SST-40-WCS-F50-N2702 Equivalent & Substitute Parts

Part Overview

The SST-40-WCS-F50-N2702 is a surface-mount LED from the SST-40-W series manufactured by Luminus Devices Inc. This cool white LED operates at 7000K color temperature with a forward voltage of 2.75V and test current of 700mA, delivering 310lm typical flux at 85°C. The component is housed in a 2020 (5050 Metric) SMD package with a 120° viewing angle. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or when alternative color temperature specifications are acceptable within application requirements.

Substiute Parts

SST-40-WCS-F50-N2702

Luminus Devices Inc.In Stock: 962SST-40-WCS-F50-N2702 Datasheet

Current PartRFQ

SST-40-WCS-F50-N4651

Luminus Devices Inc.In Stock: 1089SST-40-WCS-F50-N4651 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SST-40-WCS-F50-N2702 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Series: SST-40-W
• Forward Voltage (Vf Typ): 2.75V
• Test Current: 700mA
• Maximum Current: 5A
• Viewing Angle: 120°
• Package / Case: 2020 (5050 Metric)
• Mounting Type: Surface Mount
• Size / Dimension: 0.195" L x 0.195" W (4.95mm x 4.95mm)
• Height - Seated (Max): 0.113" (2.86mm)
• Thermal Resistance: 2.5°C/W
• CRI (Color Rendering Index): 70 (Typ)
• Lumens/Watt @ Test Current: 161 lm/W
• Flux @ 85°C (Typ): 310lm

Allowable Variation Parameter:

• Color Temperature (CCT): 6500K to 7000K range acceptable for cool white applications

The substitute part SST-40-WCS-F50-N4651 maintains identical electrical performance and mechanical specifications while operating at 6500K color temperature, representing a 500K shift within the cool white spectrum. This variation is permissible when application requirements allow for alternative color temperature within the cool white classification.

Parameter Comparison

Engineering Selection Recommendations

The SST-40-WCS-F50-N2702 maintains Active product status with full availability. The substitute part SST-40-WCS-F50-N4651 carries Obsolete status, indicating it is no longer in active production.

Both parts satisfy ROHS3 compliance requirements and carry identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited), eliminating moisture-related handling constraints for either component.

The primary distinction between the main part and substitute is the color temperature specification: 7000K versus 6500K. Both operate within the cool white LED classification. Selection between these parts depends on application color temperature requirements. The 500K difference represents a shift toward slightly warmer cool white output in the substitute part.

Packaging format differs between the two parts: the main part is supplied in Tape & Reel (TR) format, while the substitute is supplied in Cut Tape (CT) format. This distinction affects procurement and assembly handling but does not impact electrical or thermal performance.

Frequently Asked Questions (FAQ)

Q: Can SST-40-WCS-F50-N4651 be used as a direct replacement for SST-40-WCS-F50-N2702?

A: Electrical and mechanical compatibility is confirmed. Both parts share identical forward voltage (2.75V), test current (700mA), maximum current (5A), thermal resistance (2.5°C/W), and package dimensions (2020 / 5050 Metric). The color temperature difference (6500K versus 7000K) must be evaluated against application requirements. If the application specifies 7000K operation, the 6500K substitute introduces a color temperature shift that may not be acceptable.

Q: What is the significance of the Obsolete product status for SST-40-WCS-F50-N4651?

A: Obsolete status indicates the part is no longer manufactured. Existing inventory may be available through authorized distributors, but future procurement cannot be guaranteed. For new designs or long-term production requirements, the Active status SST-40-WCS-F50-N2702 is the preferred selection.

Q: Does the packaging format difference (Tape & Reel versus Cut Tape) affect component performance?

A: Packaging format does not affect electrical, thermal, or optical performance. The difference impacts procurement logistics and assembly line handling. Tape & Reel (TR) format is optimized for high-volume automated assembly, while Cut Tape (CT) format accommodates lower-volume or manual assembly processes.

Q: Are both parts RoHS3 compliant?

A: Yes. Both SST-40-WCS-F50-N2702 and SST-40-WCS-F50-N4651 carry ROHS3 Compliant certification, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the practical impact of the 500K color temperature difference?

A: The 7000K specification (main part) produces a cooler, more bluish-white output. The 6500K specification (substitute) produces a slightly warmer cool white output. In applications where color temperature is critical for visual perception or color matching, this 500K difference may be perceptible. In applications where cool white operation is specified without strict color temperature tolerance, the difference may be acceptable.

Q: Can the thermal resistance specification be relied upon for both parts?

A: Yes. Both parts specify identical thermal resistance of 2.5°C/W, indicating equivalent thermal performance under identical operating conditions and PCB thermal design.