ISH0509A-TR Equivalent & Substitute Parts

Part Overview

The ISH0509A-TR is an isolated module DC-DC converter manufactured by XP Power, designed to convert 4.5V to 5.5V input voltage to a regulated 9V output at 222mA maximum current. This 2W converter is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. The part operates across a wide temperature range of -40°C to 105°C and provides 1.5kV isolation suitable for commercial ITE applications.

Substiute Parts

ISH0509A-TR

XP PowerIn Stock: 1091ISH0509A-TR Datasheet

Current PartRFQ

PDS2-S5-S9-M-TR

CUI Inc.In Stock: 1683PDS2-S5-S9-M-TR Datasheet

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B0509XT-2WR3

Mornsun America, LLCIn Stock: 1390B0509XT-2WR3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Equivalent substitutes for the ISH0509A-TR are identified based on strict parameter matching across electrical and mechanical specifications. The substitution criteria include:

Critical Matching Parameters:

• Input voltage range: 4.5V - 5.5V
• Output voltage: 9V
• Output current capacity: 222mA
• Power rating: 2W nominal
• Isolation voltage: 1.5kV
• Mounting type: Surface Mount
• Package configuration: 8-SMD Module, 5 Leads
• Operating temperature range: -40°C to 105°C
• Application category: ITE (Commercial)

Both identified substitutes meet all critical electrical parameters and mechanical form factors. The primary distinction between alternatives lies in product status (active vs. obsolete), manufacturing compliance certifications, and minor dimensional variations within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

PDS2-S5-S9-M-TR (CUI Inc.) is the primary recommended substitute for the obsolete ISH0509A-TR. This part maintains identical electrical specifications, operating temperature range, and efficiency rating. The PDS2-S5-S9-M-TR carries active product status with RoHS compliance and EN certification (EN 55024, EN 55032 Class A). Dimensional differences are minimal, with reduced width (8.3mm vs. 11.2mm) providing potential PCB layout advantages. This part is available in Cut Tape and Digi-Reel packaging formats.

B0509XT-2WR3 (Mornsun America, LLC) serves as a secondary equivalent option. This part meets all critical electrical parameters with enhanced efficiency (85% vs. 82%). It carries ROHS3 compliance and CE/UKCA certifications per IEC 62368-1. Dimensional variation is slightly larger (13.2mm length, 8.5mm width), and moisture sensitivity is not applicable. This part is supplied in Tray packaging.

Both substitutes are active products with current manufacturing support, addressing the obsolescence status of the original ISH0509A-TR. Selection between alternatives depends on specific compliance requirements, packaging preferences, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the PDS2-S5-S9-M-TR directly replace the ISH0509A-TR in existing designs?

A: Yes. The PDS2-S5-S9-M-TR matches all critical electrical parameters: 4.5V-5.5V input, 9V output, 222mA maximum current, 2W power rating, 1.5kV isolation, and -40°C to 105°C operating range. The 8-SMD Module, 5-lead package is identical. Dimensional differences (width reduction from 11.2mm to 8.3mm) are within acceptable tolerances for most applications.

Q: What are the key differences between the two substitute options?

A: The primary differences are: (1) Efficiency: B0509XT-2WR3 provides 85% efficiency versus 82% for both ISH0509A-TR and PDS2-S5-S9-M-TR; (2) Dimensions: B0509XT-2WR3 is slightly larger (13.2mm x 8.5mm vs. 12.7mm x 8.3mm); (3) Packaging: PDS2-S5-S9-M-TR offers Cut Tape/Digi-Reel options while B0509XT-2WR3 is supplied in Tray; (4) Certifications: PDS2-S5-S9-M-TR carries EN certifications while B0509XT-2WR3 carries CE/UKCA certifications.

Q: Are there any compliance or certification differences between substitutes?

A: Both substitutes are RoHS compliant. PDS2-S5-S9-M-TR holds EN 55024 and EN 55032 Class A certifications. B0509XT-2WR3 holds CE and UKCA certifications per IEC 62368-1. Both carry EAR99 ECCN classification and identical HTSUS codes. Selection depends on regional compliance requirements.

Q: How do the packaging options affect component selection?

A: PDS2-S5-S9-M-TR is available in Cut Tape (CT) and Digi-Reel formats, suitable for automated assembly and tape-and-reel handling. B0509XT-2WR3 is supplied in Tray packaging, suitable for manual handling and lower-volume applications. Packaging choice impacts procurement logistics and assembly process compatibility.

Q: What is the significance of the power rating difference (2W vs. 1.9W)?

A: The B0509XT-2WR3 is rated at 1.9W versus 2W for the other parts. Both deliver identical output current (222mA at 9V), resulting in equivalent power delivery (approximately 2W). The 1.9W rating reflects manufacturer specification methodology and does not indicate reduced performance for this application.

Q: Are there any thermal derating considerations for the substitute parts?

A: Both PDS2-S5-S9-M-TR and B0509XT-2WR3 specify operating temperature range as -40°C to 105°C with derating. The original ISH0509A-TR does not specify derating notation. Derating typically applies at temperature extremes; consult manufacturer datasheets for specific derating curves if operation near temperature limits is required.

Q: What is the moisture sensitivity level significance?

A: ISH0509A-TR and PDS2-S5-S9-M-TR both carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling. B0509XT-2WR3 lists MSL as Not Applicable, indicating the component does not require moisture-controlled storage. Both conditions are acceptable for standard industrial handling.