LED 3030 White SMD STW9C1SB Equivalent & Substitute Parts

Part Overview

The STW9C1SB is a 3030 white surface mount LED manufactured by Seoul Semiconductor Inc. This component is an active product designed for LED lighting applications requiring a 1212 (3030 metric) package format. The part operates at 2.8V forward voltage with a 65mA test current and delivers a 120° viewing angle with CRI 90 color rendering. Finding equivalent substitute parts may be necessary due to inventory constraints, supply chain considerations, or application-specific requirements for alternative thermal or current handling characteristics.

Substiute Parts

STW9C1SB

Seoul Semiconductor Inc.In Stock: 63839STW9C1SB Datasheet

Current PartRFQ

GW CSSRM3.CM-M8N4-XX53-1-700-R-R18

ams-OSRAM USA INC.In Stock: 1612GW CSSRM3.CM-M8N4-XX53-1-700-R-R18 Datasheet

Parametric EquivalentRFQ

GW CSSRM3.CM-M9N4-A232-1-700-R-R33

ams-OSRAM USA INC.In Stock: 1009GW CSSRM3.CM-M9N4-A232-1-700-R-R33 Datasheet

Parametric EquivalentRFQ

GW CSSRM3.CM-MFN4-A232-1-700-R33

ams-OSRAM USA INC.In Stock: 3263GW CSSRM3.CM-MFN4-A232-1-700-R33 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the STW9C1SB are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Color: White
• Package / Case: 1212 (3030 Metric)
• Voltage - Forward (Vf) (Typ): 2.8V
• Viewing Angle: 120°
• CRI (Color Rendering Index): 90
• Mounting Type: Surface Mount
• Size / Dimension: 0.118" L x 0.118" W (3.00mm x 3.00mm)

Allowable Variation Parameters:

• Current - Test: Higher test current ratings are acceptable for applications requiring increased brightness or performance headroom
• Current - Max: Higher maximum current ratings provide additional operational margin
• Thermal Resistance of Package: Lower thermal resistance values indicate improved heat dissipation capability
• Height - Seated (Max): Variation within mechanical assembly constraints

All substitute parts listed are ams-OSRAM USA INC. OSLON® Square series components that maintain identical electrical characteristics at the specified test current while offering enhanced thermal management and higher maximum current ratings.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original STW9C1SB component.

The ams-OSRAM OSLON® Square series substitutes (GW CSSRM3.CM-M8N4-XX53-1-700-R-R18, GW CSSRM3.CM-M9N4-A232-1-700-R-R33, and GW CSSRM3.CM-MFN4-A232-1-700-R33) provide identical electrical performance at the specified test current while offering superior thermal management with 2°C/W thermal resistance compared to the 10°C/W of the original part. These components support higher maximum current ratings (1.8A versus 400mA), enabling operation at elevated brightness levels or providing additional design margin for thermal stress conditions.

Height variation from 0.80mm to 2.09mm must be evaluated against mechanical assembly constraints and PCB layout requirements. Applications with strict height limitations may require design review before substitution.

All substitute parts are supplied in Tape & Reel packaging format, suitable for automated assembly processes. Moisture Sensitivity Level (MSL) 2 (1 Year) and REACH Unaffected status apply to all substitute components.

Frequently Asked Questions (FAQ)

Q: Can the ams-OSRAM OSLON® Square parts directly replace the Seoul Semiconductor STW9C1SB?

A: Yes, the three ams-OSRAM OSLON® Square parts (GW CSSRM3.CM-M8N4-XX53-1-700-R-R18, GW CSSRM3.CM-M9N4-A232-1-700-R-R33, and GW CSSRM3.CM-MFN4-A232-1-700-R33) are parametric equivalents. They share identical color, package format, forward voltage, viewing angle, and CRI specifications. The primary differences are enhanced thermal performance and higher maximum current ratings.

Q: What is the significance of the higher test current (700mA) in the substitute parts?

A: The substitute parts are tested at 700mA rather than 65mA. This reflects the higher performance capability of the OSLON® Square design. At the original 65mA test current, these parts will operate identically to the STW9C1SB. The higher test current specification indicates the component can sustain elevated brightness levels without degradation.

Q: How does the thermal resistance difference affect component selection?

A: The substitute parts feature 2°C/W thermal resistance compared to 10°C/W for the original part. Lower thermal resistance improves heat dissipation from the LED junction to the PCB, reducing junction temperature rise during operation. This is beneficial for applications operating at elevated ambient temperatures or requiring extended component lifespan.

Q: Are there mechanical compatibility concerns with the increased height?

A: The substitute parts have a maximum seated height of 2.09mm compared to 0.80mm for the original STW9C1SB. Applications with strict height constraints (such as thin-profile assemblies or specific mechanical enclosures) must verify that the increased height does not conflict with design requirements before substitution.

Q: Do all substitute parts have identical specifications?

A: Yes. GW CSSRM3.CM-M8N4-XX53-1-700-R-R18, GW CSSRM3.CM-M9N4-A232-1-700-R-R33, and GW CSSRM3.CM-MFN4-A232-1-700-R33 share identical electrical, optical, and thermal characteristics. Part number variations reflect different internal configurations or manufacturing batches but do not affect functional performance or substitution capability.

Q: What packaging format is used for the substitute parts?

A: All substitute parts are supplied in Tape & Reel (TR) format, standard for automated assembly processes. This differs from the original part's packaging designation but is compatible with standard pick-and-place equipment.

Q: Are compliance certifications maintained across all substitute parts?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original STW9C1SB component. Moisture Sensitivity Level (MSL) 2 (1 Year) applies to all substitute components.