TL051ACP Equivalent & Substitute Parts

Part Overview

The TL051ACP is a J-FET input operational amplifier manufactured by Texas Instruments in an 8-DIP through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TL051ACP serves applications requiring low input bias current and low input offset voltage characteristics typical of J-FET amplifier designs. Identification of equivalent and substitute parts is necessary due to product status and inventory constraints.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	20	V/µs
Gain Bandwidth Product	3.1	MHz
Current - Input Bias	30	pA
Voltage - Input Offset	350	µV
Current - Supply	2.7	mA
Current - Output / Channel	80	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TL051ACP is determined by electrical and mechanical compatibility across the following critical parameters:

Primary Substitution Criteria:

Amplifier Type (J-FET or General Purpose)
Number of Circuits (1 circuit requirement)
Package / Case (8-DIP through-hole form factor)
Operating Temperature Range (0°C to 70°C minimum)
Supply Voltage Compatibility (overlap within 10V to 30V range)
RoHS3 Compliance

Secondary Compatibility Parameters:

Slew Rate (20V/µs baseline)
Gain Bandwidth Product (3.1 MHz baseline)
Input Bias Current (30 pA baseline)
Input Offset Voltage (350 µV baseline)
Supply Current (2.7 mA baseline)
Output Current Capability (80 mA baseline)

Substitute parts are grouped into two categories: J-FET amplifiers maintaining the original amplifier type, and general-purpose amplifiers offering enhanced performance characteristics with compatible package and supply specifications.

Parameter Comparison

Parameter	TL051ACP	TL051CP	AD843JNZ	AD843KNZ	LT1055CN8#PBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	J-FET	J-FET	General Purpose	General Purpose	J-FET
Number of Circuits	1	1	1	1	1
Slew Rate (V/µs)	20	20	250	250	12
Gain Bandwidth Product (MHz)	3.1	3.1	34	34	4.5
Current - Input Bias (pA)	30	30	50	40	30
Voltage - Input Offset (µV)	350	590	1000	500	120
Current - Supply (mA)	2.7	2.7	12	12	2.8
Current - Output / Channel (mA)	80	—	50	50	—
Voltage - Supply Span (Min) (V)	10	10	9	9	10
Voltage - Supply Span (Max) (V)	30	30	36	36	36
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TL051CP (Texas Instruments)

The TL051CP is the primary equivalent substitute for the TL051ACP. Both devices share identical J-FET amplifier architecture, electrical performance specifications, and 8-DIP package configuration. The TL051CP maintains Active product status with 1860 units in stock, providing long-term availability. The only electrical variance is input offset voltage (590 µV versus 350 µV), which remains within acceptable tolerance for most J-FET amplifier applications. RoHS3 compliance and identical supply voltage specifications ensure direct functional compatibility.

LT1055CN8#PBF (Analog Devices Inc.)

The LT1055CN8#PBF is a J-FET amplifier substitute offering enhanced input offset voltage performance (120 µV) and extended maximum supply voltage (36V versus 30V). This device maintains the same input bias current (30 pA) and similar supply current (2.8 mA). The lower slew rate (12 V/µs) and reduced output current capability (not specified) may impact applications requiring high-speed transient response or high-current output drive. Active product status with 1500 units in stock supports long-term procurement. RoHS3 compliance and through-hole 8-DIP packaging ensure mechanical compatibility.

AD843KNZ (Analog Devices Inc.)

The AD843KNZ is a general-purpose amplifier substitute offering significantly enhanced performance: 250 V/µs slew rate and 34 MHz gain bandwidth product. This device provides superior input offset voltage (500 µV) and lower input bias current (40 pA) compared to the TL051ACP. Supply voltage range extends to 36V maximum. The higher supply current (12 mA) and reduced output current per channel (50 mA) represent trade-offs for enhanced bandwidth performance. Active product status with 2100 units in stock ensures availability. RoHS3 compliance and 8-DIP through-hole packaging maintain mechanical compatibility.

AD843JNZ (Analog Devices Inc.)

The AD843JNZ is a general-purpose amplifier substitute with performance characteristics identical to the AD843KNZ, with the exception of input bias current (50 pA versus 40 pA) and input offset voltage (1 mV versus 500 µV). Enhanced slew rate (250 V/µs) and gain bandwidth product (34 MHz) support high-frequency applications. Active product status with 2900 units in stock provides maximum availability. RoHS3 compliance and 8-DIP through-hole packaging ensure compatibility.

Frequently Asked Questions (FAQ)

Q: Can the TL051CP directly replace the TL051ACP without circuit modification?

A: Yes. The TL051CP is functionally equivalent to the TL051ACP. Both devices are J-FET amplifiers with identical package, pinout, supply voltage range, and operating temperature specifications. The input offset voltage difference (590 µV versus 350 µV) is within typical application tolerances for J-FET amplifier designs.

Q: What is the primary difference between J-FET and general-purpose amplifier substitutes?

A: J-FET amplifiers (TL051CP, LT1055CN8#PBF) feature extremely low input bias current (30 pA) and are optimized for high-impedance signal sources. General-purpose amplifiers (AD843JNZ, AD843KNZ) provide higher slew rates and gain bandwidth products but consume more supply current. Selection depends on application requirements for input impedance and bandwidth.

Q: Are all substitute parts compatible with the original 8-DIP through-hole footprint?

A: Yes. All substitute parts are packaged in 8-DIP (0.300", 7.62mm) through-hole format with identical pinout compatibility. Direct socket substitution is mechanically and electrically feasible.

Q: Which substitute offers the best input offset voltage performance?

A: The LT1055CN8#PBF provides the lowest input offset voltage at 120 µV, compared to 350 µV for the TL051ACP. This device is suitable for precision applications requiring minimal offset drift.

Q: What is the impact of higher slew rate in the AD843 series?

A: The AD843JNZ and AD843KNZ offer 250 V/µs slew rate compared to 20 V/µs in the TL051ACP. This enables faster transient response and higher-frequency signal processing. Applications limited to low-frequency operation do not require this performance enhancement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TL051CP, AD843JNZ, AD843KNZ, LT1055CN8#PBF) are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the TL051ACP.

Q: What supply voltage range is supported across all substitutes?

A: The TL051ACP and TL051CP support 10V to 30V. The AD843 series and LT1055CN8#PBF extend the maximum to 36V. All devices maintain the 10V minimum supply voltage, ensuring compatibility with existing power supply designs.

Q: Can the AD843 series replace the TL051ACP in precision low-noise applications?

A: The AD843 series is suitable for applications where higher bandwidth and slew rate are beneficial. However, the higher input offset voltage (500 µV to 1 mV) and increased supply current (12 mA) may not be optimal for precision low-noise designs. The TL051CP or LT1055CN8#PBF are preferred for such applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message