TSM104WAID Equivalent & Substitute Parts

Part Overview

The TSM104WAID is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit device in a 16-SOIC surface mount package. This component is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory of 1716 pieces. The TSM104WAID operates across a wide supply voltage range of 3V to 30V and maintains performance across the industrial temperature range of -40°C to 105°C. Identification of equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts long-term availability for new designs and production requirements.

Substiute Parts

TSM104WAID

Texas InstrumentsIn Stock: 1808TSM104WAID Datasheet

Current PartRFQ

TSM104WAIDT

STMicroelectronicsIn Stock: 35680TSM104WAIDT Datasheet

MFR RecommendedRFQ

TSM104WIDT

STMicroelectronicsIn Stock: 18767TSM104WIDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSM104WAID is determined by strict alignment with the following critical parameters:

Core Substitution Criteria:

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

Acceptable Parameter Variations:

• Current - Input Bias: May vary within the range of 20 nA to 30 nA
• Voltage - Input Offset: May vary within the range of 500 µV to 1 mV
• Voltage - Supply Span (Max): May extend to 32 V (exceeds minimum requirement of 30 V)
• Packaging Format: Tube or Tape & Reel (TR) are both acceptable
• Product Status: Active status is preferred over Last Time Buy

The substitute parts TSM104WAIDT and TSM104WIDT meet all core substitution criteria and fall within acceptable parameter variations. Both are manufactured by STMicroelectronics and maintain identical mechanical and electrical compatibility with the TSM104WAID.

Parameter Comparison

Engineering Selection Recommendations

TSM104WAIDT Selection: The TSM104WAIDT is suitable for applications requiring direct substitution of the TSM104WAID. This part maintains Active product status, ensuring continued availability and supply chain stability. The TSM104WAIDT exhibits lower input bias current (20 nA versus 30 nA), which may provide improved performance in high-impedance input circuits. The maximum supply voltage extends to 32V, providing additional operational margin. Moisture sensitivity level increases from MSL 1 to MSL 3, requiring storage and handling protocols appropriate for 168-hour moisture exposure limits. Both parts maintain ROHS3 compliance and identical mechanical compatibility.

TSM104WIDT Selection: The TSM104WIDT is suitable for applications where the TSM104WAID substitution is required and input offset voltage tolerance permits 1 mV specification. This part maintains Active product status with equivalent supply chain advantages. The TSM104WIDT shares identical slew rate, gain bandwidth product, and output current specifications with the main part. Input bias current is reduced to 20 nA. Maximum supply voltage extends to 32V. Moisture sensitivity level is MSL 3 (168 Hours). ROHS3 compliance is maintained.

Compliance and Certification: Both substitute parts maintain ROHS3 compliance and REACH Unaffected status, consistent with the main part. ECCN classification remains EAR99 for all three parts. HTSUS code 8542.33.0001 applies uniformly across all parts.

Frequently Asked Questions (FAQ)

Q1: Can TSM104WAIDT and TSM104WIDT be used interchangeably with TSM104WAID in existing designs?

A: Both substitute parts maintain identical package geometry (16-SOIC, 0.154" width, 3.90mm), mounting type (Surface Mount), and core electrical specifications (slew rate, gain bandwidth product, output current). Designs utilizing the TSM104WAID can accommodate either substitute part without PCB modification. However, the increased moisture sensitivity level (MSL 3 versus MSL 1) requires verification of storage and assembly process compatibility.

Q2: What is the significance of the input bias current difference between TSM104WAID (30 nA) and the substitute parts (20 nA)?

A: The substitute parts exhibit lower input bias current, which reduces input offset current effects in high-impedance input circuits. This represents an improvement over the main part specification. Applications with input impedances below 1 MΩ will experience negligible impact from this parameter difference.

Q3: How does the voltage input offset specification difference between TSM104WAIDT (500 µV) and TSM104WIDT (1 mV) affect circuit design?

A: The TSM104WIDT exhibits twice the input offset voltage specification. In precision analog circuits requiring offset voltage below 1 mV, the TSM104WAIDT is the appropriate selection. For general-purpose applications with offset voltage tolerance of 1 mV or greater, the TSM104WIDT is suitable.

Q4: What is the impact of the maximum supply voltage increase from 30V (TSM104WAID) to 32V (substitute parts)?

A: The extended maximum supply voltage specification provides additional operational margin and does not restrict compatibility. Designs operating at or below 30V supply voltage experience no impact. Designs requiring operation above 30V can utilize the substitute parts.

Q5: How does the Moisture Sensitivity Level (MSL) change from 1 to 3 affect component handling?

A: MSL 1 (Unlimited) permits indefinite storage without moisture exposure controls. MSL 3 (168 Hours) requires that components be stored in controlled humidity environments and used within 168 hours of package opening. Assembly processes must include appropriate baking procedures if storage time exceeds 168 hours. Verify that manufacturing and assembly facilities maintain MSL 3 compliance protocols.

Q6: Are there packaging format differences between the main part and substitute parts?

A: The TSM104WAID is supplied in Tube packaging. The TSM104WAIDT and TSM104WIDT are supplied in Tape & Reel (TR) format. Both packaging formats are compatible with automated assembly equipment. Tube format is suitable for manual assembly or small-volume production. Tape & Reel format is optimized for high-volume automated assembly.

Q7: What is the significance of the Last Time Buy status for the TSM104WAID?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TSM104WAID. Existing inventory of 1716 pieces represents the final available supply. New designs should incorporate the TSM104WAIDT or TSM104WIDT to ensure long-term component availability and supply chain continuity.