EL2126CS-T13 Equivalent & Substitute Parts

Part Overview

The EL2126CS-T13 is a voltage feedback amplifier manufactured by Renesas Electronics Corporation, housed in an 8-SOIC surface mount package. This linear amplifier integrated circuit contains a single amplification circuit designed for general-purpose voltage feedback applications. The device operates across a supply voltage range of 5V to 30V with an operating temperature range of -40°C to 85°C.

The EL2126CS-T13 is classified as obsolete. Locating equivalent and substitute components is necessary to support ongoing system maintenance, design updates, and production continuity where this device is specified in existing applications.

Substiute Parts

EL2126CS-T13

Renesas Electronics CorporationIn Stock: 1007EL2126CS-T13 Datasheet

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LM7121IM/NOPB

Texas InstrumentsIn Stock: 1174LM7121IM/NOPB Datasheet

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LM7121IMX/NOPB

Texas InstrumentsIn Stock: 2020LM7121IMX/NOPB Datasheet

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LT1363CS8#TRPBF

Analog Devices Inc.In Stock: 66708LT1363CS8#TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the EL2126CS-T13 are selected based on functional equivalence within the voltage feedback amplifier category. The primary substitution criteria are:

Mechanical Compatibility:

• Package type: 8-SOIC surface mount configuration
• Pin count and footprint: 8-pin SOIC with 0.154" (3.90mm) width

Electrical Compatibility:

• Amplifier topology: Voltage feedback architecture
• Single circuit configuration
• Supply voltage range overlap with the original specification (5V to 30V minimum and maximum)
• Operating temperature range: -40°C to 85°C
• Input and output characteristics suitable for general-purpose amplification

Functional Parameters:

• Slew rate, bandwidth, input bias current, input offset voltage, supply current, and output current capacity determine application suitability
• Substitute parts must operate within the electrical constraints of the original design

The three substitute parts listed—LM7121IM/NOPB, LM7121IMX/NOPB, and LT1363CS8#TRPBF—meet the mechanical and functional requirements for direct substitution in 8-SOIC surface mount applications requiring voltage feedback amplification.

Parameter Comparison

Engineering Selection Recommendations

LM7121IM/NOPB and LM7121IMX/NOPB (Texas Instruments)

Both LM7121 variants are active products with ROHS3 compliance. These devices provide enhanced performance characteristics compared to the obsolete EL2126CS-T13, including significantly higher slew rate (1300V/µs versus 150V/µs) and greater bandwidth (235 MHz versus 135 MHz). The supply voltage range extends to 33V maximum, accommodating the original 30V specification. Operating temperature range matches the original (-40°C to 85°C). The primary trade-off is reduced output current capability (71 mA versus 220 mA). These substitutes are suitable for applications where higher speed performance is acceptable and output current requirements do not exceed 71 mA.

The LM7121IMX/NOPB is supplied in Cut Tape and Digi-Reel packaging with 2000 units in stock. The LM7121IM/NOPB is supplied in Tube packaging with 1156 units in stock.

LT1363CS8#TRPBF (Analog Devices Inc.)

The LT1363CS8#TRPBF is an active product with ROHS3 compliance, part of the C-Load series. This device maintains the 500 µV input offset voltage specification of the original part and provides lower input bias current (0.6 µA versus 7 µA). The supply voltage range extends to 36V maximum. The operating temperature range is 0°C to 70°C, which is narrower than the original specification (-40°C to 85°C). Slew rate (1000V/µs) and bandwidth (70 MHz) are intermediate between the original and LM7121 variants. Output current capability is 60 mA. This substitute is suitable for applications operating within the 0°C to 70°C temperature window where lower input bias current is beneficial.

The LT1363CS8#TRPBF is supplied in Cut Tape and Digi-Reel packaging with 66677 units in stock.

Compliance Considerations

All three substitute parts are ROHS3 compliant, whereas the original EL2126CS-T13 is RoHS non-compliant. Selection of a substitute part may require design documentation updates to reflect compliance status changes. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the LM7121IM/NOPB or LM7121IMX/NOPB be used as direct pin-for-pin replacements for the EL2126CS-T13?

A: Yes. Both LM7121 variants share the 8-SOIC package configuration with identical pin count and footprint (0.154", 3.90mm width). The devices are functionally compatible voltage feedback amplifiers suitable for direct substitution in surface mount applications.

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

A: The electrical specifications are identical. The difference is packaging format: LM7121IM/NOPB is supplied in Tube packaging, while LM7121IMX/NOPB is supplied in Cut Tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Why does the LT1363CS8#TRPBF have a narrower operating temperature range (0°C to 70°C) compared to the original EL2126CS-T13 (-40°C to 85°C)?

A: The LT1363CS8#TRPBF is specified for a different temperature range by the manufacturer. Applications requiring operation below 0°C or above 70°C must use the LM7121 variants or the original part. Temperature range is a critical parameter for environmental compatibility.

Q: The LM7121 variants have lower output current (71 mA) than the EL2126CS-T13 (220 mA). Does this affect substitution?

A: Output current capability must be evaluated against application requirements. If the circuit design requires output current exceeding 71 mA, the LM7121 variants are not suitable. The LT1363CS8#TRPBF provides 60 mA output current. Applications with lower output current demands can use these substitutes without modification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts (LM7121IM/NOPB, LM7121IMX/NOPB, and LT1363CS8#TRPBF) are ROHS3 compliant. The original EL2126CS-T13 is RoHS non-compliant. Substitution may require documentation updates reflecting compliance status changes.

Q: What is the significance of the higher slew rate in the LM7121 variants?

A: Slew rate (1300V/µs for LM7121 versus 150V/µs for EL2126CS-T13) determines the maximum rate of voltage change at the output. Higher slew rate enables faster signal transitions and improved performance in high-frequency applications. Applications sensitive to slew rate limitations must verify compatibility with the substitute part's specifications.

Q: Can the EL2126CS-T13 be used interchangeably with the LT1363CS8#TRPBF in all applications?

A: No. The LT1363CS8#TRPBF has a narrower operating temperature range (0°C to 70°C versus -40°C to 85°C) and lower bandwidth (70 MHz versus 135 MHz). Applications requiring full temperature range operation or higher bandwidth must use the LM7121 variants or the original part.

Q: What inventory levels are available for each substitute part?

A: LM7121IM/NOPB: 1156 units in stock. LM7121IMX/NOPB: 2000 units in stock. LT1363CS8#TRPBF: 66677 units in stock. The LT1363CS8#TRPBF has significantly higher availability.