LED LM231A SPMWHT221MD5WATKS0 Equivalent & Substitute Parts

Part Overview

The Samsung Semiconductor LM231A (SPMWHT221MD5WATKS0) is a surface-mount LED lighting component featuring neutral white 4000K color temperature in a compact 0909 (2323 Metric) package. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The LM231A delivers 26 lumens at 25°C under 65mA test current with a forward voltage of 2.86V and 120° viewing angle, suitable for general illumination applications requiring neutral white spectral output.

Substiute Parts

SPMWHT221MD5WATKS0

Samsung Semiconductor, Inc.In Stock: 1170SPMWHT221MD5WATKS0 Datasheet

Current PartRFQ

XHGAWT-00-0000-00000HXE5

CreeLED, Inc.In Stock: 6251XHGAWT-00-0000-00000HXE5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete LM231A (SPMWHT221MD5WATKS0) is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Color and correlated color temperature (CCT): White, Neutral 4000K
• Luminous flux range at 25°C under rated test current: 21–31 lm envelope
• Test current: 65 mA nominal operation
• Forward voltage compatibility: 2.86 V typical
• Color Rendering Index (CRI): 80 minimum
• Mounting technology: Surface Mount
• Thermal resistance: 20 °C/W

Secondary Compatibility Factors:

• Maximum current rating must accommodate 65 mA operation
• Viewing angle: 120° minimum
• RoHS and REACH compliance status
• Moisture Sensitivity Level (MSL): 2A or better

The CreeLED XLamp® XH-G (XHGAWT-00-0000-00000HXE5) meets these substitution criteria through matching color temperature, CRI, test current, and thermal characteristics. Package size differs (3030 vs. 2323 Metric), requiring PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The CreeLED XLamp® XH-G (XHGAWT-00-0000-00000HXE5) is an active-status substitute for the obsolete Samsung LM231A. Both components share identical color temperature (4000K), CRI (80), test current (65 mA), and thermal resistance (20 °C/W). Forward voltage differs by 0.04 V (2.86 V vs. 2.9 V), which is within typical LED tolerance ranges and does not preclude substitution in constant-current driver circuits.

Critical Design Considerations:

1. Package Size Transition: The substitute uses a larger 3030 Metric package (3.00 mm × 3.00 mm) compared to the original 2323 Metric (2.30 mm × 2.30 mm). PCB layout modification is required; the substitute occupies approximately 69% greater footprint area.

2. Height Clearance: The XLamp® XH-G seated height is 1.83 mm versus 0.80 mm for the LM231A. Verify clearance in confined assembly spaces or under optical components.

3. Electrical Performance: The substitute delivers higher luminous efficacy (154 lm/W vs. 140 lm/W) and greater maximum current rating (350 mA vs. 150 mA), enabling enhanced brightness if circuit design permits.

4. Compliance Status: Both components maintain RoHS compliance and REACH unaffected status, suitable for regulated markets.

5. Availability: The XLamp® XH-G is in active production with 6236 units in stock, ensuring supply continuity compared to the obsolete LM231A (1115 units remaining).

Frequently Asked Questions (FAQ)

Q1: Can the XLamp® XH-G directly replace the LM231A without circuit modification?

A: Electrical substitution is feasible in constant-current LED driver circuits due to matching test current (65 mA) and compatible forward voltage (2.86 V vs. 2.9 V). However, PCB layout redesign is mandatory due to package size increase from 2323 to 3030 Metric. Verify height clearance (0.80 mm vs. 1.83 mm) in your mechanical assembly.

Q2: What is the impact of the 0.04 V forward voltage difference?

A: In constant-current driver topologies, this 0.04 V difference (2.86 V to 2.9 V) is negligible and within standard LED manufacturing tolerances. Voltage-regulated circuits may require minor resistor adjustment. Consult your driver IC datasheet for acceptable forward voltage ranges.

Q3: Does the larger package affect optical performance?

A: Both components share identical viewing angle specifications (120° vs. 130°), CRI (80), and color temperature (4000K). The larger 3030 package may alter light distribution geometry depending on lens or reflector design. Optical simulation or prototype testing is advised for precision applications.

Q4: Are there inventory or lead-time advantages to substitution?

A: Yes. The XLamp® XH-G is in active production status with 6236 units available, compared to the obsolete LM231A with 1115 remaining units. Long-term supply security favors the CreeLED substitute.

Q5: What compliance certifications apply to both parts?

A: Both the LM231A and XLamp® XH-G are RoHS Compliant and REACH Unaffected. Both carry ECCN EAR99 and HTSUS 8541.41.0000 classifications, suitable for unrestricted commercial distribution.

Q6: Can the XLamp® XH-G operate at the LM231A's maximum current rating?

A: The LM231A maximum current is 150 mA; the XLamp® XH-G maximum is 350 mA. The substitute can safely operate at 150 mA and beyond, enabling higher brightness if your circuit design permits. Thermal management and forward voltage must be verified at elevated currents.

Q7: What is the moisture sensitivity impact during assembly?

A: The LM231A carries MSL 2A (4 Weeks); the XLamp® XH-G datasheet does not specify MSL in the provided parameters. Consult CreeLED technical documentation for MSL rating before reflow soldering. Standard MSL 2A handling protocols are recommended.