MCP624-E/SL Equivalent & Substitute Parts

Part Overview

The MCP624-E/SL is a general purpose operational amplifier manufactured by Microchip Technology, featuring four independent circuits in a 14-SOIC surface mount package. This rail-to-rail amplifier operates across a 2.5V to 5.5V supply range with a slew rate of 10V/µs and 20 MHz gain bandwidth product. The device is actively produced and ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained within the specified parameter ranges. The following alternatives provide functional equivalence for applications requiring general purpose amplification in compact form factors.

Key Parameters

Parameter	Value	Unit
Number of Circuits	4	—
Amplifier Type	General Purpose	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40°C ~ 125°C	—
Slew Rate	10	V/µs
Gain Bandwidth Product	20	MHz
Current - Output / Channel	70	mA
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the MCP624-E/SL is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use the 14-SOIC (0.154", 3.90mm Width) package with surface mount technology to ensure direct PCB footprint compatibility.

Electrical Compatibility: Substitute parts must maintain four independent circuits with rail-to-rail output capability. Supply voltage range must encompass or overlap the 2.5V to 5.5V specification. Operating temperature range must support the -40°C to 125°C requirement or be suitable for the intended application temperature window.

Performance Parameters: Slew rate, gain bandwidth product, input bias current, input offset voltage, and output current per channel are secondary selection criteria. Parts with lower performance in these areas may be suitable for applications with reduced bandwidth or slew rate requirements. Parts with higher performance provide enhanced capability.

The following substitute parts meet the primary mechanical and electrical compatibility criteria:

Direct Equivalents (14-SOIC Package, General Purpose or CMOS Type):

LMV344ID (CMOS, Last Time Buy status)
LMV344IDR (CMOS, Active status)
LMV324Q1MAX/NOPB (General Purpose, Automotive qualified)
LMV324Q3MA/NOPB (General Purpose, Automotive qualified)
NCV20034DR2G (General Purpose, Active status)

Alternative Package Equivalents (14-SOP Package):

BU7244F-E2 (CMOS, Rohm Semiconductor)
LMR934F-GE2 (General Purpose, Rohm Semiconductor)

Parameter Comparison

Parameter	MCP624-E/SL	LMV344ID	LMV344IDR	LMV324Q1MAX/NOPB	LMV324Q3MA/NOPB	NCV20034DR2G	BU7244F-E2	LMR934F-GE2
Manufacturer	Microchip	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	onsemi	Rohm	Rohm
Number of Circuits	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	CMOS	CMOS	General Purpose	General Purpose	General Purpose	CMOS	General Purpose
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOP (0.173", 4.40mm)	14-SOP (0.173", 4.40mm)
Voltage - Supply Span (Min)	2.5 V	2.5 V	2.5 V	2.7 V	2.7 V	1.7 V	1.8 V	1.8 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.0 V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C
Slew Rate	10 V/µs	1 V/µs	1 V/µs	1 V/µs	1 V/µs	8 V/µs	0.4 V/µs	0.35 V/µs
Gain Bandwidth Product	20 MHz	1 MHz	1 MHz	1 MHz	1 MHz	7 MHz	900 kHz	1.4 MHz
Current - Input Bias	5 pA	1 pA	1 pA	15 nA	15 nA	1 pA	1 pA	5 nA
Voltage - Input Offset	200 µV	250 µV	250 µV	1.7 mV	1.7 mV	500 µV	1 mV	1 mV
Current - Output / Channel	70 mA	113 mA	113 mA	160 mA	160 mA	96 mA	12 mA	90 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Last Time Buy	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (14-SOIC Package):

LMV344IDR and LMV344ID are CMOS amplifiers with identical package dimensions and pinout to the MCP624-E/SL. Both devices support the full -40°C to 125°C temperature range and 2.5V to 5.5V supply voltage specification. LMV344IDR maintains Active product status with 7,346 units in stock, while LMV344ID is designated Last Time Buy status. These parts provide lower input bias current (1 pA) and comparable output current capability (113 mA per channel).

LMV324Q1MAX/NOPB and LMV324Q3MA/NOPB are general purpose amplifiers from Texas Instruments with AEC-Q100 automotive qualification. Both support the full operating temperature and supply voltage range. These parts provide higher output current per channel (160 mA) and are suitable for automotive applications requiring qualification documentation. LMV324Q1MAX/NOPB has significantly higher inventory (50,300 units).

NCV20034DR2G from onsemi is a general purpose amplifier with Active status and 4,347 units in stock. This part supports the full -40°C to 125°C temperature range and provides 8V/µs slew rate with 7 MHz gain bandwidth product, offering performance between the MCP624-E/SL and lower-bandwidth alternatives.

Alternative Package Substitutes (14-SOP Package):

BU7244F-E2 (Rohm Semiconductor) and LMR934F-GE2 (Rohm Semiconductor) use 14-SOP packaging with slightly larger dimensions (0.173", 4.40mm width versus 0.154", 3.90mm). These parts require PCB layout modification and are not direct pin-compatible. Both operate at reduced maximum temperature (-40°C to 85°C) compared to the MCP624-E/SL specification. BU7244F-E2 is CMOS type with 5,200 units in stock. LMR934F-GE2 is general purpose type with 3,301 units in stock and supports 1.8V to 5V supply range.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection should prioritize parts with Active product status for long-term availability. LMV324Q1MAX/NOPB offers the highest inventory level and automotive qualification if required by application specifications.

Frequently Asked Questions (FAQ)

Q: Can LMV344IDR directly replace MCP624-E/SL on existing PCBs?

A: Yes. LMV344IDR uses identical 14-SOIC (0.154", 3.90mm) packaging and pinout. No PCB layout modification is required. Both devices are surface mount with four circuits and rail-to-rail output. Electrical performance differs in slew rate (1V/µs versus 10V/µs) and gain bandwidth product (1 MHz versus 20 MHz), which may affect high-frequency applications.

Q: What is the difference between CMOS and General Purpose amplifier types in the substitute list?

A: CMOS amplifiers (LMV344ID, LMV344IDR, BU7244F-E2) feature extremely low input bias current (1 pA) and are optimized for high-impedance input applications. General Purpose amplifiers (LMV324Q1MAX/NOPB, LMV324Q3MA/NOPB, NCV20034DR2G, LMR934F-GE2) provide balanced performance across multiple parameters. Selection depends on application input impedance requirements and signal source characteristics.

Q: Why do BU7244F-E2 and LMR934F-GE2 have different package dimensions?

A: These Rohm Semiconductor parts use 14-SOP packaging (0.173", 4.40mm width) versus the standard 14-SOIC (0.154", 3.90mm width) of the MCP624-E/SL. The SOP package is slightly wider and requires PCB footprint redesign. These parts are not recommended for direct substitution on existing boards without layout verification.

Q: Which substitute part has the highest output current capability?

A: LMV324Q1MAX/NOPB and LMV324Q3MA/NOPB both provide 160 mA per channel output current, exceeding the MCP624-E/SL specification of 70 mA. These parts are suitable for applications requiring higher load driving capability.

Q: Are automotive-qualified substitutes available?

A: Yes. LMV324Q1MAX/NOPB and LMV324Q3MA/NOPB both carry AEC-Q100 automotive qualification and support the full -40°C to 125°C operating temperature range. These parts are suitable for automotive applications requiring qualification documentation.

Q: What is the inventory status of each substitute part?

A: LMV324Q1MAX/NOPB has the highest inventory at 50,300 units. LMV344IDR has 7,346 units. NCV20034DR2G has 4,347 units. BU7244F-E2 has 5,200 units. LMR934F-GE2 has 3,301 units. LMV344ID has 1,889 units and is designated Last Time Buy status.

Q: Can I use NCV20034DR2G in applications requiring 125°C operation?

A: Yes. NCV20034DR2G supports the full -40°C to 125°C operating temperature range specified for the MCP624-E/SL. This part is suitable for high-temperature applications.

Q: What performance trade-offs occur when substituting with lower slew rate parts?

A: Parts with lower slew rate (BU7244F-E2 at 0.4V/µs, LMR934F-GE2 at 0.35V/µs) are unsuitable for applications requiring fast transient response or high-frequency signal amplification. These parts are optimized for low-power, low-frequency applications. Applications with bandwidth requirements below 1 MHz are compatible with these alternatives.

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