MV57642 LED RED DIFFUSED T-1 T/H Equivalent & Substitute Parts

Part Overview

The MV57642 is a red diffused LED indicator from onsemi, designed for through-hole mounting in T-1 (3mm) form factor applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance requirements. The MV57642 operates at 2V forward voltage with 4mcd brightness rating and 90° viewing angle, suitable for standard indication applications requiring red LED signaling.

Key Parameters

Parameter	MV57642 Value
Manufacturer	onsemi
Product Status	Obsolete
Color	Red
Lens Transparency	Diffused
Lens Size	3mm, T-1
Voltage - Forward (Vf) Typical	2V
Current - Test	10mA
Millicandela Rating	4mcd
Viewing Angle	90°
Mounting Type	Through Hole
Wavelength - Peak	635nm
Height (Max)	6.30mm
Package / Case	Radial
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MV57642 is determined by strict alignment of the following parameters:

Color: Red (all substitutes must be red)
Lens Transparency: Diffused (optical diffusion characteristic must match)
Lens Size & Form Factor: 3mm, T-1 through-hole configuration
Mounting Type: Through Hole radial
Voltage - Forward (Vf): 2V nominal operation (acceptable range: 1.7V to 2.2V for circuit compatibility)
Current - Test: 10mA to 20mA operating range
Wavelength - Peak: 630nm to 645nm (red spectrum)
Package / Case: Radial configuration

Substitute parts are grouped by active product status and compliance certifications. Parts with identical base specifications but different packaging options (Bulk vs. Cut Tape) are considered direct substitutes. Variations in millicandela rating, viewing angle, and height are acceptable provided the core electrical and mechanical parameters remain within specified tolerances.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Wavelength - Peak	Height (Max)	Packaging	RoHS Status
MV57642	onsemi	Obsolete	2V	10mA	4mcd	90°	635nm	6.30mm	Radial	Not Specified
3SRD-S	Bivar Inc.	Active	1.7V	20mA	40mcd	40°	645nm	4.50mm	Bulk	Not Specified
HLMP-1301	Broadcom Limited	Active	1.9V	10mA	3.4mcd	60°	635nm	6.35mm	Bulk	ROHS3 Compliant
HLMP-1301-E0002	Broadcom Limited	Active	1.9V	10mA	3.4mcd	60°	635nm	6.35mm	Cut Tape (CT)	ROHS3 Compliant
HLMP-1301-G0000	Broadcom Limited	Active	1.9V	10mA	8.6mcd	60°	635nm	6.35mm	Bulk	ROHS3 Compliant
LTL-1CHE	Lite-On Inc.	Active	2V	20mA	12.6mcd	60°	635nm	5.20mm	Bulk	ROHS3 Compliant
LTL-4221	Lite-On Inc.	Active	2V	20mA	8.7mcd	40°	635nm	6.55mm	Bulk	ROHS3 Compliant
LTL-4291	Lite-On Inc.	Active	2V	20mA	12.6mcd	40°	630nm	6.55mm	Bulk	ROHS3 Compliant
SLI-343U8R3F	Rohm Semiconductor	Active	2.2V	20mA	220mcd	40°	Not Specified	5.60mm	Bulk	ROHS3 Compliant
SLI-343U8RC3F	Rohm Semiconductor	Active	2.2V	20mA	330mcd	40°	Not Specified	5.60mm	Bulk	ROHS3 Compliant
SLI-343V8R3F	Rohm Semiconductor	Active	2.2V	20mA	330mcd	40°	Not Specified	5.40mm	Bulk	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are active production components with ROHS3 compliance certification, ensuring regulatory alignment for new designs and ongoing production. The MV57642 is obsolete and no longer manufactured; substitution is mandatory for procurement.

Primary substitutes with closest electrical match:

LTL-4221 and LTL-1CHE from Lite-On Inc. provide exact 2V forward voltage matching and maintain the 635nm peak wavelength specification. Both are ROHS3 compliant and available in bulk packaging. LTL-4221 offers 8.7mcd brightness with 40° viewing angle, while LTL-1CHE provides 12.6mcd with 60° viewing angle.

HLMP-1301 series from Broadcom Limited operates at 1.9V forward voltage with 3.4mcd brightness, closely matching the MV57642 brightness profile. Available in both bulk and cut tape packaging with ROHS3 compliance. HLMP-1301-G0000 variant provides 8.6mcd brightness for applications requiring higher luminous intensity.

Alternative substitutes with acceptable parameter variance:

3SRD-S from Bivar Inc. operates at 1.7V forward voltage with significantly higher 40mcd brightness rating. Suitable for applications where increased brightness is acceptable and circuit design accommodates lower forward voltage.

Rohm Semiconductor EXCELED™ series (SLI-343U8R3F, SLI-343U8RC3F, SLI-343V8R3F) operate at 2.2V forward voltage with substantially higher brightness ratings (220mcd to 330mcd). These parts are suitable for applications requiring enhanced luminous intensity, provided circuit design accommodates the higher forward voltage specification.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with different forward voltage than the MV57642?

A: Forward voltage variations within the 1.7V to 2.2V range are acceptable for most circuit designs. However, verify that your circuit design accommodates the specific forward voltage of the selected substitute. Parts operating at 1.7V (3SRD-S) or 2.2V (Rohm EXCELED™ series) may require circuit adjustment compared to the original 2V specification.

Q: What is the difference between HLMP-1301, HLMP-1301-E0002, and HLMP-1301-G0000?

A: These are variants of the same base part (HLMP-1301) with differences in packaging and brightness rating. HLMP-1301 and HLMP-1301-G0000 are supplied in bulk packaging; HLMP-1301-E0002 is supplied in cut tape format. HLMP-1301-G0000 provides 8.6mcd brightness compared to 3.4mcd in the standard HLMP-1301. All three share identical electrical specifications (1.9V, 10mA test current, 60° viewing angle, 635nm wavelength).

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original MV57642 does not specify RoHS status due to its obsolete classification.

Q: What is the impact of different millicandela ratings on circuit design?

A: Millicandela rating determines luminous intensity. Higher mcd ratings (such as Rohm EXCELED™ series at 220mcd to 330mcd) produce brighter indication without circuit modification, provided forward voltage and current specifications are accommodated. Lower mcd ratings require no circuit changes but produce dimmer indication.

Q: Can I substitute a part with different viewing angle?

A: Viewing angle affects the cone of light distribution. The MV57642 specifies 90° viewing angle. Substitutes with narrower viewing angles (40° to 60°) concentrate light in a tighter cone, suitable for applications where directional indication is preferred. Wider viewing angles provide broader light distribution. Select based on application requirements for light distribution pattern.

Q: What packaging options are available?

A: Substitute parts are available in bulk packaging (standard for production quantities) or cut tape format (HLMP-1301-E0002). Bulk packaging is suitable for high-volume assembly; cut tape format accommodates automated pick-and-place equipment. Select based on assembly process requirements.

Q: Is the T-1 form factor consistent across all substitutes?

A: All substitute parts maintain the 3mm T-1 through-hole radial form factor, ensuring mechanical compatibility with existing PCB designs. Height variations (4.50mm to 6.55mm) are within acceptable tolerance for standard through-hole mounting.

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