm and 850nm?

A: Wavelength determines the spectral output of the IR emitter. The 30nm difference places both components within the near-infrared spectrum but may affect coupling efficiency with wavelength-specific photodiodes or detectors. Application-specific receiver characteristics must be confirmed.

Q: Does the viewing angle difference (8° vs. 16°) affect substitution?

A: The OD-850FHT has a wider viewing angle (16°) compared to the OD-880FHT (8°). This increases the spatial distribution of IR radiation. Substitution is valid if the application can tolerate or benefit from the wider beam pattern. Narrower-angle applications may experience reduced intensity at specific angles.

Q: Are there packaging or handling differences between these parts?

A: Both components share identical TO-46-2 lens top metal can packaging and MSL 1 (Unlimited) moisture sensitivity classification. No differences in handling, storage, or soldering procedures are required.

Q: What is the forward voltage difference, and does it affect circuit design?

A: The OD-850FHT has a typical forward voltage of 1.6V compared to 1.55V for the OD-880FHT, a difference of 0.05V. This minimal variation is within standard circuit design tolerances and does not require current-limiting resistor recalculation in most applications.

Q: Why is the OD-880FHT classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The OD-850FHT remains in active production, making it the recommended substitute for ongoing system support and new designs.