SPMWH3228FD5WAUMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH3228FD5WAUMS3 is a Samsung Semiconductor warm white LED in the 2835 metric package (1113 case code). This surface mount LED operates at 3500K color temperature with a forward voltage of 3.1V and rated current of 150mA. The part is designated as "Not For New Designs," indicating it has reached end-of-life status. Equivalent and substitute parts are necessary for ongoing production support, inventory management, and design flexibility when the primary part becomes unavailable.

Key Parameters

Parameter	Value	Specification Range
Manufacturer	Samsung Semiconductor, Inc.	Fixed
Series	LM281BZ	LM281BZ / LM281B / LM281B+ / LM281BZ+
Package / Case	1113 (2835 Metric)	Fixed
Color	White, Warm	Fixed
CCT (K)	3500K	3000K – 3500K
Flux @ 25°C, 150mA	61lm (59lm – 63lm)	Fixed
Voltage - Forward (Vf) (Typ)	3.1V	3.0V – 3.1V
Current - Test	150mA	Fixed
Current - Max	160mA	Fixed
Lumens/Watt @ 150mA	131 – 136 lm/W	131 – 136 lm/W
CRI (Color Rendering Index)	80	Fixed
Viewing Angle	120°	Fixed
Mounting Type	Surface Mount	Fixed
Size / Dimension	0.138" L x 0.110" W (3.50mm x 2.80mm)	Fixed
Height - Seated (Max)	0.030" (0.75mm)	Fixed
Thermal Resistance	25°C/W	Fixed
RoHS Status	RoHS Compliant	Fixed
MSL (Moisture Sensitivity Level)	2A (4 Weeks)	Fixed

Substitute Part Grouping Explanation

Substitution of the SPMWH3228FD5WAUMS3 is determined by the following critical parameters:

Fixed Compatibility Criteria:

Package / Case: 1113 (2835 Metric) – all substitutes must match this footprint
Mounting Type: Surface Mount – all substitutes must be surface mount
Color: White, Warm – all substitutes must maintain warm white output
CRI: 80 – all substitutes maintain this color rendering index
Viewing Angle: 120° – all substitutes maintain this beam angle
Physical Dimensions: 0.138" L x 0.110" W (3.50mm x 2.80mm) – all substitutes match
Height - Seated (Max): 0.030" (0.75mm) – all substitutes match
Thermal Resistance: 25°C/W – all substitutes match
RoHS Status: RoHS Compliant – all substitutes maintain compliance
MSL: 2A (4 Weeks) – all substitutes match

Allowable Variation Parameters:

CCT (K): 3000K – 3500K (main part is 3500K; 3000K variants acceptable)
Voltage - Forward (Vf) (Typ): 3.0V – 3.1V (main part is 3.1V; 3.0V variants acceptable)
Lumens/Watt: 131 – 136 lm/W (main part is 131 lm/W; up to 136 lm/W acceptable)
Series: LM281BZ, LM281B, LM281B+, LM281BZ+ (all series compatible within parameter range)

Product Status Consideration: Substitutes include both "Not For New Designs" (LM281B series) and "Active" status parts (LM281B+ and LM281BZ+ series). Active status parts provide extended availability and supply chain continuity.

Parameter Comparison

Part Number	Series	CCT (K)	Vf (Typ)	Flux @ 25°C (lm)	lm/W	Product Status	Inventory (Pcs)
SPMWH3228FD5WAUMS3	LM281BZ	3500K	3.1V	61 (59–63)	131	Not For New Designs	851
SPMWH1228FD5WAU0S3	LM281B	3500K	3.1V	61 (59–63)	131	Not For New Designs	24005
SPMWH1228FD5WAUMS3	LM281B	3500K	3.1V	61 (59–63)	131	Not For New Designs	22360
SPMWH1228FD5WAUUS3	LM281B	3500K	3.1V	61 (59–63)	131	Not For New Designs	36837
SPMWH1228FD5WAV0SC	LM281B+	3000K	3.1V	61 (59–63)	131	Active	1145
SPMWH1228FD5WAVKSC	LM281B+	3000K	3.1V	61 (59–63)	131	Active	999
SPMWH1228FD5WAVMSC	LM281B+	3000K	3.1V	61 (59–63)	131	Active	902
SPMWH3228FD5WAU0SE	LM281BZ+	3500K	3.0V	61 (59–63)	136	Active	1138
SPMWH3228FD5WAUKSE	LM281BZ+	3500K	3.0V	61 (59–63)	136	Active	730
SPMWH3228FD5WAUMSE	LM281BZ+	3500K	3.0V	61 (59–63)	136	Active	1028

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select SPMWH1228FD5WAUUS3, SPMWH1228FD5WAUMS3, or SPMWH1228FD5WAU0S3. These LM281B series parts maintain identical electrical specifications: 3500K CCT, 3.1V forward voltage, 131 lm/W efficiency, and 61lm flux output. All three parts are designated "Not For New Designs" but provide maximum compatibility with existing circuit designs. SPMWH1228FD5WAUUS3 offers the highest inventory level (36,837 pcs).

For Extended Availability (Active Status): Select SPMWH3228FD5WAU0SE, SPMWH3228FD5WAUKSE, or SPMWH3228FD5WAUMSE. These LM281BZ+ series parts are designated "Active" status, ensuring long-term supply continuity. They maintain 3500K CCT matching the original part but operate at 3.0V forward voltage (0.1V lower) and deliver 136 lm/W efficiency (5 lm/W higher). These parts are suitable for new designs and ongoing production.

For Alternative Color Temperature (Active Status): Select SPMWH1228FD5WAV0SC, SPMWH1228FD5WAVKSC, or SPMWH1228FD5WAVMSC. These LM281B+ series parts are designated "Active" status with 3000K CCT (500K warmer than the original). They maintain 3.1V forward voltage and 131 lm/W efficiency. These parts are suitable only if application requirements permit warmer color temperature.

Compliance Verification: All substitute parts maintain RoHS compliance and MSL 2A (4 Weeks) rating. No additional handling or storage modifications are required.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAUUS3 replace SPMWH3228FD5WAUMS3 directly in production?

A: Yes. Both parts share identical electrical specifications (3500K, 3.1V, 131 lm/W, 61lm), identical package dimensions (2835 metric), and identical thermal characteristics (25°C/W). The only difference is the series designation (LM281B vs. LM281BZ). Both are "Not For New Designs" status. No circuit modifications are required.

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

A: The provided data shows both series operate at identical electrical parameters within the scope of this substitution. Series designation differences reflect Samsung's internal product line management but do not affect electrical or mechanical compatibility for these parts.

Q: Can I use SPMWH3228FD5WAU0SE (LM281BZ+, 3.0V) instead of the original 3.1V part?

A: Yes, within circuit design constraints. The 0.1V lower forward voltage reduces power dissipation by approximately 3.2% at 150mA test current. The higher efficiency (136 vs. 131 lm/W) compensates for lower voltage. Verify that your LED driver or current source can operate at 3.0V forward voltage. This part is "Active" status, providing extended availability.

Q: What is the impact of using 3000K parts (SPMWH1228FD5WAV0SC) instead of 3500K?

A: The 500K color temperature difference shifts the light output toward warmer (more orange/red) appearance. This is a visual characteristic change only; electrical parameters remain identical. Use only if application requirements explicitly permit warmer color temperature.

Q: Are all substitute parts in the same 2835 package?

A: Yes. All substitute parts use the 1113 (2835 Metric) package with identical dimensions (0.138" L x 0.110" W, 3.50mm x 2.80mm) and height (0.030" max, 0.75mm). All are surface mount compatible with existing PCB layouts.

Q: Which substitute part offers the best long-term availability?

A: SPMWH3228FD5WAU0SE, SPMWH3228FD5WAUKSE, and SPMWH3228FD5WAUMSE (LM281BZ+ series) are designated "Active" status. These parts are recommended for new designs and provide extended supply continuity. Current inventory levels range from 730 to 1,138 pcs.

Q: Do I need to modify my circuit design to use substitute parts?

A: No circuit modifications are required for direct electrical substitutes (LM281B series at 3.1V, 3500K). For LM281BZ+ series at 3.0V, verify your LED driver can operate at the lower forward voltage. All parts maintain identical thermal resistance (25°C/W) and package footprint.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain RoHS compliance status. No additional environmental or regulatory modifications are required.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message