MAN6940 LED 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The MAN6940 is a dual-character red 7-segment LED display module manufactured by onsemi, featuring a 0.56" digit height in an 18-DIP package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The display operates at a maximum forward voltage of 2.5V with a 20mA test current and delivers 2.2mcd brightness at a 635nm wavelength peak.

Substiute Parts

MAN6940

onsemiIn Stock: 976MAN6940 Datasheet

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DC56-11EWA

KingbrightIn Stock: 1256DC56-11EWA Datasheet

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HDSP-523E

Broadcom LimitedIn Stock: 1326HDSP-523E Datasheet

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HDSP-5523

Broadcom LimitedIn Stock: 1552HDSP-5523 Datasheet

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HDSP-K213

Broadcom LimitedIn Stock: 3358HDSP-K213 Datasheet

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LDD-C516RI

Lumex Opto/Components Inc.In Stock: 2764LDD-C516RI Datasheet

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LTD-5260HR

Lite-On Inc.In Stock: 1032LTD-5260HR Datasheet

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LTD-6940HR

Lite-On Inc.In Stock: 2056LTD-6940HR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAN6940 is determined by strict alignment across the following critical parameters:

• Display Configuration: 2-character, 7-segment, common cathode topology
• Physical Form Factor: 0.56" digit height, 18-DIP package footprint
• Electrical Operating Range: Forward voltage tolerance (1.8V to 2.5V), test current (10mA to 20mA)
• Optical Characteristics: Red color spectrum (627nm to 660nm wavelength)
• Mechanical Dimensions: PCB footprint compatibility within 18-DIP (0.600", 15.24mm) standard

All substitute parts listed maintain identical display type, character count, common cathode configuration, and 18-DIP package format. Variations in forward voltage, current draw, brightness output, and wavelength peak are within acceptable engineering tolerances for direct substitution in legacy circuit designs.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment for new production designs. The MAN6940, classified as obsolete, has no ongoing manufacturer support or supply guarantees.

Primary substitutes with closest electrical and optical alignment:

LTD-6940HR (Lite-On Inc.) provides the most direct replacement, matching the 0.56" digit height, 2V forward voltage, 20mA test current, and 635nm wavelength peak. This part carries ROHS3 compliance and active production status with 2,029 units in stock.

DC56-11EWA (Kingbright) and LTD-5260HR (Lite-On Inc.) offer alternative configurations with identical electrical parameters but deliver higher brightness output (8mcd and 2.2mcd respectively) and maintain full ROHS3 compliance.

HDSP-K213 (Broadcom Limited) provides bulk packaging availability with 3,340 units in stock, supporting high-volume production requirements while maintaining 2V forward voltage and 635nm wavelength specifications.

LDD-C516RI (Lumex Opto/Components Inc.) operates at reduced current draw (10mA versus 20mA) with lower forward voltage (1.8V), delivering the highest brightness output (13.3mcd) among all substitutes. This configuration reduces power dissipation to 100mW and supports energy-efficient circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the MAN6940 be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts share identical display topology (2-character, 7-segment, common cathode), physical form factor (0.56" digit height, 18-DIP package), and operate within compatible electrical ranges. Direct pin-for-pin substitution is supported without circuit modification.

Q: What is the primary difference between LTD-6940HR and the original MAN6940?

A: The LTD-6940HR maintains identical specifications (0.56" digit height, 2V forward voltage, 20mA test current, 635nm wavelength) but carries active product status with ROHS3 compliance. The MAN6940 is obsolete with no ongoing manufacturer support.

Q: Why does LDD-C516RI operate at 10mA instead of 20mA?

A: LDD-C516RI is designed for lower-current applications while delivering higher brightness output (13.3mcd). This configuration reduces power dissipation to 100mW and is suitable for battery-powered or energy-constrained designs. Circuit current-limiting resistors must be adjusted accordingly.

Q: Are there digit size variations among the substitutes?

A: LTD-5260HR features a 0.52" digit height, slightly smaller than the MAN6940's 0.56" specification. All other substitutes maintain the 0.56" standard. Verify mechanical clearance requirements in your PCB layout before selecting this alternative.

Q: What packaging options are available?

A: Tube packaging is standard for DC56-11EWA, HDSP-523E, HDSP-5523, and LTD-6940HR. Bulk packaging is available for HDSP-K213 and LDD-C516RI. Packaging selection depends on production volume and handling requirements.

Q: Do all substitutes meet RoHS compliance?

A: All active substitute parts carry ROHS3 compliance certification. The original MAN6940 does not specify RoHS status. For regulated applications requiring RoHS compliance, select from the listed active substitutes.

Q: Which substitute offers the best brightness-to-power ratio?

A: LDD-C516RI delivers 13.3mcd brightness at 100mW power dissipation, providing the highest efficiency among all options. HDSP-523E offers 4mcd at 62.5mW for applications requiring minimal power consumption.