SM1206GC Green LED 1206 SMD Equivalent & Substitute Parts

Part Overview

The SM1206GC is an active green LED indication component manufactured by Bivar Inc. in 1206 (3216 Metric) surface mount package format. This discrete LED operates at a forward voltage of 2.1V with a test current of 20mA, providing green light emission at 565nm dominant wavelength with 15mcd brightness output. The component is packaged in Tape & Reel format and maintains ROHS3 compliance with MSL 4 rating.

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or when equivalent electrical and mechanical parameters align with application specifications.

Key Parameters

Parameter	Value	Unit
Package / Case	1206 (3216 Metric)	-
Mounting Type	Surface Mount	-
Color	Green	-
Lens Transparency	Clear	-
Size / Dimension	3.20mm L x 1.60mm W	mm
Voltage - Forward (Vf) (Typ)	2.1V	V
Current - Test	20mA	mA
Wavelength - Dominant	565nm	nm
Millicandela Rating	15mcd	mcd
Viewing Angle	140°	degrees
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SM1206GC are grouped based on strict alignment with the following critical parameters:

Primary Compatibility Criteria:

Package / Case: 1206 (3216 Metric)
Mounting Type: Surface Mount
Color: Green
Lens Transparency: Clear
Size / Dimension: 3.20mm L x 1.60mm W
RoHS Status: ROHS3 Compliant

Secondary Electrical Parameters:

Voltage - Forward (Vf) (Typ): 2.1V ± tolerance range
Current - Test: 20mA
Wavelength - Dominant: 565nm ± acceptable range

Substitute parts are classified into two categories based on electrical parameter alignment:

Category A - Direct Electrical Match (Vf 2.1V - 2.2V, Wavelength 565nm - 569nm): Parts with forward voltage and wavelength specifications closely aligned to the SM1206GC, suitable for direct replacement in applications where brightness and viewing angle variations are acceptable within design margins.

Category B - Alternative Electrical Specifications (Vf 3.2V - 3.3V, Wavelength 525nm): Parts with significantly different forward voltage and wavelength characteristics. These require circuit design verification and are suitable only when application specifications explicitly permit higher forward voltage operation and alternative green wavelength emission.

Parameter Comparison

Parameter	SM1206GC (Bivar)	LTST-C150GKT (Lite-On)	SML-LX1206GC-TR1 (Lumex)	LTST-C150TGKT (Lite-On)	APT3216ZGC (Kingbright)	150120GS75000 (Würth)
Manufacturer	Bivar Inc.	Lite-On Inc.	Lumex Opto/Components Inc.	Lite-On Inc.	Kingbright	Würth Elektronik
Package / Case	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)
Packaging	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Color	Green	Green	Green	Green	Green	Green
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear
Size / Dimension	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W	3.20mm L x 1.60mm W
Height (Max)	1.10mm	1.10mm	1.23mm	1.10mm	0.75mm	0.78mm
Voltage - Forward (Vf) (Typ)	2.1V	2.1V	2.2V	3.2V	3.3V	3.2V
Current - Test	20mA	10mA	20mA	20mA	20mA	20mA
Wavelength - Dominant	565nm	569nm	-	525nm	525nm	525nm
Wavelength - Peak	568nm	565nm	565nm	530nm	515nm	515nm
Millicandela Rating	15mcd	6mcd	10mcd	260.5mcd	400mcd	450mcd
Viewing Angle	140°	130°	125°	130°	120°	140°
Lens Size	2.00mm x 1.60mm	2.06mm x 1.60mm	2.00mm x 1.60mm	2.06mm x 1.60mm	2.00mm x 1.60mm	2.00mm x 1.60mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	4 (72 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement Candidates (Category A - Vf 2.1V - 2.2V):

LTST-C150GKT (Lite-On Inc.) operates at 2.1V forward voltage with 569nm dominant wavelength, matching the SM1206GC electrical specification. This part is available in Cut Tape & Digi-Reel® packaging with 65,200 units in stock. The test current specification differs at 10mA versus the SM1206GC 20mA rating. MSL 3 rating provides superior moisture protection compared to SM1206GC MSL 4. ROHS3 compliance and REACH unaffected status are confirmed.

SML-LX1206GC-TR1 (Lumex Opto/Components Inc.) operates at 2.2V forward voltage with 565nm peak wavelength, closely aligned to SM1206GC specifications. Available in Tape & Reel packaging with 10,803 units in stock. Height specification of 1.23mm exceeds SM1206GC maximum of 1.10mm. MSL 3 rating and ROHS3 compliance are confirmed. REACH unaffected status is documented.

Alternative Specification Parts (Category B - Vf 3.2V - 3.3V):

LTST-C150TGKT (Lite-On Inc.) operates at 3.2V forward voltage with 525nm dominant wavelength. This part requires circuit design modification to accommodate higher forward voltage. Available in Tape & Reel packaging with 406,030 units in stock. Brightness output of 260.5mcd significantly exceeds SM1206GC 15mcd rating. MSL 3 rating and ROHS3 compliance are confirmed.

APT3216ZGC (Kingbright) operates at 3.3V forward voltage with 525nm dominant wavelength. Requires circuit design modification for higher forward voltage operation. Available in Tape & Reel packaging with 26,100 units in stock. Brightness output of 400mcd substantially exceeds SM1206GC specification. Height of 0.75mm is lower than SM1206GC. MSL 3 rating and ROHS3 compliance are confirmed.

150120GS75000 (Würth Elektronik) operates at 3.2V forward voltage with 525nm dominant wavelength. Requires circuit design modification for higher forward voltage operation. Available in Cut Tape & Digi-Reel® packaging with 1,493 units in stock. Brightness output of 450mcd substantially exceeds SM1206GC specification. Height of 0.78mm is lower than SM1206GC. MSL 3 rating, ROHS3 compliance, and REACH unaffected status are confirmed.

All substitute parts maintain ROHS3 compliance and active product status. Selection between Category A and Category B parts depends on circuit design specifications and forward voltage tolerance requirements.

Frequently Asked Questions (FAQ)

Q: Can LTST-C150GKT be used as a direct replacement for SM1206GC?

A: LTST-C150GKT operates at the same 2.1V forward voltage as SM1206GC with closely matched wavelength specifications (569nm dominant versus 565nm). Both parts use identical 1206 (3216 Metric) package dimensions and surface mount configuration. The primary difference is test current specification: LTST-C150GKT is rated at 10mA while SM1206GC is rated at 20mA. Direct replacement is possible when circuit design accommodates the 10mA test current specification. Packaging format differs: LTST-C150GKT is supplied in Cut Tape & Digi-Reel® while SM1206GC is Tape & Reel.

Q: What are the implications of using LTST-C150TGKT or APT3216ZGC as substitutes?

A: Both LTST-C150TGKT and APT3216ZGC operate at significantly higher forward voltages (3.2V and 3.3V respectively) compared to SM1206GC (2.1V). These parts are not direct replacements and require circuit design modification to accommodate the higher forward voltage. The brightness output is substantially higher (260.5mcd and 400mcd respectively versus 15mcd), which may affect visual indication intensity in the application. These parts are suitable only when application specifications explicitly permit higher forward voltage operation and alternative green wavelength emission at 525nm.

Q: How do package and height specifications affect substitution?

A: All substitute parts maintain the 1206 (3216 Metric) package footprint with identical 3.20mm length and 1.60mm width dimensions, ensuring PCB layout compatibility. Height specifications vary: SM1206GC, LTST-C150GKT, and SML-LX1206GC-TR1 are rated at 1.10mm, 1.10mm, and 1.23mm respectively. APT3216ZGC and 150120GS75000 have lower heights of 0.75mm and 0.78mm. Height differences may affect clearance in applications with space constraints or specific mechanical assembly requirements.

Q: What is the significance of MSL ratings in substitution?

A: SM1206GC carries MSL 4 rating (72 hours), while all substitute parts carry MSL 3 rating (168 hours). MSL 3 provides superior moisture protection with extended floor life. For applications requiring extended storage or exposure to humid environments prior to reflow soldering, substitute parts with MSL 3 rating offer improved reliability margins. MSL rating selection depends on supply chain logistics and storage conditions in the manufacturing environment.

Q: Are all substitute parts ROHS3 compliant?

A: All identified substitute parts maintain ROHS3 compliance status, matching the SM1206GC specification. Additionally, all substitute parts except LTST-C150GKT have confirmed REACH unaffected status. Compliance documentation is available for all parts, supporting use in regulated applications requiring environmental and hazardous substance compliance verification.

Q: What packaging format differences exist among substitute parts?

A: SM1206GC is supplied in Tape & Reel (TR) format. Substitute parts are available in two packaging formats: Tape & Reel (TR) - LTST-C150GKT, SML-LX1206GC-TR1, LTST-C150TGKT, and APT3216ZGC; Cut Tape (CT) & Digi-Reel® - LTST-C150GKT and 150120GS75000. Packaging format selection depends on assembly equipment compatibility and minimum order quantity requirements. Cut Tape & Digi-Reel® format provides flexibility for lower volume requirements.

Q: How do wavelength specifications affect visual appearance?

A: SM1206GC emits at 565nm dominant wavelength (568nm peak), producing standard green indication. Substitute parts in Category A (LTST-C150GKT at 569nm dominant, SML-LX1206GC-TR1 at 565nm peak) produce visually similar green emission. Category B parts (LTST-C150TGKT, APT3216ZGC, 150120GS75000 at 525nm dominant) produce yellow-green emission with shorter wavelength characteristics. Visual appearance differences may be perceptible in applications where color consistency is critical for user interface design.

Q: What inventory availability considerations apply to substitution?

A: SM1206GC has 915 units in stock. Substitute parts show varying availability: LTST-C150GKT (65,200 units), SML-LX1206GC-TR1 (10,803 units), LTST-C150TGKT (406,030 units), APT3216ZGC (26,100 units), and 150120GS75000 (1,493 units). Higher inventory availability for certain substitute parts may support extended production runs or rapid fulfillment requirements. Inventory levels should be verified at time of procurement as availability is subject to change.

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