MDLS-20433-C-LV-G-LED01G Equivalent & Substitute Parts

Part Overview

The MDLS-20433-C-LV-G-LED01G is a character display module manufactured by Varitronix, featuring an 80-character LCD with 20x4 format and transflective STN display technology. This module is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

The module employs a 5x8 dot character format with green LED backlighting and operates via parallel interface. Its compact form factor (65.00mm x 28.40mm x 8.00mm) and transflective display mode enable operation across the -5°C to 50°C temperature range with supply voltage of 4.8V to 6V.

Key Parameters

Parameter	Value
Manufacturer Part Number	MDLS-20433-C-LV-G-LED01G
Manufacturer	Varitronix
Number of Characters	80
Display Format	20 x 4
Character Format	5 x 8 Dots
Display Type	STN - Super-Twisted Nematic
Display Mode	Transflective
Backlight Type	LED - Green
Interface	Parallel
Voltage - Supply	4.8V ~ 6V
Operating Temperature	-5°C ~ 50°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MDLS-20433-C-LV-G-LED01G is determined by the following critical parameters:

Core Functional Parameters:

Display format (20 x 4 character layout)
Character format (5 x 8 dot matrix)
Display type (STN - Super-Twisted Nematic)
Display mode (Transflective)
Interface type (Parallel)
Number of characters (80)

Electrical Compatibility Parameters:

Supply voltage range overlap
Operating temperature range compatibility

Mechanical Compatibility Parameters:

Physical form factor and mounting considerations
Outline dimensions

The MDLS20464BD-101 qualifies as a substitute based on matching display format, character format, display type, display mode, interface, and character count. Both modules operate within overlapping temperature ranges and utilize parallel interface architecture.

Parameter Comparison

Parameter	MDLS-20433-C-LV-G-LED01G	MDLS20464BD-101
Manufacturer	Varitronix	Varitronix
Number of Characters	80	80
Display Format	20 x 4	20 x 4
Character Format	5 x 8 Dots	5 x 8 Dots
Display Type	STN - Super-Twisted Nematic	STN - Super-Twisted Nematic
Display Mode	Transflective	Transflective
Backlight Type	LED - Green	LED - Yellow/Green
Interface	Parallel	Parallel
Voltage - Supply	4.8V ~ 6V	4.75V ~ 5.25V
Operating Temperature	-5°C ~ 50°C	-5°C ~ 50°C
Outline L x W x H	65.00mm x 28.40mm x 8.00mm	77.00mm x 47.00mm x 13.00mm
Character Size H x W	3.15mm x 1.85mm	4.03mm x 2.30mm
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MDLS20464BD-101 is available as an active product with current manufacturing status, providing supply chain continuity for the obsolete MDLS-20433-C-LV-G-LED01G.

Both modules share identical display architecture (20x4 format, 5x8 dot character matrix, STN transflective technology, parallel interface) and operate within compatible temperature ranges (-5°C to 50°C).

The MDLS20464BD-101 features a narrower supply voltage window (4.75V to 5.25V) compared to the original module (4.8V to 6V). System power supply specifications must accommodate this tighter tolerance.

Physical dimensions differ significantly: the MDLS20464BD-101 measures 77.00mm x 47.00mm x 13.00mm versus the original 65.00mm x 28.40mm x 8.00mm. Mechanical integration requires verification of available mounting space and connector accessibility.

The MDLS20464BD-101 incorporates RoHS compliance, whereas the original part status is not specified. The substitute employs yellow/green LED backlighting in place of the original green LED, resulting in altered visual appearance and light output characteristics.

Frequently Asked Questions (FAQ)

Q: Can the MDLS20464BD-101 directly replace the MDLS-20433-C-LV-G-LED01G?

A: Both modules share identical display format (20x4), character matrix (5x8 dots), display technology (STN transflective), and interface (parallel). Functional compatibility exists at the display protocol level. Physical integration requires verification due to dimensional differences and connector positioning.

Q: What are the key differences between these modules?

A: Primary differences include physical dimensions (MDLS20464BD-101 is larger), supply voltage range (MDLS20464BD-101 operates within 4.75V to 5.25V versus 4.8V to 6V), backlight color (yellow/green versus green), and product status (active versus obsolete). Character size also differs due to larger viewing area in the substitute.

Q: Are there voltage compatibility concerns?

A: The MDLS20464BD-101 requires supply voltage between 4.75V and 5.25V. If the original system supplies voltage outside this range (particularly above 5.25V or below 4.75V), the substitute module may not operate within specification. System power supply output must be verified and potentially adjusted.

Q: How do the physical dimensions affect integration?

A: The MDLS20464BD-101 is larger in all dimensions (77mm x 47mm x 13mm versus 65mm x 28.4mm x 8mm). Mechanical enclosure space, mounting bracket compatibility, and connector clearance must be evaluated before substitution. The increased height (13mm versus 8mm) may present integration challenges in space-constrained applications.

Q: Does the backlight color change affect system operation?

A: The backlight color change from green to yellow/green alters visual appearance and light spectrum output. Applications requiring specific color matching or light wavelength characteristics must evaluate whether the yellow/green backlight meets functional requirements.

Q: What is the inventory status for each module?

A: The MDLS-20433-C-LV-G-LED01G (obsolete) has 999 pieces in stock. The MDLS20464BD-101 (active) has 782 pieces available. The active status of the substitute ensures ongoing availability for future procurement.

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