Molex 0391001208 Eurostyle Terminal Strip - Equivalent & Substitute Parts

Part Overview

The Molex 0391001208 is an 8-circuit Eurostyle terminal strip connector with 0.472" (12.00mm) pitch spacing, designed for chassis and panel mounting applications. This component features screw-type termination with a 40A current rating and 600V voltage rating, supporting wire gauges from 8-20 AWG. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations.

Key Parameters

Parameter	Value
Number of Circuits	8
Pitch	0.472" (12.00mm)
Terminal Block Type	Eurostyle Terminal Strip
Number of Rows	2
Top Termination	Screws
Bottom Termination	Closed
Barrier Type	Enclosed
Mounting Type	Chassis, Panel
Material - Insulation	Polyamide (PA66), Nylon 6/6

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0391001208 is determined by strict alignment with the following core parameters:

Circuit Configuration: 8 circuits with 0.472" (12.00mm) pitch spacing
Termination Style: Screw-type top termination with closed bottom configuration
Barrier Design: Enclosed barrier type
Mounting Compatibility: Chassis and panel mounting capability
Insulation Material: Polyamide (PA66) or equivalent nylon-based composition

Two substitute parts meet these criteria: the Molex 0391002208 (direct manufacturer variant) and the TE Connectivity 1776303-8 (cross-manufacturer equivalent). Both maintain identical circuit count, pitch spacing, termination methodology, and mounting compatibility as the original part.

Parameter Comparison

Parameter	Molex 0391001208	Molex 0391002208	TE Connectivity 1776303-8
Manufacturer	Molex	Molex	TE Connectivity AMP Connectors
Number of Circuits	8	8	8
Pitch	0.472" (12.00mm)	0.472" (12.00mm)	0.472" (12.00mm)
Terminal Block Type	Eurostyle Terminal Strip	Eurostyle Terminal Strip	Eurostyle Terminal Strip
Number of Rows	2	2	2
Number of Wire Entries	16	16	16
Top Termination	Screws	Screws	Screws
Bottom Termination	Closed	Closed	Closed
Barrier Type	Enclosed	Enclosed	Enclosed
Mounting Type	Chassis, Panel	Chassis, Panel	Chassis, Panel
Material - Insulation	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6
Wire Gauge	8-20 AWG	8-20 AWG	8-22 AWG
Current Rating (Amps)	40A	40A	50A
Voltage Rating	600V	600V	250V
Operating Temperature	100°C	-40°C ~ 105°C	100°C
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Molex 0391002208 is the primary substitute for the obsolete Molex 0391001208. Both parts share identical electrical and mechanical specifications, including 40A current rating, 600V voltage rating, and 8-20 AWG wire gauge compatibility. The 0391002208 is currently in active production status with significantly higher inventory availability (5710 units versus 640 units for the original part). This variant offers an extended operating temperature range (-40°C to 105°C) and improved flammability rating (UL94 V-0 versus V-2), providing enhanced performance margins for demanding applications. RoHS3 compliance is maintained across both parts.

TE Connectivity 1776303-8 serves as a cross-manufacturer equivalent when Molex supply is constrained. This part maintains full mechanical and circuit compatibility with identical pitch spacing, circuit count, and termination configuration. The TE Connectivity variant supports an expanded wire gauge range (8-22 AWG) and delivers higher current capacity (50A versus 40A). However, the voltage rating is reduced to 250V, and REACH compliance status is vendor-undefined. This substitute is suitable for applications operating within 250V maximum voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0391002208 directly replace the obsolete 0391001208 in existing designs?

A: Yes. Both parts are mechanically and electrically identical in all critical parameters: 8 circuits, 0.472" pitch, screw termination, and 40A/600V ratings. The 0391002208 is the recommended direct replacement due to active production status and superior temperature range.

Q: What are the key differences between the Molex 0391002208 and TE Connectivity 1776303-8?

A: The primary differences are voltage rating (600V for Molex versus 250V for TE Connectivity), current capacity (40A for Molex versus 50A for TE Connectivity), and wire gauge support (8-20 AWG for Molex versus 8-22 AWG for TE Connectivity). Both maintain identical circuit configuration and pitch spacing.

Q: Is the TE Connectivity 1776303-8 suitable for 600V applications?

A: No. The TE Connectivity part is rated for 250V maximum. Applications requiring 600V operation must use the Molex 0391002208 or original 0391001208.

Q: What is the impact of the flammability rating difference between the original part and Molex 0391002208?

A: The Molex 0391002208 features UL94 V-0 flammability rating compared to V-2 for the original part. V-0 indicates superior flame resistance and self-extinguishing properties, providing enhanced safety margins in applications subject to flammability requirements.

Q: Are both substitute parts RoHS compliant?

A: Yes. The Molex 0391002208 is ROHS3 compliant. The TE Connectivity 1776303-8 is RoHS compliant. Both meet current environmental compliance standards.

Q: Can the TE Connectivity 1776303-8 accommodate 22 AWG wire while the Molex parts support only 8-20 AWG?

A: Yes. The TE Connectivity 1776303-8 supports 8-22 AWG wire gauge range, providing compatibility with smaller gauge conductors. However, this expanded range does not affect mechanical or electrical interchangeability with the original part specifications.

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