LCD-A401C71TR Equivalent & Substitute Parts Reference

Part Overview

The LCD-A401C71TR is a 4-digit, 4×1 character display module manufactured by Lumex Opto/Components Inc. This reflective 7-segment TN (Twisted Nematic) display operates without backlight and is designed for applications requiring low-power visual feedback in ambient light conditions. The module features a 5V supply voltage, parallel interface, and operates across an extended temperature range of -40°C to 105°C. Product status is Active with full RoHS3 compliance and REACH unaffected designation.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits accommodation of minor dimensional or operational parameter variations within acceptable tolerances.

Substiute Parts

LCD-A401C71TR

Lumex Opto/Components Inc.In Stock: 728LCD-A401C71TR Datasheet

Current PartRFQ

LCD-S401C71TR

Lumex Opto/Components Inc.In Stock: 3191LCD-S401C71TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LCD-A401C71TR is determined by strict alignment of the following critical parameters:

Core Functional Parameters (Non-Negotiable):

• Number of Characters: 4
• Display Format: 4 x 1
• Character Format: 7-Segment
• Display Type: TN - Twisted Nematic
• Display Mode: Reflective
• Character Size: 18.00mm H x 9.00mm W
• Voltage - Supply: 5V
• Backlight: Without Backlight

Acceptable Variation Parameters:

• Outline Height (L x W x H): Minor dimensional tolerance permitted (2.18mm vs. 2.80mm represents acceptable mechanical variation)
• Viewing Area dimensions: Variation acceptable within functional constraints
• Operating Temperature Range: Substitutes with narrower range (0°C ~ 50°C) acceptable only for applications not requiring extended temperature operation
• Packaging format: Variation from tape to tray acceptable for procurement purposes

Compliance Parameters (Must Match):

• RoHS3 Compliant
• REACH Unaffected
• Manufacturer: Lumex Opto/Components Inc.

The LCD-S401C71TR qualifies as a direct substitute based on matching all core functional parameters and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (LCD-A401C71TR): Select the LCD-A401C71TR when applications require extended operating temperature range (-40°C to 105°C), such as industrial control systems, automotive instrumentation, or outdoor equipment. This part maintains the widest thermal operating envelope and is the baseline specification for this product family.

Substitute Selection (LCD-S401C71TR): The LCD-S401C71TR is electrically and functionally equivalent and qualifies as a direct substitute under the following conditions:

1. Application operating temperature remains within 0°C to 50°C range
2. Mechanical envelope accommodates the increased height (2.80mm vs. 2.18mm)
3. Reduced viewing area width (22.86mm vs. 30.48mm) is acceptable for the intended display application
4. Procurement timeline or inventory availability favors the substitute part

Both parts maintain identical electrical interface (5V parallel), display format (4-digit 7-segment reflective), and regulatory compliance (RoHS3, REACH unaffected). Selection between these parts is driven by thermal requirements and mechanical space constraints rather than functional capability.

Frequently Asked Questions (FAQ)

Q: Can LCD-S401C71TR replace LCD-A401C71TR in all applications?

A: No. The LCD-S401C71TR operates within a narrower temperature range (0°C to 50°C) compared to the LCD-A401C71TR (-40°C to 105°C). Applications requiring extended temperature operation must use the LCD-A401C71TR. Additionally, the viewing area width differs (22.86mm vs. 30.48mm), which may impact visibility in certain mounting configurations.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Operating temperature range—LCD-A401C71TR supports -40°C to 105°C while LCD-S401C71TR supports 0°C to 50°C; (2) Module height—LCD-A401C71TR is 2.18mm while LCD-S401C71TR is 2.80mm; (3) Viewing area width—LCD-A401C71TR is 30.48mm while LCD-S401C71TR is 22.86mm. All other electrical and functional parameters are identical.

Q: Are the electrical interfaces identical?

A: Yes. Both parts operate at 5V supply voltage and use parallel interface. They are electrically interchangeable from a power and signal perspective.

Q: What does the packaging difference mean?

A: LCD-A401C71TR uses standard tape packaging while LCD-S401C71TR uses tray packaging. This affects handling and automated assembly processes but does not impact the component's electrical or functional performance.

Q: Which part should I specify for a new design?

A: Specify LCD-A401C71TR as the primary component for new designs unless specific constraints limit operating temperature to 0°C to 50°C or mechanical space permits the increased height of the LCD-S401C71TR. The LCD-A401C71TR provides the broadest application compatibility.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LCD-A401C71TR and LCD-S401C71TR are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can I use LCD-S401C71TR in place of LCD-A401C71TR if my application operates at -20°C?

A: No. The LCD-S401C71TR minimum operating temperature is 0°C. Applications requiring operation below 0°C must use LCD-A401C71TR.