QTLP670CIGTR Green LED 2-PLCC Surface Mount Equivalent & Substitute Parts

Part Overview

The QTLP670CIGTR is an active green LED indication component manufactured by Everlight Electronics Co Ltd, designed for surface mount applications in 2-PLCC packaging. This discrete LED operates at 3.5V forward voltage with a dominant wavelength of 525nm and delivers 115mcd luminous intensity. The component is ROHS3 compliant and maintains active product status with 957 units in current inventory.

Substitute parts are identified to address supply chain continuity, inventory availability, or specific application requirements where electrical and mechanical parameters remain within acceptable tolerance ranges for the intended circuit design.

Substiute Parts

QTLP670CIGTR

Everlight Electronics Co LtdIn Stock: 1040QTLP670CIGTR Datasheet

Current PartRFQ

HSMM-A100-U4PJ1

Broadcom LimitedIn Stock: 2178HSMM-A100-U4PJ1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QTLP670CIGTR are identified based on strict alignment of the following critical parameters:

Electrical Parameters:

• Color: Green (525nm dominant wavelength range)
• Forward Voltage (Vf): 3.4V to 3.5V range (circuit compatibility tolerance)
• Test Current: 20mA (standard operating point)
• Viewing Angle: 120° (optical performance consistency)

Mechanical Parameters:

• Package Type: 2-PLCC (footprint compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Lens Style: Round with Flat Top (mechanical fit)
• Lens Size: 2.20mm to 2.40mm diameter (acceptable variation)
• Overall Dimensions: 3.20mm L x 2.80mm W (PCB footprint match)
• Height: 2.10mm maximum (clearance compatibility)

Regulatory & Compliance:

• RoHS3 Compliance (environmental standard)
• ECCN: EAR99 (export classification)

Substitutes meeting all critical parameters are listed below. Brightness (millicandela rating) variations are noted as application-dependent and do not disqualify substitution where circuit design accommodates the difference.

Parameter Comparison

Engineering Selection Recommendations

HSMM-A100-U4PJ1 (Broadcom Limited) Substitution Basis:

The HSMM-A100-U4PJ1 qualifies as a direct substitute for the QTLP670CIGTR based on the following engineering criteria:

1. Electrical Compatibility: Forward voltage of 3.4V is within 0.1V of the 3.5V specification, maintaining circuit compatibility in standard LED driver configurations. Both components operate at identical 20mA test current and share the same 525nm dominant wavelength.

2. Mechanical Compatibility: Both components utilize identical 2-PLCC packaging with matching 3.20mm x 2.80mm footprint dimensions and 2.10mm maximum height. Lens diameter variation of 0.2mm (2.40mm to 2.20mm) remains within acceptable mechanical tolerance for standard PCB assembly processes.

3. Optical Performance: Identical 120° viewing angle and matching dominant wavelength (525nm) ensure consistent optical behavior in indication applications. The HSMM-A100-U4PJ1 delivers 787.5mcd compared to 115mcd in the original part; brightness increase is application-dependent and does not prevent substitution where circuit design accommodates higher luminous intensity.

4. Regulatory Compliance: Both components maintain ROHS3 compliance and EAR99 export classification, satisfying environmental and trade requirements.

5. Product Status: Both components carry active product status with confirmed inventory availability (2100 units for HSMM-A100-U4PJ1 versus 957 units for QTLP670CIGTR).

6. Packaging Format Difference: The substitute is supplied in Tape & Reel format versus bulk packaging for the original part. This difference affects procurement and assembly logistics but does not impact electrical or mechanical performance.

7. Moisture Sensitivity: The HSMM-A100-U4PJ1 carries MSL 2A (4 weeks) compared to MSL 3 (168 hours) for the original part, indicating superior moisture tolerance during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the HSMM-A100-U4PJ1 be used as a direct replacement for the QTLP670CIGTR on existing PCBs?

A: Yes. Both components share identical 2-PLCC package dimensions (3.20mm L x 2.80mm W), maximum height (2.10mm), and footprint specifications. PCB layout modifications are not required. The 0.2mm lens diameter difference (2.40mm to 2.20mm) does not affect mechanical fit or assembly compatibility.

Q: What is the impact of the 0.1V forward voltage difference (3.5V vs 3.4V)?

A: The 0.1V difference is within standard circuit design tolerance for LED driver circuits. This variation does not require circuit redesign in typical indication applications. Verify that the LED driver or current-limiting resistor accommodates the slight voltage difference if operating near circuit margin limits.

Q: The HSMM-A100-U4PJ1 is significantly brighter (787.5mcd vs 115mcd). Is this a problem?

A: Brightness difference is application-dependent. If the original design requires 115mcd for specific visibility or power consumption targets, the higher brightness of the substitute may not be suitable. If brightness is not a critical constraint, the higher luminous intensity provides improved visibility margin. Evaluate application requirements before substitution.

Q: What is the difference between bulk packaging and Tape & Reel format?

A: Tape & Reel (TR) packaging is standard for automated assembly processes and high-volume production. Bulk packaging is typical for lower-volume or manual assembly applications. The component itself is identical; packaging format affects procurement, storage, and assembly line compatibility only.

Q: Are there any compliance or regulatory differences between these parts?

A: Both components are ROHS3 compliant and carry EAR99 export classification. No regulatory barriers exist for substitution. The HSMM-A100-U4PJ1 includes REACH Unaffected status, providing additional regulatory documentation.

Q: What does the MSL rating difference mean (MSL 3 vs MSL 2A)?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption tolerance during storage. MSL 3 allows 168 hours of exposure before baking is required; MSL 2A allows 4 weeks. The HSMM-A100-U4PJ1 has superior moisture tolerance, reducing risk of moisture-related failures during extended storage or in humid environments.

Q: Can I mix QTLP670CIGTR and HSMM-A100-U4PJ1 components in the same production batch?

A: Yes, from a mechanical and electrical standpoint. Both components are functionally equivalent for the specified application parameters. However, brightness variation (115mcd vs 787.5mcd) may create visual inconsistency if multiple LEDs are visible in the same assembly. Evaluate application requirements for brightness uniformity.

Q: What should I verify before implementing this substitution in production?

A: Confirm that your circuit design accommodates the 3.4V forward voltage and 787.5mcd brightness of the substitute. Verify that the Tape & Reel packaging format is compatible with your assembly process. Validate that the higher brightness does not create unintended visual effects in the end application.