ISE2409A-TR Equivalent & Substitute Parts

Part Overview

The ISE2409A-TR is an isolated module DC-DC converter manufactured by XP Power, designed to convert input voltages in the 21.6V to 26.4V range to a regulated 9V output at 111mA maximum current. This 1W converter operates across an extended temperature range of -40°C to 105°C and is housed in a compact 8-SMD module package with 5 leads. The ISE2409A-TR is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across input voltage range, output voltage specification, current capacity, isolation voltage, and physical form factor to ensure direct replacement capability.

Substiute Parts

ISE2409A-TR

XP PowerIn Stock: 1407ISE2409A-TR Datasheet

Current PartRFQ

IES0124S09

XP PowerIn Stock: 830IES0124S09 Datasheet

MFR RecommendedRFQ

IES0124S09

XP PowerIn Stock: 830IES0124S09 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISE2409A-TR is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Input voltage range must span 21.6V to 26.4V minimum
• Output voltage must be 9V
• Maximum output current must support 111mA
• Isolation voltage must be 1.5 kV or greater
• Power rating must be 1W or greater

Physical Compatibility Requirements:

• Mounting type must be Surface Mount
• Package configuration must be 8-SMD Module with 5 leads
• Physical dimensions must accommodate the specified footprint

Regulatory & Environmental Requirements:

• RoHS3 compliance required
• Operating temperature range must cover -40°C to 105°C
• Application category must be ITE (Commercial)

The substitute part IES0124S09 meets all electrical and physical compatibility criteria, with the distinction that it carries active product status and includes additional regulatory approvals (CE, UKCA, UL certifications).

Parameter Comparison

Engineering Selection Recommendations

The IES0124S09 is the direct functional equivalent for the obsolete ISE2409A-TR. Both converters deliver identical electrical performance across the specified input voltage range (21.6V to 26.4V), output voltage (9V), and maximum output current (111mA). The physical form factor remains compatible, with minor dimensional variations (0.02" length and width increase, 0.01" height increase) that remain within typical PCB layout tolerances for surface-mount applications.

The IES0124S09 offers the following advantages over the ISE2409A-TR:

Product Status: The IES0124S09 carries active product status, ensuring long-term availability and continued manufacturing support, whereas the ISE2409A-TR is obsolete.

Regulatory Compliance: The IES0124S09 includes CE, UKCA, and UL certifications, meeting current international safety and electromagnetic compatibility standards. The ISE2409A-TR does not specify these approvals.

Performance: The IES0124S09 achieves 83% efficiency compared to 80% for the ISE2409A-TR, resulting in reduced thermal dissipation and improved power conversion performance.

Standards Alignment: The IES0124S09 complies with IEC 62368-1, the current safety standard for audio/video and information technology equipment, whereas the ISE2409A-TR references the earlier IEC 61000 standard.

Both parts maintain identical isolation voltage (1.5 kV), operating temperature range (-40°C to 105°C with derating for the IES0124S09), and RoHS3 compliance. Direct substitution is supported for all ITE (Commercial) applications.

Frequently Asked Questions (FAQ)

Q: Can the IES0124S09 directly replace the ISE2409A-TR in existing designs?

A: Yes. The IES0124S09 provides direct functional replacement. Both converters operate across the identical input voltage range (21.6V to 26.4V), deliver 9V output at 111mA maximum current, and share the same 8-SMD module package with 5 leads. Physical dimensions differ by less than 0.02 inches in length and width, which does not impact PCB layout compatibility for standard surface-mount applications.

Q: What is the significance of the power rating difference (1W vs. 999mW)?

A: The 999mW rating for the IES0124S09 is functionally equivalent to the 1W rating of the ISE2409A-TR. Both converters deliver the same maximum output current (111mA) at 9V output, resulting in identical power delivery capability (approximately 1W at full load). The slight rating difference reflects updated measurement or specification methodology and does not affect application compatibility.

Q: Are there any thermal or derating considerations for the IES0124S09?

A: The IES0124S09 specifies operating temperature range as -40°C to 105°C with derating, whereas the ISE2409A-TR lists -40°C to 105°C without explicit derating notation. In practice, both converters operate across the same temperature extremes. The IES0124S09 notation indicates that output current or power may be reduced at elevated temperatures; specific derating curves are provided in the manufacturer datasheet.

Q: What regulatory approvals does the IES0124S09 carry?

A: The IES0124S09 holds CE, UKCA, and UL certifications and complies with IEC 62368-1 safety standard. The ISE2409A-TR does not specify regulatory approvals. For applications requiring specific certifications, the IES0124S09 provides documented compliance with current international standards.

Q: Are the physical dimensions of the IES0124S09 compatible with existing PCB layouts designed for the ISE2409A-TR?

A: Yes. The IES0124S09 dimensions (0.52" L x 0.33" W x 0.29" H) differ from the ISE2409A-TR (0.50" L x 0.33" W x 0.28" H) by 0.02 inches in length and 0.01 inches in height. These variations fall within standard PCB layout tolerances for surface-mount components and do not require PCB redesign for typical applications.

Q: What is the efficiency improvement of the IES0124S09 over the ISE2409A-TR?

A: The IES0124S09 achieves 83% efficiency compared to 80% for the ISE2409A-TR, representing a 3 percentage point improvement. At full load (111mA at 9V output), this translates to approximately 30mW reduction in power dissipation, resulting in lower thermal output and improved overall system efficiency.

Q: Is the IES0124S09 available in the same packaging format?

A: Yes. Both converters use 8-SMD module packaging with 5 leads and are supplied in tube packaging. The form factor and lead configuration are identical, supporting direct substitution in automated assembly processes.