BD33HC5MEFJ-LBH2 Equivalent & Substitute Parts

Part Overview

The BD33HC5MEFJ-LBH2 is a linear voltage regulator IC from Rohm Semiconductor designed for positive fixed output applications. This device delivers 1.5A output current at a fixed 3.3V output with integrated protection features including over-current, over-temperature, and soft-start functionality. The part is actively produced and widely available in inventory, making it suitable for new designs and production applications requiring stable 3.3V regulation in space-constrained surface-mount implementations.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range, enabling design flexibility and supply chain optimization.

Substiute Parts

BD33HC5MEFJ-LBH2

Rohm SemiconductorIn Stock: 1431BD33HC5MEFJ-LBH2 Datasheet

Current PartRFQ

BD33HC5MEFJ-ME2

Rohm SemiconductorIn Stock: 3394BD33HC5MEFJ-ME2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BD33HC5MEFJ-LBH2 is determined by strict equivalence across the following critical parameters:

• Output voltage configuration: Fixed 3.3V positive output
• Output current capability: 1.5A minimum
• Input voltage rating: 8V maximum
• Dropout voltage specification: 1.2V @ 1.5A maximum
• Package mechanical compatibility: 8-SOIC with exposed pad, 0.154" width
• Supplier device package designation: 8-HTSOP-J
• Protection feature set: Over-current, over-temperature, and soft-start functionality
• Operating temperature range: -40°C to 105°C minimum
• RoHS and environmental compliance: ROHS3 Compliant

The BD33HC5MEFJ-ME2 qualifies as a parametric equivalent substitute, maintaining identical electrical specifications and mechanical packaging while offering automotive-grade qualification (AEC-Q100 series designation).

Parameter Comparison

Engineering Selection Recommendations

Both the BD33HC5MEFJ-LBH2 and BD33HC5MEFJ-ME2 are active production parts from Rohm Semiconductor with full ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts depends on application requirements:

The BD33HC5MEFJ-LBH2 is suitable for general industrial and consumer applications requiring standard-grade linear regulation at 3.3V, 1.5A output.

The BD33HC5MEFJ-ME2 carries automotive-grade qualification under the AEC-Q100 standard, making it appropriate for automotive and mission-critical applications where enhanced reliability documentation and qualification testing are required. This variant maintains identical electrical performance while providing additional process and quality assurance certifications.

Both parts are pin-compatible and footprint-compatible, enabling direct substitution in PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can BD33HC5MEFJ-ME2 be used as a direct replacement for BD33HC5MEFJ-LBH2?

A: Yes. Both parts share identical electrical specifications, output voltage (3.3V fixed), output current (1.5A), input voltage rating (8V maximum), dropout voltage (1.2V @ 1.5A), and package configuration (8-HTSOP-J). Pin-to-pin and footprint compatibility is complete, enabling direct substitution without circuit or PCB modifications.

Q: What is the difference between these two part numbers?

A: The primary difference is series designation. The BD33HC5MEFJ-ME2 is qualified to the AEC-Q100 automotive standard, indicating enhanced reliability testing and automotive-grade quality assurance. The BD33HC5MEFJ-LBH2 is a standard industrial-grade variant. Electrical performance and mechanical packaging are identical.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 105°C), maintain the same dropout voltage specification (1.2V @ 1.5A), and include identical protection features (over-current, over-temperature, soft-start). Thermal performance and current delivery capability are equivalent.

Q: Can these parts be used interchangeably in production?

A: Yes, provided application requirements do not mandate automotive-grade qualification. If AEC-Q100 certification is required, the BD33HC5MEFJ-ME2 must be specified. For applications without automotive qualification requirements, either part meets the electrical and mechanical specifications.

Q: What packaging format is used for these parts?

A: Both parts use the 8-HTSOP-J package, a surface-mount configuration with 8-pin SOIC footprint (0.154" width) and exposed thermal pad. This package is suitable for automated assembly and provides efficient thermal dissipation for the 1.5A output current rating.

Q: Are both parts RoHS compliant?

A: Yes. Both BD33HC5MEFJ-LBH2 and BD33HC5MEFJ-ME2 are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life), meeting environmental and regulatory requirements for industrial and consumer electronics applications.