VSMF4720-GS08 Equivalent & Substitute Parts

Part Overview

The VSMF4720-GS08 is an infrared (IR) emitter operating at 870nm wavelength, manufactured by Vishay Semiconductor Opto Division. This component is designed for applications requiring surface-mount infrared emission with a 100mA maximum forward current and 120° viewing angle. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

VSMF4720-GS08

Vishay Semiconductor Opto DivisionIn Stock: 3142VSMF4720-GS08 Datasheet

Current PartRFQ

SIR67-21C/TR8

Everlight Electronics Co LtdIn Stock: 1300SIR67-21C/TR8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VSMF4720-GS08 is determined by the following critical parameters:

• Wavelength compatibility: Near-infrared spectrum alignment (870nm ± tolerance)
• Package / Case: Identical 2-SMD, J-Lead form factor for direct PCB replacement
• Viewing Angle: 120° optical beam pattern consistency
• Mounting Type: Surface mount technology compatibility
• Environmental compliance: RoHS3 and MSL ratings for manufacturing process compatibility

The SIR67-21C/TR8 from Everlight Electronics Co Ltd meets these substitution criteria within the allowed parameter ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

The SIR67-21C/TR8 is suitable as a substitute for the VSMF4720-GS08 based on the following factors:

• Package compatibility: Both components use identical 2-SMD, J-Lead packaging, enabling direct PCB footprint replacement without layout modifications.
• Optical characteristics: Both emitters maintain 120° viewing angle and operate in the near-infrared spectrum (870nm vs 875nm), with wavelength separation within typical application tolerances.
• Environmental compliance: Both components meet ROHS3 requirements and carry identical MSL ratings, ensuring compatibility with standard manufacturing processes.
• Product status: The SIR67-21C/TR8 maintains active product status with current inventory availability, providing long-term supply chain continuity.

Design considerations must account for differences in maximum forward current (100mA vs 65mA) and forward voltage (1.45V vs 1.3V). Circuit designs must be evaluated to confirm operation within the substitute component's electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the SIR67-21C/TR8 be used as a direct drop-in replacement for the VSMF4720-GS08?

A: The SIR67-21C/TR8 shares identical package geometry (2-SMD, J-Lead) and viewing angle (120°), enabling physical PCB replacement. However, circuit design verification is required to confirm operation within the substitute's maximum forward current rating of 65mA versus the original 100mA specification.

Q: What is the wavelength difference between these components?

A: The VSMF4720-GS08 operates at 870nm while the SIR67-21C/TR8 operates at 875nm. This 5nm difference falls within typical near-infrared application tolerances but must be evaluated for specific optical system requirements.

Q: Are both components suitable for the same operating temperature range?

A: The VSMF4720-GS08 operates from -40°C to 85°C, while the SIR67-21C/TR8 operates from -25°C to 85°C. Applications requiring operation below -25°C must use the original component or identify alternative substitutes with extended low-temperature ratings.

Q: Do both components meet the same environmental compliance standards?

A: Yes. Both the VSMF4720-GS08 and SIR67-21C/TR8 are ROHS3 compliant with MSL rating 3 (168 Hours), ensuring compatibility with standard surface-mount manufacturing processes.

Q: What packaging format is the SIR67-21C/TR8 supplied in?

A: The SIR67-21C/TR8 is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Confirm packaging compatibility with your manufacturing equipment and procurement requirements.