RF064PJ390CS Equivalent & Substitute Parts

Part Overview

The RF064PJ390CS is a 4-resistor isolated network array manufactured by Samsung Electro-Mechanics. This surface mount component features 39 Ohm resistors with ±5% tolerance and 31mW power per element rating in a 0502 (1406 Metric) package with long side terminals. The part is actively produced and ROHS3 compliant, making it suitable for applications requiring precision resistor networks in compact form factors. Equivalent parts may be required due to inventory availability, lead time considerations, or specific performance requirements within allowable parameter ranges.

Substiute Parts

RF064PJ390CS

Samsung Electro-MechanicsIn Stock: 851RF064PJ390CS Datasheet

Current PartRFQ

EXB-18V390JX

Panasonic Electronic ComponentsIn Stock: 20752EXB-18V390JX Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RF064PJ390CS with equivalent parts is permissible when the following critical parameters remain unchanged:

Mandatory Matching Parameters:

• Resistance value: 39 Ohm
• Tolerance: ±5%
• Number of resistors: 4
• Circuit type: Isolated
• Power per element: 31mW
• Package designation: 0502 (1406 Metric) with long side terminals
• Number of pins: 8
• Operating temperature range: -55°C ~ 125°C
• Mounting type: Surface Mount
• RoHS3 compliance status

Allowable Variation Parameters:

• Temperature coefficient: May vary within acceptable limits for the application
• Physical height (seated): Minor variations acceptable if within assembly clearance
• Packaging format: Cut Tape (CT) or Tape & Reel (TR) formats are interchangeable for component functionality
• Manufacturer: Different manufacturers permitted if all electrical and mechanical parameters align

The EXB-18V390JX from Panasonic Electronic Components qualifies as a direct substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: RF064PJ390CS (Samsung Electro-Mechanics)

Selection criteria:

• Active product status with established supply chain
• ROHS3 compliant for regulatory requirements
• MSL 1 rating eliminates moisture sensitivity constraints
• Temperature coefficient of ±250ppm/°C suitable for standard industrial applications
• Cut Tape packaging appropriate for lower-volume or manual assembly operations

Substitute Part: EXB-18V390JX (Panasonic Electronic Components)

Selection criteria:

• Active product status with higher inventory availability (20,717 Pcs vs. 770 Pcs)
• ROHS3 compliant for regulatory requirements
• MSL 1 rating eliminates moisture sensitivity constraints
• Temperature coefficient of ±200ppm/°C provides superior thermal stability compared to primary part
• Tape & Reel packaging optimized for high-volume automated assembly
• Seated height of 0.018" (0.45mm) versus 0.013" (0.33mm) remains within standard PCB assembly clearance specifications

Both parts satisfy identical electrical performance requirements and mechanical compatibility with 0502 package footprints. Selection between them should be based on inventory availability, packaging format requirements, and thermal stability needs for the specific application.

Frequently Asked Questions (FAQ)

Q: Can EXB-18V390JX be used as a direct replacement for RF064PJ390CS on existing PCBs?

A: Yes. Both parts share identical footprints (0502 with long side terminals), pin counts (8), and electrical specifications (39 Ohm, ±5%, 31mW per element). The maximum seated height difference (0.018" vs. 0.013") is within standard PCB assembly clearance tolerances and does not affect functionality or reliability.

Q: What is the significance of the temperature coefficient difference (±250ppm/°C vs. ±200ppm/°C)?

A: The temperature coefficient defines resistance value drift across the operating temperature range (-55°C to 125°C). The EXB-18V390JX exhibits lower drift (±200ppm/°C), resulting in superior stability. For applications requiring tighter resistance tolerance maintenance across temperature extremes, the Panasonic part provides enhanced performance. For standard applications, both coefficients are acceptable.

Q: Are the packaging formats (Cut Tape vs. Tape & Reel) interchangeable?

A: Yes, from a component functionality perspective. Cut Tape (CT) and Tape & Reel (TR) formats contain identical components with different presentation methods. Selection depends on assembly process requirements: Cut Tape suits manual or low-volume pick-and-place operations, while Tape & Reel optimizes high-volume automated assembly lines.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both RF064PJ390CS and EXB-18V390JX are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry MSL 1 (Unlimited) moisture sensitivity ratings, eliminating special storage or handling requirements.

Q: What determines whether a part can substitute for RF064PJ390CS?

A: Substitution requires exact matching of: resistance value (39 Ohm), tolerance (±5%), number of resistors (4), circuit type (Isolated), power per element (31mW), package type (0502 with long side terminals), pin count (8), operating temperature range (-55°C to 125°C), and mounting type (Surface Mount). Temperature coefficient and physical height may vary within application-acceptable limits. Manufacturer and packaging format are not substitution barriers.

Q: Is inventory status a factor in component selection?

A: Inventory status reflects current availability but does not affect electrical or mechanical compatibility. The EXB-18V390JX currently has higher stock levels (20,717 Pcs), which may influence lead time and procurement strategy. However, component selection should prioritize functional requirements and compliance status over inventory levels alone.