SPMWH1228FD7WAUMS3 LED Equivalent & Substitute Parts

Part Overview

The SPMWH1228FD7WAUMS3 is a Samsung Semiconductor LM281B warm white LED in 2835 metric package (1113 case). This surface mount LED operates at 3500K color temperature with 56 lm luminous flux at 25°C and 150 mA test current. The part is classified as "Not For New Designs," indicating end-of-life status. Equivalent and substitute parts are necessary to support ongoing production requirements, provide design flexibility, and ensure supply chain continuity for applications requiring warm white LED lighting with compatible electrical and mechanical specifications.

Substiute Parts

SPMWH1228FD7WAUMS3

Samsung Semiconductor, Inc.In Stock: 10690SPMWH1228FD7WAUMS3 Datasheet

Current PartRFQ

SPMWH1228FD7WAUMSC

Samsung Semiconductor, Inc.In Stock: 1111SPMWH1228FD7WAUMSC Datasheet

DirectRFQ

SPMWH1228FD7WAU0S3

Samsung Semiconductor, Inc.In Stock: 2406SPMWH1228FD7WAU0S3 Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAV0SC

Samsung Semiconductor, Inc.In Stock: 824SPMWH3228FD5WAV0SC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAVKSC

Samsung Semiconductor, Inc.In Stock: 986SPMWH3228FD5WAVKSC Datasheet

Parametric EquivalentRFQ

SPMWH3228FD5WAVMSC

Samsung Semiconductor, Inc.In Stock: 1121SPMWH3228FD5WAVMSC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPMWH1228FD7WAUMS3 are classified into two categories based on allowed electrical and mechanical parameters:

Direct Manufacturer Substitutes (Same Series, Same CCT): Parts that maintain identical or near-identical electrical performance within the LM281B series at 3500K color temperature. These parts share the same forward voltage (3.1V), test current (150 mA), viewing angle (120°), and package dimensions (2835 metric, 3.50 mm × 2.80 mm). Substitution is based on matching luminous flux output (56 lm ±2 lm range), CRI (90), and maximum current rating (160 mA).

Parametric Equivalents (Different Series, Different CCT): Parts from the LM281BZ+ series operating at 3000K color temperature. These parts maintain mechanical compatibility (2835 metric package, identical dimensions and height), electrical compatibility (3V forward voltage, 150 mA test current, 160 mA maximum current, 120° viewing angle), and similar luminous flux output (56 lm). However, they differ in color temperature (3000K vs. 3500K) and CRI (80 vs. 90), requiring application-specific evaluation.

Key Parameters Determining Substitution:

• Package type and dimensions (2835 metric, 1113 case)
• Forward voltage tolerance (3.0–3.1V)
• Luminous flux range (54–58 lm at 150 mA, 25°C)
• Maximum current rating (160 mA)
• Viewing angle (120°)
• Color temperature and CRI (application-dependent)
• Thermal resistance (17–25°C/W acceptable range)

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Same CCT 3500K):

SPMWH1228FD7WAU0S3 is the primary parametric equivalent. It maintains identical electrical specifications (3.1V forward voltage, 56 lm flux, 120 lm/W efficiency, CRI 90) and mechanical compatibility (2835 package, 3.50 × 2.80 mm, 0.75 mm height). The thermal resistance is 17°C/W, matching the main part. Although classified as "Not For New Designs," it provides full functional equivalence. RoHS compliance is confirmed.

SPMWH1228FD7WAUMSC (LM281B+ series) is an active product offering improved product status. It maintains 3500K color temperature, 90 CRI, and identical mechanical dimensions. However, luminous flux is reduced to 53 lm (51–55 lm range) and efficiency drops to 114 lm/W. Thermal resistance increases to 25°C/W. This part is suitable only when lower luminous output is acceptable.

For Parametric Substitution (Different CCT 3000K):

SPMWH3228FD5WAV0SC, SPMWH3228FD5WAVKSC, and SPMWH3228FD5WAVMSC (LM281BZ+ series) are active products with identical mechanical compatibility and luminous flux (56 lm). Forward voltage is 3.0V (0.1V lower than main part). Color temperature shifts to 3000K and CRI reduces to 80. These parts are suitable only for applications where warmer color temperature (3000K vs. 3500K) and lower color rendering (CRI 80 vs. 90) are acceptable. Thermal resistance is 25°C/W.

Selection Criteria:

• Maintain 3500K color temperature: Select SPMWH1228FD7WAU0S3 or SPMWH1228FD7WAUMSC
• Require active product status: Select SPMWH1228FD7WAUMSC or LM281BZ+ series
• Accept 3000K color temperature: Select LM281BZ+ series (SPMWH3228FD5WAV0SC, SPMWH3228FD5WAVKSC, or SPMWH3228FD5WAVMSC)
• Thermal design constraints: Prefer 17°C/W thermal resistance (main part or SPMWH1228FD7WAU0S3)

Frequently Asked Questions (FAQ)

Q: Can SPMWH1228FD7WAUMSC replace SPMWH1228FD7WAUMS3 in all applications?

A: SPMWH1228FD7WAUMSC maintains the same 3500K color temperature, 90 CRI, and mechanical package. However, luminous flux is 53 lm versus 56 lm, representing a 5.4% reduction. Applications requiring specific luminous output within the 54–58 lm range must account for this difference. Thermal resistance increases from 17°C/W to 25°C/W, affecting heat dissipation performance.

Q: What is the difference between SPMWH1228FD7WAU0S3 and SPMWH1228FD7WAUMS3?

A: Both parts are LM281B series with identical electrical specifications (3.1V, 56 lm, 120 lm/W, CRI 90, 3500K). Mechanical dimensions and thermal resistance (17°C/W) are identical. The primary difference is product status: SPMWH1228FD7WAUMS3 is "Not For New Designs" while SPMWH1228FD7WAU0S3 shares the same status. Both are functionally equivalent for existing designs.

Q: Can LM281BZ+ series parts (3000K) replace the main part (3500K)?

A: LM281BZ+ parts (SPMWH3228FD5WAV0SC, SPMWH3228FD5WAVKSC, SPMWH3228FD5WAVMSC) are mechanically and electrically compatible but differ in color temperature (3000K vs. 3500K) and CRI (80 vs. 90). Substitution is only valid for applications where warmer color temperature and lower color rendering are acceptable. Forward voltage is 3.0V instead of 3.1V.

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

A: Yes. All parts listed use the 1113 (2835 metric) package with identical dimensions (3.50 mm × 2.80 mm) and maximum seated height (0.75 mm). All are surface mount components suitable for the same PCB footprint.

Q: What is the significance of thermal resistance differences?

A: The main part and SPMWH1228FD7WAU0S3 have 17°C/W thermal resistance, while substitute parts have 25°C/W. Lower thermal resistance improves heat dissipation. In high-temperature environments or high-density LED arrays, the 17°C/W parts provide better thermal performance. The 25°C/W parts are suitable for standard operating conditions.

Q: Are all parts RoHS compliant?

A: Yes. The main part is ROHS3 compliant. All substitute parts are RoHS compliant. All parts have MSL rating of 2A (4 Weeks), indicating identical moisture sensitivity handling requirements.

Q: Which substitute part has the best luminous efficiency?

A: LM281BZ+ series parts (SPMWH3228FD5WAV0SC, SPMWH3228FD5WAVKSC, SPMWH3228FD5WAVMSC) achieve 124 lm/W, compared to 120 lm/W for the main part and 114 lm/W for SPMWH1228FD7WAUMSC. However, this efficiency advantage is offset by lower color temperature (3000K) and CRI (80).

Q: What inventory levels are available?

A: SPMWH1228FD7WAUMS3 (main part) has 10,637 pcs. SPMWH1228FD7WAU0S3 has 2,346 pcs. SPMWH1228FD7WAUMSC has 1,027 pcs. LM281BZ+ series parts have 737–1,096 pcs. Inventory levels should be confirmed with supplier for current availability.