3SUGC Equivalent & Substitute Parts

Part Overview

The Bivar Inc. 3SUGC is a green LED indication component featuring a T-1 form factor with discrete 2.1V forward voltage characteristics and through-hole radial mounting. The device delivers 300mcd brightness at 20mA test current with a 30° viewing angle and 570nm peak wavelength emission. The 3SUGC is classified as Obsolete, necessitating identification of functionally equivalent active alternatives that maintain compatibility with existing circuit designs while offering availability advantages and modern compliance certifications.

Key Parameters

Parameter	Value	Unit
Color	Green	-
Lens Size	3mm, T-1	-
Lens Style	Round with Domed Top	-
Lens Transparency	Clear	-
Voltage - Forward (Vf) (Typ)	2.1V	V
Current - Test	20mA	mA
Millicandela Rating	300mcd	mcd
Wavelength - Peak	570nm	nm
Viewing Angle	30°	degrees
Mounting Type	Through Hole	-
Package / Case	Radial	-
Height (Max)	4.50mm	mm
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution compatibility for the 3SUGC is determined by the following critical parameters: color (Green), lens size (3mm T-1), lens transparency (Clear), forward voltage (2.1V nominal), test current (20mA), mounting type (Through Hole radial), and form factor consistency. The millicandela rating and viewing angle are secondary parameters that affect application suitability but do not prevent substitution when within acceptable circuit design tolerances. Peak wavelength and dominant wavelength specifications must remain within the green spectrum range (565-575nm) to maintain visual consistency with the original design intent.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Size	Lens Transparency	Vf (Typ)	Current - Test	Millicandela Rating	Viewing Angle	Wavelength - Peak	Height (Max)	Product Status
3SUGC	Bivar Inc.	Green	3mm, T-1	Clear	2.1V	20mA	300mcd	30°	570nm	4.50mm	Obsolete
HLMP-Y801-JPP00	Broadcom Limited	Green	3mm, T-1	Clear	2.1V	20mA	310mcd	30°	575nm	5.20mm	Active
LTL-4236N	Lite-On Inc.	Green	3mm, T-1	Clear	2.1V	10mA	40mcd	45°	565nm	5.85mm	Active
LTL1CHKGKNN	Lite-On Inc.	Green	3mm, T-1	Clear	2.05V	20mA	320mcd	45°	575nm	5.20mm	Active
MV7442	Fairchild Semiconductor	Green	3mm, T-1	Clear	2.1V	20mA	120mcd	45°	565nm	6.30mm	Active
151031VS04000	Würth Elektronik	Green	3.00mm Dia	Diffused	2.1V	20mA	120mcd	40°	573nm	5.55mm	Active
SLR-343MC3F	Rohm Semiconductor	Green	3.10mm Dia	Clear	2.1V	10mA	25mcd	40°	572nm	5.60mm	Not For New Designs
SLR-343PC3F	Rohm Semiconductor	Green	3.10mm Dia	Clear	2.1V	10mA	6.3mcd	40°	-	5.60mm	Last Time Buy
1224SYGC/S530-E2	Everlight Electronics Co Ltd	Yellow-Green	3.00mm Dia	Clear	2V	20mA	100mcd	25°	575nm	5.50mm	Active
264-7SYGC/S530-E2	Everlight Electronics Co Ltd	Yellow-Green	2.90mm Dia	Clear	2V	20mA	100mcd	40°	575nm	6.30mm	Active

Engineering Selection Recommendations

Primary Recommendation: HLMP-Y801-JPP00 (Broadcom Limited) represents the optimal substitute, providing identical lens size (3mm T-1), clear lens transparency, matched forward voltage (2.1V), test current (20mA), and viewing angle (30°). The 310mcd brightness rating exceeds the original specification, with peak wavelength of 575nm remaining within acceptable green spectrum tolerance. Product status is Active with full RoHS3 compliance and REACH unaffected certification.

Secondary Recommendations: LTL1CHKGKNN (Lite-On Inc.) offers 320mcd brightness at matched forward voltage (2.05V nominal) and 20mA test current, with Active status and full compliance certifications. MV7442 (Fairchild Semiconductor) provides Active status and RoHS3 compliance with identical electrical specifications and 45° viewing angle for expanded field of view applications.

Alternative Consideration: 151031VS04000 (Würth Elektronik) delivers Active status with ROHS3 compliance, though diffused lens transparency diverges from the original clear lens characteristic. This substitution is appropriate only when optical diffusion is acceptable within the circuit design.

Not Recommended: SLR-343MC3F and SLR-343PC3F carry "Not For New Designs" and "Last Time Buy" status respectively, indicating these parts are transitioning obsolescence. LTL-4236N operates at reduced 10mA test current and significantly lower 40mcd brightness, suitable only for applications with reduced luminous intensity requirements. Everlight Yellow-Green variants (1224SYGC/S530-E2 and 264-7SYGC/S530-E2) differ in color spectrum and are not direct replacements for pure green indication requirements.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-Y801-JPP00 be used as a direct drop-in replacement for the 3SUGC?

A: Yes. Both components share identical lens size (3mm T-1), forward voltage (2.1V), test current (20mA), and viewing angle (30°). The HLMP-Y801-JPP00 requires no circuit modifications and will function in existing 3SUGC applications without design changes.

Q: What is the significance of millicandela rating differences between the 3SUGC (300mcd) and available substitutes?

A: The millicandela rating determines LED brightness at specified test current. Substitutes with higher ratings (HLMP-Y801-JPP00 at 310mcd, LTL1CHKGKNN at 320mcd) provide increased luminous intensity. Substitutes with lower ratings (MV7442, 151031VS04000 at 120mcd) reduce brightness. Selection depends on whether the circuit design requires exact brightness or permits brightness variation within application tolerance.

Q: Why are the Everlight Yellow-Green LEDs (1224SYGC/S530-E2 and 264-7SYGC/S530-E2) listed as substitutes despite color differences?

A: These parts share mechanical compatibility (3mm through-hole mounting, clear lens, radial package), forward voltage (2V), and test current (20mA) parameters. However, yellow-green wavelength (573-575nm) differs from pure green (565-570nm), resulting in different visual appearance. These parts function as mechanical and electrical substitutes only if color shift is acceptable.

Q: What mounting constraints apply when selecting a substitute?

A: All listed substitutes feature through-hole radial mounting, maintaining circuit board layout compatibility with the 3SUGC. Height variations (4.50mm to 6.30mm) may affect board clearance in space-constrained applications; verify maximum height limits within your design. Package case specifications remain radial across all substitutes.

Q: Are there compliance or regulatory differences between substitute options?

A: HLMP-Y801-JPP00, LTL1CHKGKNN, MV7442, and 151031VS04000 carry Active product status with RoHS3 compliance and REACH unaffected or ROHS3 compliant certification. SLR-343MC3F and SLR-343PC3F are classified "Not For New Designs" and "Last Time Buy" respectively, indicating regulatory transition status unsuitable for new designs. Select from Active-status parts for new development to ensure long-term compliance support.

Q: How do viewing angle specifications affect substitution decisions?

A: The 3SUGC specifies 30° viewing angle. Substitutes with identical 30° angle (HLMP-Y801-JPP00) maintain identical light distribution patterns. Parts with wider viewing angles (40-45°) distribute light over a broader spatial range, altering visibility from off-axis positions. Select narrower or matching viewing angles to preserve original visual field characteristics.

Q: Does forward voltage variation (2.05V to 2.1V) impact circuit design when substituting?

A: The 0.05V variation between LTL1CHKGKNN (2.05V) and 3SUGC (2.1V) falls within typical LED manufacturing tolerance and does not require circuit redesign in standard current-limiting resistor designs. Verify series resistor calculations account for the specified test voltage, but substitution remains valid within standard engineering practice.

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