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MV57640 Equivalent & Substitute Parts
Part Overview
The MV57640 is a red diffused T-1 through-hole LED manufactured by onsemi, designed for discrete LED indication applications. It features a 2V forward voltage, 10mA test current, and 2mcd brightness rating with a 90° viewing angle. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | MV57640 Value |
|---|---|
| Manufacturer | onsemi |
| Color | Red |
| Lens Transparency | Diffused |
| Lens Size | 3mm, T-1 |
| Voltage - Forward (Vf) (Typ) | 2V |
| Current - Test | 10mA |
| Viewing Angle | 90° |
| Mounting Type | Through Hole |
| Wavelength - Peak | 635nm |
| Package / Case | Radial |
| Supplier Device Package | T-1 |
| Height (Max) | 6.30mm |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the MV57640 is determined by the following critical parameters:
- Color and Lens Transparency: Red diffused lens required for visual indication compatibility
- Mounting Type: Through-hole radial configuration for PCB assembly compatibility
- Lens Size: 3mm T-1 package for mechanical fit in existing designs
- Voltage - Forward (Vf): 2V nominal operating voltage for circuit compatibility
- Current - Test: 10mA test current for electrical performance matching
- Viewing Angle: 90° wide-angle viewing for visibility requirements
- Wavelength - Peak: 635nm red spectrum for color consistency
Substitute parts are grouped based on adherence to these parameters. Parts with identical or closely matched electrical characteristics and mechanical dimensions are considered direct substitutes. Variations in brightness (millicandela rating) and minor wavelength differences are acceptable within the red LED spectrum, provided the core parameters remain compatible.
Parameter Comparison
| Parameter | MV57640 | 3SRD-S | LTL-1CHE | LTL-4211 | LTL-4211N | SLR-332VR3F | SLR-343VR3F |
|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Bivar Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Rohm Semiconductor | Rohm Semiconductor |
| Color | Red | Red | Red | Red | Red | Red | Red |
| Lens Transparency | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused |
| Lens Size | 3mm, T-1 | 3mm, T-1 | 3.10mm Dia | 3mm, T-1 | 3mm, T-1 | 3.20mm Dia | 3.10mm Dia |
| Voltage - Forward (Vf) (Typ) | 2V | 1.7V | 2V | 2.1V | 2.1V | 2V | 2V |
| Current - Test | 10mA | 20mA | 20mA | 10mA | 10mA | 10mA | 10mA |
| Viewing Angle | 90° | 40° | 60° | 40° | 60° | 85° | 40° |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Wavelength - Peak | 635nm | 645nm | 635nm | 697nm | 697nm | N/A | N/A |
| Package / Case | Radial | Radial | Radial | Radial | Radial | Radial | Radial |
| Supplier Device Package | T-1 | T-1 | N/A | T-1 | T-1 | T-1 | N/A |
| Height (Max) | 6.30mm | 4.50mm | 5.20mm | 6.55mm | 5.85mm | 4.60mm | 5.60mm |
| Product Status | Obsolete | Active | Active | Active | Active | Not For New Designs | Active |
| RoHS Status | N/A | N/A | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | N/A | REACH Unaffected | REACH Affected | REACH Affected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Primary Substitutes (Active Product Status)
LTL-1CHE and SLR-343VR3F are the preferred substitutes for the MV57640. Both maintain the critical 2V forward voltage and 10mA test current specifications. LTL-1CHE offers ROHS3 compliance and REACH unaffected status with 5.20mm height, closely matching the original 6.30mm dimension. SLR-343VR3F provides ROHS3 compliance and REACH unaffected status with 5.60mm height and active product status, ensuring long-term availability.
Secondary Substitutes (Voltage or Current Variations)
LTL-4211 and LTL-4211N operate at 2.1V forward voltage with 10mA test current, introducing minor voltage deviation. Both are ROHS3 compliant but carry REACH affected status. LTL-4211N is preferred over LTL-4211 due to higher inventory availability (28,025 pcs vs. 12,350 pcs) and improved viewing angle (60° vs. 40°).
Not Recommended for New Designs
SLR-332VR3F carries "Not For New Designs" status and should be avoided for new applications, though it remains available for legacy system maintenance.
Voltage Deviation Consideration
3SRD-S operates at 1.7V forward voltage, representing a 15% reduction from the MV57640 specification. This part also requires 20mA test current and offers only 40° viewing angle, making it suitable only for applications where lower voltage operation is acceptable and circuit design permits increased current draw.
Frequently Asked Questions (FAQ)
Q: Can I use LTL-4211 or LTL-4211N as direct replacements for MV57640?
A: Yes, with circuit verification. Both parts maintain the 10mA test current and 2V nominal forward voltage (2.1V typical). The 0.1V difference is within acceptable tolerance for most LED indication circuits. Verify your current-limiting resistor design accommodates the slightly higher voltage.
Q: What is the difference between LTL-4211 and LTL-4211N?
A: Both parts are electrically identical at 2.1V forward voltage and 10mA test current. LTL-4211N offers superior viewing angle (60° vs. 40°) and significantly higher inventory availability (28,025 pcs vs. 12,350 pcs). LTL-4211N is the preferred choice for new applications.
Q: Why is SLR-332VR3F marked "Not For New Designs"?
A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new designs. While inventory remains available (80,289 pcs), it should be reserved for legacy system maintenance only.
Q: Can I use 3SRD-S as a substitute?
A: 3SRD-S operates at 1.7V forward voltage and requires 20mA test current, both significantly different from MV57640 specifications. Use only if your circuit design explicitly accommodates lower voltage operation and higher current draw. The 40° viewing angle also provides narrower visibility compared to the original 90°.
Q: What compliance certifications should I verify for my application?
A: All active substitute parts (LTL-1CHE, LTL-4211, LTL-4211N, SLR-343VR3F) are ROHS3 compliant. LTL-1CHE and SLR-343VR3F carry REACH unaffected status, while LTL-4211 and LTL-4211N are REACH affected. Verify your application requirements against these certifications before final selection.
Q: Are there mechanical fit concerns when substituting?
A: Height variations exist among substitutes. MV57640 is 6.30mm maximum height. LTL-1CHE (5.20mm), SLR-332VR3F (4.60mm), and LTL-4211N (5.85mm) are shorter, while LTL-4211 (6.55mm) is slightly taller. Verify PCB clearance and mechanical constraints in your design before substitution.
Q: Which substitute offers the best long-term availability?
A: LTL-4211N provides the highest inventory (28,025 pcs) and active product status, ensuring sustained availability. SLR-343VR3F also maintains active status with 4,346 pcs in stock. Both are suitable for applications requiring long-term component sourcing.
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