SFH 4645-V Equivalent & Substitute Parts

Part Overview

The SFH 4645-V is an infrared (IR) emitter manufactured by ams-OSRAM USA INC., designed for applications requiring 950nm wavelength emission. This component operates at 1.5V forward voltage with a maximum DC forward current of 100mA and delivers 71mW/sr radiant intensity at rated current. The device is housed in a 2-SMD, No Lead surface mount package with a 24° viewing angle and side view orientation.

The SFH 4645-V maintains Active product status and carries ROHS3 compliance certification. Alternative components become necessary when design constraints require different electrical characteristics, packaging configurations, or thermal operating ranges.

Substiute Parts

SFH 4645-V

ams-OSRAM USA INC.In Stock: 1246SFH 4645-V Datasheet

Current PartRFQ

SFH 4045N

ams-OSRAM USA INC.In Stock: 20869SFH 4045N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SFH 4645-V is determined by the following critical parameters:

Primary Matching Criteria:

• Wavelength: 950nm (infrared spectrum match)
• Package Type: 2-SMD, No Lead surface mount configuration
• Mounting Type: Surface mount orientation
• Compliance: ROHS3 certification
• Regulatory Status: REACH Unaffected, EAR99 classification

Secondary Compatibility Factors:

• Forward voltage tolerance (Vf): 1.5V nominal
• Maximum forward current (If): 100mA rated
• Radiant intensity performance: 71mW/sr @ 100mA
• Viewing angle: 24° specification
• Operating temperature range: -40°C to 100°C

The SFH 4045N qualifies as a substitute based on matching wavelength, package configuration, surface mount type, and compliance certifications. Electrical parameter variations exist and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SFH 4645-V Selection Criteria:

• Applications requiring maximum forward current of 100mA
• Operating environments up to 100°C ambient temperature
• Designs utilizing standard SMD packaging without right-angle orientation
• Systems requiring 24° viewing angle specification
• Moisture sensitivity tolerance of MSL 2 (1 Year)

SFH 4045N Selection Criteria:

• Applications with forward current constraints of 70mA maximum
• Operating environments limited to 85°C maximum ambient temperature
• Designs compatible with right-angle surface mount orientation
• Systems tolerating 18° viewing angle specification
• Moisture sensitivity tolerance of MSL 3 (168 Hours)
• Tape & Reel packaging availability for high-volume production

Both components maintain Active product status and ROHS3 compliance. Selection between these parts depends on specific electrical current requirements, thermal operating range, and mechanical orientation constraints of the target application.

Frequently Asked Questions (FAQ)

Q: Can the SFH 4045N directly replace the SFH 4645-V in all applications?

A: Direct replacement is not universal. The SFH 4045N operates at reduced maximum forward current (70mA versus 100mA), lower maximum operating temperature (85°C versus 100°C), and narrower viewing angle (18° versus 24°). Applications designed for the full electrical and thermal specifications of the SFH 4645-V require evaluation before substitution.

Q: What are the key electrical differences between these parts?

A: The SFH 4645-V operates at 1.5V forward voltage with 100mA maximum current and 71mW/sr radiant intensity. The SFH 4045N operates at 1.6V forward voltage with 70mA maximum current and 90mW/sr radiant intensity at its rated current. These differences affect circuit design and power consumption calculations.

Q: Are both parts available in the same packaging?

A: Both components use 2-SMD, No Lead surface mount packages. However, the SFH 4045N includes right-angle mounting orientation, while the SFH 4645-V uses standard side view orientation. Packaging availability differs: SFH 4645-V is available in standard packaging, while SFH 4045N is available in Tape & Reel configuration.

Q: What is the temperature operating range difference?

A: The SFH 4645-V operates from -40°C to 100°C. The SFH 4045N operates from -40°C to 85°C. Applications requiring operation above 85°C ambient temperature must use the SFH 4645-V.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SFH 4645-V and SFH 4045N are ROHS3 compliant, REACH Unaffected, classified as EAR99, and share the same HTSUS code (8541.41.0000). Regulatory compliance is equivalent between these components.

Q: What viewing angle differences exist?

A: The SFH 4645-V provides a 24° viewing angle, while the SFH 4045N provides an 18° viewing angle. Applications requiring wider beam dispersion should use the SFH 4645-V.