SFH 4655-Z Equivalent & Substitute Parts

Part Overview

The SFH 4655-Z is an Infrared (IR) Emitter operating at 860nm wavelength, manufactured by ams-OSRAM USA INC. This component is designed for applications requiring surface-mounted infrared emission with a forward current rating of 100mA and typical forward voltage of 1.5V. The device is packaged in a 2-SMD, No Lead configuration with a 30° viewing angle and side-view orientation.

The SFH 4655-Z maintains Active product status and is ROHS3 compliant. Alternative equivalent parts may be required when application constraints necessitate different mounting technologies, packaging formats, or radiant intensity specifications while maintaining core electrical compatibility.

Substiute Parts

SFH 4655-Z

ams-OSRAM USA INC.In Stock: 80440SFH 4655-Z Datasheet

Current PartRFQ

SFH 4350

ams-OSRAM USA INC.In Stock: 15337SFH 4350 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFH 4655-Z is determined by the following core electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Wavelength: 860nm (fixed requirement)
• Maximum DC Forward Current: 100mA (fixed requirement)
• Typical Forward Voltage: 1.5V (fixed requirement)
• Operating Temperature Range: -40°C ~ 100°C (fixed requirement)

Mechanical Compatibility Criteria:

• Mounting technology (Surface Mount vs. Through Hole)
• Package format (2-SMD, No Lead vs. Radial)
• Viewing angle and orientation characteristics
• Radiant intensity specifications

The SFH 4350 qualifies as an equivalent substitute when application design permits transition from surface-mount to through-hole mounting technology. Both components share identical wavelength, forward current rating, forward voltage, and operating temperature specifications. Differences in radiant intensity (200mW/sr vs. 90mW/sr) and viewing angle (26° vs. 30°) reflect distinct package geometries and are not substitution barriers when the application accommodates through-hole assembly.

Parameter Comparison

Engineering Selection Recommendations

Both the SFH 4655-Z and SFH 4350 maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and regulatory alignment for new designs.

SFH 4655-Z Selection Criteria:

• Applications requiring surface-mount assembly on PCBs
• Designs with space constraints favoring compact 2-SMD, No Lead packaging
• Systems utilizing automated pick-and-place manufacturing processes
• Applications requiring side-view optical orientation

SFH 4350 Selection Criteria:

• Applications utilizing through-hole assembly technology
• Designs where higher radiant intensity (200mW/sr) provides system performance advantages
• PCB layouts accommodating radial lead spacing
• Systems requiring top-view optical orientation
• Applications where through-hole mounting provides mechanical robustness

Component selection between these equivalents depends on PCB assembly methodology and mechanical mounting requirements rather than electrical performance, as both devices operate identically within their respective package constraints.

Frequently Asked Questions (FAQ)

Q: Can the SFH 4350 directly replace the SFH 4655-Z on an existing PCB?

A: Direct PCB replacement is not possible. The SFH 4655-Z uses surface-mount 2-SMD, No Lead packaging, while the SFH 4350 uses through-hole radial packaging. PCB layout and footprint modifications are required for substitution.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Both components share identical wavelength (860nm), maximum forward current (100mA), typical forward voltage (1.5V), and operating temperature range (-40°C ~ 100°C). Radiant intensity and viewing angle differ due to package geometry, not electrical design.

Q: What is the significance of the radiant intensity difference (90mW/sr vs. 200mW/sr)?

A: Radiant intensity variation reflects the optical characteristics of each package design. The SFH 4350 radial package produces higher radiant intensity at the same forward current. Application optical requirements determine whether this difference is relevant to system performance.

Q: Are both parts suitable for new designs?

A: Yes. Both the SFH 4655-Z and SFH 4350 maintain Active product status, confirming manufacturer support for new applications. Selection depends on assembly technology preference and mechanical design constraints.

Q: What is the moisture sensitivity difference between these parts?

A: The SFH 4655-Z carries MSL 2 (1 Year) rating, while the SFH 4350 carries MSL 1 (Unlimited). This reflects packaging differences; the through-hole radial package of the SFH 4350 exhibits lower moisture sensitivity than the surface-mount package of the SFH 4655-Z.

Q: Can these parts be used interchangeably in circuit design?

A: Circuit-level electrical interchangeability is confirmed. Both components operate at identical voltage and current specifications. Physical mounting and optical orientation differences require design consideration but do not affect electrical circuit function.