SFH 4651-Z Equivalent & Substitute Parts

Part Overview

The SFH 4651-Z is an Infrared (IR) Emitter operating at 860nm wavelength, manufactured by ams-OSRAM USA INC. This component is classified as an active product and is designed for surface mount applications requiring mid-range radiant intensity output. The SFH 4651-Z is packaged in a 2-SMD, No Lead configuration and operates across an industrial temperature range of -40°C to 100°C.

Substitute parts are identified when equivalent electrical performance can be achieved while maintaining compliance with industry standards and operational requirements. The SFH 4059-QS represents an alternative solution for applications where package form factor and thermal operating range modifications are acceptable trade-offs against increased radiant intensity output.

Substiute Parts

SFH 4651-Z

ams-OSRAM USA INC.In Stock: 1124SFH 4651-Z Datasheet

Current PartRFQ

SFH 4059-QS

ams-OSRAM USA INC.In Stock: 13073SFH 4059-QS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SFH 4651-Z is determined by the following critical electrical and mechanical parameters:

Matching Parameters (Required for Substitution):

• Wavelength: 860nm
• Maximum DC Forward Current: 70mA
• Typical Forward Voltage: 1.6V
• Viewing Angle: 20°
• Type: Infrared (IR) Emitter
• Mounting Type: Surface Mount
• RoHS3 Compliance

Variable Parameters (Acceptable Differences):

• Radiant Intensity output may vary within the specified operating current
• Package form factor may differ (2-SMD vs. 1206)
• Operating temperature range may be narrower
• Moisture Sensitivity Level classification may differ

The SFH 4059-QS qualifies as a substitute part because it maintains identical wavelength, forward current rating, forward voltage, viewing angle, and compliance certifications. Differences in radiant intensity (100mW/sr vs. 60mW/sr), package configuration (1206 vs. 2-SMD No Lead), and maximum operating temperature (85°C vs. 100°C) represent acceptable trade-offs for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SFH 4651-Z Selection Criteria:

• Applications requiring operation at maximum ambient temperature of 100°C
• Designs utilizing 2-SMD, No Lead package footprint
• Systems with extended storage requirements (1-year MSL rating)
• Specifications requiring minimum radiant intensity of 60mW/sr

SFH 4059-QS Selection Criteria:

• Applications where higher radiant intensity output (100mW/sr) provides system performance benefits
• Designs compatible with 1206 (3216 Metric) package form factor
• Systems operating within -40°C to 85°C temperature range
• Applications where increased radiant output justifies shorter moisture sensitivity window (168 hours)

Both parts maintain active product status and full ROHS3 compliance. Selection between these parts depends on specific application requirements regarding thermal operating range, package geometry, and radiant intensity performance.

Frequently Asked Questions (FAQ)

Q: Can the SFH 4059-QS replace the SFH 4651-Z in all applications?

A: The SFH 4059-QS is electrically compatible for applications operating within -40°C to 85°C. Applications requiring operation above 85°C ambient temperature must use the SFH 4651-Z. Additionally, the package form factor differs (1206 vs. 2-SMD No Lead), requiring PCB layout verification.

Q: What is the significance of the radiant intensity difference between these parts?

A: The SFH 4059-QS provides 100mW/sr compared to the SFH 4651-Z at 60mW/sr, both at 70mA forward current. This 40mW/sr increase in radiant intensity may improve detection range or signal strength in optical sensing applications. System design must account for this difference in optical performance.

Q: How do the package differences affect PCB design?

A: The SFH 4651-Z uses a 2-SMD, No Lead package while the SFH 4059-QS uses a 1206 (3216 Metric) package. These represent different physical footprints and land patterns. PCB layout, solder reflow profiles, and assembly processes may require modification when substituting between these packages.

Q: What does the Moisture Sensitivity Level (MSL) difference mean for storage?

A: The SFH 4651-Z carries MSL 2 (1 Year), allowing one year of storage at uncontrolled humidity before baking is required. The SFH 4059-QS carries MSL 3 (168 Hours), requiring baking after 168 hours of exposure to uncontrolled humidity. Storage and handling procedures must reflect these different moisture sensitivity classifications.

Q: Are both parts RoHS compliant?

A: Yes, both the SFH 4651-Z and SFH 4059-QS are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the maximum operating temperature for each part?

A: The SFH 4651-Z operates to 100°C maximum ambient temperature. The SFH 4059-QS operates to 85°C maximum ambient temperature. Applications requiring extended high-temperature operation must use the SFH 4651-Z.