STW8C2SB(P) LED 3030 White SMD Equivalent & Substitute Parts

Part Overview

The STW8C2SB(P) is a 3030 metric white surface mount LED manufactured by Seoul Semiconductor Inc. This component is classified as obsolete product status. Due to its obsolete classification, identifying active equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and ongoing support of existing applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	STW8C2SB(P)
Manufacturer	Seoul Semiconductor Inc.
Series	3030
Color	White
Package / Case	1212 (3030 Metric)
Size / Dimension	0.118" L x 0.118" W (3.00mm x 3.00mm)
Height - Seated (Max)	0.031" (0.80mm)
Voltage - Forward (Vf) (Typ)	6.1V
Current - Test	100mA
Current - Max	200mA
Viewing Angle	120°
CRI (Color Rendering Index)	80
Thermal Resistance of Package	10°C/W
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the STW8C2SB(P) are identified based on strict parametric equivalence across the following critical criteria:

Primary Matching Parameters:

Package / Case: 1212 (3030 Metric)
Color: White
Mounting Type: Surface Mount
Viewing Angle: 120°
CRI: 80
RoHS Status: ROHS3 Compliant

Electrical Compatibility Parameters:

Voltage - Forward (Vf) (Typ): 6.1V to 6.2V range
Current - Max: 200mA
Current - Test: 100mA to 150mA range

Substitute parts are grouped into two categories: direct parametric equivalents from Seoul Semiconductor Inc. (same manufacturer, identical specifications) and cross-manufacturer alternatives from ams-OSRAM USA INC. that maintain electrical and mechanical compatibility within the specified parameter ranges.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vf (Typ)	Current - Test	Current - Max	Package	Height (Max)	Thermal Resistance	CRI	Viewing Angle
STW8C2SB(P)	Seoul Semiconductor Inc.	Obsolete	6.1V	100mA	200mA	1212 (3030)	0.031" (0.80mm)	10°C/W	80	120°
STW8C2SB	Seoul Semiconductor Inc.	Active	6.1V	100mA	200mA	1212 (3030)	0.031" (0.80mm)	10°C/W	80	120°
STW8C2SB-NZ	Seoul Semiconductor Inc.	Active	6.1V	100mA	200mA	1212 (3030)	0.031" (0.80mm)	10°C/W	80	120°
STW8C2SB-NZ(DISTY)	Seoul Semiconductor Inc.	Active	6.1V	100mA	200mA	1212 (3030)	0.031" (0.80mm)	10°C/W	80	120°
GW PSLR31.EM-LR-XX33-1-150-R18	ams-OSRAM USA INC.	Active	6.2V	150mA	200mA	1212 (3030)	0.028" (0.70mm)	17°C/W	80	120°
GW PSLR31.EM-LR-XX35-1-150-R18	ams-OSRAM USA INC.	Active	6.2V	150mA	200mA	1212 (3030)	0.028" (0.70mm)	17°C/W	80	120°

Engineering Selection Recommendations

Seoul Semiconductor Inc. Direct Equivalents (STW8C2SB, STW8C2SB-NZ, STW8C2SB-NZ(DISTY)): These parts provide identical electrical and mechanical specifications to the obsolete STW8C2SB(P). All three variants are active product status and ROHS3 compliant. Selection among these three should be based on availability and supply chain requirements. The STW8C2SB offers the highest inventory availability (178,900 pcs), making it the primary recommendation for new designs and production continuity.

ams-OSRAM USA INC. Cross-Manufacturer Alternatives (GW PSLR31.EM-LR-XX33-1-150-R18, GW PSLR31.EM-LR-XX35-1-150-R18): These DURIS® S 5 series parts maintain package compatibility and electrical parameters within acceptable ranges. Forward voltage is 6.2V (0.1V higher than the original), and test current is 150mA (50mA higher). Both parts are active product status, ROHS3 compliant, and include REACH Unaffected certification. Thermal resistance is higher at 17°C/W compared to 10°C/W for Seoul Semiconductor parts. These alternatives are suitable when Seoul Semiconductor parts are unavailable, provided thermal design margins accommodate the increased thermal resistance.

Frequently Asked Questions (FAQ)

Q: Can STW8C2SB(P) be directly replaced with STW8C2SB? A: Yes. STW8C2SB is a direct parametric equivalent with identical electrical and mechanical specifications. The primary difference is product status: STW8C2SB(P) is obsolete while STW8C2SB is active. Both share the same base product number STW8C2.

Q: What is the difference between STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY)? A: All three variants are parametrically identical with matching electrical and mechanical specifications. The suffix designations indicate different packaging or distribution channels. Selection should be based on availability and supply chain logistics.

Q: Can ams-OSRAM GW PSLR31.EM parts replace Seoul Semiconductor STW8C2SB(P)? A: Yes, with design considerations. Both GW PSLR31.EM variants maintain the 1212 (3030 metric) package, 120° viewing angle, and 80 CRI specification. However, forward voltage is 0.1V higher (6.2V vs 6.1V), test current is 50mA higher (150mA vs 100mA), and thermal resistance is 7°C/W higher (17°C/W vs 10°C/W). Circuit design must accommodate these parameter differences.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts, including the Seoul Semiconductor and ams-OSRAM variants, are ROHS3 compliant.

Q: What is the significance of the thermal resistance difference between Seoul Semiconductor and ams-OSRAM parts? A: Thermal resistance of 10°C/W (Seoul Semiconductor) versus 17°C/W (ams-OSRAM) affects heat dissipation characteristics. Higher thermal resistance means greater temperature rise for the same power dissipation. Thermal design analysis is required if switching to ams-OSRAM parts in applications with tight thermal constraints.

Q: Are the ams-OSRAM parts available in the same package dimensions? A: Both package and case designations are identical (1212 / 3030 metric, 3.00mm x 3.00mm). However, seated height differs: ams-OSRAM parts are 0.028" (0.70mm) versus Seoul Semiconductor at 0.031" (0.80mm). This 0.003" difference must be verified against PCB assembly clearances and solder reflow profiles.

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