Molex 0740621081 VHDM 80-Position Backplane Connector Header

Part Overview

The Molex 0740621081 is an 80-position backplane connector header featuring male pins configured in an 8×10 matrix with VHDM guide-right orientation. This through-hole component is designed for PCB-mounted applications requiring shielded, high-density interconnection in industrial and computing environments.

The 0740621081 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	Value
Connector Type	Header, Male Pins
Connector Style	VHDM, Guide Right
Number of Positions	80
Matrix Configuration	8 Rows × 10 Columns
Pitch	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Press-Fit
Features	Shielded
Contact Finish	Gold, 30.0µin (0.76µm)
Current Rating	3A
Voltage Rating	120V
Operating Temperature Range	-55°C to +105°C
Material Flammability	UL94 V-0
Color	Black
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the Molex 0740621081 are identified based on electrical and mechanical parameter equivalence within the VHDM 74062 series. The following criteria determine substitutability:

Identical connector type (Header, Male Pins) and style (VHDM, Guide Right)
Matching position count (80 positions) and matrix configuration (8×10)
Identical pitch specification (0.079" / 2.00mm)
Equivalent mounting method (Through Hole) and termination (Press-Fit)
Matching electrical ratings (3A current, 120V voltage)
Identical operating temperature range (-55°C to +105°C)
Equivalent contact finish (Gold) and material flammability (UL94 V-0)

The substitute parts 0740621001 and 0740629082 satisfy all these criteria and are classified as direct functional equivalents within the same product series.

Parameter Comparison

Parameter	0740621081 (Main)	0740621001 (Substitute)	0740629082 (Substitute)
Manufacturer	Molex	Molex	Molex
Series	VHDM 74062	VHDM 74062	VHDM 74062
Connector Type	Header, Male Pins	Header, Male Pins	Header, Male Pins
Connector Style	VHDM, Guide Right	VHDM, Guide Right	VHDM, Guide Right
Number of Positions	80	80	80
Matrix Configuration	8 Rows × 10 Columns	8 Rows × 10 Columns	8 Rows × 10 Columns
Pitch	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Press-Fit	Press-Fit	Press-Fit
Features	Shielded	Shielded	Shielded
Contact Finish	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin
Current Rating	3A	3A	3A
Voltage Rating	120V	120V	120V
Operating Temperature	-55°C to +105°C	-55°C to +105°C	-55°C to +105°C
Material Flammability	UL94 V-0	UL94 V-0	UL94 V-0
Color	Black	Black	Black
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Not specified	REACH Unaffected	REACH Unaffected
Packaging	Not specified	Tube	Tube

Engineering Selection Recommendations

Both substitute parts 0740621001 and 0740629082 are functionally equivalent to the obsolete 0740621081 across all specified electrical and mechanical parameters. The primary differentiators are product status and regulatory compliance.

The 0740621001 and 0740629082 are both active products with ROHS3 compliance and REACH unaffected status, making them suitable for new designs and legacy system updates where regulatory requirements apply. Both are supplied in tube packaging and maintain identical electrical performance and physical form factors.

Selection between the two substitute parts should be based on inventory availability and procurement lead times, as no technical differentiation exists between them.

Frequently Asked Questions (FAQ)

Q: Can the 0740621001 or 0740629082 be used as direct replacements for the 0740621081?

A: Yes. Both substitute parts are electrically and mechanically equivalent. They share identical connector type, position count, pitch, mounting method, electrical ratings, and operating temperature range. The 0740621081 is obsolete; the substitutes are active products.

Q: What is the primary difference between the substitute parts and the main part?

A: The main part (0740621081) is obsolete and non-RoHS compliant. Both substitute parts are active products with ROHS3 compliance and REACH unaffected status, making them suitable for applications with regulatory requirements.

Q: Are the 0740621001 and 0740629082 interchangeable with each other?

A: Yes. Both parts are functionally identical across all specified parameters. Selection should be based on availability and procurement considerations.

Q: What packaging is supplied for the substitute parts?

A: Both substitute parts are supplied in tube packaging.

Q: Do the substitute parts maintain the same electrical performance?

A: Yes. Current rating (3A), voltage rating (120V), operating temperature range (-55°C to +105°C), and all other electrical specifications are identical.

Q: Are there any compatibility concerns when substituting these parts in existing designs?

A: No compatibility concerns exist. The substitute parts maintain identical physical dimensions, pitch, mounting type, and electrical characteristics. PCB layouts and mating connectors designed for the 0740621081 are fully compatible with the substitute parts.

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