TL103WIDG4 Equivalent & Substitute Parts Reference

Part Overview

The TL103WIDG4 is a general-purpose operational amplifier IC featuring dual circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as discontinued at DiGi Electronics, making equivalent and substitute parts essential for ongoing design support and production continuity. The TL103WIDG4 operates across a wide supply voltage range (3V to 32V) and maintains stable performance across industrial temperature ranges (-40°C to 105°C), making it suitable for general-purpose amplification applications requiring moderate bandwidth and low input bias current characteristics.

Substiute Parts

TL103WIDG4

Texas InstrumentsIn Stock: 947TL103WIDG4 Datasheet

Current PartRFQ

TL103WID

Texas InstrumentsIn Stock: 3334TL103WID Datasheet

MFR RecommendedRFQ

TSM103WID

STMicroelectronicsIn Stock: 5396TSM103WID Datasheet

DirectRFQ

TSM103WIDT

STMicroelectronicsIn Stock: 19344TSM103WIDT Datasheet

DirectRFQ

AS358AMTR-E1

Diodes IncorporatedIn Stock: 300269AS358AMTR-E1 Datasheet

MFR RecommendedRFQ

LM158DT

STMicroelectronicsIn Stock: 52673LM158DT Datasheet

MFR RecommendedRFQ

MC1458IDT

STMicroelectronicsIn Stock: 2200MC1458IDT Datasheet

MFR RecommendedRFQ

TL062ACDT

STMicroelectronicsIn Stock: 3147TL062ACDT Datasheet

MFR RecommendedRFQ

TSM103WAIDT

STMicroelectronicsIn Stock: 55238TSM103WAIDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL103WIDG4 are classified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Package type: 8-SOIC surface mount configuration
• Number of circuits: Dual (2) operational amplifiers
• Supply voltage range: Minimum 3V, maximum 32V or higher
• Input bias current: 20 nA nominal
• Current output per channel: 40 mA or greater
• Mounting type: Surface mount

Acceptable Variation Parameters:

• Slew rate: 0.4 V/µs or higher
• Gain bandwidth product: 900 kHz or higher
• Voltage input offset: Up to 5 mV
• Operating temperature: -40°C to 105°C or extended range
• Supply current: Up to 2.3 mA per channel

Substitutes are grouped into two categories: direct manufacturer equivalents (same base product number with different packaging) and cross-manufacturer alternatives (different manufacturers meeting electrical specifications).

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Manufacturer Equivalents (Preferred):

TL103WID (Texas Instruments) is the manufacturer-recommended substitute for TL103WIDG4. This part maintains identical electrical specifications (0.4 V/µs slew rate, 900 kHz gain bandwidth product, 1 mV input offset) and operates across the same supply voltage range (3V to 32V). The primary difference is packaging format (Tube versus unspecified for the original). TL103WID carries Last Time Buy status, indicating limited future availability. Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited).

Tier 2 - Cross-Manufacturer Active Alternatives:

TSM103WIDT (STMicroelectronics) provides the highest inventory availability (19,319 pcs) among active substitutes. This part maintains 8-SOIC package compatibility and surface mount configuration. However, detailed electrical specifications are not fully provided in the input data. MSL rating is 3 (168 Hours), requiring controlled storage conditions. Product status is Active, ensuring long-term availability.

AS358AMTR-E1 (Diodes Incorporated) is an active general-purpose dual operational amplifier in 8-SOIC package with 300,200 pcs inventory. Electrical parameters align closely: 20 nA input bias current, 2 mV input offset (within acceptable tolerance), 700 µA supply current per channel, and 40 mA output current per channel. Supply voltage range extends to 36V maximum (exceeding TL103WIDG4 specification). Operating temperature range is -40°C to 85°C (5°C narrower than original). ROHS3 compliant with MSL 1 (Unlimited).

LM158DT (STMicroelectronics) is an active automotive-grade general-purpose dual operational amplifier with AEC-Q100 qualification. Electrical specifications exceed minimum requirements: 0.6 V/µs slew rate (50% higher), 1.1 MHz gain bandwidth product (22% higher), 5 mV input offset (within tolerance). Supply voltage range is 3V to 30V (2V lower maximum than original). Operating temperature range is -55°C to 125°C (extended). Inventory is 52,573 pcs. ROHS3 compliant with MSL 1 (Unlimited).

MC1458IDT (STMicroelectronics) is an active general-purpose dual operational amplifier with 2,100 pcs inventory. Electrical specifications show variations: 0.8 V/µs slew rate (100% higher), 1 MHz gain bandwidth product (11% higher), 1 mV input offset (identical), but 2.3 mA supply current per channel (228% higher than original) and 25 mA output current per channel (37.5% lower). Supply voltage minimum is 5V (2V higher than original). Operating temperature range matches original (-40°C to 105°C). ROHS3 compliant with MSL 1 (Unlimited).

Selection Criteria by Application:

For applications requiring exact electrical performance match and lowest power consumption, select TL103WID or AS358AMTR-E1. For automotive or extended temperature applications, select LM158DT. For applications with higher supply current tolerance and higher slew rate requirements, select MC1458IDT. For maximum inventory availability with active product status, select TSM103WIDT or LM158DT.

Frequently Asked Questions (FAQ)

Q1: Can TL103WID directly replace TL103WIDG4 without circuit modification?

A: Yes. TL103WID maintains identical electrical specifications across all critical parameters: 0.4 V/µs slew rate, 900 kHz gain bandwidth product, 20 nA input bias current, 1 mV input offset, 700 µA supply current per channel, and 40 mA output current per channel. Both operate across 3V to 32V supply range and -40°C to 105°C temperature range. The 8-SOIC package and surface mount configuration are identical. Packaging format differs (Tube versus unspecified), but this does not affect electrical performance.

Q2: What are the key differences between AS358AMTR-E1 and the original TL103WIDG4?

A: AS358AMTR-E1 maintains compatibility in package (8-SOIC), mounting type (surface mount), input bias current (20 nA), supply current (700 µA per channel), and output current (40 mA per channel). Differences include: input offset voltage of 2 mV (versus 1 mV, within acceptable tolerance), maximum supply voltage of 36V (versus 32V, providing additional headroom), and operating temperature range of -40°C to 85°C (versus -40°C to 105°C, 5°C narrower at upper limit). Slew rate and gain bandwidth product are not specified for AS358AMTR-E1 in the provided data.

Q3: Is LM158DT suitable for applications requiring the exact -40°C to 105°C temperature range?

A: LM158DT exceeds the original temperature range, operating from -55°C to 125°C. This extended range is suitable for applications requiring the original -40°C to 105°C specification. However, LM158DT has a maximum supply voltage of 30V (versus 32V for TL103WIDG4), which may be a limiting factor in applications requiring the full 32V supply capability. LM158DT includes automotive-grade qualification (AEC-Q100), making it suitable for automotive and industrial applications.

Q4: Why does MC1458IDT show higher supply current (2.3 mA) compared to TL103WIDG4 (700 µA)?

A: MC1458IDT has a supply current specification of 2.3 mA per channel, which is approximately 3.3 times higher than the original TL103WIDG4 at 700 µA per channel. This higher quiescent current consumption may impact power budget in battery-powered or low-power applications. However, MC1458IDT offers higher slew rate (0.8 V/µs) and higher gain bandwidth product (1 MHz), which may be beneficial for applications requiring faster signal processing. Selection should be based on power consumption constraints versus performance requirements.

Q5: What is the significance of MSL (Moisture Sensitivity Level) ratings in the substitute parts?

A: MSL rating indicates moisture sensitivity during storage and handling. TL103WIDG4, TL103WID, and AS358AMTR-E1 have MSL 1 (Unlimited), meaning they can be stored indefinitely without moisture control. TSM103WIDT and TSM103WAIDT have MSL 3 (168 Hours), requiring that the component be used within 168 hours of opening the moisture barrier bag, or be baked to remove absorbed moisture. For applications with extended storage or less controlled warehouse conditions, MSL 1 rated parts are preferred.

Q6: Can TSM103WIDT be used as a direct substitute despite incomplete electrical specifications in the provided data?

A: TSM103WIDT is listed as an active STMicroelectronics product in 8-SOIC package with surface mount configuration, matching the mechanical requirements of TL103WIDG4. However, detailed electrical specifications (slew rate, gain bandwidth product, input offset voltage, supply voltage range) are not provided in the input data. Substitution cannot be confirmed without access to the complete TSM103WIDT datasheet. Verification against application-specific electrical requirements is necessary before selection.

Q7: Which substitute part offers the best long-term availability?

A: LM158DT and AS358AMTR-E1 both have Active product status with high inventory levels (52,573 pcs and 300,200 pcs respectively), indicating strong long-term availability. TSM103WIDT also has Active status with 19,319 pcs inventory. TL103WID has Last Time Buy status, indicating limited future availability. For applications requiring long-term supply assurance, select LM158DT, AS358AMTR-E1, or TSM103WIDT.

Q8: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TL103WID, TSM103WID, TSM103WIDT, AS358AMTR-E1, LM158DT, MC1458IDT) are ROHS3 compliant. All parts also have REACH Unaffected status and ECCN EAR99 classification, matching the original TL103WIDG4 regulatory compliance profile.