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Equivalent & Substitute Parts for 7803SR-C
Part Overview
The Murata Power Solutions Inc. 7803SR-C is a DC-DC converter intended as a linear regulator replacement, delivering a single 3.3V output up to 500mA from a 7.5V–36V input. The product is classified as Obsolete in its series (78xxSR), making it necessary to identify alternative models with matching or superior electrical and mechanical parameters. Suitable substitutes ensure continued support of existing designs and production where the original part is no longer available.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Outputs | 1 |
| Voltage - Input (Min) | 7.5V |
| Voltage - Input (Max) | 36V |
| Voltage - Output 1 | 3.3V |
| Current - Output (Max) | 500mA |
| Power (Watts) | 1 W |
| Applications | ITE (Commercial) |
| Features | SCP |
| Operating Temperature | -40°C ~ 70°C |
| Mounting Type | Through Hole |
| Package / Case | 3-SIP Module |
| Size / Dimension | 0.41" L x 0.42" W x 0.75" H (10.4mm x 10.7mm x 19.1mm) |
| RoHS Status | ROHS3 Compliant |
| REACH Status | REACH Affected |
Substitute Part Grouping Explanation
Substitution is based strictly on the following key parameters: number of outputs, input voltage range, output voltage, maximum output current, power rating, application, features, operating temperature, mounting type, package/case, dimensions, RoHS status, and REACH status. Only parts matching or exceeding these parameters in the context of the original intended use are included as substitutes.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Number of Outputs | Voltage - Input (Min) | Voltage - Input (Max) | Voltage - Output 1 | Current - Output (Max) | Power (Watts) | Applications | Features | Operating Temperature | Mounting Type | Package / Case | Size / Dimension | RoHS Status | REACH Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7803SR-C | Murata Power Solutions Inc. | 1 | 7.5V | 36V | 3.3V | 500mA | 1 W | ITE (Commercial) | SCP | -40°C ~ 70°C | Through Hole | 3-SIP Module | 0.41" x 0.42" x 0.75" | ROHS3 Compliant | REACH Affected | Obsolete |
| OKI-78SR-3.3/1.5-W36-C | Murata Power Solutions Inc. | 1 | 7V | 36V | 3.3V | 1.5A | 5 W | ITE (Commercial) | SCP | -40°C ~ 85°C | Through Hole | 3-SIP Module | 0.41" x 0.30" x 0.65" | ROHS3 Compliant | REACH Unaffected | Active |
| R-783.3-0.5 | Recom Power | 1 | 4.75V | 32V | 3.3V | 500mA | 2 W | ITE (Commercial) | OTP, SCP | -40°C ~ 85°C | Through Hole | 3-SIP Module | 0.45" x 0.30" x 0.40" | ROHS3 Compliant | REACH Unaffected | Active |
| R-78E3.3-0.5 | Recom Power | 1 | 6V | 28V | 3.3V | 500mA | 2 W | ITE (Commercial) | SCP | -40°C ~ 85°C | Through Hole | 3-SIP Module | 0.46" x 0.33" x 0.41" | ROHS3 Compliant | REACH Unaffected | Active |
Engineering Selection Recommendations
The original 7803SR-C DC-DC converter is Obsolete. All listed substitutes are classified as Active and are ROHS3 Compliant. The substitutes are also Through Hole mounting, 3-SIP Module package types, and provide a single 3.3V output. Review of the REACH status shows the original part is REACH Affected, while all substitutes are REACH Unaffected. No additional technical considerations are included beyond the provided compliance and stock status.
Frequently Asked Questions (FAQ)
Q1: What parameters are used to determine a valid substitute for the 7803SR-C?
A1: Substitution is based on the number of outputs, input voltage range, output voltage, maximum output current, power rating, application, features, operating temperature, mounting type, package/case, size, RoHS status, and REACH status.
Q2: Are all substitute parts form-factor compatible with the 7803SR-C?
A2: All substitutes use a 3-SIP Module package and Through Hole mounting type, aligning with the main part's mechanical configuration.
Q3: Can any of the substitutes provide higher output current or power than the 7803SR-C?
A3: The OKI-78SR-3.3/1.5-W36-C offers a higher maximum output current (1.5A) and higher power rating (5W) while maintaining the required output voltage.
Q4: Are all substitutes compliant with ROHS3 requirements?
A4: Yes, all alternatives are specified as ROHS3 Compliant.
Q5: Are there differences in REACH status between the original and substitute parts?
A5: The original part is REACH Affected, whereas all substitutes are REACH Unaffected according to the provided information.
Q6: Are the substitutes suitable for identical applications compared to the 7803SR-C?
A6: All substitutes are designated for ITE (Commercial) applications as specified for the 7803SR-C.
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