LPV531MKX Equivalent & Substitute Parts

Part Overview

The LPV531MKX is a general-purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail applications in a compact SOT-23-THIN surface mount package. This device features a single amplifier circuit with a gain bandwidth product of 4.6 MHz and operates across a supply voltage range of 2.7 V to 5.5 V.

The LPV531MKX carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value
Amplifier Type	General Purpose
Number of Circuits	1
Output Type	Rail-to-Rail
Slew Rate	2.5 V/µs
Gain Bandwidth Product	4.6 MHz
Current - Input Bias	0.05 pA
Voltage - Input Offset	1 mV
Current - Supply	425 µA
Current - Output / Channel	24 mA
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C to 85°C
Mounting Type	Surface Mount
Package / Case	SOT-23-6 Thin, TSOT-23-6
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LPV531MKX is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Amplifier type (General Purpose)
Number of circuits (1)
Output configuration (Rail-to-Rail)
Slew rate (2.5 V/µs)
Gain bandwidth product (4.6 MHz)
Input bias current (0.05 pA)
Input offset voltage (1 mV)
Supply current (425 µA)
Output current per channel (24 mA)
Supply voltage range (2.7 V to 5.5 V)
Operating temperature range (-40°C to 85°C)

Mechanical Specifications:

Mounting type (Surface Mount)
Package type (SOT-23-6 Thin / TSOT-23-6)

Regulatory & Compliance:

RoHS status
REACH compliance status
Moisture sensitivity level

Substitute parts must match all electrical and mechanical parameters. Differences in product status, packaging format (bulk vs. tape & reel), or compliance certifications do not prevent substitution when electrical and mechanical specifications are identical.

Parameter Comparison

Parameter	LPV531MKX	LPV531MKX/NOPB
Manufacturer	Texas Instruments	Texas Instruments
Base Product Number	LPV531	LPV531
Amplifier Type	General Purpose	General Purpose
Number of Circuits	1	1
Output Type	Rail-to-Rail	Rail-to-Rail
Slew Rate	2.5 V/µs	2.5 V/µs
Gain Bandwidth Product	4.6 MHz	4.6 MHz
Current - Input Bias	0.05 pA	0.05 pA
Voltage - Input Offset	1 mV	1 mV
Current - Supply	425 µA	425 µA
Current - Output / Channel	24 mA	24 mA
Voltage - Supply Span (Min)	2.7 V	2.7 V
Voltage - Supply Span (Max)	5.5 V	5.5 V
Operating Temperature	-40°C to 85°C	-40°C to 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOT-23-6 Thin, TSOT-23-6	SOT-23-6 Thin, TSOT-23-6
Supplier Device Package	SOT-23-THIN	SOT-23-THIN
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
Packaging Format	Not specified	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

LPV531MKX/NOPB is the direct substitute for LPV531MKX based on complete electrical and mechanical parameter equivalence. All critical specifications—including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature—are identical between the two parts.

The primary distinction between these parts is product status and compliance certification. The LPV531MKX/NOPB carries an active product status from Texas Instruments, whereas the LPV531MKX is obsolete. Additionally, LPV531MKX/NOPB meets ROHS3 compliance requirements, while the original LPV531MKX is RoHS non-compliant.

For new designs or production continuity, LPV531MKX/NOPB is the appropriate selection. The packaging format difference (Tape & Reel for the substitute) does not affect electrical or mechanical compatibility and is a standard supply chain variation.

Frequently Asked Questions (FAQ)

Q: Can LPV531MKX/NOPB be used as a direct replacement for LPV531MKX in existing designs?

A: Yes. All electrical specifications, mechanical dimensions, pin configuration, and operating characteristics are identical. The parts are pin-for-pin and functionally equivalent.

Q: What is the significance of the "/NOPB" suffix in LPV531MKX/NOPB?

A: The "/NOPB" designation indicates the part is supplied in Tape & Reel (TR) packaging format without plumbum (lead-free). This is a packaging and compliance designation that does not affect the electrical or mechanical properties of the device.

Q: Why is the original LPV531MKX marked as obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and production decisions. The LPV531MKX/NOPB remains in active production and serves the same functional requirements.

Q: Are there any compliance differences between LPV531MKX and LPV531MKX/NOPB?

A: Yes. LPV531MKX/NOPB is ROHS3 compliant, while LPV531MKX is RoHS non-compliant. Both parts maintain REACH Unaffected status. For applications subject to RoHS regulations, LPV531MKX/NOPB is the required selection.

Q: Does the Tape & Reel packaging of LPV531MKX/NOPB affect circuit performance?

A: No. Packaging format is a supply chain and handling specification. The electrical and mechanical characteristics of the component itself remain unchanged regardless of whether it is supplied in bulk or Tape & Reel format.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both LPV531MKX and LPV531MKX/NOPB have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Can these parts be used in high-temperature applications?

A: Both parts operate across the temperature range of -40°C to 85°C. Applications requiring operation outside this range require alternative components.

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