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Equivalent & Substitute Parts for LDD-300LS LED Driver Buck (MEAN WELL USA Inc.)
Part Overview
The LDD-300LS from MEAN WELL USA Inc. is a 300mA constant current LED driver, utilizing a buck topology with a single output voltage range from 2V to 28V. The device features PWM dimming and protections such as remote On/Off, over-temperature protection (OTP), and short-circuit protection (SCP). The part is categorized as "Not For New Designs," indicating the necessity to identify substitute models for ongoing and future engineering requirements.
Substiute Parts
Key Parameters
| Manufacturer Part Number | Type | Topology | Number of Outputs | Voltage - Input (Min) | Voltage - Input (Max) | Voltage - Output | Current - Output (Max) | Dimming | Features | Operating Temperature | Efficiency | Mounting Type | Package / Case | Size / Dimension | Approval Agency | RoHS Status | Moisture Sensitivity Level (MSL) | REACH Status | ECCN | HTSUS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LDD-300LS | Constant Current | Buck | 1 | 9V | 32V | 2 ~ 28V | 300mA | PWM | Remote On/Off, OTP, SCP | -40°C ~ 85°C | 95% | Surface Mount | 16-SMD Module | 1.00" x 0.41" x 0.37" | CE | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8504.40.9580 |
| NLDD-350H | Constant Current | Buck | 1 | 10V | 59V | 6 ~ 52V | 350mA | PWM | Remote On/Off, OVP, SCP | -40°C ~ 50°C | 96% | Through Hole | 24-DIP Module, 9 Leads | 1.26" x 0.81" x 0.49" | CE, EAC | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8504.40.9580 |
Substitute Part Grouping Explanation
Substitute parts are identified strictly by matching or exceeding the required electrical and mechanical parameters: type (Constant Current), topology (Buck), number of outputs (1), voltage input/output ranges, output current, dimming capability (PWM), core features (remote On/Off, relevant protections), operating temperature range, efficiency, mounting type, package dimensions, and regulatory status such as RoHS and CE compliance.
Parameter Comparison
| Manufacturer Part Number | Type | Topology | Number of Outputs | Voltage - Input (Min) | Voltage - Input (Max) | Voltage - Output | Current - Output (Max) | Dimming | Features | Operating Temperature | Efficiency | Mounting Type | Package / Case | Approval Agency | RoHS Status | Moisture Sensitivity Level (MSL) | REACH Status | ECCN | HTSUS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LDD-300LS | Constant Current | Buck | 1 | 9V | 32V | 2 ~ 28V | 300mA | PWM | Remote On/Off, OTP, SCP | -40°C ~ 85°C | 95% | Surface Mount | 16-SMD Module | CE | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8504.40.9580 |
| NLDD-350H | Constant Current | Buck | 1 | 10V | 59V | 6 ~ 52V | 350mA | PWM | Remote On/Off, OVP, SCP | -40°C ~ 50°C | 96% | Through Hole | 24-DIP Module, 9 Leads | CE, EAC | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | EAR99 | 8504.40.9580 |
Engineering Selection Recommendations
Selection is determined by product status, compliance certifications, and documented approval agencies. LDD-300LS is listed as "Not For New Designs," while NLDD-350H holds "Active" status and matches RoHS and CE compliance requirements. Certification status and supply chain classification are aligned for both parts.
Frequently Asked Questions (FAQ)
Q: What criteria must be met for substituting the LDD-300LS with another part?
A: Substitution is based strictly on matching type, topology, output characteristics, protection features, dimming capability, certification, and compliance status.
Q: Are there package compatibility concerns between LDD-300LS and NLDD-350H?
A: LDD-300LS utilizes a surface-mount 16-SMD module, while NLDD-350H is in a through-hole 24-DIP module; mechanical and mounting adaptations may be required.
Q: Are all regulatory and compliance certifications consistent across both models?
A: Both parts are ROHS3 Compliant, REACH Unaffected, and have CE certification.
Q: How does product status impact component selection?
A: LDD-300LS is "Not For New Designs," guiding selection towards substitutes like NLDD-350H which is currently "Active."
Q: Do both LED driver models support PWM dimming and remote On/Off control?
A: Both LDD-300LS and NLDD-350H feature PWM dimming and remote On/Off functionality.
Q: Is there a difference in the protection features between the two parts?
A: LDD-300LS provides OTP and SCP. NLDD-350H offers OVP and SCP.
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