SPMWH3228FD5WARMS2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WARMS2 is a Samsung Semiconductor 2835 metric package surface mount LED with LM281BZ series specification. This component delivers cool white light at 5000K color temperature with 61 lumens at 25°C operating conditions. The part is classified as "Not For New Designs," indicating it has reached end-of-life status in Samsung's product portfolio. Equivalent substitute parts are available with identical or superior electrical and mechanical characteristics to support ongoing production requirements and design continuity.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	SPMWH3228FD5WARMS2	—
Manufacturer	Samsung Semiconductor, Inc.	—
Series	LM281BZ	—
Color	White, Cool	—
CCT (Correlated Color Temperature)	5000K	K
Flux @ 25°C, 150mA	61	lm
Flux Range @ 25°C	59–63	lm
Forward Voltage (Vf) Typical	3.1	V
Test Current	150	mA
Maximum Current	160	mA
Lumens per Watt @ 150mA	131	lm/W
Color Rendering Index (CRI)	80	—
Viewing Angle	120	°
Package / Case	1113 (2835 Metric)	—
Mounting Type	Surface Mount	—
Size / Dimension	3.50 × 2.80	mm
Height – Seated (Max)	0.75	mm
Thermal Resistance	25	°C/W
RoHS Status	RoHS Compliant	—
Moisture Sensitivity Level (MSL)	2A (4 Weeks)	—
Product Status	Not For New Designs	—

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Color: White, Cool 5000K
Package / Case: 1113 (2835 Metric)
Mounting Type: Surface Mount
Flux @ 25°C, 150mA: 61 lm (59–63 lm range)
Test Current: 150 mA
Maximum Current: 160 mA
Viewing Angle: 120°
CRI: 80
Thermal Resistance: 25°C/W
RoHS Compliance: Yes
MSL: 2A (4 Weeks)

Secondary Substitution Criteria (Allowable Variation):

Forward Voltage (Vf): 3.0–3.1 V (minor variation acceptable within circuit design tolerance)
Lumens per Watt: 131–136 lm/W (efficiency improvement acceptable)
Series Designation: LM281BZ, LM281B+, or LM281BZ+ (all within LM281 family)
Product Status: Active preferred over "Not For New Designs"

Substitute parts are grouped into two categories based on series evolution: LM281B+ series (active status) and LM281BZ+ series (active status with improved efficiency).

Parameter Comparison

Parameter	SPMWH3228FD5WARMS2 (Main)	SPMWH1228FD5WAR0SA	SPMWH1228FD5WARKSA	SPMWH1228FD5WARMSA	SPMWH3228FD5WAR0SC	SPMWH3228FD5WARKSC	SPMWH3228FD5WARMSC
Series	LM281BZ	LM281B+	LM281B+	LM281B+	LM281BZ+	LM281BZ+	LM281BZ+
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active
Color / CCT	White, Cool 5000K	White, Cool 5000K	White, Cool 5000K	White, Cool 5000K	White, Cool 5000K	White, Cool 5000K	White, Cool 5000K
Flux @ 25°C, 150mA	61 lm	61 lm	61 lm	61 lm	61 lm	61 lm	61 lm
Flux Range	59–63 lm	59–63 lm	59–63 lm	59–63 lm	59–63 lm	59–63 lm	59–63 lm
Forward Voltage (Vf)	3.1 V	3.1 V	3.1 V	3.1 V	3.0 V	3.0 V	3.0 V
Test Current	150 mA	150 mA	150 mA	150 mA	150 mA	150 mA	150 mA
Maximum Current	160 mA	160 mA	160 mA	160 mA	160 mA	160 mA	160 mA
Lumens per Watt	131 lm/W	131 lm/W	131 lm/W	131 lm/W	136 lm/W	136 lm/W	136 lm/W
CRI	80	80	80	80	80	80	80
Viewing Angle	120°	120°	120°	120°	120°	120°	120°
Package / Case	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)	1113 (2835 Metric)
Size / Dimension	3.50 × 2.80 mm	3.50 × 2.80 mm	3.50 × 2.80 mm	3.50 × 2.80 mm	3.50 × 2.80 mm	3.50 × 2.80 mm	3.50 × 2.80 mm
Height – Seated (Max)	0.75 mm	0.75 mm	0.75 mm	0.75 mm	0.75 mm	0.75 mm	0.75 mm
Thermal Resistance	25°C/W	25°C/W	25°C/W	25°C/W	25°C/W	25°C/W	25°C/W
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
MSL	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)

Engineering Selection Recommendations

For Active Production Designs:

All substitute parts listed carry Active product status, making them suitable for new production and long-term supply chain planning. The SPMWH3228FD5WARMS2 is designated "Not For New Designs" and should be replaced in active designs.

LM281B+ Series Substitutes (SPMWH1228FD5WAR0SA, SPMWH1228FD5WARKSA, SPMWH1228FD5WARMSA):

These parts maintain identical electrical performance to the main part: 3.1 V forward voltage, 131 lm/W efficiency, and 61 lm flux output. All three variants are functionally equivalent with differences limited to packaging tape configuration (indicated by suffix codes WAR0SA, WARKSA, WARMSA). Selection among these three is determined by tape reel specifications required by assembly equipment. All three carry Active status and full RoHS compliance.

LM281BZ+ Series Substitutes (SPMWH3228FD5WAR0SC, SPMWH3228FD5WARKSC, SPMWH3228FD5WARMSC):

These parts represent an efficiency improvement over the main part, delivering 136 lm/W versus 131 lm/W while maintaining identical 61 lm flux output. Forward voltage is reduced to 3.0 V, resulting in lower power consumption at equivalent light output. This voltage reduction is within acceptable circuit design tolerance for most LED driver topologies. Like the LM281B+ variants, these three differ only in tape configuration. All carry Active status and full RoHS compliance.

Compliance and Certification:

All substitute parts maintain RoHS compliance and MSL 2A (4 Weeks) moisture sensitivity rating, ensuring compatibility with standard surface mount assembly processes and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAR0SA, SPMWH1228FD5WARKSA, and SPMWH1228FD5WARMSA be used interchangeably?

A: Yes. These three parts are electrically and mechanically identical. The suffix codes (WAR0SA, WARKSA, WARMSA) indicate different tape reel configurations for automated pick-and-place equipment. Selection depends on your assembly machine's tape specifications. All three deliver identical performance in the circuit.

Q: What is the difference between LM281B+ and LM281BZ+ series substitutes?

A: The LM281BZ+ series (SPMWH3228FD5WAR0SC, SPMWH3228FD5WARKSC, SPMWH3228FD5WARMSC) provides improved efficiency at 136 lm/W compared to 131 lm/W for LM281B+ series. Forward voltage is 3.0 V versus 3.1 V. Both maintain 61 lm flux output and 120° viewing angle. The LM281BZ+ represents a newer generation with better power efficiency.

Q: Is the 0.1 V forward voltage difference between LM281B+ (3.1 V) and LM281BZ+ (3.0 V) significant?

A: The 0.1 V difference is within normal design tolerance for LED driver circuits. Most constant-current LED drivers accommodate this variation without circuit modification. If your design operates at the edge of driver compliance limits, verify the driver's voltage headroom specification. For most applications, both series are directly substitutable.

Q: Why is the main part SPMWH3228FD5WARMS2 marked "Not For New Designs"?

A: This designation indicates Samsung has transitioned this part to end-of-life status. Active substitute parts with superior or equivalent performance are available. New designs should select from the Active status alternatives listed to ensure long-term supply availability and support.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use identical 2835 metric package (1113 case code) with 3.50 × 2.80 mm dimensions and 0.75 mm maximum seated height. Tape and reel configurations differ (indicated by suffix codes), but the physical component package is identical across all substitutes.

Q: Do all parts meet RoHS compliance requirements?

A: Yes. The main part and all substitute parts are RoHS Compliant. All carry MSL 2A (4 Weeks) moisture sensitivity rating, compatible with standard surface mount assembly and storage protocols.

Q: Which substitute should I select for new production?

A: For new designs, select from the LM281BZ+ series (SPMWH3228FD5WAR0SC, SPMWH3228FD5WARKSC, or SPMWH3228FD5WARMSC) for improved efficiency. For existing designs requiring minimal circuit changes, the LM281B+ series (SPMWH1228FD5WAR0SA, SPMWH1228FD5WARKSA, or SPMWH1228FD5WARMSA) provides direct electrical equivalence. Choose the tape configuration variant matching your assembly equipment specifications.

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