3SURC-F

Part Overview

The 3SURC-F is a red LED indication component manufactured by Bivar Inc., designed for through-hole mounting applications. This T-1 form factor LED operates at 1.8V forward voltage with a 200mcd brightness rating and 640nm peak wavelength, delivering 20° viewing angle performance in a 3mm clear lens configuration. The component maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Alternative equivalent parts are identified to address inventory availability, performance specifications, packaging formats, and application-specific requirements such as brightness variations, voltage tolerance ranges, and viewing angle considerations.

Key Parameters

Parameter	Specification
Manufacturer Part Number	3SURC-F
Manufacturer	Bivar Inc.
Color	Red
Lens Size	3mm, T-1
Lens Style	Round with Domed Top
Lens Transparency	Clear
Voltage - Forward (Vf) (Typ)	1.8V
Current - Test	20mA
Millicandela Rating	200mcd
Wavelength - Peak	640nm
Viewing Angle	20°
Mounting Type	Through Hole
Height (Max)	5.30mm
Package / Case	Radial
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are organized based on strict alignment with the following key parameters that determine functional equivalence:

Critical Match Parameters:

Color: Red
Mounting Type: Through Hole
Package / Case: Radial
Lens Style: Round with Domed Top
Configuration: Standard

Operating Parameters (Flexible Ranges):

Voltage - Forward (Vf) (Typ): Range 1.7V to 2.05V
Current - Test: Range 1mA to 20mA
Millicandela Rating: 3mcd to 680mcd
Wavelength - Peak: Range 632nm to 660nm
Viewing Angle: Range 20° to 45°
Lens Size: 3mm form factor with minor diameter variations (3.0mm to 3.1mm acceptable)

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Product Status: Active

Substitutes meeting these criteria are suitable for replacement in applications where the primary functional requirement is red LED indication with compatible electrical operating points and physical form factors.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Color	Lens Size	Lens Transparency	Vf (Typ)	Current - Test	Millicandela Rating	Wavelength - Peak	Viewing Angle	Height (Max)	Mounting Type	Product Status	RoHS Status	Packaging
3SURC-F	Bivar Inc.	Red	3mm, T-1	Clear	1.8V	20mA	200mcd	640nm	20°	5.30mm	Through Hole	Active	ROHS3 Compliant	Bulk
151031SS04000	Würth Elektronik	Red	3.00mm Dia	Diffused	2V	20mA	160mcd	640nm	40°	5.55mm	Through Hole	Active	ROHS3 Compliant	Bulk
HLMP-K105	Broadcom Limited	Red	3mm, T-1	Clear	1.8V	20mA	65mcd	645nm	45°	6.35mm	Through Hole	Active	ROHS3 Compliant	Bulk
HLMP-K105-J0002	Broadcom Limited	Red	3mm, T-1	Clear	1.8V	20mA	65mcd	645nm	45°	6.35mm	Through Hole	Active	ROHS3 Compliant	Cut Tape (CT)
HLMP-K155	Broadcom Limited	Red	3mm, T-1	Clear	1.7V	1mA	3mcd	660nm	45°	6.35mm	Through Hole	Active	ROHS3 Compliant	Bulk
HLMP-Y601-J0000	Broadcom Limited	Red	3mm, T-1	Clear	2V	20mA	680mcd	633nm	45°	5.20mm	Through Hole	Active	ROHS3 Compliant	Bulk
HLMP-Y651-G0000	Broadcom Limited	Red	3mm, T-1	Clear	2V	20mA	300mcd	652nm	45°	5.20mm	Through Hole	Active	ROHS3 Compliant	Bulk
LTL1CHKEKNN	Lite-On Inc.	Red	3.10mm Dia	Clear	2.05V	20mA	680mcd	632nm	45°	5.20mm	Through Hole	Active	ROHS3 Compliant	Bulk
LTL1CHKRKNN	Lite-On Inc.	Red	3.10mm Dia	Clear	2V	20mA	400mcd	639nm	45°	5.20mm	Through Hole	Active	ROHS3 Compliant	Bulk
SLR-343VC3F	Rohm Semiconductor	Red	3.10mm Dia	Clear	2V	10mA	25mcd	-	40°	5.60mm	Through Hole	Active	ROHS3 Compliant	Bulk

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard through-hole PCB assembly and compliance frameworks.

For Direct Voltage Compatibility (1.8V Operation): HLMP-K105 and HLMP-K105-J0002 operate at identical 1.8V forward voltage. The -J0002 variant offers Cut Tape packaging for automated pick-and-place assembly with 20,739 units in stock versus 2,300 units for bulk HLMP-K105.

For Brightness Matching (200mcd Target): HLMP-Y601-J0000 (680mcd, 2V) and HLMP-Y651-G0000 (300mcd, 2V) provide higher luminous intensity at 2V operation. HLMP-Y651-G0000 delivers 300mcd at 5.20mm height, more closely matched to the original 200mcd specification.

For Low Current Applications: HLMP-K155 operates at 1mA test current versus 20mA standard, providing reduced power consumption for indicator-only applications where brightness requirements are minimal (3mcd rating).

For High Brightness Requirements: LTL1CHKEKNN and LTL1CHKRKNN from Lite-On supply 680mcd and 400mcd respectively at 2V, with 3.10mm lens diameter and compact 5.20mm height profiles offering enhanced visibility in high-ambient-light environments.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 3SURC-F with a different forward voltage part? A: Yes. Parts operating between 1.7V to 2.05V are functionally equivalent within the red LED indication category. The 3SURC-F operates at 1.8V; HLMP-K155 at 1.7V provides closest voltage match, while HLMP-Y601-J0000, HLMP-Y651-G0000, and Lite-On variants at 2V require circuit recalculation for current-limiting resistors to achieve design specifications.

Q: What is the difference between clear and diffused lens options? A: The primary 3SURC-F uses a clear lens with 20° viewing angle. The Würth 151031SS04000 features a diffused lens with 40° viewing angle, distributing light output over a broader field at reduced peak intensity. Diffused variants are substitutable only where wider viewing angles are acceptable.

Q: Does packaging type affect electrical performance? A: No. HLMP-K105-J0002 in Cut Tape (CT) packaging and HLMP-K105 in Bulk packaging are electrically identical with matching 1.8V, 65mcd, and 645nm specifications. Packaging selection depends on assembly process (automated versus manual placement) and order quantities.

Q: Are there brightness level categories among these substitutes? A: Yes. Parts group into brightness tiers: Low (3mcd–65mcd): HLMP-K155, HLMP-K105; Medium (160mcd–300mcd): 3SURC-F, 151031SS04000, HLMP-Y651-G0000; High (400mcd–680mcd): HLMP-Y601-J0000, LTL1CHKEKNN, LTL1CHKRKNN. Select tier based on application visibility requirements.

Q: Which parts are cross-compatible in terms of physical form factor? A: All parts maintain 3mm T-1 or 3.1mm diameter form factors with round domed-top lens styles and through-hole radial mounting. Height variations range from 5.20mm to 6.35mm; verify PCB clearance requirements for critical applications. The 3SURC-F at 5.30mm height is functionally compatible with all listed substitutes.

Q: Can I use these parts interchangeably without circuit modification? A: Parts with matching forward voltage (1.7V–1.8V) require no circuit changes. Parts at 2V forward voltage may require resistor recalculation if the 3SURC-F was selected for 1.8V operation with specific current-limiting design values. Current rating (20mA standard; 1mA or 10mA alternatives) also determines brightness output within the same voltage class.

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