STW8C2SA-NZ LED 3030 White SMD Equivalent & Substitute Parts

Part Overview

The STW8C2SA-NZ is a 3030 form factor white surface mount LED manufactured by Seoul Semiconductor Inc. This part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing production and design continuity. The STW8C2SA-NZ operates at 6.1V forward voltage with a 100mA test current and delivers a 120° viewing angle in a compact 1212 (3030 metric) package measuring 3.00mm x 3.00mm.

Key Parameters

Parameter	Value
Manufacturer Part Number	STW8C2SA-NZ
Manufacturer	Seoul Semiconductor Inc.
Series	3030
Color	White
Voltage - Forward (Vf) Typical	6.1V
Current - Test	100mA
Current - Maximum	200mA
Viewing Angle	120°
Package / Case	1212 (3030 Metric)
Size / Dimension	3.00mm x 3.00mm
Height - Seated (Max)	0.85mm
Thermal Resistance	10°C/W
CRI (Color Rendering Index)	80
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the STW8C2SA-NZ are identified based on strict electrical and mechanical parameter alignment within the 3030 LED category. The primary substitution criteria are:

Critical Parameters for Substitution:

Package / Case: 1212 (3030 Metric)
Color: White
Viewing Angle: 120°
Mounting Type: Surface Mount
Forward Voltage (Vf): 6.1V to 6.2V range
Current - Test: 100mA to 150mA range
Current - Maximum: 200mA
CRI: 80
RoHS3 Compliance

Substitute Categories:

Category 1: Direct Seoul Semiconductor Equivalents Parts STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY) are parametric equivalents from the same manufacturer with identical electrical specifications and package dimensions. These parts share the base product number STW8C2 and maintain active product status.

Category 2: Cross-Manufacturer Alternatives Parts GW PSLR31.EM-LR-XX33-1-150-R18 and GW PSLR31.EM-LR-XX35-1-150-R18 from ams-OSRAM USA INC. are parametric equivalents within the DURIS® S 5 series. These parts operate at slightly elevated test current (150mA vs. 100mA) and forward voltage (6.2V vs. 6.1V), with reduced package height (0.70mm vs. 0.85mm) and higher thermal resistance (17°C/W vs. 10°C/W).

Parameter Comparison

Parameter	STW8C2SA-NZ (Main)	STW8C2SB	STW8C2SB-NZ	STW8C2SB-NZ(DISTY)	GW PSLR31.EM-LR-XX33-1-150-R18	GW PSLR31.EM-LR-XX35-1-150-R18
Manufacturer	Seoul Semiconductor Inc.	Seoul Semiconductor Inc.	Seoul Semiconductor Inc.	Seoul Semiconductor Inc.	ams-OSRAM USA INC.	ams-OSRAM USA INC.
Series	3030	3030	3030	3030	DURIS® S 5	DURIS® S 5
Color	White	White	White	White	White	White
Voltage - Forward (Vf) Typical	6.1V	6.1V	6.1V	6.1V	6.2V	6.2V
Current - Test	100mA	100mA	100mA	100mA	150mA	150mA
Current - Maximum	200mA	200mA	200mA	200mA	200mA	200mA
Viewing Angle	120°	120°	120°	120°	120°	120°
Package / Case	1212 (3030 Metric)	1212 (3030 Metric)	1212 (3030 Metric)	1212 (3030 Metric)	1212 (3030 Metric)	1212 (3030 Metric)
Size / Dimension	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm
Height - Seated (Max)	0.85mm	0.80mm	0.80mm	0.80mm	0.70mm	0.70mm
Thermal Resistance	10°C/W	10°C/W	10°C/W	10°C/W	17°C/W	17°C/W
CRI (Color Rendering Index)	80	80	80	80	80	80
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Seoul Semiconductor STW8C2SB Series (Recommended Primary Substitutes)

The STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY) parts are direct parametric equivalents manufactured by Seoul Semiconductor Inc. and maintain active product status. These parts are identical in electrical performance to the obsolete STW8C2SA-NZ, with minor package height reduction (0.80mm vs. 0.85mm). All three variants are ROHS3 compliant and suitable for direct substitution in existing designs without circuit modification. The STW8C2SB-NZ(DISTY) variant offers the highest inventory availability at 1,094 pieces.

ams-OSRAM DURIS® S 5 Series (Cross-Manufacturer Alternative)

The GW PSLR31.EM-LR-XX33-1-150-R18 and GW PSLR31.EM-LR-XX35-1-150-R18 parts from ams-OSRAM USA INC. provide cross-manufacturer substitution within the same 3030 package envelope. These parts operate at 150mA test current versus 100mA for the original part, with forward voltage of 6.2V versus 6.1V. The reduced package height (0.70mm) and higher thermal resistance (17°C/W) require circuit evaluation for thermal management compatibility. Both variants are ROHS3 compliant with MSL rating of 3 (168 hours) and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can STW8C2SB parts be used as direct replacements for STW8C2SA-NZ?

A: Yes. The STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY) parts are parametric equivalents with identical electrical specifications (6.1V forward voltage, 100mA test current, 120° viewing angle) and package dimensions (3.00mm x 3.00mm). The 0.05mm reduction in seated height (0.80mm vs. 0.85mm) is within standard PCB assembly tolerances and does not affect functionality.

Q: What are the differences between STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY)?

A: These three part numbers represent the same component with different packaging or distribution designations. All three share identical electrical and mechanical specifications. Selection should be based on inventory availability and supply chain requirements.

Q: Can ams-OSRAM DURIS® S 5 parts replace Seoul Semiconductor 3030 parts?

A: The GW PSLR31.EM series parts are parametric equivalents within the 3030 package category but operate at different electrical specifications. The 150mA test current (vs. 100mA) and 6.2V forward voltage (vs. 6.1V) require circuit evaluation. The higher thermal resistance (17°C/W vs. 10°C/W) may impact thermal performance in high-density applications. Substitution is possible but requires design review.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (STW8C2SB series and GW PSLR31.EM series) are ROHS3 compliant, matching the compliance status of the original STW8C2SA-NZ part.

Q: What is the significance of the -NZ suffix in part numbers?

A: The -NZ suffix indicates a specific packaging or regional variant. STW8C2SB-NZ and STW8C2SB-NZ(DISTY) are functionally equivalent to STW8C2SB with identical electrical and mechanical parameters.

Q: Which substitute part has the best thermal characteristics?

A: The STW8C2SB series maintains the original thermal resistance of 10°C/W. The ams-OSRAM DURIS® S 5 series has higher thermal resistance at 17°C/W, which may require additional thermal management consideration in applications with high ambient temperatures or high current operation.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes, within the same manufacturer series (STW8C2SB variants). Cross-manufacturer substitution (Seoul Semiconductor to ams-OSRAM) requires circuit evaluation due to differences in test current, forward voltage, and thermal resistance. Package footprint compatibility is maintained across all parts (3.00mm x 3.00mm).

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