LTC-5837P 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LTC-5837P is a quad red 7-segment LED display module manufactured by Lite-On Inc., featuring a 0.52" character size in a 40-DIP package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The display operates as a common anode configuration with a forward voltage of 2.1V and test current of 20mA, designed for numeric and alphanumeric display applications requiring standard brightness output.

Substiute Parts

LTC-5837P

Lite-On Inc.In Stock: 811LTC-5837P Datasheet

Current PartRFQ

LTC-5837JD

Lite-On Inc.In Stock: 662LTC-5837JD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTC-5837P is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Number of Characters: 4
• Display Type: 7-Segment
• Common Pin Configuration: Common Anode
• Color: Red
• Character Size: 0.52" (13.21mm)
• Package / Case: 40-DIP (0.600", 15.24mm)
• Physical Dimensions: 0.689" H x 1.990" W x 0.276" D (17.50mm x 50.55mm x 7.00mm)
• Voltage - Forward (Vf) (Typ): 2.1V

Allowable Variation Parameters:

• Current - Test: May vary based on application requirements
• Millicandela Rating: May vary within acceptable brightness ranges
• Wavelength - Peak: May vary within red spectrum range
• Power Dissipation (Max): May vary based on current specifications

The LTC-5837JD qualifies as a direct substitute, maintaining all mandatory parameters while offering an active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LTC-5837JD is the qualified substitute for the obsolete LTC-5837P. Selection of this substitute is supported by the following factors:

Product Status: The LTC-5837JD carries active product status, ensuring continued availability and manufacturing support, whereas the LTC-5837P is obsolete and subject to supply discontinuation.

Compliance Certification: The LTC-5837JD is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Electrical Compatibility: Both parts maintain identical forward voltage (2.1V) and package configuration (40-DIP), ensuring direct PCB compatibility without circuit redesign.

Operational Characteristics: The LTC-5837JD operates at reduced test current (1mA versus 20mA), resulting in lower power consumption. The brightness differential (0.7mcd versus 0.8mcd) and wavelength shift (650nm versus 697nm) remain within acceptable parameters for standard display applications.

Frequently Asked Questions (FAQ)

Q: Can the LTC-5837JD be used as a direct replacement for the LTC-5837P without PCB modifications?

A: Yes. Both parts share identical package configuration (40-DIP), physical dimensions, forward voltage (2.1V), and common anode pinout. No PCB layout changes are required for substitution.

Q: What is the significance of the current difference between LTC-5837P (20mA) and LTC-5837JD (1mA)?

A: The LTC-5837JD operates at significantly lower test current, reducing power dissipation and heat generation. Circuit current-limiting resistor values may require adjustment to optimize brightness output for the specific application.

Q: How does the wavelength difference (697nm versus 650nm) affect display appearance?

A: Both wavelengths fall within the red spectrum. The LTC-5837P produces a deeper red (697nm), while the LTC-5837JD produces a standard red (650nm). Visual appearance difference is minimal in typical display applications.

Q: Is the LTC-5837JD suitable for new designs?

A: Yes. The LTC-5837JD carries active product status and ROHS3 compliance, making it appropriate for new product development and long-term production continuity.

Q: What is the impact of the brightness rating difference (0.8mcd versus 0.7mcd)?

A: The brightness differential is approximately 12.5%, which is within acceptable tolerance for most display applications. Circuit design should account for this variation through appropriate current-limiting resistor selection.

Q: Are there any moisture sensitivity or handling differences between these parts?

A: Both parts carry identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no special moisture control requirements during storage or handling.