XDMR09A3 Equivalent & Substitute Parts

Part Overview

The XDMR09A3 is a 0.36" red 3-digit common anode LED display module manufactured by SunLED. This 7-segment display is designed for numeric and character applications requiring low-voltage operation at 1.8V with a 10mA test current. The part is housed in a 12-DIP package with 11 leads and measures 0.551" H x 0.886" W x 0.283" D.

The XDMR09A3 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this display module is specified.

Substiute Parts

XDMR09A3

SunLEDIn Stock: 784XDMR09A3 Datasheet

Current PartRFQ

XDMDK09A3

SunLEDIn Stock: 887XDMDK09A3 Datasheet

SimilarRFQ

ELT-316USOWA/S530-A4

Everlight Electronics Co LtdIn Stock: 999ELT-316USOWA/S530-A4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the XDMR09A3 are selected based on strict compatibility criteria. The following parameters must align for direct substitution:

Critical Parameters (Must Match):

• Number of Characters: 3
• Display Type: 7-Segment
• Common Pin Configuration: Common Anode
• Package / Case: 12-DIP (0.400", 10.16mm), 11 Leads
• Physical Dimensions: Equivalent within tolerance (0.551" H x 0.886" W x 0.283" D)
• Digit/Alpha Size: 0.36" (9.14mm)

Allowable Variation Parameters:

• Color: Red or Orange-Red (within visible spectrum compatibility)
• Voltage - Forward (Vf): 1.8V to 2.0V (within standard LED forward voltage tolerance)
• Current - Test: 10mA to 20mA (within typical LED operating range)
• Millicandela Rating: Variable (brightness specification independent of substitution)
• Wavelength - Peak: 645nm to 655nm (red spectrum range)
• Power Dissipation (Max): 60mW to 75mW (within thermal design margin)

Parameter Comparison

Engineering Selection Recommendations

XDMDK09A3 (SunLED)

The XDMDK09A3 is the primary substitute for the XDMR09A3. Both parts are manufactured by SunLED and share identical mechanical specifications and package configuration. The XDMDK09A3 is currently in active production status, ensuring long-term availability. Forward voltage increases marginally from 1.8V to 1.85V, remaining within standard LED operating tolerance. Test current remains at 10mA. The XDMDK09A3 carries ROHS3 compliance certification and is available in tube packaging. This part is the direct functional equivalent and requires no circuit redesign for substitution.

ELT-316USOWA/S530-A4 (Everlight Electronics Co Ltd)

The ELT-316USOWA/S530-A4 is an alternative substitute when XDMDK09A3 availability is constrained. This Everlight part maintains the same 3-digit, 7-segment, common anode configuration and 12-DIP package format. Physical dimensions are equivalent within manufacturing tolerance (0.555" H x 0.890" W versus 0.551" H x 0.886" W). The forward voltage increases to 2V and test current doubles to 20mA, requiring circuit current-limiting resistor adjustment. The wavelength shifts to 621nm (orange-red spectrum) compared to the 655nm red specification of the main part. Power dissipation reduces to 60mW maximum. The ELT-316USOWA/S530-A4 carries ROHS3 compliance and MSL 1 rating. This part is suitable for applications where the orange-red color shift and increased current draw are acceptable within system design parameters.

Frequently Asked Questions (FAQ)

Q: Can the XDMDK09A3 be used as a direct replacement for the XDMR09A3 without circuit modification?

A: Yes. The XDMDK09A3 maintains identical package, pinout, and electrical operating parameters within standard tolerance. No circuit redesign is required. Both parts operate at 10mA test current and share the same 12-DIP (0.400", 10.16mm) 11-lead configuration.

Q: What is the primary difference between the XDMDK09A3 and ELT-316USOWA/S530-A4?

A: The XDMDK09A3 maintains the red color specification (655nm peak wavelength) and 10mA test current of the original XDMR09A3. The ELT-316USOWA/S530-A4 shifts to orange-red (621nm peak wavelength) and requires 20mA test current, necessitating current-limiting resistor adjustment in the circuit.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the 12-DIP (0.400", 10.16mm) 11-lead package. Physical dimensions are equivalent within manufacturing tolerance, ensuring compatibility with existing PCB layouts designed for the XDMR09A3.

Q: What is the impact of the forward voltage difference between XDMR09A3 (1.8V) and ELT-316USOWA/S530-A4 (2V)?

A: The 0.2V increase requires adjustment of the current-limiting resistor in the circuit to maintain proper segment brightness and current draw. This is a standard design consideration when substituting LED display modules with different forward voltage specifications.

Q: Why is the XDMR09A3 listed as obsolete?

A: The XDMR09A3 has been discontinued by SunLED. The XDMDK09A3 is the active production equivalent from the same manufacturer and is recommended for new designs and ongoing production requirements.

Q: Can the ELT-316USOWA/S530-A4 be used in applications requiring strict red color specification?

A: No. The ELT-316USOWA/S530-A4 produces orange-red output (621nm peak wavelength) rather than pure red (655nm). Applications with strict color requirements must use the XDMDK09A3 or XDMR09A3.

Q: What compliance certifications apply to all substitute parts?

A: All three parts carry RoHS compliance certification (XDMR09A3: RoHS Compliant; XDMDK09A3 and ELT-316USOWA/S530-A4: ROHS3 Compliant). All parts are REACH Unaffected and classified as EAR99 for export control purposes.