TL103WIDRG4 Equivalent & Substitute Parts

Part Overview

The TL103WIDRG4 is a general purpose operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is discontinued at DiGi Electronics but remains available through inventory stock of 1425 pieces. The TL103WIDRG4 operates across a wide supply voltage range of 3V to 32V and is suitable for general purpose amplification applications requiring low input bias current and moderate bandwidth performance.

Due to the discontinued status of the TL103WIDRG4 at primary distributors, equivalent and substitute parts are necessary to ensure design continuity and long-term component availability. Substitute parts maintain functional compatibility through matching electrical characteristics and identical packaging specifications.

Substiute Parts

TL103WIDRG4

Texas InstrumentsIn Stock: 1457TL103WIDRG4 Datasheet

Current PartRFQ

TL103WIDR

Texas InstrumentsIn Stock: 30263TL103WIDR Datasheet

MFR RecommendedRFQ

TSM103WID

STMicroelectronicsIn Stock: 5396TSM103WID Datasheet

DirectRFQ

TSM103WIDT

STMicroelectronicsIn Stock: 19344TSM103WIDT Datasheet

DirectRFQ

ADA4062-2ARZ

Analog Devices Inc.In Stock: 3250ADA4062-2ARZ Datasheet

MFR RecommendedRFQ

AS358MTR-E1

Diodes IncorporatedIn Stock: 264218AS358MTR-E1 Datasheet

MFR RecommendedRFQ

LM258DT

STMicroelectronicsIn Stock: 125329LM258DT Datasheet

MFR RecommendedRFQ

MC33172VDR2G

onsemiIn Stock: 2433MC33172VDR2G Datasheet

MFR RecommendedRFQ

TSM103WAIDT

STMicroelectronicsIn Stock: 55238TSM103WAIDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL103WIDRG4 is determined by the following critical parameters that must be matched or exceeded:

Primary Matching Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — mandatory for mechanical compatibility
• Number of Circuits: 2 — functional requirement
• Amplifier Type: General Purpose — application category
• Mounting Type: Surface Mount — assembly compatibility

Electrical Compatibility Criteria:

• Voltage - Supply Span (Min): 3V minimum — lower supply voltage limit
• Voltage - Supply Span (Max): 32V maximum — upper supply voltage limit
• Current - Input Bias: 20 nA — input impedance characteristic
• Current - Output / Channel: 40 mA — output drive capability
• Operating Temperature: -40°C to 105°C — thermal operating range

Compliance Requirements:

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

Substitute parts are grouped into two categories: direct manufacturer equivalents from Texas Instruments with identical electrical specifications, and cross-manufacturer alternatives that maintain functional compatibility within the specified electrical and thermal parameters.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 — Direct Manufacturer Equivalent (Recommended Primary Substitute):

The TL103WIDR from Texas Instruments is the recommended primary substitute. This part maintains identical electrical specifications to the TL103WIDRG4, including slew rate (0.4V/µs), gain bandwidth product (900 kHz), input bias current (20 nA), and supply voltage range (3V to 32V). The TL103WIDR is in active product status with significantly higher inventory availability (30200 pieces) and is available in Cut Tape and Digi-Reel packaging formats. Both parts share the same base product number (TL103) and are fully compatible at the functional and mechanical level.

Tier 2 — STMicroelectronics Alternatives:

The TSM103WID, TSM103WIDT, and TSM103WAIDT from STMicroelectronics provide functional substitution with identical 8-SOIC packaging. These parts are in active product status with substantial inventory availability (5300 to 55200 pieces). The TSM103WIDT and TSM103WAIDT feature MSL rating of 3 (168 Hours), which requires controlled moisture handling during storage and assembly compared to the MSL 1 rating of the original part. Selection among these variants depends on packaging requirements (Tube versus Cut Tape & Digi-Reel) and moisture sensitivity level tolerance.

Tier 3 — Cross-Manufacturer General Purpose Alternatives:

The AS358MTR-E1 from Diodes Incorporated and LM258DT from STMicroelectronics provide general purpose amplifier substitution with matching dual-circuit configuration and 8-SOIC packaging. Both maintain the 20 nA input bias current specification and 40 mA output current per channel. The AS358MTR-E1 offers the highest inventory availability (264200 pieces) and extended supply voltage range to 36V. The LM258DT provides identical operating temperature range (-40°C to 105°C) and MSL 1 rating. The AS358MTR-E1 operates to 85°C maximum, which may limit use in high-temperature applications.

Tier 4 — Enhanced Performance Alternatives:

The MC33172VDR2G from onsemi provides improved performance characteristics including higher slew rate (2.1V/µs), higher gain bandwidth product (1.8 MHz), and extended supply voltage range to 44V. This part is suitable for applications requiring higher bandwidth or wider supply voltage tolerance. The ADA4062-2ARZ from Analog Devices Inc. features J-FET input technology with significantly lower input bias current (2 pA) and higher slew rate (3.3V/µs), suitable for precision applications. However, the ADA4062-2ARZ requires minimum supply voltage of 8V, which restricts use in 3V to 8V supply applications.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original TL103WIDRG4. Moisture sensitivity level varies across alternatives; parts with MSL 1 rating (TL103WIDR, TSM103WID, LM258DT, MC33172VDR2G, ADA4062-2ARZ) require no special moisture control, while parts with MSL 3 rating (TSM103WIDT, AS358MTR-E1, TSM103WAIDT) require controlled storage at 30% relative humidity or lower and baking before reflow soldering.

Frequently Asked Questions (FAQ)

Q: Can the TL103WIDR be used as a direct replacement for the TL103WIDRG4?

A: Yes. The TL103WIDR is a direct functional equivalent with identical electrical specifications, including slew rate, gain bandwidth product, input bias current, and supply voltage range. Both parts use the same 8-SOIC package and are manufactured by Texas Instruments. The primary difference is product status: TL103WIDR is active with higher inventory availability, while TL103WIDRG4 is discontinued.

Q: What is the difference between the TSM103WID and TSM103WIDT?

A: Both parts are STMicroelectronics amplifiers in 8-SOIC packaging with identical functional specifications. The primary difference is packaging format: TSM103WID is supplied in Tube packaging, while TSM103WIDT is supplied in Cut Tape and Digi-Reel format. Additionally, TSM103WIDT has MSL rating of 3 (168 Hours), requiring controlled moisture handling, compared to TSM103WID with MSL 1 (Unlimited).

Q: Can I use the ADA4062-2ARZ in place of the TL103WIDRG4 in all applications?

A: The ADA4062-2ARZ provides enhanced performance with lower input bias current (2 pA versus 20 nA) and higher slew rate (3.3V/µs versus 0.4V/µs). However, it requires minimum supply voltage of 8V, which restricts its use in applications operating below 8V. The original TL103WIDRG4 operates from 3V minimum. Verify your application's supply voltage requirements before substitution.

Q: Why does the AS358MTR-E1 have higher inventory availability than other alternatives?

A: The AS358MTR-E1 from Diodes Incorporated is a widely used general purpose dual operational amplifier with 264200 pieces in stock. This high inventory reflects broad market demand for this device across multiple applications. The AS358 base product is a standard industry component available from multiple manufacturers.

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

A: MSL rating indicates the maximum time a component can be exposed to ambient conditions (30% relative humidity or lower) before requiring baking. MSL 1 (Unlimited) parts like the TL103WIDR require no moisture control. MSL 3 (168 Hours) parts like the TSM103WIDT must be baked at 125°C for 24 hours if exposed to ambient conditions for more than 168 hours before soldering. Select MSL 1 parts for simplified handling unless inventory constraints require MSL 3 alternatives.

Q: Is the MC33172VDR2G suitable for low-voltage applications?

A: Yes. The MC33172VDR2G operates from 3V minimum supply voltage, matching the TL103WIDRG4 specification. It provides enhanced performance with higher slew rate (2.1V/µs) and gain bandwidth product (1.8 MHz), making it suitable for applications requiring improved bandwidth while maintaining low-voltage operation capability.

Q: Can I mix different substitute parts in the same design?

A: All listed substitute parts maintain identical 8-SOIC packaging and dual-circuit configuration, allowing mechanical interchangeability on the PCB. However, electrical performance differences (slew rate, bandwidth, input offset voltage) may affect circuit behavior. Verify that all substitute parts meet your specific application's electrical requirements before mixing different manufacturers or part numbers in production designs.

Q: What packaging options are available for the TL103WIDR?

A: The TL103WIDR is available in Cut Tape (CT) and Digi-Reel packaging formats, providing flexibility for both manual assembly and automated tape-and-reel handling. This contrasts with the original TL103WIDRG4, which had limited packaging availability due to discontinued status.