PY1111C-TR Equivalent & Substitute Parts Reference

Part Overview

The PY1111C-TR is a green diffused 0603 (1608 Metric) surface mount LED manufactured by Stanley Electric Co. This component is classified as obsolete product status, indicating discontinuation from the manufacturer. The part delivers green 572nm wavelength indication at 2.1V forward voltage with 11.7mcd brightness rating and 146° viewing angle in a diffused lens configuration.

Due to obsolete status, equivalent and substitute parts are necessary for ongoing production support, design revisions, and inventory replenishment. Substitute selection must maintain compatibility with existing circuit designs while accounting for variations in electrical characteristics and optical properties.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Package / Case	0603 (1608 Metric)	-	Critical - Physical footprint compatibility
Mounting Type	Surface Mount	-	Critical - Assembly process compatibility
Voltage - Forward (Vf) Typical	2.1V	V	Critical - Circuit design parameter
Current - Test	20mA	mA	Critical - Operating condition reference
Wavelength - Dominant	572nm	nm	Important - Color specification
Millicandela Rating	11.7mcd	mcd	Important - Brightness level
Lens Transparency	Diffused	-	Important - Optical appearance
Viewing Angle	146°	degrees	Important - Light distribution
Size / Dimension	1.60mm L x 0.80mm W	mm	Critical - PCB footprint
Height (Max)	0.80mm	mm	Important - Clearance consideration
RoHS Status	ROHS3 Compliant	-	Critical - Regulatory compliance
Moisture Sensitivity Level (MSL)	4 (72 Hours)	-	Important - Storage and handling

Substitute Part Grouping Explanation

Substitute parts for PY1111C-TR are grouped based on the following substitution criteria:

Primary Compatibility Requirements:

Package / Case: 0603 (1608 Metric) surface mount only
Mounting Type: Surface Mount
Size / Dimension: 1.60mm L x 0.80mm W (standard 0603 footprint)
RoHS Status: ROHS3 Compliant
ECCN / HTSUS: Matching classification (EAR99 / 8541.41.0000)

Electrical Compatibility Parameters:

Voltage - Forward (Vf): Range 1.9V to 3.3V acceptable with circuit design verification
Current - Test: 5mA to 20mA operating range
Wavelength - Dominant: 568nm to 575nm (green to yellow-green spectrum)

Optical Compatibility Parameters:

Lens Style: Rectangle with Flat Top (all substitutes match)
Lens Size: 1.10mm x 0.80mm to 1.20mm x 0.80mm
Viewing Angle: 120° to 146°
Lens Transparency: Diffused or Clear (both acceptable for indication applications)

Secondary Considerations:

Millicandela Rating: 11.7mcd to 400mcd (brightness variation acceptable based on application requirements)
Height (Max): 0.45mm to 0.80mm (all within standard 0603 height envelope)
Moisture Sensitivity Level: MSL 2A to MSL 4 (lower MSL values indicate improved moisture resistance)

Substitutes are presented in order of manufacturer recommendation status, followed by similar alternatives grouped by manufacturer.

Parameter Comparison

Parameter	PY1111C-TR (Main)	VFHD1111C-3B72B-TR	5988060102F	5988070102F	5988081102F	APT1608ZGC	LTST-C193TGKT-5A
Manufacturer	Stanley Electric Co	Stanley Electric Co	Dialight	Dialight	Dialight	Kingbright	Lite-On Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Color	Green	Yellow-Green	Yellow-Green	Green	Green	Green	Green
Wavelength - Dominant (nm)	572	572	573	568	523	525	528
Voltage - Forward (Vf) Typical (V)	2.1	1.9	2.0	2.0	3.2	3.3	2.8
Current - Test (mA)	20	20	20	20	20	20	5
Millicandela Rating (mcd)	11.7	43	40	20	300	400	154
Lens Transparency	Diffused	Diffused	Clear	Clear	Clear	Clear	Clear
Viewing Angle (degrees)	146	140	140	140	140	120	130
Lens Size (mm)	1.10 x 0.80	1.10 x 0.80	1.10 x 0.80	1.10 x 0.80	1.10 x 0.80	1.20 x 0.80	1.15 x 0.80
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Size / Dimension (mm)	1.60 L x 0.80 W	1.60 L x 0.80 W	1.60 L x 0.80 W	1.60 L x 0.80 W	1.60 L x 0.80 W	1.60 L x 0.80 W	1.60 L x 0.80 W
Height (Max) (mm)	0.80	0.80	0.70	0.70	0.70	0.75	0.45
Mounting Type	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
Moisture Sensitivity Level (MSL)	4 (72 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	2A (4 Weeks)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Manufacturer Recommended Substitute:

VFHD1111C-3B72B-TR (Stanley Electric Co) is the primary recommended substitute. This part maintains Stanley Electric Co manufacturing continuity and shares identical package specifications with PY1111C-TR. The part is active product status with improved moisture sensitivity rating (MSL 3 vs. MSL 4). Forward voltage is 1.9V (0.2V lower than original), and brightness is increased to 43mcd. Wavelength remains in the green spectrum at 572nm dominant. This substitute requires circuit design verification for the reduced forward voltage characteristic.

Alternative Substitutes by Application Requirement:

For applications requiring exact diffused lens appearance and minimal optical change, VFHD1111C-3B72B-TR remains the optimal choice among all alternatives.

For applications where clear lens transparency is acceptable and brightness increase is beneficial, Dialight 5988070102F or 5988070107F provide green wavelength (568nm) at 2.0V forward voltage with 20mcd brightness. These parts offer improved moisture sensitivity (MSL 3) and lower profile height (0.70mm).

For applications requiring significantly higher brightness output, Dialight 5988081102F or 5988081107F deliver 300mcd at 523nm green wavelength, though forward voltage increases to 3.2V. Circuit design modification is required for this substitution.

For applications with strict height constraints, LTST-C193TGKT-5A (Lite-On Inc.) provides the lowest profile at 0.45mm height with superior moisture sensitivity (MSL 2A). This part operates at 2.8V forward voltage and 5mA test current, requiring circuit design adjustment.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical EAR99 / 8541.41.0000 classification as the original PY1111C-TR.

Frequently Asked Questions (FAQ)

Q: Can VFHD1111C-3B72B-TR be used as a direct drop-in replacement for PY1111C-TR?

A: VFHD1111C-3B72B-TR is physically compatible (identical 0603 package, 1.60mm x 0.80mm footprint, 0.80mm height). However, the forward voltage differs by 0.2V (1.9V vs. 2.1V). Circuit design verification is required to confirm current-limiting resistor values remain appropriate for the lower forward voltage. Optical appearance differs (yellow-green vs. green wavelength, though both are in the green spectrum at 572nm dominant).

Q: What is the difference between diffused and clear lens transparency?

A: Diffused lens transparency scatters light output, creating a softer, more uniform glow appearance. Clear lens transparency provides sharper, more directional light output. PY1111C-TR uses diffused lens. VFHD1111C-3B72B-TR also uses diffused lens. All Dialight and Kingbright alternatives use clear lens. Application requirements determine acceptability of this change.

Q: Why do some substitutes have significantly higher millicandela ratings?

A: Brightness variation (11.7mcd to 400mcd) reflects different LED chip designs and optical configurations. Higher brightness parts (5988081102F at 300mcd, APT1608ZGC at 400mcd) use different semiconductor materials and lens designs. Selection depends on application visibility requirements. Higher brightness may require circuit design modification to reduce operating current.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance identical to PY1111C-TR. All parts are REACH unaffected and classified as EAR99 / 8541.41.0000.

Q: What does Moisture Sensitivity Level (MSL) mean for component selection?

A: MSL rating indicates maximum storage time at specified humidity before component degradation. PY1111C-TR has MSL 4 (72 hours maximum at 60% relative humidity). Substitute parts with MSL 3 (168 hours) or MSL 2A (4 weeks) provide improved moisture resistance and longer shelf life. Lower MSL values indicate better moisture tolerance.

Q: Can I use APT1608ZGC or LTST-C193TGKT-5A as substitutes?

A: Both parts are physically compatible (0603 package, surface mount). APT1608ZGC operates at 3.3V forward voltage (1.2V higher than original) and delivers 400mcd brightness. LTST-C193TGKT-5A operates at 2.8V forward voltage (0.7V higher) and 5mA test current (vs. 20mA original). Both require circuit design modification. These are suitable only when application requirements justify the electrical changes.

Q: What packaging options are available for substitute parts?

A: PY1111C-TR is supplied in Cut Tape (CT). VFHD1111C-3B72B-TR is available in Cut Tape (CT) & Digi-Reel®. Dialight parts are available in Strip or Tape & Reel (TR) formats. APT1608ZGC is available in Cut Tape (CT) & Digi-Reel®. LTST-C193TGKT-5A is supplied in Tape & Reel (TR). Packaging selection affects procurement and assembly processes.

Q: Which substitute provides the closest electrical match to PY1111C-TR?

A: VFHD1111C-3B72B-TR provides the closest electrical match with only 0.2V forward voltage difference (1.9V vs. 2.1V). Dialight 5988070102F and 5988070107F also provide close match at 2.0V forward voltage (0.1V difference). Both require minimal circuit design adjustment.

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