RACF164DFT39K2 Equivalent & Substitute Parts

Part Overview

The RACF164DFT39K2 is a 4-resistor isolated network array manufactured by Stackpole Electronics Inc, featuring 39.2k Ohm ±1% resistance elements with 62.5mW power per element rating. This component is designed for automotive-grade applications and carries AEC-Q200 qualification. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

RACF164DFT39K2

Stackpole Electronics IncIn Stock: 891RACF164DFT39K2 Datasheet

Current PartRFQ

RAVF164DFT39K0

Stackpole Electronics IncIn Stock: 848RAVF164DFT39K0 Datasheet

MFR RecommendedRFQ

TC164-FR-0739K2L

YAGEOIn Stock: 1255TC164-FR-0739K2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RACF164DFT39K2 is determined by the following critical parameters:

Primary Substitution Criteria:

• Resistance value within tolerance specification (39.2k Ohm ±1%)
• Isolated circuit topology with 4 resistor elements
• 8-pin configuration
• Surface mount 1206 (3216 Metric) package footprint
• Automotive-grade qualification (AEC-Q200)
• Operating temperature range: -55°C ~ 155°C minimum
• Temperature coefficient: ±200ppm/°C
• RoHS3 compliance

Secondary Compatibility Factors:

• Power per element rating (minimum 62.5mW required for direct substitution)
• Package profile (concave vs. convex terminal configuration)
• Moisture sensitivity level (MSL 1 preferred)

The identified substitute parts meet these criteria with the following distinctions noted in the parameter comparison section.

Parameter Comparison

Engineering Selection Recommendations

TC164-FR-0739K2L (YAGEO) - Primary Substitute

This part provides exact electrical parameter matching to the RACF164DFT39K2, including identical resistance value (39.2k Ohm), power rating (62.5mW per element), and package profile (concave terminals). The component maintains full automotive AEC-Q200 qualification and ROHS3 compliance. Product status is active, ensuring long-term availability. Height variation (0.028" vs. 0.030") is within typical PCB assembly tolerances. This substitute is suitable for direct replacement in existing designs.

RAVF164DFT39K0 (Stackpole Electronics Inc) - Alternative Substitute

This part offers increased power per element (100mW vs. 62.5mW), providing enhanced thermal margin in applications with higher dissipation requirements. Resistance value differs slightly (39k vs. 39.2k Ohm), resulting in a 0.51% variance within the ±1% tolerance specification. Package profile differs (convex vs. concave terminals), requiring PCB layout verification for mechanical clearance. Product status is active. This substitute is suitable when increased power rating is beneficial and package profile compatibility is confirmed.

Frequently Asked Questions (FAQ)

Q: Can RAVF164DFT39K0 be used as a direct drop-in replacement for RACF164DFT39K2?

A: Electrical substitution is possible due to matching tolerance, temperature coefficient, and operating range. However, the convex package profile differs from the concave profile of the original part. PCB layout verification is required to confirm mechanical compatibility, particularly for solder joint formation and component clearance.

Q: What is the significance of the 39k vs. 39.2k Ohm difference between RACF164DFT39K2 and RAVF164DFT39K0?

A: Both values fall within the ±1% tolerance band of the original specification. The 0.51% variance is electrically insignificant for most circuit applications. Circuit-specific tolerance analysis should be performed if the application requires tighter resistance matching.

Q: Why is TC164-FR-0739K2L recommended as the primary substitute?

A: This YAGEO part matches all critical electrical parameters of the RACF164DFT39K2, including resistance value, power rating, and package profile. Active product status ensures continued availability. These factors make it the most direct functional equivalent.

Q: Are all substitute parts automotive-qualified?

A: Yes. Both RAVF164DFT39K0 and TC164-FR-0739K2L carry AEC-Q200 qualification and are rated for automotive-grade applications across the -55°C ~ 155°C operating temperature range.

Q: What is the impact of different package heights on PCB assembly?

A: Height variations (0.024" to 0.030") are within standard PCB assembly process windows. Reflow profile and solder paste volume may require minor adjustment, but these differences do not typically necessitate PCB redesign.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RAVF164DFT39K0 and TC164-FR-0739K2L are both ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), matching the environmental compliance profile of the original part.