QBLP601-O Orange LED 0603 SMD Equivalent & Substitute Parts

Part Overview

The QBLP601-O is an orange LED indicator in 0603 (1608 Metric) surface mount package manufactured by QT Brightek. This discrete LED operates at 2V forward voltage with 165mcd brightness rating and 605nm dominant wavelength. The component is Active status and ROHS3 compliant, suitable for standard indication applications requiring orange light output.

Substitute parts are identified based on matching package format, mounting type, wavelength compatibility, and electrical operating parameters within acceptable tolerance ranges for LED indication circuits.

Substiute Parts

QBLP601-O

QT Brightek (QTB)In Stock: 742QBLP601-O Datasheet

Current PartRFQ

SML-E12D8WT86

Rohm SemiconductorIn Stock: 47685SML-E12D8WT86 Datasheet

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SML-E12DWT86

Rohm SemiconductorIn Stock: 665419SML-E12DWT86 Datasheet

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SML-E12Y8WT86

Rohm SemiconductorIn Stock: 5449SML-E12Y8WT86 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following substitution criteria:

Primary Substitution Criteria (Must Match):

• Package format: 0603 (1608 Metric)
• Mounting type: Surface Mount
• Dominant wavelength: Orange spectrum (605-606nm)
• RoHS3 compliance status
• Physical dimensions: 1.60mm L x 0.80mm W

Secondary Compatibility Parameters (Acceptable Variation):

• Forward voltage (Vf): 1.9V to 2.2V range acceptable for standard indication circuits
• Millicandela rating: 63mcd to 200mcd range acceptable depending on application brightness requirements
• Lens transparency: Clear or Diffused acceptable based on application requirements
• Height: Maximum 0.60mm for standard PCB clearance

Non-Substitutable Characteristics:

• Color specification: Orange wavelength only (605-606nm). Yellow wavelength (590nm) listed but not suitable for orange indication applications.

Parameter Comparison

Engineering Selection Recommendations

Suitable Orange Substitutes:

SML-E12DWT86 (Rohm Semiconductor) - Primary substitute for QBLP601-O

• Matches dominant wavelength at 606nm (within orange spectrum)
• Forward voltage 1.9V is lower than QBLP601-O (2V), reducing circuit power consumption
• Millicandela rating 200mcd exceeds QBLP601-O (165mcd), providing higher brightness
• Height 0.46mm is lower than QBLP601-O (0.60mm), improving PCB clearance
• Diffused lens provides wider light distribution compared to clear lens
• MSL rating 2 (1 Year) is superior to QBLP601-O MSL rating 3
• ROHS3 compliant, Active status

SML-E12D8WT86 (Rohm Semiconductor) - Secondary substitute for QBLP601-O

• Matches dominant wavelength at 605nm (exact match to QBLP601-O)
• Forward voltage 2.2V is higher than QBLP601-O (2V), requiring circuit adjustment
• Millicandela rating 100mcd is lower than QBLP601-O (165mcd)
• Height 0.46mm is lower than QBLP601-O (0.60mm)
• Diffused lens provides wider light distribution
• MSL rating 3 (168 Hours) matches QBLP601-O
• ROHS3 compliant, Active status

Not Suitable:

SML-E12Y8WT86 (Rohm Semiconductor) - Not suitable for QBLP601-O substitution

• Dominant wavelength 590nm is yellow, not orange
• Color specification does not match orange indication requirement
• Cannot be used in applications requiring orange light output

Frequently Asked Questions (FAQ)

Q: Can SML-E12DWT86 directly replace QBLP601-O without circuit modification?

A: SML-E12DWT86 has a lower forward voltage (1.9V vs 2V) and higher brightness (200mcd vs 165mcd). Direct substitution is possible in most indication circuits. However, if the circuit uses a fixed current source or has tight brightness specifications, verify that the 200mcd output is acceptable for the application. The lower Vf may reduce current draw slightly.

Q: What is the difference between clear and diffused lens transparency?

A: QBLP601-O has a clear lens, providing focused light output in a narrow viewing angle. SML-E12DWT86 and SML-E12D8WT86 have diffused lenses, which scatter light over a wider viewing angle. This affects brightness perception and viewing angle characteristics. Select based on application requirements for light distribution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. QBLP601-O and all listed substitute parts (SML-E12DWT86, SML-E12D8WT86, SML-E12Y8WT86) are ROHS3 compliant. All parts meet regulatory requirements for hazardous substance restrictions.

Q: Why is SML-E12Y8WT86 listed if it cannot substitute QBLP601-O?

A: SML-E12Y8WT86 is listed in the original substitute list but is not suitable for QBLP601-O substitution due to wavelength mismatch (590nm yellow vs 605nm orange). It is included for reference only. Use only SML-E12DWT86 or SML-E12D8WT86 for orange indication applications.

Q: What is the impact of MSL rating difference between QBLP601-O and substitutes?

A: QBLP601-O has MSL 3 (168 Hours), while SML-E12DWT86 has MSL 2 (1 Year). Lower MSL rating indicates better moisture resistance. SML-E12DWT86 provides superior moisture protection for storage and handling. SML-E12D8WT86 matches QBLP601-O at MSL 3.

Q: Can these parts be used interchangeably in high-brightness applications?

A: SML-E12DWT86 (200mcd) provides higher brightness than QBLP601-O (165mcd) and is suitable for applications requiring increased light output. SML-E12D8WT86 (100mcd) provides lower brightness and is suitable only if reduced brightness is acceptable. Select based on specific brightness requirements.

Q: Are physical dimensions identical across all parts?

A: All parts share identical PCB footprint dimensions (1.60mm L x 0.80mm W). However, height varies: QBLP601-O is 0.60mm maximum, while Rohm substitutes are 0.46mm maximum. Lower height provides better PCB clearance. Lens size differs slightly (QBLP601-O 1.10mm x 0.80mm vs Rohm 1.20mm x 0.80mm), but both fit standard 0603 package.