BMP388 Equivalent & Substitute Parts Reference

Part Overview

The BMP388 is an absolute pressure sensor manufactured by Bosch Sensortec, designed for board mount applications with I2C and SPI digital output interfaces. The device operates across a pressure range of 4.35PSI to 18.13PSI (30kPa to 125kPa) with ±0.007PSI (±0.05kPa) accuracy and supply voltage range of 1.65V to 3.6V. The BMP388 is classified as obsolete product status, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure long-term component availability for new production and legacy system support.

Substiute Parts

BMP388

Bosch SensortecIn Stock: 22397BMP388 Datasheet

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BMP384

Bosch SensortecIn Stock: 21256BMP384 Datasheet

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BMP390

Bosch SensortecIn Stock: 10151BMP390 Datasheet

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LPS22HBTR

STMicroelectronicsIn Stock: 51116LPS22HBTR Datasheet

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LPS22HHTR

STMicroelectronicsIn Stock: 29332LPS22HHTR Datasheet

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LPS25HBTR

STMicroelectronicsIn Stock: 1482LPS25HBTR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BMP388 are selected based on strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Pressure Type: Absolute (all substitutes must match)
• Operating Pressure Range: 4.35PSI ~ 18.13PSI (30kPa ~ 125kPa) or overlapping range
• Output Type: I2C and/or SPI digital interface
• Supply Voltage: 1.65V ~ 3.6V or compatible range
• Mounting Type: Surface Mount
• Package Form Factor: 10-LGA footprint compatibility

Substitute Parts Identified:

Bosch Sensortec Series (Direct Manufacturer Alternatives):

• BMP390: Active product status, identical pressure range, improved accuracy specification, same supply voltage, 10-WFLGA package
• BMP384: Active product status, identical pressure range, improved accuracy specification, same supply voltage, 10-VFLGA package

STMicroelectronics LPS22 Series (Cross-Manufacturer Alternatives):

• LPS22HHTR: Active product status, overlapping pressure range (3.77PSI ~ 18.27PSI), matching accuracy to BMP388, temperature compensated feature, 10-HLGA package
• LPS22HBTR: Active product status, overlapping pressure range (3.77PSI ~ 18.27PSI), higher accuracy tolerance, temperature compensated feature, 10-HLGA package

STMicroelectronics LPS25 Series (Extended Temperature Alternative):

• LPS25HBTR: Active product status, overlapping pressure range (3.77PSI ~ 18.27PSI), superior accuracy (±0.003PSI), extended operating temperature (-30°C ~ 105°C), 10-LLGA package

All substitute parts maintain absolute pressure measurement capability, digital I2C/SPI output, and surface mount termination style required for direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: BMP390

The BMP390 is the preferred direct substitute for the BMP388. Both devices are manufactured by Bosch Sensortec and share identical pressure operating range (4.35PSI ~ 18.13PSI), supply voltage specification (1.65V ~ 3.6V), and package footprint (10-WFLGA 2x2). The BMP390 maintains active product status with established supply chain availability. The BMP390 provides improved accuracy specification (±0.01PSI versus ±0.007PSI) and includes defined operating temperature range (-40°C ~ 85°C). Moisture sensitivity level remains MSL 1 (Unlimited), matching the BMP388 specification. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

Secondary Recommendation: BMP384

The BMP384 offers equivalent functional performance with identical pressure range and supply voltage. The device is manufactured by Bosch Sensortec and maintains active product status. The BMP384 uses a 10-VFLGA package (2x2 footprint) which differs from the BMP388 10-WFLGA package; PCB layout modification is required. The BMP384 specifies MSL 3 (168 Hours) moisture sensitivity, requiring controlled storage conditions compared to the BMP388 MSL 1 specification. All other compliance parameters remain equivalent.

Cross-Manufacturer Alternatives: STMicroelectronics LPS22 Series

The LPS22HHTR and LPS22HBTR devices provide functional substitution with overlapping pressure range (3.77PSI ~ 18.27PSI encompasses the BMP388 operating window). Both devices feature 24-bit digital output resolution and temperature compensation. The LPS22HHTR matches the BMP388 accuracy specification (±0.007PSI). Both LPS22 variants use 10-HLGA package (2x2 footprint) requiring PCB layout evaluation. MSL 3 (168 Hours) moisture sensitivity applies to both devices. These alternatives are suitable when cross-manufacturer qualification is acceptable.

Extended Temperature Alternative: LPS25HBTR

The LPS25HBTR provides superior accuracy (±0.003PSI) and extended operating temperature range (-30°C ~ 105°C) compared to the BMP388. The device uses 10-LLGA package (2.5x2.5 footprint) requiring PCB layout modification. This alternative is specified when extended temperature performance is required. MSL 3 (168 Hours) moisture sensitivity and 24-bit output resolution are provided.

Selection Criteria Summary:

• Pin-compatible, same package: BMP390
• Same manufacturer, package variation acceptable: BMP384
• Cross-manufacturer, performance equivalent: LPS22HHTR or LPS22HBTR
• Extended temperature requirement: LPS25HBTR

All substitute parts maintain ROHS3 compliance and REACH Unaffected status. All devices support I2C and SPI digital interfaces. All devices are surface mount termination style. Inventory availability is confirmed for all recommended substitutes.

Frequently Asked Questions (FAQ)

Q: Can the BMP390 be used as a direct replacement for the BMP388 without PCB modification?

A: Yes. The BMP390 and BMP388 share identical 10-WFLGA (2x2) package footprint and pinout compatibility. No PCB layout changes are required. Both devices operate across 4.35PSI ~ 18.13PSI pressure range with 1.65V ~ 3.6V supply voltage. Firmware integration remains unchanged for I2C and SPI communication protocols.

Q: What is the key difference between BMP384 and BMP390?

A: The primary difference is package form factor. The BMP390 uses 10-WFLGA (2x2) package matching the BMP388 footprint. The BMP384 uses 10-VFLGA (2x2) package requiring PCB layout modification. Both devices provide identical pressure range, supply voltage, and I2C/SPI output. The BMP384 specifies MSL 3 (168 Hours) moisture sensitivity versus BMP390 MSL 1 (Unlimited).

Q: Are STMicroelectronics LPS22 devices compatible with BMP388 applications?

A: The LPS22HHTR and LPS22HBTR provide functional compatibility for absolute pressure measurement within the BMP388 operating range. Both devices support I2C and SPI interfaces and operate across overlapping pressure range (3.77PSI ~ 18.27PSI). The LPS22 series uses 10-HLGA package (2x2 footprint) requiring PCB layout evaluation. Both devices include 24-bit output resolution and temperature compensation features not specified in the BMP388 datasheet.

Q: What is the significance of MSL (Moisture Sensitivity Level) rating?

A: MSL rating defines maximum storage time at specified humidity and temperature conditions before component use. BMP388 specifies MSL 1 (Unlimited), allowing indefinite storage without moisture bake-out. BMP390, BMP384, and all LPS22/LPS25 variants specify MSL 3 (168 Hours), requiring moisture bake-out procedure if storage exceeds 168 hours at uncontrolled humidity. This affects supply chain handling and manufacturing process requirements.

Q: Can LPS25HBTR replace BMP388 in high-temperature applications?

A: The LPS25HBTR extends operating temperature range to -30°C ~ 105°C compared to BMP388 unspecified range and BMP390 -40°C ~ 85°C range. The LPS25HBTR provides superior accuracy (±0.003PSI) and 24-bit output resolution. The device uses 10-LLGA package (2.5x2.5 footprint) requiring PCB layout modification. Selection of LPS25HBTR is appropriate when extended temperature performance is a design requirement.

Q: What compliance certifications apply to all substitute parts?

A: All recommended substitute parts (BMP390, BMP384, LPS22HHTR, LPS22HBTR, LPS25HBTR) maintain ROHS3 compliance and REACH Unaffected status. All devices are classified under ECCN EAR99 export control category. These certifications match the BMP388 compliance profile, ensuring regulatory equivalence for applications requiring environmental and trade compliance documentation.

Q: How do I determine which substitute is appropriate for my application?

A: Evaluate the following parameters in order of priority: (1) Package footprint compatibility with existing PCB layout; (2) Pressure range and accuracy requirements; (3) Operating temperature range; (4) Moisture sensitivity level and storage requirements; (5) Supply voltage compatibility; (6) I2C/SPI interface requirements. The BMP390 is recommended as the primary choice when package compatibility is achievable. Cross-manufacturer alternatives (LPS22 series) are suitable when performance specifications are met and cross-qualification is acceptable.