SPMWH1228FD7WAQMS2 Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAQMS2 is a Samsung Semiconductor LM281B series cool white LED in 2835 metric package (1113 case). This surface mount LED operates at 3.1V forward voltage with 150mA test current, delivering 55 lumens at 25°C with a color temperature of 5700K and 90 CRI. The device is classified as Not For New Designs, indicating it has been superseded in Samsung's product portfolio. Equivalent substitute parts are available to maintain design continuity and ensure supply chain alternatives for existing applications.

Substiute Parts

SPMWH1228FD7WAQMS2

Samsung Semiconductor, Inc.In Stock: 989SPMWH1228FD7WAQMS2 Datasheet

Current PartRFQ

SPMWH1228FD7WAQMSA

Samsung Semiconductor, Inc.In Stock: 969SPMWH1228FD7WAQMSA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPMWH1228FD7WAQMS2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Color and CCT: White, Cool 5700K
• Package / Case: 1113 (2835 Metric)
• Mounting Type: Surface Mount
• Forward Voltage (Vf): 3.1V
• Test Current: 150mA
• Viewing Angle: 120°
• CRI: 90
• RoHS Compliance: Yes
• MSL Rating: 2A (4 Weeks)

Allowable Variation Parameters:

• Flux @ 25°C: Within the specified range tolerance (53–57 lm for main part; 50–54 lm for substitute)
• Lumens/Watt efficiency: May vary due to thermal and manufacturing differences
• Thermal Resistance: May differ based on package revision
• Product Status: Substitute may be Active while main part is Not For New Designs

The substitute part SPMWH1228FD7WAQMSA belongs to the LM281B+ series, representing an evolved version of the LM281B platform with identical electrical and mechanical interfaces.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SPMWH1228FD7WAQMSA

The SPMWH1228FD7WAQMSA is the direct equivalent substitute for SPMWH1228FD7WAQMS2. Both parts share identical electrical specifications (3.1V forward voltage, 150mA test current, 120° viewing angle) and mechanical compatibility (1113/2835 package, surface mount). Both are RoHS compliant with matching MSL ratings of 2A (4 Weeks).

The substitute part carries Active product status, whereas the main part is designated Not For New Designs. This status difference reflects Samsung's product lifecycle management and indicates that SPMWH1228FD7WAQMSA represents the current production equivalent.

Flux output at 25°C shows a minor variation: the main part specifies 55 lm (53–57 lm range) while the substitute specifies 52 lm (50–54 lm range). Both values fall within acceptable tolerance bands for cool white 5700K LEDs in the 2835 package class. The lumens/watt efficiency differs (118 lm/W vs. 112 lm/W) and thermal resistance varies (17°C/W vs. 25°C/W), reflecting manufacturing process improvements and thermal design updates in the LM281B+ series.

For applications requiring the SPMWH1228FD7WAQMS2, the SPMWH1228FD7WAQMSA provides full functional and mechanical substitution with current product availability and support.

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAQMSA be used as a direct replacement for SPMWH1228FD7WAQMS2?

A: Yes. Both parts are identical in forward voltage (3.1V), test current (150mA), color temperature (5700K), CRI (90), package (1113/2835), and mounting type (surface mount). Electrical and mechanical interfaces are fully compatible.

Q: What is the difference in flux output between these parts?

A: The main part SPMWH1228FD7WAQMS2 specifies 55 lm at 25°C with a tolerance range of 53–57 lm. The substitute SPMWH1228FD7WAQMSA specifies 52 lm at 25°C with a tolerance range of 50–54 lm. Both specifications are within acceptable manufacturing tolerances for this LED category.

Q: Why does the thermal resistance differ (17°C/W vs. 25°C/W)?

A: Thermal resistance variation reflects differences in package design and thermal interface characteristics between the LM281B and LM281B+ series revisions. Both values are within acceptable ranges for 2835 metric package LEDs and do not prevent functional substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both SPMWH1228FD7WAQMS2 and SPMWH1228FD7WAQMSA are RoHS compliant and carry identical MSL ratings of 2A (4 Weeks).

Q: What does "Not For New Designs" mean for the main part?

A: This status indicates that SPMWH1228FD7WAQMS2 has been superseded in Samsung's product portfolio. The substitute part SPMWH1228FD7WAQMSA carries Active status and represents the current production equivalent for new applications.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use identical surface mount packaging (1113/2835 metric), identical footprints, and identical electrical operating parameters (3.1V, 150mA). No PCB redesign or requalification is required for substitution.

Q: Is there a difference in lumens/watt efficiency?

A: The main part achieves 118 lm/W while the substitute achieves 112 lm/W at the 150mA test current. This 5% difference reflects manufacturing process updates in the LM281B+ series and does not affect functional compatibility or application suitability.

Q: What is the maximum current rating for both parts?

A: Both parts are rated for a maximum current of 160mA, providing a 10mA margin above the 150mA test current specification.