FR1113F-TR Red LED SMD Right Angle Equivalent & Substitute Parts

Part Overview

The FR1113F-TR is a red diffused LED indicator manufactured by Stanley Electric Co., designed for surface mount right angle applications. This component features a 626nm dominant wavelength with 50mcd brightness rating and operates at 1.9V forward voltage with 20mA test current. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain compatibility with the original electrical specifications, mechanical form factor, and optical characteristics while offering active product status and current availability.

Key Parameters

Parameter	Value	Specification Type
Color	Red	Optical
Wavelength - Dominant	626nm	Optical
Wavelength - Peak	635nm	Optical
Millicandela Rating	50mcd	Optical
Voltage - Forward (Vf) Typical	1.9V	Electrical
Current - Test	20mA	Electrical
Viewing Angle	134°, 150°	Optical
Lens Transparency	Diffused	Optical
Lens Style	Rectangle with Domed Top	Mechanical
Mounting Type	Surface Mount, Right Angle	Mechanical
Package / Case	2-SMD, No Lead	Mechanical
Size / Dimension	2.10mm L x 1.00mm W	Mechanical
Height (Max)	0.60mm	Mechanical
Moisture Sensitivity Level (MSL)	4 (72 Hours)	Environmental

Substitute Part Grouping Explanation

Substitution eligibility for the FR1113F-TR is determined by strict alignment with the following critical parameters:

Electrical Compatibility: Forward voltage (Vf) must fall within the operating range of 1.9V to 2.0V. Test current remains constant at 20mA across all candidates.

Optical Characteristics: Dominant wavelength must remain in the red spectrum (620nm to 635nm range). Millicandela rating may vary within acceptable brightness tolerance for indication applications (40mcd to 125mcd). Lens transparency (diffused or clear) and viewing angle (130° to 156°) represent functional variations that do not preclude substitution.

Mechanical Form Factor: Mounting type must be surface mount with right angle configuration. Package classification (2-SMD, No Lead or 0805 metric) and physical dimensions represent the primary mechanical constraint. Height variation up to 1.00mm is acceptable for right angle mounting applications.

Compliance & Availability: Active product status and RoHS3 compliance are preferred for new designs. REACH compliance and EAR99 classification are consistent across all candidates.

The four substitute parts listed below satisfy these criteria with documented electrical and mechanical compatibility to the FR1113F-TR.

Parameter Comparison

Parameter	FR1113F-TR (Main)	5972002607F	5973003407F	LTST-S220EKT	SML-A12UTT86
Manufacturer	Stanley Electric Co	Dialight	Dialight	Lite-On Inc.	Rohm Semiconductor
Product Status	Obsolete	Active	Active	Active	Not For New Designs
Color	Red	Red	Red	Red	Red
Wavelength - Dominant (nm)	626	631	—	621	624
Wavelength - Peak (nm)	635	—	630	630	—
Millicandela Rating (mcd)	50	125	50	4	100
Voltage - Forward (Vf) Typical (V)	1.9	2.0	1.9	2.0	2.0
Current - Test (mA)	20	20	20	20	20
Viewing Angle (degrees)	134, 150	130	156	130	—
Lens Transparency	Diffused	Diffused	Clear	Clear	Clear
Lens Style	Rectangle with Domed Top	Rectangle with Domed Top	Rectangle with Flat Top	Rectangle with Domed Top	Rectangle with Flat Top
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount	Surface Mount, Right Angle	Surface Mount, Right Angle
Package / Case	2-SMD, No Lead	2-SMD, No Lead	0805 (2012 Metric)	0805 (2012 Metric)	2-SMD, No Lead
Size / Dimension (mm)	2.10 L x 1.00 W	3.00 L x 2.00 W	2.00 L x 1.25 W	2.10 L x 1.00 W	1.60 L x 1.15 W
Height (Max) (mm)	0.60	1.00	0.80	0.60	0.65
RoHS Status	—	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)

Engineering Selection Recommendations

Primary Recommendation: 5973003407F (Dialight microLED®)

The 5973003407F offers the closest electrical match with 1.9V forward voltage identical to the FR1113F-TR and maintains 50mcd brightness rating. Active product status and ROHS3 compliance support long-term supply chain viability. The 0805 package represents a standard metric footprint with widespread PCB design support. Clear lens transparency and 156° viewing angle provide enhanced visibility in applications where diffused optics are not critical. Height of 0.80mm accommodates standard right angle mounting clearances. This part is recommended for new designs and production transitions.

Secondary Recommendation: LTST-S220EKT (Lite-On Inc.)

The LTST-S220EKT provides mechanical and dimensional equivalence with identical 2.10mm x 1.00mm footprint and 0.60mm height matching the FR1113F-TR. Forward voltage of 2.0V and 20mA test current fall within acceptable operating parameters. Active product status and ROHS3 compliance ensure supply availability. The 4mcd brightness rating represents a significant reduction from the original 50mcd specification and is suitable only for applications where lower luminous intensity is acceptable. Right angle mounting configuration is preserved. This part is suitable for direct PCB layout compatibility.

Tertiary Recommendation: 5972002607F (Dialight microLED®)

The 5972002607F delivers enhanced brightness at 125mcd with 2.0V forward voltage and active product status. ROHS3 compliance and 3-level MSL rating provide improved environmental handling. The 1208 package and 3.00mm x 2.00mm footprint represent a larger form factor requiring PCB layout modification. Height of 1.00mm is acceptable for right angle applications. This part is recommended where increased luminous intensity is required and PCB space permits larger component placement.

Not Recommended for New Designs: SML-A12UTT86 (Rohm Semiconductor)

The SML-A12UTT86 carries "Not For New Designs" product status, indicating manufacturer discontinuation trajectory. While electrical specifications (2.0V, 20mA, 100mcd) are compatible and ROHS3 compliance is confirmed, the product lifecycle status precludes recommendation for new production. This part may be considered only for legacy system maintenance where existing inventory exists.

Frequently Asked Questions (FAQ)

Q: Can the FR1113F-TR be directly replaced with the 5973003407F without PCB modification?

A: The 5973003407F uses a 0805 (2012 Metric) package versus the FR1113F-TR's 2-SMD, No Lead package. PCB footprint modification is required. However, the 2.00mm x 1.25mm body dimensions and 0.80mm height are compatible with standard right angle mounting clearances. Verify PCB pad layout compatibility before implementation.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference between FR1113F-TR and substitute parts?

A: The FR1113F-TR specifies MSL 4 (72 Hours), while all substitute parts specify MSL 3 (168 Hours). MSL 3 represents improved moisture tolerance, allowing extended storage and handling time before reflow soldering. This is a favorable characteristic for supply chain logistics and does not create compatibility issues.

Q: Does lens transparency (diffused vs. clear) affect electrical compatibility?

A: Lens transparency is an optical characteristic that does not affect electrical compatibility. Diffused lenses scatter light over a wider area with reduced peak intensity, while clear lenses concentrate light in a narrower beam. Selection depends on application requirements for light distribution pattern, not electrical function.

Q: Why does the LTST-S220EKT have only 4mcd brightness compared to the FR1113F-TR's 50mcd?

A: The 4mcd rating reflects the specific optical design and lens configuration of the LTST-S220EKT. This represents a significant reduction in luminous intensity and is suitable only for applications where lower brightness is acceptable or where the LED serves as a status indicator in controlled lighting environments. Verify application brightness requirements before selection.

Q: Is the 2.0V forward voltage of substitute parts compatible with circuits designed for 1.9V?

A: The 0.1V difference falls within typical LED forward voltage tolerance ranges. Circuits designed for 1.9V operation will function with 2.0V parts, though current draw may increase slightly depending on series resistor values. Verify circuit design margins and current limiting resistor calculations for the specific application.

Q: Can the 5972002607F be used in space-constrained applications?

A: The 5972002607F measures 3.00mm x 2.00mm, representing a 43% increase in footprint area compared to the FR1113F-TR's 2.10mm x 1.00mm dimensions. This part is not suitable for space-constrained applications. The 5973003407F or LTST-S220EKT are preferred for compact designs.

Q: What is the viewing angle significance in LED indicator selection?

A: Viewing angle defines the cone of light emission. The FR1113F-TR specifies 134° to 150°, while substitutes range from 130° to 156°. Wider viewing angles (156°) provide visibility from more oblique angles, while narrower angles concentrate light in a specific direction. Selection depends on the physical mounting orientation and observer position relative to the LED.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all four substitute parts carry ROHS3 Compliant certification. The FR1113F-TR does not specify RoHS status. ROHS3 compliance ensures restriction of hazardous substances and supports environmental regulatory requirements for new product designs.

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