LDD-HTC514RI Equivalent & Substitute Parts

Part Overview

The LDD-HTC514RI is a 7-segment LED display module manufactured by Lumex Opto/Components Inc. This dual-character red display operates at 2V forward voltage with a 10mA test current and features a 0.56" digit size in a common cathode configuration. The module is housed in an 18-DIP package measuring 0.748" H × 0.984" W × 0.315" D (19.00mm × 25.00mm × 8.00mm) and is supplied in tube packaging.

The LDD-HTC514RI maintains Active product status and carries ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are necessary when tube packaging is unavailable, alternative packaging formats are required, or when enhanced brightness specifications are needed for specific application requirements.

Substiute Parts

LDD-HTC514RI

Lumex Opto/Components Inc.In Stock: 2117LDD-HTC514RI Datasheet

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LB-602VK2

Rohm SemiconductorIn Stock: 1291LB-602VK2 Datasheet

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LBP-602VK2

Rohm SemiconductorIn Stock: 1478LBP-602VK2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDD-HTC514RI is determined by strict alignment of the following parameters:

Critical Parameters (Must Match Exactly):

• Display format: 7-Segment, 2 Character
• Common pin configuration: Common Cathode
• Color: Red
• Package type: 18-DIP
• Physical dimensions: 0.748" H × 0.984" W × 0.315" D (19.00mm × 25.00mm × 8.00mm)
• Digit size: 0.56" (14.22mm nominal tolerance)

Allowable Variation Parameters:

• Voltage - Forward (Typ): ±0.1V tolerance
• Current - Test: ±0mA (fixed at 10mA)
• Millicandela Rating: Higher values acceptable
• Wavelength - Peak: ±15nm tolerance (red spectrum range)
• Power Dissipation: Higher values acceptable
• Packaging format: Tube, Tray, or Bulk (logistics variation)

The substitute parts LB-602VK2 and LBP-602VK2 meet all critical parameters and fall within allowable variation ranges for electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

LB-602VK2 (Rohm Semiconductor) - Tray Packaging:

The LB-602VK2 is functionally equivalent to the LDD-HTC514RI with identical forward voltage (2V) and test current (10mA). This substitute maintains all critical mechanical and electrical parameters. The primary difference is packaging format (Tray vs. Tube) and increased brightness specification (16mcd vs. 3.9mcd). The LB-602VK2 is suitable for applications where tray packaging is acceptable and higher luminous intensity is beneficial. All compliance certifications (ROHS3, REACH Unaffected) are maintained.

LBP-602VK2 (Rohm Semiconductor) - Bulk Packaging:

The LBP-602VK2 provides the highest brightness rating (36mcd) among available substitutes with a slightly reduced forward voltage (1.9V vs. 2V). This part is supplied in bulk packaging and is suitable for high-volume applications where packaging format flexibility is required. The 0.1V voltage reduction falls within acceptable tolerance for common cathode 7-segment display applications. All compliance certifications remain valid.

Selection Criteria:

• Choose LB-602VK2 when tray packaging is required and moderate brightness enhancement is acceptable
• Choose LBP-602VK2 when bulk packaging is required and maximum brightness is beneficial
• All three parts maintain Active product status and full regulatory compliance
• Moisture sensitivity rating (MSL 1) is identical across all options, indicating unlimited shelf life under standard storage conditions

Frequently Asked Questions (FAQ)

Q: Can the LB-602VK2 and LBP-602VK2 be used interchangeably with the LDD-HTC514RI in existing circuit designs?

A: Yes, both substitute parts are electrically and mechanically compatible. All three parts share identical 18-DIP pinout, common cathode configuration, 2-character 7-segment display format, and physical dimensions. The forward voltage tolerance (1.9V to 2V) and test current (10mA) are within standard operating parameters for this display category.

Q: What is the significance of the different millicandela ratings?

A: Millicandela (mcd) rating indicates luminous intensity. The LDD-HTC514RI operates at 3.9mcd, while LB-602VK2 provides 16mcd and LBP-602VK2 provides 36mcd. Higher mcd ratings result in brighter display output. Selection depends on application visibility requirements and ambient lighting conditions.

Q: How do the wavelength differences (635nm vs. 650nm) affect compatibility?

A: Both wavelengths fall within the red spectrum range. The 635nm wavelength (LDD-HTC514RI) produces a slightly more orange-red appearance, while 650nm (Rohm parts) produces a pure red appearance. This is a visual characteristic difference with no impact on electrical compatibility or circuit functionality.

Q: What packaging format differences exist, and how do they affect component selection?

A: LDD-HTC514RI is supplied in Tube packaging (typically 50-100 units per tube), LB-602VK2 in Tray packaging (typically 500-1000 units per tray), and LBP-602VK2 in Bulk packaging (loose components). Packaging format affects handling, storage, and ordering quantities but does not affect electrical or mechanical performance.

Q: Are all three parts RoHS3 compliant?

A: Yes, all three parts carry ROHS3 Compliant certification and REACH Unaffected status, meeting current environmental and regulatory requirements for electronic components.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates the component has unlimited shelf life under standard storage conditions (typically 23°C, 50% relative humidity). No special moisture control or baking procedures are required before soldering, simplifying inventory management and component handling.