SPMWH1228FD7WAUMSG LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAUMSG is a Samsung Semiconductor warm white LED lighting component featuring the LM281B+ series. This surface mount LED operates at 3500K color temperature with a forward voltage of 3V and test current of 150mA, delivering 60 lumens at 25°C with a luminous efficacy of 131 lm/W. The component is housed in a 2835 metric package (1113 case) with a 120° viewing angle and CRI of 90.

The product status is listed as "Not For New Designs," indicating this component is in mature production phase. Identification of equivalent and substitute parts is necessary for design flexibility, supply chain continuity, and component availability management.

Key Parameters

Parameter	Value
Manufacturer Part Number	SPMWH1228FD7WAUMSG
Manufacturer	Samsung Semiconductor, Inc.
Series	LM281B+
Color	White, Warm
CCT (K)	3500K
Flux @ 25°C, 150mA	60 lm (58–62 lm)
Forward Voltage (Vf) Typical	3V
Test Current	150 mA
Maximum Current	160 mA
Lumens/Watt @ 150mA	131 lm/W
CRI (Color Rendering Index)	90
Viewing Angle	120°
Package / Case	1113 (2835 Metric)
Mounting Type	Surface Mount
Size / Dimension	0.138" L × 0.110" W (3.50 mm × 2.80 mm)
Height - Seated (Max)	0.030" (0.75 mm)
Thermal Resistance	25°C/W
RoHS Status	RoHS Compliant
MSL (Moisture Sensitivity Level)	2A (4 Weeks)
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAUMSG is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 1113 (2835 Metric)
Mounting type: Surface Mount
Physical dimensions: 0.138" L × 0.110" W (3.50 mm × 2.80 mm)
Maximum seated height: 0.030" (0.75 mm)

Electrical Compatibility:

Forward voltage range: 3V to 3.1V
Test current: 150 mA
Maximum current: 160 mA
Viewing angle: 120°

Optical Characteristics:

Luminous flux: 60 lm (58–62 lm) at 25°C, 150 mA
Color: White, Warm
CCT range: 3000K to 3500K
CRI: 80 to 90

Compliance & Environmental:

RoHS Compliant
MSL: 2A (4 Weeks)

Substitute parts must maintain identical mechanical footprint, compatible electrical parameters within specified ranges, and equivalent optical output. Color temperature variation between 3000K and 3500K is acceptable within warm white LED applications. CRI values of 80 or higher satisfy warm white lighting requirements.

Parameter Comparison

Parameter	SPMWH1228FD7WAUMSG	SPMWH1228FD5WAV0S3	SPMWH1228FD5WAVMS3	SPMWH1228FD5WAVUS3	SPMWH3228FD5WAV0SE	SPMWH3228FD5WAVKSE	SPMWH3228FD5WAVMSE
Series	LM281B+	LM281B	LM281B	LM281B	LM281BZ+	LM281BZ+	LM281BZ+
CCT (K)	3500K	3000K	3000K	3000K	3000K	3000K	3000K
Flux @ 25°C, 150mA (lm)	60	60	60	60	60	60	60
Forward Voltage (Vf) Typical	3V	3.1V	3.1V	3.1V	3V	3V	3V
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/Watt @ 150mA	131	129	129	129	133	133	133
CRI	90	80	80	80	80	80	80
Viewing Angle	120°	120°	120°	120°	120°	120°	120°
Package / Case	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)	1113 (2835)
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	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
MSL	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)
Product Status	Not For New Designs	Not For New Designs	Not For New Designs	Not For New Designs	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (LM281B Series):

The SPMWH1228FD5WAV0S3, SPMWH1228FD5WAVMS3, and SPMWH1228FD5WAVUS3 are direct parametric equivalents with identical mechanical and electrical specifications. These parts operate at 3000K color temperature versus the 3500K of the main part, representing a 500K shift toward cooler warm white. All three maintain 60 lumens output, 150 mA test current, and 120° viewing angle. Forward voltage increases to 3.1V, requiring circuit verification for voltage-sensitive applications. CRI decreases from 90 to 80, acceptable for general warm white lighting. All three parts carry "Not For New Designs" status, matching the main part lifecycle phase.

Secondary Substitutes (LM281BZ+ Series):

The SPMWH3228FD5WAV0SE, SPMWH3228FD5WAVKSE, and SPMWH3228FD5WAVMSE represent upgraded alternatives with active product status. These LM281BZ+ series components deliver improved luminous efficacy of 133 lm/W versus 131 lm/W, with forward voltage returning to 3V. Color temperature remains at 3000K. CRI is 80. The active product status indicates ongoing manufacturing support and long-term availability. These parts are suitable for new design implementations requiring warm white 2835 LEDs with superior efficiency.

Compliance Verification:

All substitute parts maintain RoHS compliance and MSL 2A (4 Weeks) rating, ensuring compatibility with standard PCB assembly processes and storage requirements. No additional environmental or regulatory considerations apply.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD5WAVUS3 directly replace SPMWH1228FD7WAUMSG in existing designs?

A: Mechanical and electrical compatibility is confirmed. The substitute operates at 3000K versus 3500K, and forward voltage increases from 3V to 3.1V. Circuit designs with voltage headroom and applications tolerant of 500K color temperature shift can accommodate this substitution. Designs with tight voltage margins or color temperature specifications require evaluation.

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

A: The LM281BZ+ series (SPMWH3228 base number) delivers higher luminous efficacy at 133 lm/W compared to LM281B at 129 lm/W. Both series maintain identical optical output of 60 lumens, viewing angle of 120°, and package dimensions. LM281BZ+ parts carry active product status, indicating current manufacturing and long-term support.

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

A: All SPMWH1228FD5 variants are supplied in Tape & Reel (TR) packaging. The SPMWH3228FD5 variants do not specify packaging format in the provided data. Packaging compatibility must be confirmed with the supplier for automated assembly processes.

Q: What inventory levels are available for each substitute?

A: SPMWH1228FD5WAVUS3 has the highest inventory at 32,929 pieces. SPMWH1228FD5WAVMS3 has 3,758 pieces. SPMWH1228FD5WAV0S3 has 2,401 pieces. SPMWH3228 series parts have lower inventory: SPMWH3228FD5WAVKSE and SPMWH3228FD5WAV0SE each have approximately 900–930 pieces, and SPMWH3228FD5WAVMSE has 728 pieces.

Q: Does the 500K color temperature difference between 3500K and 3000K affect application performance?

A: Color temperature shift from 3500K to 3000K moves the light output toward warmer appearance. Applications with fixed color temperature specifications or color-critical lighting designs require evaluation. General warm white lighting applications typically tolerate this variation within the warm white category (2700K–4000K range).

Q: What is the significance of the "Not For New Designs" status?

A: This designation indicates the SPMWH1228FD7WAUMSG and LM281B series are in mature production with no active development. New designs should prioritize the LM281BZ+ series (SPMWH3228 variants) with active product status for long-term supply assurance and manufacturing continuity.

Q: How does CRI 90 compare to CRI 80 in the substitutes?

A: CRI 90 provides superior color rendering accuracy, beneficial for applications where color fidelity is important. CRI 80 is acceptable for general lighting applications. The 10-point difference is noticeable in color-critical environments but acceptable for standard warm white illumination.

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