SPMWH3228FD5WAWMS4 LED Warm White 2700K 2835 Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAWMS4 is a Samsung Semiconductor surface-mount LED in the 2835 metric package (1113 case code) emitting warm white light at 2700K color temperature. This component is classified as "Not For New Designs," indicating it has been superseded in Samsung's product portfolio. The LM281BZ series base platform delivers 63 lumens at 25°C under 150mA test current with 80 CRI and 120° viewing angle. Equivalent and substitute parts are available within the LM281B and LM281B+ series families, offering active product status alternatives with identical or improved electrical and optical characteristics.

Key Parameters

Parameter	Value	Unit
Color / CCT	White, Warm / 2700K	—
Flux @ 25°C, 150mA	63 (61–65)	lm
Forward Voltage (Typ)	3.1	V
Test Current	150	mA
Maximum Current	160	mA
Lumens/Watt @ 150mA	135	lm/W
CRI	80	—
Viewing Angle	120	°
Package / Case	1113 (2835 Metric)	—
Mounting Type	Surface Mount	—
Size	3.50 × 2.80	mm
Height (Max)	0.75	mm
Thermal Resistance	25	°C/W
RoHS Status	Compliant	—
MSL	2A (4 Weeks)	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Color and CCT (2700K warm white)
Flux output range (61–65 lm @ 25°C, 150mA)
Forward voltage compatibility (3.0–3.1V typical)
Test current (150mA nominal)
Maximum current rating (160mA)
Package / Case (1113 / 2835 metric)
Mounting type (Surface Mount)
Physical dimensions (3.50 × 2.80 mm, 0.75 mm max height)
CRI (80)
Viewing angle (120°)

Series Families Included:

LM281BZ (original series, Not For New Designs status)
LM281B (active status, legacy platform)
LM281B+ (active status, improved platform)
LM281BZ+ (active status, enhanced platform)

All substitute parts maintain identical optical output, thermal characteristics, and mechanical compatibility. Differences in product status and forward voltage (3.0V vs. 3.1V) do not affect functional interchangeability within the specified parameter envelope.

Parameter Comparison

Part Number	Series	Status	Vf (Typ) [V]	Flux @ 25°C [lm]	lm/W @ 150mA	Inventory [Pcs]
SPMWH3228FD5WAWMS4	LM281BZ	Not For New Designs	3.1	63	135	1083
SPMWH1228FD5WAWMS4	LM281B	Not For New Designs	3.1	63	135	7983
SPMWH1228FD5WAWUS4	LM281B	Not For New Designs	3.1	63	135	40403
SPMWH1228FD5WAWMSE	LM281B+	Active	3.1	63	135	741
SPMWH1228FD5WAW0SE	LM281B+	Active	3.1	63	135	871
SPMWH1228FD5WAWKSE	LM281B+	Active	3.1	63	135	704
SPMWH1228FD5WAWUSE	LM281B+	Active	3.0	63	140	780
SPMWH3228FD5WAW0SG	LM281BZ+	Active	3.0	63	140	969
SPMWH3228FD5WAWKSG	LM281BZ+	Active	3.0	63	140	1169
SPMWH3228FD5WAWMSG	LM281BZ+	Active	3.0	63	140	906

Engineering Selection Recommendations

For Active Product Status Designs:

Prioritize LM281B+ and LM281BZ+ series parts (Active status). These represent current Samsung product offerings and are suitable for new designs. Within this group:

SPMWH1228FD5WAWUS4 (LM281B, 40,403 pcs inventory) offers highest availability despite legacy status
SPMWH1228FD5WAWMSE, SPMWH1228FD5WAW0SE, SPMWH1228FD5WAWKSE (LM281B+, 3.1V) maintain exact electrical equivalence to the original part
SPMWH1228FD5WAWUSE, SPMWH3228FD5WAW0SG, SPMWH3228FD5WAWKSG, SPMWH3228FD5WAWMSG (LM281B+/LM281BZ+, 3.0V) deliver improved efficiency (140 lm/W vs. 135 lm/W)

Compliance Considerations:

All substitute parts are RoHS Compliant with MSL 2A (4 Weeks) rating. ECCN classification is EAR99 and HTSUS code is 8541.41.0000 across all variants. Thermal resistance remains constant at 25°C/W.

Voltage Tolerance:

The 0.1V difference between 3.1V and 3.0V forward voltage variants falls within typical LED circuit design margins. Selection between 3.0V and 3.1V variants depends on existing power supply and current-limiting circuit design; both are electrically compatible within standard LED driver specifications.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAWUS4 directly replace SPMWH3228FD5WAWMS4?

A: Yes. Both parts deliver 63 lumens at 2700K with 3.1V forward voltage, 150mA test current, and 120° viewing angle in identical 2835 metric packages. The base product number difference (SPMWH1228 vs. SPMWH3228) reflects internal Samsung platform designation but does not affect functional performance or mechanical fit.

Q: What is the difference between LM281B and LM281B+ series?

A: LM281B+ represents an improved platform within the same optical and electrical envelope. Both series maintain 63 lm output at 2700K with identical package dimensions. LM281B+ variants carry Active product status, while LM281B variants are classified as Not For New Designs. Electrical parameters remain equivalent.

Q: Are the 3.0V variants (LM281B+, LM281BZ+) compatible with circuits designed for 3.1V?

A: Yes, within standard LED circuit tolerances. The 0.1V difference is accommodated by typical current-limiting resistor or driver circuit design margins. Efficiency improves to 140 lm/W at 3.0V compared to 135 lm/W at 3.1V, resulting in lower power dissipation.

Q: What packaging difference exists between TR (Tape & Reel) and parts listed with no packaging specification?

A: Parts with "Tape & Reel (TR)" packaging are supplied on continuous tape for automated assembly. Parts with no packaging specification listed (SPMWH3228FD5WAW0SG, SPMWH3228FD5WAWKSG, SPMWH3228FD5WAWMSG) maintain identical component specifications; packaging format should be confirmed with supplier documentation.

Q: Which substitute offers the best inventory availability?

A: SPMWH1228FD5WAWUS4 (LM281B series) provides 40,403 pieces in stock, the highest availability across all equivalents. This part maintains full electrical and optical equivalence to the original SPMWH3228FD5WAWMS4.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitute parts carry RoHS Compliant status with MSL 2A (4 Weeks) moisture sensitivity rating, matching the original part's compliance profile.

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