SFN08A1002CBQLF7 Equivalent & Substitute Parts

Part Overview

The SFN08A1002CBQLF7 is a 4-resistor isolated network array manufactured by TT Electronics/BI, featuring 10kΩ resistors with ±0.25% tolerance and 100mW power per element. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across -55°C to 125°C with ±25ppm/°C temperature coefficient and is packaged in an 8-DFN exposed pad surface mount configuration.

Substiute Parts

SFN08A1002CBQLF7

TT Electronics/BIIn Stock: 996SFN08A1002CBQLF7 Datasheet

Current PartRFQ

ORNTA1002AT1

Vishay Dale Thin FilmIn Stock: 23998ORNTA1002AT1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFN08A1002CBQLF7 is determined by the following critical parameters:

• Resistance Value: 10kΩ (exact match required)
• Number of Resistors: 4 isolated elements
• Circuit Type: Isolated configuration
• Power Rating: 100mW per element minimum
• Temperature Coefficient: ±25ppm/°C or better
• Operating Temperature Range: -55°C to 125°C minimum
• Tolerance: ±0.25% or better
• Resistor Matching Ratio: ±0.05% or better
• Resistor-Ratio-Drift: ±5ppm/°C or better
• Pin Count: 8 pins
• Mounting: Surface mount configuration

The ORNTA1002AT1 meets all critical electrical parameters and maintains functional equivalence despite package geometry differences (8-SOIC versus 8-DFN). Both components deliver identical electrical performance within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The ORNTA1002AT1 is the qualified substitute for the obsolete SFN08A1002CBQLF7. Selection is based on:

• Product Status: The original part is obsolete; the substitute is active and maintains full production availability.
• Electrical Equivalence: All critical electrical parameters match or exceed the original specification. The ORNTA1002AT1 provides superior tolerance (±0.1% versus ±0.25%), ensuring tighter performance margins.
• Compliance: Both components maintain REACH Unaffected status and EAR99 classification, with identical moisture sensitivity levels (MSL 1).
• Package Consideration: The substitute uses 8-SOIC packaging instead of 8-DFN. PCB layout modification is required to accommodate the different footprint geometry (4.93mm x 3.99mm versus 4.00mm x 4.00mm) and height (1.73mm seated height).

Frequently Asked Questions (FAQ)

Q: Can the ORNTA1002AT1 directly replace the SFN08A1002CBQLF7 without circuit modification?

A: Electrical substitution is direct. However, PCB layout changes are necessary due to package differences. The 8-SOIC footprint differs from the 8-DFN exposed pad configuration in both lateral dimensions and seated height.

Q: What are the key differences between these parts?

A: The primary differences are package type (8-SOIC versus 8-DFN) and tolerance specification (±0.1% versus ±0.25%). All other electrical parameters, including resistance value, power rating, temperature coefficient, and operating range, are identical.

Q: Is the ORNTA1002AT1 suitable for applications requiring the original ±0.25% tolerance?

A: Yes. The ORNTA1002AT1 exceeds the tolerance requirement with ±0.1% specification, providing superior accuracy for precision applications.

Q: Are there compliance or regulatory concerns with this substitution?

A: No. Both components share identical REACH and ECCN classifications (REACH Unaffected, EAR99), with matching moisture sensitivity levels (MSL 1).

Q: What is the impact of the package change on thermal performance?

A: The 8-SOIC package has a maximum seated height of 1.73mm compared to the 8-DFN configuration. Thermal characteristics remain equivalent for the specified operating temperature range (-55°C to 125°C).