BH18LB1WHFV-TR Equivalent & Substitute Parts

Part Overview

The BH18LB1WHFV-TR is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed for positive fixed 1.8V output at 150mA in a 5-HVSOF surface mount package. This device is classified as not for new designs, indicating it has been superseded in Rohm's product portfolio. Finding equivalent substitute parts is necessary for applications requiring continued supply, design updates, or inventory optimization while maintaining electrical and mechanical compatibility.

Substiute Parts

BH18LB1WHFV-TR

Rohm SemiconductorIn Stock: 53509BH18LB1WHFV-TR Datasheet

Current PartRFQ

BH18PB1WHFV-TR

Rohm SemiconductorIn Stock: 3491BH18PB1WHFV-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BH18LB1WHFV-TR are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or be equivalent:

• Output voltage: 1.8V fixed
• Output current capability: 150mA minimum
• Input voltage rating: 5.5V maximum
• Package type: SOT-665 (5-HVSOF)
• Surface mount configuration
• Operating temperature range: -40°C ~ 85°C
• Output configuration: Positive fixed
• Enable control feature
• Over current and over temperature protection

The BH18PB1WHFV-TR meets all these criteria and is classified as an active product, making it a direct substitute for the BH18LB1WHFV-TR.

Parameter Comparison

Engineering Selection Recommendations

The BH18PB1WHFV-TR is the direct substitute for BH18LB1WHFV-TR based on the following engineering criteria:

Both devices share identical electrical specifications for output voltage, output current, input voltage rating, and operating temperature range. Both are housed in the same SOT-665 package and are surface mount components with identical control and protection features.

The BH18PB1WHFV-TR is classified as an active product, whereas the BH18LB1WHFV-TR is marked as not for new designs. This status difference indicates that Rohm Semiconductor continues to support and manufacture the BH18PB1WHFV-TR for ongoing applications.

Both parts maintain ROHS3 compliance and identical moisture sensitivity levels, ensuring regulatory and environmental compatibility. The BH18PB1WHFV-TR offers improved quiescent current performance (4 µA versus 70 µA) and includes an additional soft start protection feature, providing enhanced performance characteristics while maintaining full backward compatibility.

Frequently Asked Questions (FAQ)

Q: Can BH18PB1WHFV-TR be used as a direct replacement for BH18LB1WHFV-TR?

A: Yes. Both devices have identical output voltage (1.8V), output current (150mA), input voltage rating (5.5V), package type (SOT-665), and operating temperature range (-40°C ~ 85°C). Pin configuration and electrical performance are compatible for direct substitution.

Q: What is the difference in quiescent current between these parts?

A: The BH18LB1WHFV-TR has a quiescent current of 70 µA, while the BH18PB1WHFV-TR has 4 µA. The lower quiescent current in the substitute part results in reduced standby power consumption, which is beneficial for battery-powered or low-power applications.

Q: Are there package or mounting differences?

A: No. Both parts use the SOT-665 package (5-HVSOF) and are surface mount devices. PCB layout and assembly processes remain unchanged.

Q: Why is BH18LB1WHFV-TR marked as not for new designs?

A: This status indicates that Rohm Semiconductor has transitioned this product to end-of-life status. The BH18PB1WHFV-TR is the active replacement and should be used for new designs and ongoing applications.

Q: Are both parts RoHS compliant?

A: Yes. Both BH18LB1WHFV-TR and BH18PB1WHFV-TR are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).

Q: What additional protection does BH18PB1WHFV-TR provide?

A: The BH18PB1WHFV-TR includes soft start protection in addition to over current and over temperature protection. This feature provides smoother output voltage rise during power-up, reducing inrush current and stress on connected circuitry.