Equivalent & Substitute Parts for 5972002602F

Part Overview

The Dialight 5972002602F is a red diffused LED indication component in 1208 SMD surface mount right-angle configuration. This microLED® series component features a 631nm dominant wavelength with 125mcd brightness rating and 2V forward voltage operation at 20mA test current. The part maintains Active product status with full ROHS3 compliance and Moisture Sensitivity Level 3 rating.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits alternative optical or mechanical characteristics within acceptable electrical parameters.

Key Parameters

Parameter	Value	Specification Basis
Color	Red	Visual indication requirement
Wavelength - Dominant	631nm	Optical specification
Voltage - Forward (Vf)	2V	Circuit design parameter
Current - Test	20mA	Operating condition
Mounting Type	Surface Mount, Right Angle	PCB assembly requirement
Package / Case	2-SMD, No Lead	Physical footprint
Size / Dimension	3.00mm L x 2.00mm W	PCB layout constraint
Height (Max)	1.00mm	Clearance requirement
Lens Transparency	Diffused	Optical characteristic
RoHS Status	ROHS3 Compliant	Environmental compliance

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

Color: Red
Mounting Type: Surface Mount, Right Angle
Package / Case: 2-SMD, No Lead
Size / Dimension: 3.00mm L x 2.00mm W
Height (Max): 1.00mm
Voltage - Forward (Vf): 2V nominal
Current - Test: 20mA
RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

Wavelength - Dominant: ±20nm tolerance (611nm to 651nm range)
Millicandela Rating: ±50% brightness variation acceptable
Lens Transparency: Clear or Diffused (optical output difference)
Viewing Angle: ±20° variation
Moisture Sensitivity Level: MSL 2A to MSL 4 acceptable
Product Status: Active or Obsolete (with inventory availability consideration)

Five substitute parts meet the mandatory parameter requirements with documented electrical and mechanical compatibility.

Parameter Comparison

Parameter	5972002602F (Dialight)	LTST-S321KRKT (Lite-On)	HSMC-C680 (Broadcom)	HSMS-C680 (Broadcom)	APA3010EC (Kingbright)	BR1101F-TR (Stanley)
Manufacturer	Dialight	Lite-On Inc.	Broadcom Limited	Broadcom Limited	Kingbright	Stanley Electric Co
Color	Red	Red	Red	Red	Red	Red
Wavelength - Dominant (nm)	631	631	630	621	625	647
Voltage - Forward (Vf)	2V	2V	2V	2V	2V	1.7V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	125mcd	54mcd	62.3mcd	5.1mcd	15mcd	12.4mcd
Lens Transparency	Diffused	Clear	Clear	Clear	Clear	Clear
Viewing Angle	130°	130°	115°	125°	120°	174°, 130°
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle
Package / Case	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead
Size / Dimension	3.00mm L x 2.00mm W	3.00mm L x 2.00mm W	3.00mm L x 1.00mm W	3.00mm L x 1.00mm W	3.00mm L x 2.00mm W	3.00mm L x 2.00mm W
Height (Max)	1.00mm	1.00mm	1.00mm	1.00mm	1.00mm	1.00mm
Product Status	Active	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	2A (4 Weeks)	2A (4 Weeks)	3 (168 Hours)	4 (72 Hours)
Inventory Status	988 Pcs	12695 Pcs	37810 Pcs	43118 Pcs	2709 Pcs	1590 Pcs

Engineering Selection Recommendations

LTST-S321KRKT (Lite-On Inc.) represents the closest electrical and optical match. This part maintains identical forward voltage (2V), wavelength specification (631nm), viewing angle (130°), and physical dimensions (3.00mm L x 2.00mm W). Active product status with established supply availability (12,695 units) and MSL 3 rating provide equivalent reliability characteristics. The primary difference is lens transparency (Clear vs. Diffused), which affects light distribution but not circuit compatibility.

HSMC-C680 (Broadcom Limited) offers superior inventory availability (37,810 units) with compatible electrical parameters (2V, 20mA). The wavelength specification (630nm) falls within acceptable tolerance of the primary part. Physical dimension variance (3.00mm L x 1.00mm W) requires PCB layout verification. MSL 2A rating indicates lower moisture sensitivity, providing enhanced reliability in humid environments. Clear lens transparency differs from the primary part's diffused specification.

HSMS-C680 (Broadcom Limited) maintains full electrical compatibility (2V, 20mA) with highest inventory availability (43,118 units). Wavelength specification (621nm) remains within acceptable range. Identical physical dimension variance to HSMC-C680 applies. MSL 2A rating provides equivalent or superior moisture protection. Significantly lower brightness rating (5.1mcd vs. 125mcd) restricts application to low-intensity indication requirements only.

APA3010EC (Kingbright) provides compatible electrical operation (2V, 20mA) with matching physical dimensions (3.00mm L x 2.00mm W). Wavelength specification (625nm) and viewing angle (120°) remain within acceptable parameters. Active product status with adequate inventory (2,709 units) supports supply continuity. MSL 3 rating matches the primary part. Brightness rating (15mcd) represents significant reduction from primary specification.

BR1101F-TR (Stanley Electric Co) exhibits electrical deviation with 1.7V forward voltage specification, requiring circuit design verification before substitution. Obsolete product status with limited inventory (1,590 units) restricts long-term availability. MSL 4 rating indicates higher moisture sensitivity compared to the primary part. Wavelength specification (647nm) and superior viewing angle (174°, 130°) provide alternative optical characteristics. This part is suitable only for immediate replacement scenarios with documented circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can HSMC-C680 or HSMS-C680 substitute for 5972002602F despite the 1.00mm width dimension difference?

A: Physical dimension variance (3.00mm L x 1.00mm W vs. 3.00mm L x 2.00mm W) requires PCB footprint verification. The narrower width may not align with existing solder pads designed for the 2.00mm width specification. PCB layout modification is necessary before implementation.

Q: What is the impact of lens transparency differences between Diffused and Clear options?

A: Diffused lenses scatter light across a wider spatial distribution with reduced peak intensity in the direct viewing axis. Clear lenses concentrate light intensity along the primary viewing angle. Optical performance differs significantly; application requirements determine acceptability. Brightness ratings reflect these differences.

Q: Is BR1101F-TR suitable as a direct replacement despite 1.7V forward voltage specification?

A: The 1.7V forward voltage deviates from the 2V primary specification. Circuit design must accommodate this voltage difference through resistor value adjustment or verification that the circuit tolerates 1.7V operation. Obsolete product status also limits long-term availability. This part is suitable only for immediate replacement with documented circuit compatibility testing.

Q: Which substitute part offers the best supply continuity?

A: HSMS-C680 provides the highest inventory availability (43,118 units) with Active product status. HSMC-C680 (37,810 units) offers comparable supply security. Both Broadcom parts ensure sustained availability for production requirements.

Q: How do MSL ratings affect storage and handling requirements?

A: MSL 2A (4 Weeks) requires component use within 4 weeks of package opening. MSL 3 (168 Hours) permits 7-day storage after opening. MSL 4 (72 Hours) limits storage to 3 days. Lower MSL numbers indicate superior moisture resistance. Storage environment humidity control becomes more critical with higher MSL ratings.

Q: Can LTST-S321KRKT replace 5972002602F in all applications?

A: LTST-S321KRKT maintains electrical compatibility (2V, 20mA) and identical physical dimensions. The primary difference is lens transparency (Clear vs. Diffused). Applications requiring diffused light distribution may experience altered optical performance. Brightness rating (54mcd vs. 125mcd) represents 57% reduction, affecting visibility in high-ambient-light environments.

Q: What is the significance of wavelength tolerance in red LED substitution?

A: Red LEDs span 620nm to 650nm range. Wavelength differences affect perceived color hue and human eye sensitivity. The 631nm primary specification and acceptable ±20nm tolerance (611nm to 651nm) ensure consistent red color appearance across substitute parts. Wavelengths outside this range may appear orange or deep red, affecting visual indication consistency.

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