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Equivalent & Substitute Parts for ISH0503A-TR
Part Overview
The ISH0503A-TR by XP Power is an isolated DC DC converter module delivering 3.3V at up to 400mA output from a 4.5V to 5.5V input, rated at 2W output power, and packaged in an 8-SMD Module, 5 Leads format. The module is RoHS3 compliant with an isolation voltage of 1.5kV and provides short-circuit protection. Its product status is obsolete. As the part is no longer in production or available from the manufacturer, it is necessary to identify substitute models with identical electrical, mechanical, and compliance parameters to ensure design continuity and form-fit-function replacement.
Substiute Parts
Key Parameters
| Parameter | ISH0503A-TR |
|---|---|
| Manufacturer Part Number | ISH0503A-TR |
| Type | Isolated Module |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output 1 | 3.3V |
| Current - Output (Max) | 400mA |
| Power (Watts) | 2 W |
| Voltage - Isolation | 1.5 kV |
| Applications | ITE (Commercial) |
| Features | SCP |
| Operating Temperature | -40°C ~ 105°C |
| Efficiency | 72% |
| Mounting Type | Surface Mount |
| Package / Case | 8-SMD Module, 5 Leads |
| Size / Dimension | 0.50" L x 0.44" W x 0.29" H |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute selection for isolated DC DC converter modules in the same category is based strictly on matching electrical (input/output voltage, output current, output power, isolation voltage), mechanical (mounting type, package/case, size/dimension), and compliance (RoHS, MSL, certification standards) parameters. Compatibility is defined by identical or strictly equivalent values in these fields.
Key parameters for substitution:
- Input Voltage Range
- Output Voltage and Current
- Output Power
- Isolation Voltage
- Mounting Type
- Package / Case
- Size / Dimension
- RoHS and Moisture Sensitivity Level compliance
- Application category (ITE Commercial)
- Features (e.g., SCP)
Parameter Comparison
| Parameter | ISH0503A-TR (XP Power) | PDS2-S5-S3-M-TR (CUI Inc.) |
|---|---|---|
| Type | Isolated Module | Isolated Module |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 4.5V | 4.5V |
| Voltage - Input (Max) | 5.5V | 5.5V |
| Voltage - Output 1 | 3.3V | 3.3V |
| Current - Output (Max) | 400mA | 400mA |
| Power (Watts) | 2 W | 2 W |
| Voltage - Isolation | 1.5 kV | 1.5 kV |
| Applications | ITE (Commercial) | ITE (Commercial) |
| Features | SCP | SCP |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C (With Derating) |
| Efficiency | 72% | 78% |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SMD Module, 5 Leads | 8-SMD Module, 5 Leads |
| Size / Dimension | 0.50" L x 0.44" W x 0.29" H | 0.50" L x 0.33" W x 0.29" H |
| RoHS Status | ROHS3 Compliant | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
ISH0503A-TR is obsolete and is no longer available from XP Power. Substitute part number PDS2-S5-S3-M-TR by CUI Inc. is an active product with matching category, electrical specifications, mechanical format, and compliance standards including RoHS and MSL 1. It provides identical input/output voltages, output current, output power, isolation voltage, and package type. Approvals and certifications specified in the provided parameters are present on both models.
Frequently Asked Questions (FAQ)
Q: What parameters are crucial when selecting a substitute for ISH0503A-TR?
A: Critical parameters include input voltage range, output voltage, output current, output power, isolation voltage, mechanical package/type, size/dimension, compliance standards, and application category.
Q: Is PDS2-S5-S3-M-TR a direct substitute for ISH0503A-TR regarding form, fit, and function?
A: Based strictly on the provided parameters, PDS2-S5-S3-M-TR matches form factor, electrical ratings, and compliance, making it a direct substitute within this product category.
Q: Are there any differences in package size that impact compatibility?
A: Both are in 8-SMD Module, 5 Leads format; PDS2-S5-S3-M-TR has a width of 0.33", while ISH0503A-TR has a width of 0.44". All other dimensions are identical according to input parameters.
Q: Do both models meet RoHS and MSL 1 standards?
A: The ISH0503A-TR is ROHS3 compliant with MSL 1; PDS2-S5-S3-M-TR is RoHS compliant and MSL 1 (Unlimited).
Q: What application types are supported by both models?
A: Both modules are specified as suitable for ITE (Commercial) applications.
Q: Does the substitute offer additional features not found in the original?
A: Based on the provided input, both feature short-circuit protection (SCP). Efficiency is higher on PDS2-S5-S3-M-TR. All other specified features are equivalent.
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