TL031ID Equivalent & Substitute Parts

Part Overview

The TL031ID is a J-FET input operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a linear amplifier with single-circuit configuration, designed for applications requiring low input bias current and low input offset voltage characteristics. The TL031ID is currently designated as Last Time Buy, indicating discontinued production status. Identification of equivalent substitute parts is necessary to ensure design continuity and procurement availability for ongoing production requirements.

Substiute Parts

TL031ID

Texas InstrumentsIn Stock: 7282TL031ID Datasheet

Current PartRFQ

TL031CDR

Texas InstrumentsIn Stock: 2750TL031CDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL031ID is determined by electrical and mechanical parameter equivalence within the J-FET operational amplifier category. The critical parameters governing substitution are:

Electrical Parameters:

• Amplifier Type: J-FET input configuration
• Number of Circuits: Single circuit (1)
• Slew Rate: 5.1 V/µs
• Gain Bandwidth Product: 1.1 MHz
• Current - Input Bias: 2 pA
• Voltage - Input Offset: 500 µV
• Current - Supply: 217 µA
• Voltage - Supply Span: 10 V to 30 V

Mechanical Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The TL031CDR is identified as a manufacturer-recommended substitute based on identical electrical performance specifications and mechanical compatibility. The primary distinction between these parts is packaging format and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TL031CDR is the manufacturer-recommended substitute for the TL031ID. Both devices share identical electrical specifications and mechanical compatibility, ensuring functional equivalence in circuit applications.

Selection Criteria:

The TL031CDR is suitable for applications where the operating temperature range of 0°C to 70°C satisfies design requirements. This narrower temperature range compared to the TL031ID (-40°C to 85°C) must be evaluated against the intended application environment.

The TL031CDR is supplied in Tape & Reel (TR) packaging format, whereas the TL031ID is supplied in Tube packaging. This distinction affects procurement and assembly processes but does not impact electrical or mechanical performance.

The TL031CDR maintains Active product status with Texas Instruments, ensuring ongoing availability and support. The TL031ID is designated Last Time Buy, confirming the necessity of transition to the substitute part for future procurement.

Both devices maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), satisfying regulatory and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the TL031CDR be used as a direct replacement for the TL031ID in all applications?

A: The TL031CDR is electrically and mechanically equivalent to the TL031ID. Direct substitution is valid provided the application operating temperature range does not exceed 0°C to 70°C. If the application requires operation below 0°C or above 70°C, the TL031CDR is not suitable.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies individual components in a plastic tube, typically used for lower-volume applications or manual assembly. Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, designed for automated pick-and-place assembly processes. Both packaging formats contain identical components with no electrical differences.

Q: Are there any compliance or certification differences between these parts?

A: Both the TL031ID and TL031CDR are ROHS3 compliant, REACH unaffected, and classified as Moisture Sensitivity Level 1 (Unlimited). No compliance or certification differences exist between these parts.

Q: Why is the TL031ID designated as Last Time Buy?

A: Last Time Buy designation indicates that Texas Instruments has discontinued production of this part number. The TL031CDR represents the active product line continuation with identical electrical and mechanical specifications.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: Amplifier Type (J-FET), Number of Circuits (1), Slew Rate (5.1 V/µs), Gain Bandwidth Product (1.1 MHz), Current - Input Bias (2 pA), Voltage - Input Offset (500 µV), Current - Supply (217 µA), and Voltage - Supply Span (10 V to 30 V). All these parameters are identical between the TL031ID and TL031CDR.

Q: Is the 8-SOIC package pinout identical between these parts?

A: Both the TL031ID and TL031CDR use the 8-SOIC (0.154", 3.90mm Width) package. The identical package designation confirms pinout compatibility for direct board-level substitution.

Q: What is the significance of the 2 pA input bias current specification?

A: The 2 pA input bias current is characteristic of J-FET input operational amplifiers, providing extremely low input bias current compared to bipolar input amplifiers. This specification is identical in both the TL031ID and TL031CDR, confirming functional equivalence.