GHS 12-SME Current Sensor Equivalent & Substitute Parts

Part Overview

The GHS 12-SME is an integrated primary current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications. This Hall Effect, open loop bidirectional sensor operates at 12A rated current with ratiometric voltage output. The device is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. The GHS 12-SME is packaged in 8-SOIC surface mount configuration with RoHS compliance and REACH unaffected status.

Substiute Parts

GHS 12-SME

LEM USA Inc.In Stock: 1172GHS 12-SME Datasheet

Current PartRFQ

GO 20-SME

LEM USA Inc.In Stock: 9088GO 20-SME Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GHS 12-SME is determined by the following critical parameters that must remain compatible:

Package Compatibility: Both main and substitute parts must use 8-SOIC (0.154", 3.90mm Width) surface mount packaging to ensure PCB layout compatibility without redesign.

Electrical Interface: Supply voltage range (4.5V ~ 5.5V) and ratiometric voltage output type must be maintained for circuit integration without modification.

Sensor Technology: Hall Effect technology with bidirectional measurement capability is required for AC/DC current sensing applications.

Single Channel Configuration: The 1-channel architecture must be preserved for direct functional replacement.

Environmental Compliance: RoHS compliance and REACH unaffected status must be maintained for regulatory requirements.

Operating Temperature Range: The -40°C ~ 125°C operating temperature envelope must be supported.

The GO 20-SME qualifies as a substitute based on these parameters. While the current sensing rating differs (20A versus 12A), the GO 20-SME maintains identical package, supply voltage, output type, sensor technology, channel count, and environmental compliance specifications. The higher current rating of the GO 20-SME does not prevent substitution in applications where the GHS 12-SME was used, as the device will operate within its specified range.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The GHS 12-SME is classified as obsolete. The GO 20-SME is active and maintains full manufacturing support, ensuring long-term availability for production and field replacement requirements.

Regulatory Compliance: Both components maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements for new designs and existing applications.

Package Compatibility: Identical 8-SOIC packaging enables direct PCB substitution without layout modification or redesign.

Electrical Interface: Matching supply voltage range (4.5V ~ 5.5V) and ratiometric voltage output ensure circuit compatibility without signal conditioning changes.

Performance Characteristics: The GO 20-SME provides extended frequency bandwidth (DC ~ 300kHz versus DC ~ 100kHz) and faster response time (2µs), offering enhanced performance capability in the same package footprint.

Current Rating Differential: The GO 20-SME 20A rating accommodates applications previously served by the 12A GHS 12-SME. The higher rating does not create incompatibility; it expands the operational envelope.

Frequently Asked Questions (FAQ)

Q: Can the GO 20-SME directly replace the GHS 12-SME on existing PCBs?

A: Yes. Both components use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging. No PCB layout modification is required for physical substitution.

Q: What is the primary difference between these two sensors?

A: The GO 20-SME has a higher current sensing rating (20A versus 12A) and extended frequency bandwidth (DC ~ 300kHz versus DC ~ 100kHz). Both maintain identical supply voltage, output type, and package specifications.

Q: Will the output voltage change if I substitute GO 20-SME for GHS 12-SME?

A: Yes. The sensitivity differs: GHS 12-SME outputs 66.7mV/A while GO 20-SME outputs 40mV/A. For a given current, the GO 20-SME output voltage will be lower. Circuit calibration or signal conditioning adjustment may be required depending on application requirements.

Q: Are both components RoHS compliant?

A: Yes. Both GHS 12-SME and GO 20-SME are RoHS compliant and REACH unaffected, meeting regulatory requirements for EU and global markets.

Q: What is the supply current difference between these sensors?

A: The GHS 12-SME draws maximum 14mA supply current, while the GO 20-SME draws maximum 26mA. Power supply design must accommodate the higher current requirement of the GO 20-SME.

Q: Can I use the GO 20-SME in applications requiring the exact 12A current range?

A: The GO 20-SME operates across its full 20A range. In applications using currents below 12A, the GO 20-SME functions within its specified accuracy and linearity parameters. Output voltage will scale proportionally to the measured current according to its 40mV/A sensitivity.

Q: What is the operating temperature range for both sensors?

A: Both components operate from -40°C to 125°C, providing identical thermal performance for industrial and automotive applications.

Q: Is the GO 20-SME available in the same packaging options as the GHS 12-SME?

A: Both components are supplied in Tape & Reel (TR) packaging in 8-SOIC configuration, ensuring compatibility with automated assembly processes.