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Equivalent & Substitute Parts for ISE0503A DC DC Converter
Part Overview
Manufacturer Part Number: ISE0503A
Manufacturer: XP Power
Category: Isolated Module DC DC Converter
The ISE0503A is an isolated module DC DC converter with one output, designed for commercial ITE applications. It provides a regulated output of 3.3V at up to 303mA, features 1.5 kV isolation, surface mount 8-SMD package, and supports input voltage from 4.5V to 5.5V. This product is marked as Obsolete. Finding equivalent or substitute models is necessary for ongoing designs, maintenance, or replacement where the original part is no longer available.
Substiute Parts
Key Parameters
| Parameter | ISE0503A |
|---|---|
| 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) | 303mA |
| Power (Watts) | 1 W |
| Voltage - Isolation | 1.5 kV |
| Efficiency | 74% |
| Mounting Type | Surface Mount |
| Package / Case | 8-SMD Module, 5 Leads |
| Size / Dimension | 0.50" L x 0.33" W x 0.28" H (12.7mm x 8.3mm x 7.0mm) |
| Operating Temperature | -40°C ~ 105°C |
| Applications | ITE (Commercial) |
Substitute Part Grouping Explanation
Substitute parts are selected strictly based on matching electrical and mechanical parameters critical for function and system integration. The key substitution criteria are:
- Isolated Module topology
- Single output channel
- Input voltage range: 4.5V to 5.5V
- Output voltage: 3.3V
- Maximum output current: 303mA
- Power rating: 1 W
- Isolation voltage: 1.5 kV
- Efficiency: ≥74% where specified
- Surface mount 8-SMD Module, 5 Leads package
- Similar size/dimensions
- Operating temperature range: -40°C ~ 105°C
Only parts strictly meeting these parameters are considered suitable substitutes for the ISE0503A DC DC converter.
Parameter Comparison
| Parameter | ISE0503A | IES0105S03 | IES0105S3V3 |
|---|---|---|---|
| Type | Isolated Module | Isolated Module | Isolated Module |
| Number of Outputs | 1 | 1 | 1 |
| Voltage - Input (Min) | 4.5V | 4.5V | 4.5V |
| Voltage - Input (Max) | 5.5V | 5.5V | 5.5V |
| Voltage - Output 1 | 3.3V | 3.3V | - |
| Current - Output (Max) | 303mA | 303mA | - |
| Power (Watts) | 1 W | 1 W | - |
| Voltage - Isolation | 1.5 kV | 1.5 kV | 1.5 kV |
| Efficiency | 74% | 74% | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-SMD Module, 5 Leads | 8-SMD Module, 5 Leads | 8-SMD Module, 5 Leads |
| Size / Dimension | 0.50" L x 0.33" W x 0.28" H | 0.52" L x 0.33" W x 0.29" H | 0.52" L x 0.33" W x 0.29" H |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C (With Derating) | -40°C ~ 105°C (With Derating) |
| Applications | ITE (Commercial) | ITE (Commercial) | ITE (Commercial) |
Engineering Selection Recommendations
The ISE0503A is classified as obsolete. Substitute part IES0105S03 is active, matches all critical parameters, and has CE, TUV, and UL certifications. IES0105S3V3 is also active, shares the same input range and isolation, is surface mount with the same package type, and is UL certified. Both substitutes are RoHS compliant with moisture sensitivity levels specified. Selection should be based on product status and available compliance declarations for required regulatory environments.
Frequently Asked Questions (FAQ)
Q: What are the main substitution criteria for the ISE0503A DC DC converter?
A: Substitute components must match input voltage range, output voltage and current, power rating, isolation voltage, mounting type, package, and operating temperature range.
Q: Are the package and dimensions compatible between ISE0503A and its substitutes?
A: All compared substitutes use 8-SMD Module, 5 Leads surface mount package with similar dimensions.
Q: Which compliance and approval certifications are available on substitutes?
A: IES0105S03 offers CE, TUV, and UL certifications. IES0105S3V3 provides UL certification. Both substitutes are RoHS3 compliant.
Q: What should be considered regarding product status?
A: The ISE0503A is obsolete; substitutes IES0105S03 and IES0105S3V3 are active, suitable for new designs and replacement inventory.
Q: Is the operating temperature range identical for all substitutes?
A: Yes, all compared parts specify -40°C to 105°C operating temperatures, with "With Derating" noted for substitute models.
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