ISL6121LIB-T Equivalent & Substitute Parts

Part Overview

The ISL6121LIB-T is a Power Supply Controller / Single Supply/Current Limiting Controller manufactured by Renesas Electronics Corporation in an 8-SOIC package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The ISL6121LIB-T operates within a supply voltage range of 2.5V to 5.5V and is rated for operating temperatures from -40°C to 85°C in surface mount applications.

Substiute Parts

ISL6121LIB-T

Renesas Electronics CorporationIn Stock: 669ISL6121LIB-T Datasheet

Current PartRFQ

PS10NG-G

Microchip TechnologyIn Stock: 756PS10NG-G Datasheet

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TEA1716T/1,518

NXP USA Inc.In Stock: 916TEA1716T/1,518 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISL6121LIB-T are identified based on the following critical parameters:

• Functional Category: Power Management (PMIC) controllers
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 85°C minimum
• Supply Voltage Compatibility: Overlap or compatibility with 2.5V ~ 5.5V range
• Package Type: SOIC-based surface mount packages

The identified substitutes operate within compatible electrical and thermal specifications. Substitution feasibility is determined by functional equivalence within the power management controller category and compatibility of supply voltage and temperature ratings.

Parameter Comparison

Engineering Selection Recommendations

PS10NG-G (Microchip Technology): This substitute maintains identical operating temperature range (-40°C to 85°C) and SOIC package footprint compatibility. The PS10NG-G is an active product with ROHS3 compliance, providing improved regulatory status compared to the obsolete ISL6121LIB-T. Package dimensions remain compatible with 0.154" width specification. Current supply specification of 400 µA is provided for this device.

TEA1716T/1,518 (NXP USA Inc.): This alternative extends the operating temperature range to -40°C to 150°C, providing enhanced thermal performance. The device is ROHS3 compliant and actively manufactured. The 24-SOIC package (0.295" width) represents a larger footprint than the original 8-SOIC, requiring PCB layout modification. This device is specified for PFC controller applications with discontinuous conduction mode operation.

Both substitutes are active products with current manufacturing status and improved regulatory compliance (ROHS3) compared to the obsolete ISL6121LIB-T.

Frequently Asked Questions (FAQ)

Q: Why is the ISL6121LIB-T classified as obsolete? A: The ISL6121LIB-T is listed with obsolete product status by the manufacturer, indicating discontinued production and limited long-term availability.

Q: Can PS10NG-G be used as a direct replacement for ISL6121LIB-T? A: PS10NG-G operates within the same temperature range (-40°C to 85°C) and uses compatible SOIC package dimensions (0.154" width). Both devices are surface mount PMICs. Functional equivalence must be verified against specific application requirements and pin configuration compatibility.

Q: What is the primary difference between PS10NG-G and TEA1716T/1,518? A: PS10NG-G maintains the 8-SOIC footprint compatibility with the original ISL6121LIB-T, while TEA1716T/1,518 uses a larger 24-SOIC package (0.295" width). TEA1716T/1,518 provides extended operating temperature range to 150°C. Package selection depends on PCB layout constraints and thermal requirements.

Q: Are both substitutes RoHS compliant? A: Yes. Both PS10NG-G and TEA1716T/1,518 are ROHS3 compliant, providing improved regulatory status compared to the RoHS non-compliant ISL6121LIB-T.

Q: What is the moisture sensitivity consideration for these parts? A: ISL6121LIB-T and PS10NG-G both have MSL 1 (Unlimited) rating. TEA1716T/1,518 has MSL 3 (168 Hours), requiring controlled storage and handling procedures within 168 hours of package opening.

Q: Do all three devices share the same supply voltage range? A: ISL6121LIB-T operates at 2.5V ~ 5.5V. PS10NG-G supply voltage is specified as -90V ~ -10V. TEA1716T/1,518 operates at 70 ~ 276 VAC. Voltage compatibility must be confirmed for specific application requirements.