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SCW03B-12 Equivalent & Substitute Parts Reference
Part Overview
The MEAN WELL USA Inc. SCW03B-12 is an isolated module DC-DC converter delivering 12V at 250mA output (3W) with a 1kV isolation voltage. It accepts a wide input voltage range (18V - 36V) and provides robust features such as Over Current Protection (OCP) and Short Circuit Protection (SCP). The SCW03B-12 is provided in a 24-DIP module with 8 leads, sized 1.25" x 0.80" x 0.48". This part is marked as Obsolete, making it necessary to find alternative models for continued availability and supply chain assurance in compatible applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SCW03B-12 |
| Type | Isolated Module |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 18V |
| Voltage - Input (Max) | 36V |
| Voltage - Output 1 | 12V |
| Current - Output (Max) | 250mA |
| Power (Watts) | 3 W |
| Voltage - Isolation | 1 kV |
| Features | OCP, SCP |
| Operating Temperature | -40°C ~ 71°C (With Derating) |
| Efficiency | 80% |
| Mounting Type | Through Hole |
| Package / Case | 24-DIP Module, 8 Leads |
| Size / Dimension | 1.25" L x 0.80" W x 0.48" H (31.8mm x 20.3mm x 12.2mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution is carried out strictly based on electrical and mechanical compatibility:
- Input voltage range (18V - 36V)
- Output voltage (12V)
- Maximum output current (250mA)
- Power rating (3W)
- Isolation voltage (≥1kV)
- Output type and quantity (Isolated Module, single output)
- Mounting type (Through Hole)
- Package format and dimensions (24-DIP Module, 8 Leads)
- Regulatory and compliance attributes (RoHS, MSL, REACH)
- Integrated features (OCP, SCP, or equivalent)
Only products matching or exceeding these criteria are considered as valid substitutes.
Parameter Comparison
| Parameter | Main Part SCW03B-12 |
Direct Substitute SCWN03B-12 |
Similar Substitute REC3-2412SRW/H4/A |
|---|---|---|---|
| Manufacturer | MEAN WELL USA Inc. | MEAN WELL USA Inc. | Recom Power |
| Type | Isolated Module | Isolated Module | Isolated Module |
| Number of Outputs | 1 | 1 | 1 |
| Voltage - Input (Min) | 18V | 18V | 18V |
| Voltage - Input (Max) | 36V | 36V | 36V |
| Voltage - Output 1 | 12V | 12V | 12V |
| Current - Output (Max) | 250mA | 250mA | 250mA |
| Power (Watts) | 3 W | 3 W | 3 W |
| Voltage - Isolation | 1 kV | 3 kV | 4 kV |
| Features | OCP, SCP | OCP, SCP, UVLO | SCP |
| Operating Temperature | -40°C ~ 71°C (With Derating) | -40°C ~ 90°C (With Derating) | -40°C ~ 85°C |
| Efficiency | 80% | 86% | 85% |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | 24-DIP Module, 8 Leads | 24-DIP Module, 8 Leads | 24-DIP Module, 8 Leads |
| Size / Dimension | 1.25" x 0.80" x 0.48" | 1.25" x 0.80" x 0.40" | 1.26" x 0.80" x 0.40" |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Selection between SCW03B-12, SCWN03B-12, and REC3-2412SRW/H4/A should be based on product status and compliance. SCW03B-12 is Obsolete, and the substitutes SCWN03B-12 and REC3-2412SRW/H4/A are Active. All listed parts hold ROHS3 compliance, Unlimited (MSL 1) Moisture Sensitivity, and unaffected REACH status, ensuring conformity with standard regulatory requirements.
Frequently Asked Questions (FAQ)
Q1: What are the primary parameters for substituting SCW03B-12?
A1: Substitution is based on input voltage range, output voltage and current, power rating, isolation voltage, features, mounting type, package, and compliance statuses.
Q2: Is package compatibility maintained among substitutes?
A2: Yes. All listed substitutes use the 24-DIP Module, 8 Leads package and support Through Hole mounting.
Q3: Are substitute parts RoHS and REACH compliant?
A3: Yes. All parts are ROHS3 Compliant and REACH Unaffected.
Q4: How does the operating temperature range compare among substitutes?
A4: SCW03B-12 operates from -40°C to +71°C. SCWN03B-12 and REC3-2412SRW/H4/A have wider operational temperature ranges.
Q5: Do the substitutes provide the same or higher electrical isolation?
A5: Yes. Substitute parts have equal or greater voltage isolation ratings than the SCW03B-12.
Q6: Are all listed parts in active production?
A6: SCW03B-12 is Obsolete. SCWN03B-12 and REC3-2412SRW/H4/A are Active.
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