TA20-11SRWA Equivalent & Substitute Parts

Part Overview

The TA20-11SRWA is a 5 x 7 dot matrix LED display module manufactured by Kingbright, featuring a common cathode row and common anode column configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. The module operates at 1.85V forward voltage with a 48mcd brightness rating and is housed in a 1.50" L x 2.09" W x 0.33" H package format.

Substiute Parts

TA20-11SRWA

KingbrightIn Stock: 1232TA20-11SRWA Datasheet

Current PartRFQ

TA20-11SURWA

KingbrightIn Stock: 1430TA20-11SURWA Datasheet

MFR RecommendedRFQ

LTP-2057AC

LITEONIn Stock: 1144LTP-2057AC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TA20-11SRWA are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Configuration: 5 x 7 dot matrix format
• Color: Red LED
• Voltage - Forward (Vf): 1.85V nominal operation
• Internal Connection topology: Common cathode row and/or common anode column capability

Substitution Logic:

The TA20-11SURWA qualifies as a manufacturer-recommended substitute despite differences in internal connection configuration (common anode only versus the original's mixed configuration) and brightness rating (100mcd versus 48mcd). Both parts share identical configuration (5 x 7), color (red), forward voltage (1.85V), and base product number (TA20-11), with compatible physical dimensions and active product status.

The LTP-2057AC qualifies as a similar alternative based on matching configuration (5 x 7), color (red), internal connection topology (common cathode row, common anode column), and comparable forward voltage (1.8V versus 1.85V). Physical dimensions and MSL rating are equivalent. However, the brightness rating (12mcd) is significantly lower than the original specification.

Parameter Comparison

Engineering Selection Recommendations

TA20-11SURWA (Manufacturer-Recommended Substitute):

This part is designated as the manufacturer-recommended substitute and carries active product status. It maintains identical forward voltage (1.85V) and configuration (5 x 7 red dot matrix) as the original TA20-11SRWA. The primary design consideration is the internal connection configuration: TA20-11SURWA operates as common anode only, whereas the original supports common cathode row with common anode column. Circuit designs utilizing only common anode operation will require no modification. Designs requiring common cathode row operation must be re-evaluated. The increased brightness rating (100mcd versus 48mcd) may necessitate current-limiting adjustments in the display driver circuit. Both parts are ROHS3 compliant and share the same base product number (TA20-11), indicating manufacturer lineage compatibility.

LTP-2057AC (Similar Alternative):

This LITEON part maintains the original internal connection topology (common cathode row, common anode column), eliminating circuit reconfiguration requirements. Forward voltage is 1.8V, within 0.05V of the original specification. Physical dimensions are equivalent to the original. Product status is active, ensuring supply continuity. The significant brightness reduction (12mcd versus 48mcd) represents the primary technical constraint; applications requiring the original 48mcd output will experience reduced display luminosity. ROHS3 compliance and MSL rating (1 - Unlimited) match the original specification. This option is suitable for designs where brightness reduction is acceptable or where the original connection topology is mandatory.

Frequently Asked Questions (FAQ)

Q: Can TA20-11SURWA directly replace TA20-11SRWA in existing circuit designs?

A: Direct replacement depends on circuit design. Both parts operate at identical forward voltage (1.85V) and share the same 5 x 7 configuration. However, TA20-11SURWA uses common anode configuration only, while TA20-11SRWA supports common cathode row with common anode column. If your design uses only common anode operation, replacement is direct. If common cathode row operation is required, circuit modification is necessary. Additionally, the increased brightness (100mcd versus 48mcd) may require adjustment of current-limiting resistors in the display driver circuit.

Q: What are the physical dimension differences between substitute parts?

A: TA20-11SRWA and LTP-2057AC have nearly identical dimensions (1.50" L x 2.09" W x 0.33" H and 1.50" L x 2.09" W x 0.34" H respectively), with only 0.01" height difference. TA20-11SURWA has different proportions (2.09" L x 1.48" W x 0.33" H), representing a rotated aspect ratio. PCB layout and mechanical mounting must accommodate these dimensional variations.

Q: How does brightness rating affect substitution decisions?

A: Brightness rating (millicandela) determines display visibility under specific viewing conditions. TA20-11SURWA (100mcd) is brighter than the original (48mcd), potentially requiring reduced driver current to prevent over-brightness or excessive power consumption. LTP-2057AC (12mcd) is significantly dimmer, suitable only for applications where reduced luminosity is acceptable. Brightness requirements should be verified against application specifications before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TA20-11SRWA, TA20-11SURWA, and LTP-2057AC are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations.

Q: What is the significance of internal connection configuration differences?

A: Internal connection configuration determines how the LED matrix is electrically organized. Common cathode row with common anode column (TA20-11SRWA and LTP-2057AC) allows flexible row and column addressing. Common anode only (TA20-11SURWA) restricts operation to anode-based addressing. Circuit designs must match the selected part's configuration to the display driver circuit topology. Mismatched configurations will result in non-functional or incorrectly displayed output.

Q: What packaging differences exist between these parts?

A: TA20-11SRWA is supplied in Tube packaging. TA20-11SURWA is supplied in Bulk packaging. LTP-2057AC packaging is not specified in available documentation. Packaging affects handling, storage, and component count per shipment but does not impact electrical or mechanical functionality.