SML-LX1206SOC-TR Orange LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The SML-LX1206SOC-TR is an orange LED indication component manufactured by Lumex Opto/Components Inc. in 1206 (3216 Metric) surface mount package format. This discrete 2V LED operates at 20mA test current with a dominant wavelength of 610nm and delivers 70 millicandela brightness. The component is Active product status and ROHS3 compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the 1206 SMD package category. Substitution becomes necessary due to inventory availability, lead time requirements, or design flexibility across multiple qualified suppliers.

Key Parameters

Parameter	SML-LX1206SOC-TR
Manufacturer	Lumex Opto/Components Inc.
Package / Case	1206 (3216 Metric)
Color	Orange
Lens Transparency	Clear
Voltage - Forward (Vf) (Typ)	2V
Current - Test	20mA
Millicandela Rating	70mcd
Wavelength - Peak	610nm
Viewing Angle	140°
Mounting Type	Surface Mount
Size / Dimension	3.20mm L x 1.60mm W
Height (Max)	1.10mm
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution logic for the SML-LX1206SOC-TR is based on the following critical parameters:

Primary Compatibility Criteria:

Package / Case: 1206 (3216 Metric) surface mount format
Color: Orange wavelength range (600nm to 615nm peak wavelength)
Lens Transparency: Clear
Voltage - Forward (Vf): 2V nominal operation
Current - Test: 20mA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute Categories:

Category A - Direct Orange LED Substitutes (Same Color, Compatible Vf): Parts that maintain orange color indication with 2V forward voltage and 1206 package compatibility. These include APT3216SECK, LTST-C150KFKT, and LTST-C230KFKT.

Category B - Enhanced Orange LED Substitutes (Higher Brightness): Parts that provide orange indication with slightly elevated forward voltage (2.1V to 2.2V) and increased millicandela ratings. These include APT3216SECK/J4-PRV with 550mcd output.

Category C - Alternative Color Substitutes (Yellow Wavelength): Parts that operate at identical 2V forward voltage and 1206 package but provide yellow indication instead of orange. These include APT3216SYCK and LTST-C150KSKT. These are listed as substitutes but require design confirmation for color-critical applications.

All substitute parts maintain ROHS3 compliance, surface mount configuration, and 1206 package dimensions.

Parameter Comparison

Part Number	Manufacturer	Color	Vf (Typ)	mcd Rating	Peak Wavelength	Viewing Angle	Height (Max)	Inventory
SML-LX1206SOC-TR	Lumex	Orange	2V	70mcd	610nm	140°	1.10mm	2084 Pcs
APT3216SECK	Kingbright	Orange	2.1V	180mcd	610nm	120°	0.75mm	2190 Pcs
APT3216SECK/J4-PRV	Kingbright	Orange	2.2V	550mcd	611nm	120°	0.75mm	15851 Pcs
APT3216SYCK	Kingbright	Yellow	2V	150mcd	590nm	120°	0.75mm	4400 Pcs
APT3216SYCK/J3-PRV	Kingbright	Yellow	2V	320mcd	590nm	120°	0.75mm	20128 Pcs
LTST-C150KFKT	Lite-On Inc.	Orange	2V	90mcd	611nm	130°	1.10mm	125300 Pcs
LTST-C150KSKT	Lite-On Inc.	Yellow	2.1V	70mcd	588nm	130°	1.10mm	140060 Pcs
LTST-C230KFKT	Lite-On Inc.	Orange	2V	90mcd	611nm	130°	1.10mm	2700 Pcs
LTST-C230KSKT	Lite-On Inc.	Yellow	2V	60mcd	588nm	130°	1.10mm	4200 Pcs

Engineering Selection Recommendations

For Direct Replacement (Orange Color, 2V Operation):

LTST-C150KFKT (Lite-On Inc.) provides the closest functional match to SML-LX1206SOC-TR. Both operate at 2V forward voltage, maintain 1206 package dimensions with 1.10mm maximum height, and deliver orange indication at 610nm wavelength range. LTST-C150KFKT offers 90mcd brightness compared to 70mcd of the original part, with 130° viewing angle versus 140°. Inventory availability is 125,300 pieces. Both parts are ROHS3 compliant with identical moisture sensitivity level (MSL 3).

LTST-C230KFKT (Lite-On Inc.) is an alternative orange substitute with identical electrical specifications (2V, 90mcd) and package height (1.10mm). This part features bottom entry mounting configuration and reduced lens size (1.50mm x 1.60mm versus 2.00mm x 1.50mm). MSL rating is 2A (4 Weeks) versus MSL 3 (168 Hours) for the main part. Inventory is 2,700 pieces.

For Higher Brightness Orange Indication:

APT3216SECK/J4-PRV (Kingbright) delivers 550mcd brightness at 2.2V forward voltage with 611nm peak wavelength. This part operates within orange wavelength specification but requires circuit design verification for the 0.2V voltage increase. Height is reduced to 0.75mm. Inventory availability is 15,851 pieces. ROHS3 compliant.

For Alternative Color Applications (Yellow Indication):

APT3216SYCK/J3-PRV (Kingbright) provides yellow indication at 2V forward voltage with 320mcd brightness. This part maintains electrical compatibility with the original 2V specification and 1206 package format. Peak wavelength is 590nm (yellow range). Inventory is 20,128 pieces. ROHS3 compliant. Selection requires design confirmation that yellow color is acceptable for the application.

All recommended substitutes maintain ROHS3 compliance, surface mount configuration, and 1206 (3216 Metric) package compatibility.

Frequently Asked Questions (FAQ)

Q: Can APT3216SECK/J4-PRV replace SML-LX1206SOC-TR directly in the circuit?

A: APT3216SECK/J4-PRV operates at 2.2V forward voltage compared to 2V for the original part. Circuit design must accommodate the 0.2V increase. The part delivers 550mcd versus 70mcd, requiring verification that current-limiting resistor values remain appropriate. Peak wavelength (611nm) remains within orange specification. Height is reduced to 0.75mm, which may affect PCB layout clearance. Electrical compatibility requires design review.

Q: What is the difference between LTST-C230KFKT and LTST-C150KFKT?

A: Both are Lite-On orange LEDs at 2V with 90mcd brightness and 1.10mm height. LTST-C230KFKT features bottom entry mounting configuration with smaller lens size (1.50mm x 1.60mm) and MSL rating of 2A (4 Weeks). LTST-C150KFKT uses standard surface mount with larger lens size (2.06mm x 1.60mm) and MSL rating of 3 (168 Hours). Selection depends on PCB layout requirements and moisture sensitivity handling procedures.

Q: Are yellow LED substitutes (APT3216SYCK series, LTST-C150KSKT, LTST-C230KSKT) electrically compatible?

A: Yellow substitutes maintain 2V forward voltage operation and 1206 package compatibility. However, color indication changes from orange (610nm) to yellow (587nm to 591nm). These parts are listed as substitutes but require design confirmation that yellow color is acceptable for the application. Brightness varies from 60mcd to 320mcd depending on specific part number.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: SML-LX1206SOC-TR and most substitutes carry MSL 3 (168 Hours), requiring storage at controlled humidity and baking procedures before reflow soldering. LTST-C230KFKT and LTST-C230KSKT carry MSL 2A (4 Weeks), allowing longer shelf life at standard conditions. MSL rating affects component handling, storage, and manufacturing procedures but does not impact electrical performance.

Q: Can I use APT3216SECK (180mcd) instead of APT3216SECK/J4-PRV (550mcd)?

A: Both are Kingbright orange LEDs in 1206 package. APT3216SECK operates at 2.1V with 180mcd brightness. APT3216SECK/J4-PRV operates at 2.2V with 550mcd brightness. Selection depends on circuit design requirements for brightness and forward voltage. Both maintain 610nm to 611nm peak wavelength within orange specification. Height is 0.75mm for both parts.

Q: What viewing angle differences exist among substitutes?

A: SML-LX1206SOC-TR provides 140° viewing angle. Kingbright APT3216 series parts provide 120° viewing angle. Lite-On LTST-C150 and LTST-C230 series provide 130° viewing angle. Narrower viewing angles concentrate light intensity in the forward direction. Selection depends on application requirements for light distribution and visibility from different angles.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. REACH status is "REACH Unaffected" for all parts. ECCN classification is EAR99 for all parts. HTSUS code is 8541.41.0000 for all parts. Regulatory compliance is maintained across all substitutes.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message