GHS 20-SME Current Sensor Equivalent & Substitute Parts

Part Overview

The GHS 20-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 provides a 20A sensing range with ratiometric voltage output in an 8-SOIC surface mount package.

The GHS 20-SME is classified as obsolete. Locating equivalent or substitute components is necessary for new designs, production continuity, and long-term system support where original inventory is depleted or unavailable.

Substiute Parts

GHS 20-SME

LEM USA Inc.In Stock: 799GHS 20-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 20-SME is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current sensing range: 20A
• Sensor type: Hall Effect
• Output type: Ratiometric, Voltage
• Sensitivity: 40mV/A
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Supply voltage range: 4.5V ~ 5.5V
• Polarization: Bidirectional
• Measurement capability: AC/DC

Allowable Variation Parameters:

• Frequency response (higher frequency capability is acceptable)
• Linearity tolerance (within ±0.3% or better)
• Accuracy tolerance (within ±1.3% or better)
• Current supply maximum (higher values acceptable)
• Response time (faster response acceptable)
• Product status (active status preferred for availability)

The GO 20-SME qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: GO 20-SME

The GO 20-SME is the direct equivalent substitute for the obsolete GHS 20-SME. Both components are manufactured by LEM USA Inc. and share identical electrical and mechanical specifications across all critical parameters: 20A current sensing, 40mV/A sensitivity, ratiometric voltage output, 8-SOIC package, and bidirectional AC/DC measurement capability.

Advantages of GO 20-SME substitution:

The GO 20-SME is classified as active product status, ensuring long-term availability and supply chain continuity. The substitute offers enhanced frequency response (DC ~ 300kHz versus DC ~ 100kHz), providing superior performance margin for high-frequency applications. Response time is specified at 2µs, whereas the GHS 20-SME does not provide this parameter. Current supply requirement increases from 14mA to 26mA, which is acceptable in most circuit designs with standard 5V supply rails.

Linearity and accuracy tolerances of the GO 20-SME (±0.3% and ±1.3% respectively) remain within acceptable engineering margins compared to the GHS 20-SME (±0.25% and ±1.25%). Both components maintain identical operating temperature range (-40°C ~ 125°C), supply voltage specification (4.5V ~ 5.5V), moisture sensitivity level (MSL 3), and regulatory compliance (RoHS, REACH, ECCN EAR99).

Packaging consideration:

The GO 20-SME is supplied in Tape & Reel (TR) packaging, whereas the GHS 20-SME packaging format is not specified. Both use identical 8-SOIC surface mount package geometry, ensuring PCB footprint and reflow soldering compatibility.

Frequently Asked Questions (FAQ)

Q: Can the GO 20-SME directly replace the GHS 20-SME in existing designs?

A: Yes. The GO 20-SME is a direct functional equivalent. Both components share identical current sensing range (20A), sensitivity (40mV/A), output type (ratiometric voltage), package geometry (8-SOIC), and supply voltage specification (4.5V ~ 5.5V). PCB layout and circuit design require no modification. The increased current supply requirement (26mA versus 14mA) must be verified in the power supply design, but this is typically not a constraint in standard 5V supply implementations.

Q: What are the key differences between GHS 20-SME and GO 20-SME?

A: The primary differences are product status and performance specifications. The GHS 20-SME is obsolete; the GO 20-SME is active. The GO 20-SME provides higher frequency response (300kHz versus 100kHz), specified response time (2µs), and higher current supply capability (26mA versus 14mA). Linearity and accuracy tolerances are marginally relaxed (±0.3% and ±1.3% versus ±0.25% and ±1.25%), remaining within acceptable engineering margins.

Q: Are there any compliance or regulatory differences?

A: No. Both components share identical regulatory status: RoHS Compliant, REACH Unaffected, ECCN EAR99, and HTSUS 8542.39.0001. Moisture sensitivity level is identical (MSL 3, 168 Hours). No additional compliance verification is required for substitution.

Q: What is the packaging difference, and does it affect PCB assembly?

A: The GO 20-SME is supplied in Tape & Reel (TR) format for automated assembly. The GHS 20-SME packaging format is not specified. Both use identical 8-SOIC (0.154", 3.90mm Width) surface mount package geometry. PCB footprint, solder pad layout, and reflow soldering parameters are unchanged. Tape & Reel packaging is standard for high-volume production and does not affect component performance or reliability.

Q: Is the GO 20-SME suitable for high-frequency applications?

A: The GO 20-SME supports frequency response up to 300kHz, compared to 100kHz for the GHS 20-SME. This extended frequency capability makes the GO 20-SME suitable for applications requiring measurement of higher-frequency current signals. The 2µs response time specification of the GO 20-SME provides additional performance margin for transient current measurement.

Q: What supply current should be allocated in the power supply design?

A: The GO 20-SME maximum supply current is 26mA. Circuit designs should allocate this value in power supply calculations. This is higher than the GHS 20-SME specification (14mA) but remains well within the capability of standard 5V supply rails used in industrial and consumer electronics applications.

Q: Are there any temperature or environmental limitations?

A: Both components operate across identical temperature range (-40°C ~ 125°C) and moisture sensitivity level (MSL 3, 168 Hours). No additional environmental constraints apply to the GO 20-SME substitution. Standard PCB assembly and storage practices for MSL 3 components apply.