QTLP670C2TR Red LED 2-PLCC SMD Equivalent & Substitute Parts

Part Overview

The QTLP670C2TR is a red 630nm LED indication component manufactured by Everlight Electronics Co Ltd in a 2-PLCC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The component operates at 2V forward voltage with a 10mcd luminous intensity and 120° viewing angle, designed for standard LED indication applications in compact surface mount configurations.

Key Parameters

Parameter	Value
Manufacturer Part Number	QTLP670C2TR
Manufacturer	Everlight Electronics Co Ltd
Product Status	Obsolete
Color	Red
Wavelength - Dominant	630nm
Wavelength - Peak	635nm
Voltage - Forward (Vf) Typical	2V
Current - Test	20mA
Millicandela Rating	10mcd
Viewing Angle	120°
Lens Size	2.40mm Dia
Lens Style	Round with Flat Top
Lens Transparency	Clear
Package / Case	2-PLCC
Size / Dimension	3.20mm L x 2.80mm W
Height (Max)	2.10mm
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the QTLP670C2TR is determined by strict alignment of the following critical parameters:

Primary Compatibility Criteria:

Color: Red
Package / Case: 2-PLCC or equivalent 2-SMD, J-Lead
Mounting Type: Surface Mount
Lens Transparency: Clear
Viewing Angle: 120°
Lens Style: Round with Flat Top

Secondary Electrical Parameters:

Voltage - Forward (Vf): Range 1.8V to 2.2V (acceptable tolerance for LED indication circuits)
Current - Test: 10mA to 20mA (standard test conditions)
Wavelength - Dominant: 626nm to 648nm (red spectrum range)
Millicandela Rating: 8mcd to 39mcd (luminous intensity variation acceptable for indication applications)

Compliance Requirements:

RoHS3 Compliant
Surface Mount technology
Mechanical dimensions compatible with 2-PLCC footprint

The substitute parts listed below meet these criteria and are classified as active products with current manufacturing status, ensuring long-term availability and supply chain stability.

Parameter Comparison

Parameter	QTLP670C2TR (Main)	HSMS-A100-J00J1	HSMS-A100-L00J1	VLMD3100-GS18	VLMD3105-GS08	VLMD31L2N1-GS08	VLMD31M2P1-GS08	VLMS31J1K2-GS08	VLMS31J1L2-GS08	VLMS31K1L2-GS08
Manufacturer	Everlight	Broadcom	Broadcom	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Color	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red
Wavelength - Dominant (nm)	630	626	626	648	648	648	648	630	630	630
Wavelength - Peak (nm)	635	635	635	650	650	650	650	643	643	643
Voltage - Forward (Vf) Typical (V)	2.0	2.2	2.2	1.8	1.8	1.8	1.8	1.9	1.9	1.9
Current - Test (mA)	20	20	20	10	10	10	10	10	10	10
Millicandela Rating (mcd)	10	15	15	11.2	20	25	39	8	11	13
Viewing Angle (°)	120	120	120	120	120	120	120	120	120	120
Lens Size (mm Dia)	2.40	2.20	2.20	2.40	2.40	2.40	2.40	2.40	2.40	2.40
Lens Style	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top	Round with Flat Top
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear
Package / Case	2-PLCC	2-PLCC	2-PLCC	2-SMD, J-Lead	2-SMD, J-Lead	2-SMD, J-Lead	2-SMD, J-Lead	2-SMD, J-Lead	2-SMD, J-Lead	2-SMD, J-Lead
Size / Dimension (mm)	3.20 L x 2.80 W	3.20 L x 2.80 W	3.20 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W	3.00 L x 2.80 W
Height (Max) (mm)	2.10	2.10	2.10	1.85	1.85	1.85	1.85	1.85	1.85	1.85
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)	2A (4 Weeks)
Inventory Status	6300 Pcs	20168 Pcs	18400 Pcs	954 Pcs	17300 Pcs	41200 Pcs	3068 Pcs	15433 Pcs	8141 Pcs	9164 Pcs

Engineering Selection Recommendations

Broadcom HSMS-A100 Series (HSMS-A100-J00J1, HSMS-A100-L00J1)

The Broadcom HSMS-A100 series represents the closest electrical and mechanical equivalent to the QTLP670C2TR. Both variants maintain identical package dimensions (3.20mm L x 2.80mm W, 2.10mm height) and 2-PLCC footprint compatibility. Forward voltage is 2.2V compared to 2.0V in the original part, representing a 0.2V increase within acceptable LED circuit tolerance. Dominant wavelength of 626nm is within the red spectrum range. Both parts are active products with substantial inventory availability (20,168 and 18,400 units respectively) and ROHS3 compliance. MSL rating of 2A (4 Weeks) provides improved moisture handling compared to the original MSL 3 rating.

Vishay VLM3 Series (VLMS31J1K2-GS08, VLMS31J1L2-GS08, VLMS31K1L2-GS08)

The Vishay VLM3 series offers red 630nm LED options with dominant wavelength matching the original QTLP670C2TR. These parts operate at 1.9V forward voltage with 10mA test current. Mechanical dimensions are slightly reduced (3.00mm L x 2.80mm W, 1.85mm height) but remain compatible with 2-PLCC footprint applications. Luminous intensity ranges from 8mcd to 13mcd, bracketing the original 10mcd specification. All three variants are active products with strong inventory levels (15,433 to 9,164 units). ROHS3 compliance and MSL 2A rating are standard across the series.

Vishay VLMD Series (VLMD3100-GS18, VLMD3105-GS08, VLMD31L2N1-GS08, VLMD31M2P1-GS08)

The Vishay VLMD series provides higher luminous intensity options (11.2mcd to 39mcd) with 648nm dominant wavelength in the red spectrum. Forward voltage is 1.8V with 10mA test current. Mechanical dimensions match the VLM3 series (3.00mm L x 2.80mm W, 1.85mm height). These parts are suitable for applications requiring increased brightness while maintaining package compatibility. Inventory availability is strong, particularly for VLMD31L2N1-GS08 (41,200 units). All variants are active products with ROHS3 compliance and MSL 2A rating.

Product Status Consideration

All recommended substitute parts are classified as active products with current manufacturing status, ensuring long-term supply chain continuity. The original QTLP670C2TR is obsolete, making transition to active alternatives necessary for new designs and ongoing production support.

Frequently Asked Questions (FAQ)

Q: Can HSMS-A100-J00J1 or HSMS-A100-L00J1 be used as direct replacements for QTLP670C2TR?

A: Yes. Both Broadcom parts maintain identical package dimensions and 2-PLCC footprint. Forward voltage increases from 2.0V to 2.2V, which is within standard LED circuit tolerance. Dominant wavelength of 626nm remains in the red spectrum. Both are active products with superior inventory availability and improved MSL rating.

Q: What is the difference between the Vishay VLM3 and VLMD series?

A: The primary difference is luminous intensity. VLM3 series (VLMS31 variants) provides 8mcd to 13mcd output, closely matching the original 10mcd specification. VLMD series provides higher brightness options ranging from 11.2mcd to 39mcd. Both series share identical electrical parameters (1.8V to 1.9V forward voltage, 10mA test current) and mechanical dimensions. Selection depends on required brightness for the application.

Q: Are there mechanical compatibility concerns when substituting with Vishay parts?

A: Vishay VLM3 and VLMD series have slightly reduced dimensions (3.00mm L x 2.80mm W, 1.85mm height) compared to the original (3.20mm L x 2.80mm W, 2.10mm height). The 0.2mm length reduction and 0.25mm height reduction are within typical PCB layout tolerances for 2-PLCC footprint applications. Verify footprint compatibility with your specific PCB design before implementation.

Q: What is the significance of MSL rating differences?

A: The original QTLP670C2TR has MSL 3 (168 Hours), while all substitute parts have MSL 2A (4 Weeks). MSL 2A provides superior moisture protection with a longer shelf life window. This represents an improvement in component reliability and storage handling requirements.

Q: Which substitute part offers the closest electrical match to QTLP670C2TR?

A: VLMS31K1L2-GS08 provides the closest match with 630nm dominant wavelength (identical to original), 1.9V forward voltage (0.1V difference), and 13mcd luminous intensity (3mcd difference). This part is recommended for applications requiring minimal electrical parameter deviation from the original specification.

Q: Can I use higher brightness VLMD parts (25mcd to 39mcd) as substitutes?

A: Yes, if your circuit design accommodates increased luminous intensity. Higher brightness parts are suitable for applications where enhanced visibility is beneficial. Verify that your current-limiting resistor design and power budget support the higher brightness output. These parts maintain identical electrical parameters (1.8V forward voltage, 10mA test current) and package compatibility.

Q: What packaging format differences exist between substitute options?

A: Broadcom HSMS-A100 series is supplied in Cut Tape (CT) & Digi-Reel format. Vishay VLM3 and VLMD series are supplied in Tape & Reel (TR) format. Both formats are standard for surface mount production. Verify your assembly process compatibility with the supplied packaging format.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant, matching the compliance status of the original QTLP670C2TR. This ensures regulatory compliance for applications subject to ROHS3 requirements.

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