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Equivalent & Substitute Parts for LDB-350L
Part Overview
The MEAN WELL USA Inc. LDB-350L is an active, through-hole constant current LED driver utilizing a buck-boost topology, delivering up to 350mA output current across a 2–40V output range from a 9–36V input. It features remote on/off, overtemperature protection, short-circuit protection, and supports PWM dimming. Due to inventory considerations, product lifecycle status, or multi-sourcing requirements, identifying compatible alternative models with equivalent electrical, mechanical, and compliance parameters is essential.
Substiute Parts
Key Parameters
| Part Number | Type | Topology | 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 | MSL | REACH Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LDB-350L | Constant Current | Buck-Boost | 9V | 36V | 2 ~ 40V | 350mA | PWM | Remote On/Off, OTP, SCP | -40°C ~ 71°C | 90% | Through Hole | 24-DIP Module, 9 Leads | 1.25" x 0.80" x 0.48" (31.8mm x 20.3mm x 12.2mm) | CE | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Active |
| RBD-12-0.35 | Constant Current | Buck-Boost | 8V | 36V | 2 ~ 40V | 350mA | Analog, PWM | Remote On/Off, OTP, SCP | -40°C ~ 75°C | 92% | Through Hole | 7-DIP Module | 1.28" x 0.66" x 0.44" (32.6mm x 16.7mm x 11.1mm) | CE, cULus, EN | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Obsolete |
Substitute Part Grouping Explanation
Substitute models for LDB-350L are grouped strictly according to the following allowed parameters:
- Electrical performance: Output current, input/output voltage range, topology, efficiency, dimming method, and included protection features
- Mechanical characteristics: Mounting type, package/case, size, and lead count
- Regulatory and environmental compliance: Approval agencies, RoHS status, MSL, and REACH status
- Product status: Active, obsolete, or discontinued
Parameter Comparison
| Part Number | Type | Topology | 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 | MSL | REACH Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LDB-350L | Constant Current | Buck-Boost | 9V | 36V | 2 ~ 40V | 350mA | PWM | Remote On/Off, OTP, SCP | -40°C ~ 71°C | 90% | Through Hole | 24-DIP Module, 9 Leads | 1.25" x 0.80" x 0.48" | CE | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Active |
| RBD-12-0.35 | Constant Current | Buck-Boost | 8V | 36V | 2 ~ 40V | 350mA | Analog, PWM | Remote On/Off, OTP, SCP | -40°C ~ 75°C | 92% | Through Hole | 7-DIP Module | 1.28" x 0.66" x 0.44" | CE, cULus, EN | ROHS3 Compliant | 1 (Unlimited) | REACH Unaffected | Obsolete |
Engineering Selection Recommendations
When selecting substitutes for LDB-350L, consider product status, RoHS compliance, and regulatory approvals as provided. LDB-350L is active and ROHS3 compliant. RBD-12-0.35 is listed as obsolete, though also ROHS3 compliant and REACH unaffected. Both parts list CE approval, with RBD-12-0.35 providing additional cULus and EN certifications. Confirm that current compliance and approval requirements align with the intended application environment.
Frequently Asked Questions (FAQ)
Q: What are the key criteria for selecting substitute parts for LDB-350L?
A: The key criteria are matching electrical specifications (output current, input/output voltage range, topology, and dimming capabilities), protection features, mounting type, package, physical dimensions, and regulatory compliance.
Q: Are RBD-12-0.35 and LDB-350L electrically compatible?
A: Both devices are constant current, buck-boost topology LED drivers with identical output current (350mA), voltage range (2 ~ 40V), and include similar protection features and dimming support as specified.
Q: Can the RBD-12-0.35 be used in the same PCB footprint as LDB-350L?
A: Mechanical differences exist: LDB-350L uses a 24-DIP module (9 leads), whereas RBD-12-0.35 uses a 7-DIP module. Direct footprint compatibility must be confirmed with the actual physical package and PCB layout.
Q: Do substitute parts meet the same compliance requirements?
A: Both LDB-350L and RBD-12-0.35 are ROHS3 compliant, carry CE approval, and are REACH unaffected per the provided data.
Q: Does product status affect substitution?
A: LDB-350L is active, while RBD-12-0.35 is obsolete. Substitute selection must consider product availability and lifecycle requirements as provided.
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