EL2126CSZ Equivalent & Substitute Parts

Part Overview

The EL2126CSZ is a voltage feedback amplifier manufactured by Renesas Electronics Corporation, housed in an 8-SOIC surface mount package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The EL2126CSZ delivers a slew rate of 150V/µs with a -3dB bandwidth of 135 MHz, supporting supply voltages from 5V to 30V and operating across the industrial temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	EL2126CSZ
Manufacturer	Renesas Electronics Corporation
Category	Linear, Amplifiers
Amplifier Type	Voltage Feedback
Number of Circuits	1
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	150V/µs
-3dB Bandwidth	135 MHz
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the EL2126CSZ is determined by the following critical parameters: amplifier type (voltage feedback), number of circuits (1), package type (8-SOIC surface mount), and electrical operating specifications including supply voltage range, slew rate, bandwidth, and temperature range. All identified substitute parts maintain the same package footprint and mounting technology, ensuring mechanical and electrical compatibility at the board level.

The substitute parts are grouped based on their ability to operate within the supply voltage envelope of 5V to 30V and their performance characteristics relative to the original device. Substitutes must support the industrial temperature range (-40°C to 85°C) and maintain RoHS3 compliance for regulatory consistency.

Parameter Comparison

Parameter	EL2126CSZ	LM7121IM/NOPB	LM7121IMX/NOPB	LT1363CS8#PBF	THS4031ID
Manufacturer	Renesas Electronics	Texas Instruments	Texas Instruments	Analog Devices Inc.	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Last Time Buy
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback
Number of Circuits	1	1	1	1	1
Slew Rate	150V/µs	1300V/µs	1300V/µs	1000V/µs	100V/µs
-3dB Bandwidth	135 MHz	235 MHz	235 MHz	Not Specified	100 MHz
Current - Input Bias	7 µA	5.2 µA	5.2 µA	600 nA	3 µA
Voltage - Input Offset	500 µV	900 µV	900 µV	500 µV	500 µV
Current - Supply	5 mA	5.3 mA	5.3 mA	6.3 mA	8.5 mA
Current - Output / Channel	220 mA	71 mA	71 mA	60 mA	Not Specified
Voltage - Supply Span (Min)	5 V	4.5 V	4.5 V	5 V	9 V
Voltage - Supply Span (Max)	30 V	33 V	33 V	36 V	32 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

LM7121IM/NOPB and LM7121IMX/NOPB are active production devices from Texas Instruments with identical electrical specifications. Both parts support the full supply voltage range of the EL2126CSZ (5V to 30V) and maintain the industrial temperature range (-40°C to 85°C). These devices exhibit superior slew rate (1300V/µs) and bandwidth (235 MHz) performance compared to the original part. Moisture sensitivity is reduced to Level 1 (Unlimited), improving handling and storage characteristics. The LM7121IMX/NOPB variant is available in Cut Tape and Digi-Reel packaging with higher inventory availability (2000 pcs), while the LM7121IM/NOPB is supplied in Tube packaging (1156 pcs).

LT1363CS8#PBF is an active production device from Analog Devices Inc. with C-Load series designation. This part operates within the supply voltage range (5V to 36V) and maintains RoHS3 compliance with Level 1 moisture sensitivity. The operating temperature range is restricted to 0°C to 70°C, which does not cover the full industrial specification of the EL2126CSZ. The LT1363CS8#PBF exhibits higher slew rate (1000V/µs) and lower input bias current (600 nA) but reduced output current capability (60 mA) compared to the original device.

THS4031ID is a Last Time Buy device from Texas Instruments. This part supports the industrial temperature range (-40°C to 85°C) and RoHS3 compliance but has a minimum supply voltage requirement of 9V, which exceeds the EL2126CSZ minimum of 5V. The slew rate (100V/µs) and bandwidth (100 MHz) are lower than the original specification. This device is suitable only for applications with supply voltages of 9V or higher.

For applications requiring full compatibility with the original EL2126CSZ specifications, the LM7121IM/NOPB or LM7121IMX/NOPB are the primary recommendations due to their active production status, complete parameter coverage, and superior performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the LM7121IM/NOPB directly replace the EL2126CSZ in existing designs?

A: Yes. Both devices are housed in 8-SOIC packages with identical footprints and mounting technology. The LM7121IM/NOPB supports the full supply voltage range (4.5V to 33V, which encompasses the EL2126CSZ range of 5V to 30V) and maintains the industrial temperature range (-40°C to 85°C). The LM7121IM/NOPB exhibits superior electrical performance with higher slew rate and bandwidth. No PCB modifications are required.

Q: What is the difference between LM7121IM/NOPB and LM7121IMX/NOPB?

A: Both parts are electrically identical with the same specifications and performance characteristics. The primary difference is packaging: LM7121IM/NOPB is supplied in Tube packaging, while LM7121IMX/NOPB is supplied in Cut Tape and Digi-Reel format. Selection depends on assembly process requirements and inventory management preferences.

Q: Why is the LT1363CS8#PBF not recommended as a primary substitute?

A: The LT1363CS8#PBF has an operating temperature range of 0°C to 70°C, which does not cover the full industrial specification (-40°C to 85°C) of the EL2126CSZ. Additionally, the output current per channel (60 mA) is significantly lower than the original device (220 mA). This part is suitable only for applications operating within the 0°C to 70°C range and with reduced output current requirements.

Q: Is the THS4031ID a viable substitute?

A: The THS4031ID is classified as Last Time Buy, indicating limited future availability. More critically, the minimum supply voltage requirement of 9V exceeds the EL2126CSZ minimum of 5V, restricting its use to applications with 9V or higher supply voltages. For new designs or long-term production, the active LM7121 series is preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (LM7121IM/NOPB, LM7121IMX/NOPB, LT1363CS8#PBF, and THS4031ID) are RoHS3 compliant, maintaining regulatory consistency with the original EL2126CSZ.

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

A: The EL2126CSZ has MSL 3 (168 Hours), requiring controlled storage and handling conditions. All substitute parts have MSL 1 (Unlimited), eliminating moisture sensitivity constraints and reducing handling complexity during manufacturing and storage.

Q: Can the LM7121 series handle higher slew rates than the original EL2126CSZ?

A: Yes. The LM7121IM/NOPB and LM7121IMX/NOPB have a slew rate of 1300V/µs compared to the EL2126CSZ at 150V/µs. This superior performance is beneficial for high-speed signal processing applications but requires circuit design verification to ensure stability and prevent oscillation in existing designs.

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