FCB-405-CX2 Equivalent & Substitute Parts

Part Overview

The FCB-405-CX2 is a general purpose relay manufactured by TE Connectivity Aerospace, Defense and Marine. This 4PDT (4 Form C) relay operates on a 12VDC coil and is designed for chassis mount applications. The part is currently active in production with 987 pieces available in new original stock condition.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications. Substitution becomes necessary due to inventory availability, supply chain considerations, or specific procurement requirements while maintaining identical functional performance.

Substiute Parts

FCB-405-CX2

TE Connectivity Aerospace, Defense and MarineIn Stock: 1095FCB-405-CX2 Datasheet

Current PartRFQ

1617787-2

TE Connectivity Aerospace, Defense and MarineIn Stock: 7831617787-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FCB-405-CX2 are identified based on strict equivalence across the following critical parameters:

Electrical Parameters:

• Contact form configuration (4PDT)
• Coil voltage rating (12VDC)
• Contact current rating (5 A)
• Maximum switching voltage (115VAC, 28VDC)
• Coil resistance (78 Ohms)
• Coil current (153.8 mA)
• Must operate voltage (9 VDC)
• Must release voltage (0.75 VDC)
• Operate and release time (6 ms each)

Mechanical Parameters:

• Mounting type (Chassis Mount)
• Termination style (Solder Hook)
• Seal rating (Sealed - Hermetically)
• Contact material (Silver Cadmium Oxide)
• Operating temperature range (-70°C ~ 125°C)

Compliance Parameters:

• Series designation (FCB-405, CII)
• Coil type (Non Latching)
• Relay type (General Purpose)
• RoHS status (RoHS non-compliant)
• REACH status (REACH Unaffected)

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The FCB-405-CX2 and substitute part 1617787-2 are parametric equivalents. Both parts are manufactured by TE Connectivity Aerospace, Defense and Marine within the FCB-405 series and maintain identical electrical, mechanical, and compliance characteristics.

Selection Criteria:

Both parts carry active product status and are available in new original stock condition. The FCB-405-CX2 has higher inventory availability at 987 pieces compared to 1617787-2 at 738 pieces.

Both parts are RoHS non-compliant and REACH unaffected, with identical compliance designations (ECCN: EAR99, HTSUS: 8536.41.0020).

The parts are interchangeable for all applications requiring a 4PDT general purpose relay with 12VDC coil operation, 5 A contact rating, and hermetically sealed construction. Selection between these parts should be based on procurement lead time, inventory availability, and supply chain requirements rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can 1617787-2 be used as a direct replacement for FCB-405-CX2?

A: Yes. The 1617787-2 is a parametric equivalent with identical electrical specifications, mechanical configuration, and compliance status. Direct substitution is supported across all electrical and mechanical parameters.

Q: Are there differences in contact switching capacity between these parts?

A: The FCB-405-CX2 specifies maximum load switching of 575VA and 140W. The 1617787-2 does not provide this specification in available documentation. Both parts share identical contact form (4PDT), current rating (5 A), and maximum switching voltage (115VAC, 28VDC). For applications requiring specific power handling verification, the FCB-405-CX2 documentation should be consulted.

Q: Do these relays require different mounting procedures?

A: No. Both parts use identical chassis mount configuration with solder hook termination. Mounting procedures, PCB layout, and solder specifications remain unchanged between the two parts.

Q: What is the operating temperature range for both parts?

A: Both the FCB-405-CX2 and 1617787-2 operate across the temperature range of -70°C to 125°C. Environmental specifications are identical.

Q: Are there any compliance or certification differences?

A: Both parts carry identical compliance status: RoHS non-compliant, REACH unaffected, ECCN EAR99, and HTSUS 8536.41.0020. No certification differences exist between the two parts.

Q: What is the coil resistance and current draw for these relays?

A: Both parts have a coil resistance of 78 Ohms and draw 153.8 mA at 12VDC. Power supply design and current budgeting remain identical for both parts.

Q: How do the response times compare?

A: Both parts have identical operate and release times of 6 milliseconds each. Switching speed performance is equivalent between the two parts.

Q: What contact material is used in these relays?

A: Both parts use Silver Cadmium Oxide (AgCdO) contact material, providing identical electrical and mechanical contact characteristics.