SLR-332VR3F Equivalent & Substitute Parts

Part Overview

The SLR-332VR3F is a red diffused T-1 through-hole LED manufactured by Rohm Semiconductor, designed for discrete indication applications. This part operates at 2V forward voltage with a 10mcd brightness rating and 630nm dominant wavelength. The product is marked as Not For New Designs, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support.

Key Parameters

Parameter	SLR-332VR3F Value
Manufacturer	Rohm Semiconductor
Color	Red
Lens Transparency	Diffused
Lens Style	Round with Domed Top
Lens Size	3.20mm Dia
Voltage - Forward (Vf) Typical	2V
Current - Test	10mA
Millicandela Rating	10mcd
Viewing Angle	85°
Mounting Type	Through Hole
Wavelength - Dominant	630nm
Package / Case	Radial
Supplier Device Package	T-1
Height (Max)	4.60mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SLR-332VR3F is determined by the following critical parameters:

Color & Wavelength: Red indication (620–650nm range acceptable for visual indication applications)
Lens Configuration: Diffused lens with round domed top geometry
Mounting Type: Through-hole radial package
Package Form Factor: T-1 or 3mm equivalent mechanical envelope
Electrical Compatibility: Forward voltage range 1.7V–2.2V; test current 10–20mA
Brightness Range: 2–400mcd (acceptable for indication purposes across different circuit designs)
Viewing Angle: 30–85° (acceptable variation for indication applications)
Compliance: ROHS3 compliant; MSL 1 (Unlimited)

Parts meeting these criteria are functionally equivalent for discrete red LED indication circuits, regardless of manufacturer or minor brightness variations.

Parameter Comparison

Parameter	SLR-332VR3F	1254-10SURD/S530-A3	151031SS06000	3HD-F	3RD-F	3SRD-F	3SRD-S	4300F1LC	HLMP-1301-G00FG	HLMP-1600
Manufacturer	Rohm Semiconductor	Everlight Electronics	Würth Elektronik	Bivar Inc.	Bivar Inc.	Bivar Inc.	Bivar Inc.	Visual Communications Company	Broadcom Limited	Broadcom Limited
Color	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused
Lens Style	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top
Lens Size	3.20mm Dia	3.00mm Dia	3.00mm Dia	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1
Voltage - Forward (Vf) Typical	2V	2V	2.2V	2V	2.1V	1.7V	1.7V	1.8V	1.9V	5V
Current - Test	10mA	20mA	20mA	20mA	20mA	20mA	20mA	2mA	10mA	10mA
Millicandela Rating	10mcd	400mcd	35mcd	30mcd	2mcd	40mcd	40mcd	1.8mcd	8.6mcd	2.1mcd
Viewing Angle	85°	30°	60°	35°	35°	35°	40°	50°	60°	60°
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Wavelength - Dominant	630nm	624nm	640nm	—	—	—	—	—	626nm	626nm
Package / Case	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial
Supplier Device Package	T-1	3mm	3mm Round	T-1	T-1	T-1	T-1	T-1	T-1	T-1
Height (Max)	4.60mm	5.30mm	5.55mm	5.30mm	5.30mm	5.30mm	4.50mm	6.35mm	6.35mm	6.35mm
RoHS Status	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Not For New Designs	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Active Product Status)

The following parts are recommended as direct substitutes for the SLR-332VR3F in maintenance and repair applications:

3HD-F (Bivar Inc.): Matches 2V forward voltage and 10mA test current. Active product status. 30mcd brightness and 35° viewing angle provide suitable indication performance. ROHS3 compliant.
151031SS06000 (Würth Elektronik): 2.2V forward voltage with 35mcd brightness. Active product status. Slightly elevated forward voltage requires circuit verification. ROHS3 compliant.
3SRD-F and 3SRD-S (Bivar Inc.): Both operate at 1.7V forward voltage with 40mcd brightness. Active product status. Lower forward voltage reduces power dissipation. ROHS3 compliant. 3SRD-S offers reduced height (4.50mm) for space-constrained applications.
HLMP-1301-G00FG (Broadcom Limited): 1.9V forward voltage, 8.6mcd brightness, 10mA test current. Active product status. Closest electrical match to original part. ROHS3 compliant.
HLMP-1600 (Broadcom Limited): 5V forward voltage with 2.1mcd brightness. Active product status. Suitable only for circuits designed for 5V LED operation. ROHS3 compliant.

Secondary Substitutes (Legacy Product Status)

4300F1LC (Visual Communications Company - VCC): Not For New Designs status. 1.8V forward voltage, 1.8mcd brightness, 2mA test current. Acceptable for legacy system maintenance only.

Brightness Consideration

1254-10SURD/S530-A3 (Everlight Electronics): 400mcd brightness significantly exceeds original specification. Suitable only for applications requiring enhanced visibility. Requires circuit current-limiting verification.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different forward voltage in my circuit?

A: Forward voltage differences require circuit analysis. The SLR-332VR3F operates at 2V. Substitutes ranging from 1.7V to 5V are available. Lower voltage parts (1.7V–2.2V) typically require minimal circuit modification. The 5V HLMP-1600 is suitable only for circuits designed for 5V LED operation. Verify series resistor values and power supply compatibility.

Q: What is the impact of brightness (millicandela) differences?

A: The SLR-332VR3F provides 10mcd brightness. Substitute parts range from 1.8mcd to 400mcd. Lower brightness (1.8–8.6mcd) reduces power consumption and is suitable for indicator applications where visibility is not critical. Higher brightness (30–400mcd) increases visibility but requires higher current and power dissipation. Select based on application requirements.

Q: Are all substitute parts mechanically compatible?

A: All listed substitutes use through-hole radial mounting with T-1 or 3mm package form factors. Height variations range from 4.50mm to 6.35mm. Verify PCB clearance for applications with height constraints. The 3SRD-S offers the lowest profile at 4.50mm.

Q: What is the difference between Active and Not For New Designs product status?

A: Active products are currently manufactured and supported by the supplier. Not For New Designs products (SLR-332VR3F, 4300F1LC) are legacy parts suitable for maintenance and repair of existing systems but not recommended for new circuit designs. For new designs, select from Active status alternatives.

Q: Do all substitute parts meet RoHS3 compliance?

A: All listed substitutes are ROHS3 compliant. The SLR-332VR3F is also ROHS3 compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.

Q: Which substitute offers the closest electrical match?

A: The HLMP-1301-G00FG provides the closest electrical match with 1.9V forward voltage and 10mA test current, differing only 0.1V from the original 2V specification. The 3HD-F matches both 2V forward voltage and 10mA test current exactly.

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