MV7743 LED Orange Clear T-1 T/H Equivalent & Substitute Parts

Part Overview

The MV7743 is an orange LED indication component manufactured by onsemi, featuring a 3mm T-1 through-hole radial package with a clear domed lens. This discrete 2.1V LED operates at 20mA test current and delivers 240mcd brightness with a 60° viewing angle. The component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

MV7743

onsemiIn Stock: 832MV7743 Datasheet

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OVLBY4C7

TT Electronics/Optek TechnologyIn Stock: 31311OVLBY4C7 Datasheet

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WP710A10SECK/J4

KingbrightIn Stock: 5466WP710A10SECK/J4 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MV7743 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Lens size: 3mm, T-1 form factor
• Mounting type: Through hole radial configuration
• Lens style: Round with domed top
• Lens transparency: Clear
• Color: Orange (primary) or functionally equivalent indication colors
• Voltage - Forward (Vf): Within acceptable operating range (±0.2V tolerance typical for LED applications)
• Current - Test: 20mA standard test condition
• Package / Case: Radial

Substitution Logic: The WP710A10SECK/J4 (Kingbright) qualifies as a direct substitute for the MV7743, sharing identical lens geometry, mounting configuration, and operating current. Both components are orange LEDs with clear domed lenses in T-1 3mm packages. The OVLBY4C7 (TT Electronics/Optek Technology) represents a functional alternative with the same physical form factor and mounting type, though it operates as a yellow LED with different spectral characteristics.

Parameter Comparison

Engineering Selection Recommendations

WP710A10SECK/J4 (Kingbright) - Recommended Primary Substitute: The WP710A10SECK/J4 is the optimal substitute for the obsolete MV7743. Both components share identical color (orange), lens geometry (3mm T-1 clear domed), mounting configuration (through-hole radial), and test current (20mA). Forward voltage differs by 0.1V (2.2V vs. 2.1V), which is within standard LED operating tolerances. The WP710A10SECK/J4 is actively manufactured and carries RoHS3 compliance certification, ensuring long-term availability and regulatory alignment. The higher brightness rating (3000mcd vs. 240mcd) and narrower viewing angle (34° vs. 60°) represent performance enhancements suitable for most indication applications.

OVLBY4C7 (TT Electronics/Optek Technology) - Functional Alternative: The OVLBY4C7 provides a functionally compatible alternative when yellow indication is acceptable in place of orange. This component maintains the same 3mm T-1 through-hole radial package, clear domed lens, and 20mA test current. Forward voltage (2V) is within acceptable tolerance. The OVLBY4C7 is actively manufactured with RoHS3 compliance. The significantly higher brightness (3700mcd) and different viewing angle (45°) require circuit-level evaluation for suitability in the target application.

Both substitute parts are actively produced, carry REACH Unaffected and MSL 1 (Unlimited) ratings matching the original component, and are available in bulk packaging for production deployment.

Frequently Asked Questions (FAQ)

Q: Can the WP710A10SECK/J4 directly replace the MV7743 without circuit modifications? A: The WP710A10SECK/J4 is mechanically and electrically compatible with the MV7743 for standard indication applications. Both components operate at 20mA test current with forward voltages within 0.1V of each other (2.2V vs. 2.1V). No circuit modifications are required for typical LED indication circuits. However, applications with tight voltage tolerance requirements should verify forward voltage specifications against actual circuit design parameters.

Q: What is the significance of the different millicandela ratings between the MV7743 and its substitutes? A: The MV7743 operates at 240mcd, while the WP710A10SECK/J4 delivers 3000mcd and the OVLBY4C7 delivers 3700mcd. Higher brightness ratings indicate greater light output intensity. For indication applications where the original 240mcd brightness is sufficient, the higher-brightness substitutes will provide enhanced visibility. Applications with brightness-sensitive designs (such as those with optical filters or specific viewing distance requirements) should evaluate whether increased brightness affects performance or causes unintended effects.

Q: Why do the substitute parts have different viewing angles than the MV7743? A: The MV7743 features a 60° viewing angle, while the WP710A10SECK/J4 provides 34° and the OVLBY4C7 provides 45°. Viewing angle defines the cone of light emission from the LED. Narrower viewing angles concentrate light intensity in a specific direction, while wider angles distribute light across a broader field. Circuit placement and visibility requirements determine whether the narrower angles of the substitutes are acceptable. Applications requiring wide-angle visibility should verify that the substitute's viewing angle meets design specifications.

Q: Is the OVLBY4C7 suitable as a substitute if the application requires orange indication? A: The OVLBY4C7 is a yellow LED (589nm dominant wavelength) rather than orange. While both are in the warm color spectrum, they produce visually distinct colors. The OVLBY4C7 is suitable only if the application can accommodate yellow indication or if color distinction is not critical to system function. For applications requiring orange indication specifically, the WP710A10SECK/J4 is the appropriate choice.

Q: Are there any compliance or regulatory differences between the MV7743 and its substitutes? A: All three components carry identical REACH Unaffected and MSL 1 (Unlimited) ratings. The WP710A10SECK/J4 and OVLBY4C7 both carry RoHS3 compliance certification, while the obsolete MV7743 does not list RoHS status. For applications subject to RoHS regulations, the active substitutes provide regulatory alignment and long-term compliance assurance.

Q: What are the physical dimension differences, and do they affect PCB layout? A: The MV7743 has a maximum height of 6.30mm, while the WP710A10SECK/J4 measures 5.90mm and the OVLBY4C7 measures 5.35mm. All three components use identical 3mm T-1 lens diameters and radial through-hole mounting. The height differences are minor and typically do not affect PCB layout for standard indication applications. However, applications with tight vertical clearance constraints should verify that the substitute's height is compatible with enclosure or assembly requirements.

Q: What is the inventory status of these substitute parts? A: The MV7743 is obsolete with 768 pieces in stock. The WP710A10SECK/J4 is actively manufactured with 5,441 pieces available. The OVLBY4C7 is actively manufactured with 31,212 pieces available. For production continuity, the active substitutes provide reliable long-term supply assurance compared to the obsolete original component.