SMP2-UPGC

Part Overview

The SMP2-UPGC is a green 525nm LED indicator in 2-PLCC surface mount package, rated at 3.3V forward voltage with 850mcd brightness. The part is currently obsolete, making identification of suitable substitute components necessary for ongoing design support and production alternatives. Active alternatives with equivalent or superior performance characteristics are available from multiple manufacturers.

Key Parameters

Parameter	SMP2-UPGC Value
Manufacturer	Bivar Inc.
Package / Case	2-PLCC
Mounting Type	Surface Mount
Color	Green
Wavelength - Dominant	525nm
Voltage - Forward (Vf) (Typ)	3.3V
Current - Test	20mA
Millicandela Rating	850mcd
Viewing Angle	120°
Lens Style	Round with Flat Top
Lens Transparency	Clear
Size / Dimension	3.20mm L x 2.80mm W
Height (Max)	2.00mm
Moisture Sensitivity Level (MSL)	4 (72 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution classification for the SMP2-UPGC is determined by the following critical parameters:

Primary Compatibility Criteria:

Package / Case: 2-PLCC (mechanical fit and pinout)
Mounting Type: Surface Mount (assembly process compatibility)
Lens Transparency: Clear (optical consistency)
Lens Style: Round with Flat Top (mechanical envelope)
Size / Dimension: 3.20mm L x 2.80mm W (PCB routing constraints)
Viewing Angle: 120° (angular light distribution)

Electrical Operating Parameters:

Voltage - Forward (Vf) (Typ): 3.3V nominal operating point
Current - Test: 20mA standard test condition
Wavelength - Dominant: 525nm green spectrum
Millicandela Rating: 850mcd brightness level
Color: Green indication function

Substitutes are classified as parametric equivalents when they match all package and mechanical criteria with nominal forward voltage within ±0.4V and brightness within ±20% of the original specification. Parts with different packages, voltage specifications beyond the tolerance band, or significantly different brightness levels are listed as similar alternatives with noted deviations.

Parameter Comparison

Parameter	SMP2-UPGC (Bivar)	SMTL2-UPGC (Bivar)	67-21/GBC-YV2W2N/2T (Everlight)	HSMM-A100-U4PJ1 (Broadcom)	SML-Z14M4TT86 (Rohm)	SML-Z14MTT86A (Rohm)
Package / Case	2-PLCC	2-PLCC	2-PLCC	2-PLCC	2-PLCC	2-PLCC
Color	Green	Green	Green	Green	Green	Green
Wavelength - Dominant (nm)	525	525	528	525	572	571
Voltage - Forward (Vf) (Typ)	3.3V	3.3V	3.2V	3.4V	2.1V	2.0V
Current - Test	20mA	20mA	20mA	20mA	50mA	20mA
Millicandela Rating	850mcd	850mcd	1350mcd	787.5mcd	224mcd	90mcd
Viewing Angle	120°	120°	120°	120°	—	—
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
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear
Size / Dimension	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W
Height (Max)	2.00mm	2.10mm	2.10mm	2.10mm	2.05mm	2.05mm
Moisture Sensitivity Level (MSL)	4 (72 Hours)	4 (72 Hours)	3 (168 Hours)	2A (4 Weeks)	3 (168 Hours)	4 (72 Hours)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement):

SMTL2-UPGC (Bivar Inc.) is the direct equivalent substitute for SMP2-UPGC. Both parts are identical in electrical and optical specifications (525nm wavelength, 3.3V forward voltage, 850mcd brightness, 120° viewing angle, 2-PLCC package). SMTL2-UPGC is currently in active production status with ROHS3 compliance and Tape & Reel packaging, offering superior supply availability (6221 units in stock) compared to the obsolete SMP2-UPGC.

Similar Alternatives (Package-Compatible Substitutes):

67-21/GBC-YV2W2N/2T (Everlight Electronics) operates within acceptable voltage range (3.2V vs. 3.3V). This part offers increased brightness (1350mcd vs. 850mcd) and superior moisture sensitivity (MSL 3 vs. MSL 4). Wavelength deviation (528nm vs. 525nm) is within typical green LED color perception tolerances. ROHS3 compliant with 991 units available.

HSMM-A100-U4PJ1 (Broadcom Limited) maintains 525nm wavelength accuracy and 120° viewing angle with slightly elevated forward voltage (3.4V). Brightness specification (787.5mcd) is within 7% of the original. Enhanced moisture sensitivity rating (MSL 2A) and ROHS3 compliance. 2100 units in stock with Tape & Reel packaging.

Package-Different Alternatives (Functional Substitutes):

67-21/GHC-AS2U1B17Z/2T and 67-21/GHC-BV1/2T (Everlight Electronics) use 1411 (3528 Metric) package format, mechanically incompatible with 2-PLCC PCB layouts. Consider only when redesign or separate assembly point is feasible.

SML-Z14M4TT86 and SML-Z14MTT86A (Rohm Semiconductor) exhibit substantially different wavelength (571–572nm vs. 525nm, yellow-green spectrum shift) and significantly reduced brightness (90–224mcd vs. 850mcd). Forward voltage reduction (2.0–2.1V) requires circuit redesign. These parts are suitable only for new designs where yellow-green color and lower brightness are acceptable.

Frequently Asked Questions (FAQ)

Q: Can SMTL2-UPGC be used as a direct drop-in replacement for SMP2-UPGC?

A: Yes. SMTL2-UPGC is electrically and mechanically identical to SMP2-UPGC with matching 2-PLCC package dimensions (3.20mm L x 2.80mm W), forward voltage (3.3V), current rating (20mA), wavelength (525nm), and brightness (850mcd). The primary difference is product status (active vs. obsolete) and packaging format (Tape & Reel availability). No circuit modifications are required.

Q: What is the wavelength tolerance for green LED substitution?

A: The SMP2-UPGC operates at 525nm dominant wavelength. Alternatives with 528nm (67-21/GBC-YV2W2N/2T) remain within acceptable green LED color specification for indicator applications. Parts with 571–572nm wavelength exhibit yellow-green appearance and are not suitable for color-critical indication functions.

Q: How do voltage differences affect circuit compatibility?

A: Forward voltage tolerance is ±0.4V from 3.3V nominal. SMTL2-UPGC (3.3V), 67-21/GBC-YV2W2N/2T (3.2V), and HSMM-A100-U4PJ1 (3.4V) all operate within this tolerance band and require no circuit adjustment. SML-Z14 series parts (2.0–2.1V) represent significant voltage reduction requiring redesign of current-limiting resistor networks and are not interchangeable without circuit modification.

Q: Is package/case format critical for substitution?

A: Yes. The SMP2-UPGC uses 2-PLCC package. Direct PCB compatibility is limited to alternative parts with identical 2-PLCC package and matching 3.20mm L x 2.80mm W dimensions. Parts using 1411 (3528 Metric) package cannot be used on existing PCB layouts designed for 2-PLCC components. Height differences (2.00–2.10mm) should be evaluated against clearance constraints in populated assemblies.

Q: What does MSL (Moisture Sensitivity Level) rating indicate for substitution decisions?

A: MSL rating defines shelf life and reflow soldering exposure limits. SMP2-UPGC and SMTL2-UPGC both specify MSL 4 (72-hour limit), while 67-21/GBC-YV2W2N/2T and SML-Z14M4TT86 specify MSL 3 (168-hour limit), and HSMM-A100-U4PJ1 specifies MSL 2A (4-week limit). Lower MSL numbers provide longer handling windows. All parts are suitable for standard manufacturing processes; MSL differences become relevant only for extended storage or high-humidity warehousing conditions.

Q: Why do some substitutes show significantly different brightness ratings?

A: Millicandela rating depends on die design, lens geometry, and optical materials. While the original SMP2-UPGC is rated 850mcd, 67-21/GBC-YV2W2N/2T delivers 1350mcd (59% higher) from improved optical design within the same package envelope. SML-Z14 series parts deliver substantially lower brightness (90–224mcd) due to different LED die and are suitable only for applications where reduced light output is acceptable or required.

Q: Are RoHS and REACH certifications required for substitution?

A: Current active substitutes including SMTL2-UPGC, 67-21/GBC-YV2W2N/2T, HSMM-A100-U4PJ1, and SML-Z14 series all carry ROHS3 compliance certification. REACH status varies (Unaffected or not specified in original part data). If regulatory compliance documentation is required, verify certifications directly with manufacturers. The obsolete SMP2-UPGC does not carry RoHS certification status in available data.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message