SEFCX-1 Equivalent & Substitute Parts

Part Overview

The SEFCX-1 is a 1 Circuit Barrier Block Connector manufactured by Curtis Industries, featuring screws with captive plate termination and solder turret bottom connection. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and system maintenance. The SEFCX-1 operates at 5A current rating with wire gauge compatibility of 16-22 AWG and is housed in a dual-wall barrier configuration with flange mounting capability.

Substiute Parts

SEFCX-1

Curtis IndustriesIn Stock: 1118SEFCX-1 Datasheet

Current PartRFQ

T38028-01-0

Curtis IndustriesIn Stock: 897T38028-01-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The T38028-01-0 qualifies as a functional equivalent to the SEFCX-1 based on the following substitution criteria:

Matching Parameters:

• Terminal Block Type: Barrier Block (both parts)
• Number of Circuits: 1 (both parts)
• Number of Wire Entries: 1 (both parts)
• Top Termination: Screws with Captive Plate (both parts)
• Bottom Termination: Solder Turret (both parts)
• Barrier Type: 2 Wall (Dual) (both parts)
• Mounting Type: Chassis, Panel (both parts)
• Material Flammability Rating: UL94 V-0 (both parts)
• Moisture Sensitivity Level: 1 (Unlimited) (both parts)
• Manufacturer: Curtis Industries (both parts)

The T38028-01-0 is an active part with enhanced electrical specifications, including higher current rating (20A versus 5A) and defined voltage rating (300V), making it suitable for applications requiring the SEFCX-1's functional configuration with improved performance headroom.

Parameter Comparison

Engineering Selection Recommendations

The T38028-01-0 is the active equivalent for the obsolete SEFCX-1. Selection of the T38028-01-0 is supported by the following factors:

Part Status: The T38028-01-0 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete SEFCX-1.

Compliance Certifications: Both parts maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity classification. The T38028-01-0 carries ROHS3 Compliant status, meeting current regulatory requirements.

Functional Compatibility: The T38028-01-0 preserves the core functional architecture of the SEFCX-1, including 1-circuit barrier block configuration, dual-wall barrier type, screws with captive plate termination, and solder turret bottom connection.

Electrical Performance: The T38028-01-0 provides enhanced electrical specifications with 20A current rating and 300V voltage rating, offering performance margin above the SEFCX-1's 5A rating. Wire gauge compatibility extends to 12-22 AWG, encompassing the SEFCX-1's 16-22 AWG range.

Thermal Characteristics: Operating temperature rating of 105°C on the T38028-01-0 remains within acceptable range for applications designed for the SEFCX-1's 110°C specification.

Frequently Asked Questions (FAQ)

Q: Can the T38028-01-0 directly replace the SEFCX-1 in existing applications?

A: The T38028-01-0 is functionally equivalent to the SEFCX-1 across all core parameters: barrier block type, 1-circuit configuration, dual-wall barrier, screws with captive plate termination, and solder turret bottom connection. Physical mounting compatibility is maintained through identical chassis and panel mounting capability. The T38028-01-0 provides enhanced electrical performance with higher current and voltage ratings.

Q: What are the key differences between these parts?

A: The primary differences are: (1) Part Status—T38028-01-0 is active while SEFCX-1 is obsolete; (2) Current Rating—T38028-01-0 rated at 20A versus SEFCX-1 at 5A; (3) Voltage Rating—T38028-01-0 specified at 300V while SEFCX-1 has no specified voltage rating; (4) Wire Gauge Range—T38028-01-0 accommodates 12-22 AWG versus SEFCX-1's 16-22 AWG; (5) Insulation Material—T38028-01-0 uses Polypropylene (PP) while SEFCX-1 uses Polyphenylene Oxide (PPO); (6) Operating Temperature—T38028-01-0 rated at 105°C versus SEFCX-1 at 110°C.

Q: Are there any compliance or regulatory considerations?

A: Both parts maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity classification. The T38028-01-0 carries ROHS3 Compliant status, meeting current regulatory requirements. Both parts are classified under ECCN EAR99 and HTSUS 8536.90.4000.

Q: Does the insulation material difference affect substitution suitability?

A: Both insulation materials—Polyphenylene Oxide (PPO) in the SEFCX-1 and Polypropylene (PP) in the T38028-01-0—achieve UL94 V-0 flammability rating. The material difference does not affect the functional equivalence for barrier block terminal applications within the specified operating parameters.

Q: What is the wire gauge compatibility consideration?

A: The T38028-01-0 supports wire gauge range of 12-22 AWG, which encompasses the SEFCX-1's 16-22 AWG specification. Applications using wire gauges within the 16-22 AWG range are fully compatible with the T38028-01-0.

Q: Is the lower operating temperature rating of the T38028-01-0 a concern?

A: The T38028-01-0 operates at 105°C maximum compared to the SEFCX-1's 110°C. For applications operating below 105°C, this difference presents no limitation. Applications requiring operation above 105°C require thermal analysis to confirm suitability.