SFH 551/1-1 Equivalent & Substitute Parts

Part Overview

The SFH 551/1-1 is a fiber optic receiver manufactured by Infineon Technologies, designed for general purpose applications with a data rate of 5Mbps. This component operates within a supply voltage range of 4.75V to 5.25V and features a minimum receivable power of -22dBm with a supply current of 4 mA. The product is currently classified as obsolete, making identification of suitable substitute components essential for system redesign, maintenance, and procurement planning.

Substiute Parts

SFH 551/1-1

Infineon TechnologiesIn Stock: 918SFH 551/1-1 Datasheet

Current PartRFQ

IF-D97

Industrial Fiber OpticsIn Stock: 1846IF-D97 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFH 551/1-1 is determined by compatibility across the following critical parameters:

• Supply Voltage Compatibility: The substitute must operate within or encompass the 4.75V to 5.25V range
• Application Category: Both components must serve general purpose fiber optic receiver functions
• Fiber Optic Interface: Both components must support fiber optic signal reception
• ECCN and HTSUS Classification: Regulatory alignment ensures procurement and export compliance

The IF-D97 from Industrial Fiber Optics qualifies as a substitute based on matching supply voltage range (4.75V ~ 5.25V), identical application classification (General Purpose), and aligned regulatory codes (ECCN: EAR99, HTSUS: 8541.49.9500).

Parameter Comparison

Engineering Selection Recommendations

The IF-D97 is available as an active product with current manufacturing support, addressing the obsolescence status of the SFH 551/1-1. Both components share identical supply voltage specifications (4.75V ~ 5.25V) and regulatory classifications (ECCN: EAR99, HTSUS: 8541.49.9500), ensuring electrical and compliance compatibility.

The IF-D97 offers ROHS3 compliance, whereas the SFH 551/1-1 is RoHS non-compliant. This distinction is relevant for applications subject to RoHS directives. The IF-D97 operates at a higher data rate (50Mbps versus 5Mbps) and exhibits higher supply current consumption (40 mA versus 4 mA), reflecting enhanced performance capabilities. The minimum receivable power specification differs by 5dBm (-17dBm for IF-D97 versus -22dBm for SFH 551/1-1).

Frequently Asked Questions (FAQ)

Q: Can the IF-D97 directly replace the SFH 551/1-1 in existing designs?

A: Both components operate within the same supply voltage range (4.75V ~ 5.25V) and serve general purpose fiber optic receiver applications. However, the IF-D97 draws 40 mA compared to the SFH 551/1-1's 4 mA, requiring verification that power supply capacity is adequate. Pinout and packaging compatibility must be confirmed through detailed datasheets before implementation.

Q: What are the key differences between these two fiber optic receivers?

A: The IF-D97 provides a tenfold increase in data rate (50Mbps versus 5Mbps) and operates with a higher minimum receivable power threshold (-17dBm versus -22dBm). Supply current consumption increases from 4 mA to 40 mA. The IF-D97 is ROHS3 compliant while the SFH 551/1-1 is not. Both share identical regulatory classifications.

Q: Why is the SFH 551/1-1 classified as obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production and support. The IF-D97 represents an active alternative with ongoing manufacturing availability and technical support.

Q: Are there packaging considerations when substituting these components?

A: The IF-D97 is supplied in Tube packaging. Packaging format compatibility with existing assembly processes and equipment must be evaluated during design transition planning.

Q: Do both components meet the same regulatory requirements?

A: Both components share identical ECCN (EAR99) and HTSUS (8541.49.9500) classifications, ensuring regulatory alignment. The IF-D97 provides enhanced RoHS compliance (ROHS3) compared to the SFH 551/1-1 (RoHS non-compliant). Both are REACH Unaffected.