SMP2-RC LED Red Clear 2PLCC SMD Equivalent & Substitute Parts

Part Overview

The SMP2-RC is a red 640nm LED indication component manufactured by Bivar Inc. in a 2-PLCC surface mount package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing production support and design flexibility.

The SMP2-RC operates at a forward voltage of 1.85V with a 20mA test current and provides 36mcd luminous intensity with a 120° viewing angle. The device is housed in a compact 3.20mm × 2.80mm package with a maximum height of 2.00mm, suitable for applications requiring space-constrained LED indication circuits.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMP2-RC
Manufacturer	Bivar Inc.
Product Status	Obsolete
Color	Red
Wavelength - Dominant	640nm
Voltage - Forward (Vf) (Typ)	1.85V
Current - Test	20mA
Millicandela Rating	36mcd
Viewing Angle	120°
Lens Style	Round with Flat Top
Lens Transparency	Clear
Package / Case	2-PLCC
Size / Dimension	3.20mm L × 2.80mm W
Height (Max)	2.00mm
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	4 (72 Hours)

Substitute Part Grouping Explanation

Substitution of the obsolete SMP2-RC is determined by compatibility in the following electrical and mechanical parameters:

Primary substitution criteria:

Package type: 2-PLCC surface mount configuration
Color: Red LED indication
Lens transparency: Clear
Viewing angle: 120°
Mounting type: Surface Mount

Secondary compatibility parameters:

Forward voltage (Vf): 1.85V nominal (allowable variation within circuit design tolerances)
Test current: 20mA operational condition
Physical dimensions: 3.20mm L × 2.80mm W footprint compatibility
Millicandela rating: 36mcd or higher for brightness consistency

Substitute parts are classified into two categories:

Parametric Equivalent: Direct functional replacement with identical electrical characteristics and package specifications. SMTL2-RC from Bivar Inc. provides complete parameter alignment with active product status.

Similar Parts: Components meeting core package, color, and mounting requirements but with variations in forward voltage, millicandela rating, wavelength, or package size. These require circuit validation for integration.

Parameter Comparison

Parameter	SMP2-RC (Bivar)	SMTL2-RC (Bivar)	67-21-R7SC-T1R1S1B7E-2T8-AM (Everlight)	67-21/R6C-AP2R1B/2T (Everlight)	AA3528SESK/J3 (Kingbright)	AA3528SES/J3-AMT (Kingbright)
Color	Red	Red	Red	Red	Red	Red
Voltage - Forward (Vf)	1.85V	1.85V	2.05V	2.05V	2.2V	2.2V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	36mcd	36mcd	168mcd	99mcd	450mcd	650mcd
Wavelength - Dominant	640nm	640nm	630nm	626nm	625nm	635nm
Package / Case	2-PLCC	2-PLCC	2-PLCC	2-SMD, J-Lead	2-PLCC	2-PLCC
Size / Dimension	3.20mm L × 2.80mm W	3.20mm L × 2.80mm W	3.20mm L × 2.80mm W	3.10mm L × 2.70mm W	3.20mm L × 2.80mm W	3.20mm L × 2.80mm W
Height (Max)	2.00mm	2.10mm	2.10mm	2.10mm	2.10mm	2.10mm
Viewing Angle	120°	120°	120°	120°	120°	120°
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	4 (72 Hours)	4 (72 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

Recommended Direct Replacement: SMTL2-RC (Bivar Inc.) is the primary equivalent for SMP2-RC. This part maintains identical electrical specifications (1.85V forward voltage, 36mcd) and package configuration (2-PLCC, 3.20mm × 2.80mm). SMTL2-RC carries active product status and ROHS3 compliance, eliminating obsolescence concerns for new production and long-term supply security.

Alternative Selections:

AA3528SESK/J3 (Kingbright): Active product status with 2-PLCC package compatibility and identical 3.20mm × 2.80mm footprint. Forward voltage increase to 2.2V requires circuit-level verification. Millicandela rating of 450mcd exceeds SMP2-RC requirements. Tape & Reel packaging provides standard production support.
AA3528SES/J3-AMT (Kingbright): Similar to AA3528SESK/J3 with active product status and ROHS3 compliance. Millicandela rating of 650mcd demands circuit-level brightness analysis. Forward voltage of 2.2V requires verification for compatibility with existing current-limiting resistor networks.

Conditional Selection:

67-21-R7SC-T1R1S1B7E-2T8-AM (Everlight): Maintains 2-PLCC package and identical footprint. Forward voltage increases to 2.05V; millicandela rating of 168mcd requires brightness validation. Active product status and ROHS3 compliance confirmed.
67-21/R6C-AP2R1B/2T (Everlight): Package variation to 2-SMD J-Lead with slightly reduced footprint (3.10mm × 2.70mm). Forward voltage of 2.05V and 99mcd brightness require circuit verification. Active product status and ROHS3 compliance confirmed.

Frequently Asked Questions (FAQ)

Q: What is the primary difference between SMP2-RC and SMTL2-RC? A: SMTL2-RC is the active production equivalent of the obsolete SMP2-RC. Both components share identical electrical specifications (1.85V forward voltage, 36mcd brightness, 640nm wavelength) and 2-PLCC package configuration. SMTL2-RC differs only in product status (Active vs. Obsolete) and packaging format (Tape & Reel), providing drop-in replacement capability.

Q: Can I substitute Kingbright AA3528SESK/J3 for SMP2-RC directly? A: Direct substitution requires circuit validation. The AA3528SESK/J3 maintains 2-PLCC package compatibility and identical footprint (3.20mm × 2.80mm) but increases forward voltage from 1.85V to 2.2V. This 0.35V increase affects current-limiting resistor calculations. The 450mcd brightness rating exceeds SMP2-RC specification; brightness perception in the application must be evaluated.

Q: Do all substitute parts have identical moisture sensitivity? A: No. SMP2-RC and SMTL2-RC specify MSL 4 (72 Hours). Everlight and Kingbright alternatives specify MSL 3 (168 Hours), indicating improved moisture tolerance. This difference impacts component storage and reflow processing timelines but does not affect functional compatibility.

Q: What package differences exist in the substitute part list? A: Most substitutes maintain the 2-PLCC package standard. Exception: 67-21/R6C-AP2R1B/2T uses a 2-SMD J-Lead package with slightly reduced dimensions (3.10mm L × 2.70mm W vs. 3.20mm × 2.80mm). This variation requires printed circuit board layout verification to ensure proper component placement and solder joint integrity.

Q: How does wavelength variation between 640nm and 625nm affect application suitability? A: All substitutes remain within the red LED spectrum (625nm to 640nm). Visual color perception differences are minimal within this wavelength band. Application-specific requirements—such as matching LED color in multi-LED displays or color-coded status indicators—determine suitability. No functional electronic compatibility issue results from this wavelength variation.

Q: Are all substitute parts ROHS3 compliant? A: SMTL2-RC and all listed Everlight and Kingbright components carry ROHS3 compliance. SMP2-RC compliance status is not specified in the provided data. For applications requiring documented RoHS compliance, SMTL2-RC provides the optimal direct replacement with certified compliance documentation.

Q: What is the impact of higher millicandela ratings in substitute parts? A: Substitute parts like AA3528SES/J3-AMT (650mcd) and 67-21/RSC-FT2V1B/2T (630mcd) exceed the SMP2-RC brightness specification (36mcd). Higher brightness may be perceptually noticeable in darkened environments or applications sensitive to visual intensity. Circuit-level current limiting remains consistent at 20mA test current; brightness differences result from improved LED efficiency, not increased electrical stress.

Q: Can I use 1411 (3528 Metric) package parts as substitutes? A: Parts with 1411 (3528 Metric) package designation require significant circuit board redesign. While these components meet color and wavelength specifications, the 3.50mm L × 2.80mm W footprint and 0.85mm height differ substantially from the 3.20mm × 2.80mm × 2.00mm SMP2-RC envelope. Direct substitution into existing PCB layouts is not possible without layout modification.

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