SPMWH1228FD7WAW0S2 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAW0S2 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package format, designed for surface mount LED lighting applications. This component operates at 2700K color temperature with a typical forward voltage of 3.1V and 150mA test current, delivering 50 lumens at 25°C with 108 lm/W efficiency and 90 CRI.

The SPMWH1228FD7WAW0S2 carries a "Not For New Designs" product status designation. This status indicates the component is in mature or end-of-life phase within Samsung's product portfolio. Identifying equivalent substitute parts ensures design continuity, supply chain flexibility, and access to components with active product status for ongoing and future production requirements.

Substiute Parts

SPMWH1228FD7WAW0S2

Samsung Semiconductor, Inc.In Stock: 1055SPMWH1228FD7WAW0S2 Datasheet

Current PartRFQ

SPMWH1228FD7WAW0SA

Samsung Semiconductor, Inc.In Stock: 1121SPMWH1228FD7WAW0SA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAW0S2 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Color specification: White, Warm
• Correlated Color Temperature (CCT): 2700K
• Package / Case format: 1113 (2835 Metric)
• Mounting type: Surface Mount
• Forward voltage (Vf) typical: 3.1V
• Test current: 150mA
• Maximum current rating: 160mA
• Viewing angle: 120°
• CRI: 90
• Physical dimensions: 0.138" L × 0.110" W (3.50mm × 2.80mm)
• Height seated maximum: 0.030" (0.75mm)
• RoHS compliance status
• MSL rating: 2A (4 Weeks)

The substitute part SPMWH1228FD7WAW0SA meets all mandatory matching parameters. The primary distinction is the series designation (LM281B+ versus LM281B) and product status transition from "Not For New Designs" to "Active," along with minor variations in luminous flux output and thermal resistance characteristics that remain within acceptable operational bounds for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

SPMWH1228FD7WAW0SA as Primary Substitute:

The SPMWH1228FD7WAW0SA is the direct equivalent substitute for SPMWH1228FD7WAW0S2. Selection of this substitute part is supported by the following engineering factors:

1. Product Status Alignment: The substitute carries "Active" product status, ensuring continued availability and manufacturing support from Samsung Semiconductor, Inc., whereas the main part is designated "Not For New Designs."

2. Electrical Compatibility: Both parts share identical forward voltage (3.1V typical), test current (150mA), and maximum current rating (160mA), ensuring direct circuit compatibility without modification to drive electronics or current-limiting resistor calculations.

3. Optical Specifications: Both parts deliver identical color temperature (2700K), viewing angle (120°), and CRI (90). The luminous flux variation (50 lm versus 46 lm at 25°C, 150mA) represents a 8% difference within normal manufacturing tolerance bands for LED components and does not constitute a functional incompatibility.

4. Mechanical Compatibility: Identical package format (1113 / 2835 Metric), physical dimensions (0.138" L × 0.110" W / 3.50mm × 2.80mm), and seated height (0.030" / 0.75mm) ensure direct PCB footprint compatibility without layout modification.

5. Compliance Certification: Both parts maintain RoHS compliance and identical MSL rating (2A, 4 Weeks), supporting equivalent handling, storage, and assembly process requirements.

6. Thermal Characteristics: The substitute exhibits higher thermal resistance (25°C/W versus 17°C/W), which represents a conservative thermal design margin and does not restrict application scope for standard LED lighting circuits operating within specified current parameters.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAW0SA be used as a direct replacement for SPMWH1228FD7WAW0S2 in existing designs?

A: Yes. Both parts share identical electrical specifications (3.1V forward voltage, 150mA test current, 160mA maximum), identical optical properties (2700K CCT, 120° viewing angle, 90 CRI), and identical mechanical packaging (1113 / 2835 format, 0.138" × 0.110" × 0.030" maximum height). No circuit modification or PCB redesign is required.

Q: What is the significance of the series designation change from LM281B to LM281B+?

A: The LM281B+ designation indicates an updated product series within Samsung's LED portfolio. The substitute part maintains all critical electrical, optical, and mechanical parameters of the original LM281B series while offering active product status and continued manufacturing support.

Q: How does the 4 lm difference in luminous flux (50 lm versus 46 lm) affect system performance?

A: The flux difference represents approximately 8% variation, which falls within standard LED manufacturing tolerance specifications. For applications requiring precise luminous output, circuit design should incorporate current adjustment or optical feedback mechanisms independent of individual component flux variation.

Q: Are the thermal resistance differences (17°C/W versus 25°C/W) significant for circuit design?

A: The substitute part exhibits higher thermal resistance, representing a more conservative thermal profile. For applications operating at or below the specified 150mA test current, this difference does not restrict thermal performance. Thermal management design should be based on worst-case thermal resistance (25°C/W) to ensure adequate heat dissipation margin.

Q: Is the packaging format identical between both parts?

A: Yes. Both parts use identical Tape & Reel (TR) packaging in 1113 (2835 Metric) format with matching physical dimensions and height specifications. Assembly equipment, pick-and-place programming, and reflow profiles require no modification.

Q: What is the inventory status of each part?

A: SPMWH1228FD7WAW0S2 has 953 pieces in stock with "Not For New Designs" status. SPMWH1228FD7WAW0SA has 1094 pieces in stock with "Active" product status, providing superior long-term supply chain availability.

Q: Do both parts meet the same compliance and handling requirements?

A: Yes. Both parts are RoHS compliant and carry identical MSL rating (2A, 4 Weeks), requiring identical moisture control, storage conditions, and assembly process handling protocols.