TSM104IDT Equivalent & Substitute Parts

Part Overview

The TSM104IDT is a general-purpose operational amplifier integrated circuit manufactured by STMicroelectronics, configured as a 4-circuit amplifier in a 16-SOIC surface mount package. This component is classified as obsolete, indicating that it is no longer in active production. The identification of equivalent and substitute parts is necessary to maintain design continuity, support legacy system maintenance, and ensure component availability for production and repair applications.

Substiute Parts

TSM104IDT

STMicroelectronicsIn Stock: 17330TSM104IDT Datasheet

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TSM104WIDT

STMicroelectronicsIn Stock: 18767TSM104WIDT Datasheet

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TSM104WAID

STMicroelectronicsIn Stock: 1194TSM104WAID Datasheet

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TSM104WAIDR

Texas InstrumentsIn Stock: 3778TSM104WAIDR Datasheet

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TSM104WIDR

Texas InstrumentsIn Stock: 1942TSM104WIDR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSM104IDT is determined by strict equivalence across the following critical parameters:

Functional Equivalence Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 4
• Slew Rate: 0.3 V/µs
• Gain Bandwidth Product: 900 kHz
• Current - Output / Channel: 40 mA
• Voltage - Supply Span: 3 V to 32 V (or compatible range)
• Operating Temperature: -40°C to 105°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Acceptable Parameter Variations:

• Current - Input Bias: 20 nA to 30 nA
• Voltage - Input Offset: 500 µV to 1 mV
• Packaging Format: Tube, Tape & Reel (TR)
• Product Status: Active or Last Time Buy (for obsolete main part)
• Moisture Sensitivity Level: 1 or 3

The substitute parts TSM104WIDT, TSM104WAID, TSM104WAIDR, and TSM104WIDR maintain functional and electrical compatibility with the TSM104IDT while offering different packaging and availability options.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Applications:

The TSM104WIDT (STMicroelectronics, Active status) is the primary substitute for the obsolete TSM104IDT. Both components are manufactured by STMicroelectronics and maintain identical electrical specifications. The TSM104WIDT is supplied in Tape & Reel packaging, which is standard for high-volume manufacturing operations. The difference in Moisture Sensitivity Level (MSL 3 versus MSL 1) requires appropriate handling procedures during storage and assembly but does not affect electrical performance or long-term reliability in standard manufacturing environments.

For Legacy System Maintenance:

The TSM104WAID (STMicroelectronics, Active status) provides an alternative with improved input offset voltage specification (500 µV versus 1 mV). This component is supplied in Tube packaging, suitable for lower-volume repair and maintenance applications. The enhanced input offset voltage characteristic may provide performance benefits in precision analog circuits.

For Extended Supply Chain Options:

The TSM104WAIDR and TSM104WIDR (Texas Instruments, Last Time Buy status) are functionally equivalent alternatives from a different manufacturer. These components are supplied in Tape & Reel packaging and feature MSL 1 rating. The maximum supply voltage specification is 30 V (versus 32 V for STMicroelectronics variants), which is compatible with standard industrial supply ranges. The Last Time Buy status indicates limited future availability; these options are suitable for applications where manufacturer diversification is required but should not be selected for new long-term production commitments.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original TSM104IDT specification.

Frequently Asked Questions (FAQ)

Q: Can the TSM104WIDT directly replace the TSM104IDT in existing designs?

A: Yes. The TSM104WIDT maintains electrical equivalence across all critical parameters including slew rate, gain bandwidth product, supply voltage range, and operating temperature. The primary difference is packaging format (Tape & Reel versus Tube) and Moisture Sensitivity Level. PCB layout and assembly processes remain unchanged.

Q: What is the significance of the Moisture Sensitivity Level difference between TSM104IDT (MSL 1) and TSM104WIDT (MSL 3)?

A: MSL 1 indicates unlimited shelf life without moisture control. MSL 3 requires storage at controlled humidity (≤60% RH) with a maximum shelf life of 168 hours after opening. For manufacturing environments with standard moisture control systems, this difference does not impact component reliability or performance. Proper handling procedures must be followed during storage and assembly.

Q: Are the Texas Instruments variants (TSM104WAIDR, TSM104WIDR) suitable for new production designs?

A: The Texas Instruments variants are functionally equivalent but carry Last Time Buy status, indicating discontinued production. These components are suitable for applications requiring manufacturer diversification or for existing designs already qualified to these parts. For new production designs, the active STMicroelectronics variants (TSM104WIDT or TSM104WAID) are recommended to ensure long-term supply availability.

Q: What is the difference between TSM104WAID and TSM104WIDT?

A: Both are STMicroelectronics products with Active status. The TSM104WAID features improved input offset voltage (500 µV versus 1 mV) and is supplied in Tube packaging. The TSM104WIDT maintains the 1 mV input offset specification and is supplied in Tape & Reel packaging. Selection depends on precision requirements and packaging format needs for the manufacturing process.

Q: Is the 2 V difference in maximum supply voltage (32 V for STMicroelectronics, 30 V for Texas Instruments) significant?

A: For applications operating within the 3 V to 30 V range, both variants are fully compatible. Applications requiring operation above 30 V must use the STMicroelectronics variants (TSM104IDT, TSM104WIDT, or TSM104WAID). Standard industrial power supply designs typically operate within the 30 V maximum, making the Texas Instruments variants suitable for most applications.

Q: Can multiple substitute parts be used interchangeably within the same production batch?

A: Yes, provided the application design is qualified to all selected variants. The electrical equivalence across all critical parameters ensures functional interchangeability. However, manufacturing process documentation should specify approved part numbers to maintain traceability and ensure consistent supply chain management.

Q: What packaging format should be selected for high-volume manufacturing?

A: Tape & Reel (TR) packaging is standard for automated assembly processes and high-volume production. The TSM104WIDT and Texas Instruments variants (TSM104WAIDR, TSM104WIDR) are supplied in Tape & Reel format. Tube packaging (TSM104WAID) is suitable for lower-volume applications or manual assembly processes.