DF20F-40DP-1H(59) Equivalent & Substitute Parts

Part Overview

The DF20F-40DP-1H(59) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for surface mount, right-angle applications with 40 positions at 1.00mm pitch. This connector is classified as obsolete, which necessitates identification of active equivalent parts to ensure design continuity and supply chain reliability. The part features shrouded 4-wall construction, solder termination, and push-pull fastening suitable for board-to-cable/wire interconnections.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF20F-40DP-1H(59)
Manufacturer	Hirose Electric Co Ltd
Series	DF20
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	40
Number of Rows	2
Pitch - Mating	0.039" (1.00mm)
Row Spacing - Mating	0.039" (1.00mm)
Mounting Type	Surface Mount, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature	-35°C ~ 85°C
Voltage Rating	100V
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the DF20F-40DP-1H(59) is determined by the following critical parameters:

Connector Series & Type: Must be DF20 series header with male pin contact type
Position Count & Configuration: 40 positions in 2-row configuration
Pitch Specifications: 1.00mm mating pitch and 1.00mm row spacing
Mounting & Orientation: Surface mount, right-angle orientation
Shrouding & Fastening: Shrouded 4-wall construction with push-pull fastening
Termination Method: Solder termination
Electrical Ratings: 100V voltage rating and current capacity compatible with application requirements
Environmental Compliance: UL94 V-0 flammability rating and RoHS compliance

The substitute part DF20F-40DP-1H(52) meets all critical substitution criteria while offering active product status and improved availability.

Parameter Comparison

Parameter	DF20F-40DP-1H(59)	DF20F-40DP-1H(52)	Compatibility
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Identical
Series	DF20	DF20	Identical
Connector Type	Header	Header	Identical
Contact Type	Male Pin	Male Pin	Identical
Number of Positions	40	40	Identical
Number of Rows	2	2	Identical
Pitch - Mating	0.039" (1.00mm)	0.039" (1.00mm)	Identical
Row Spacing - Mating	0.039" (1.00mm)	0.039" (1.00mm)	Identical
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Identical
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Identical
Termination	Solder	Solder	Identical
Fastening Type	Push-Pull	Push-Pull	Identical
Insulation Height	0.217" (5.51mm)	0.217" (5.50mm)	Equivalent
Contact Finish - Mating	Tin	Gold	Different
Contact Finish - Post	Tin	Gold	Different
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C	Identical
Voltage Rating	100V	100VAC/DC	Equivalent
Material Flammability Rating	UL94 V-0	UL94 V-0	Identical
RoHS Status	RoHS Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Upgrade
Packaging	Bulk	Tape & Reel (TR)	Different

Engineering Selection Recommendations

The DF20F-40DP-1H(52) is the direct substitute for the obsolete DF20F-40DP-1H(59). Both parts share identical mechanical and electrical specifications across all critical parameters including connector type, position count, pitch, mounting configuration, and operating temperature range.

Key advantages of the DF20F-40DP-1H(52):

Active Product Status: The substitute maintains current manufacturing status, ensuring long-term supply chain availability and design support
Enhanced Compliance: ROHS3 compliance provides alignment with current regulatory requirements
Improved Contact Finish: Gold plating on mating and post contacts offers superior corrosion resistance and contact reliability compared to tin finish
Packaging Optimization: Tape & Reel packaging supports automated assembly processes

The primary difference is contact finish material. Gold-plated contacts provide enhanced durability and lower contact resistance, making the substitute suitable for applications requiring extended service life or high-reliability interconnections.

Frequently Asked Questions (FAQ)

Q: Can DF20F-40DP-1H(52) be used as a direct replacement for DF20F-40DP-1H(59)?

A: Yes. Both parts are mechanically and electrically compatible. They share identical pitch (1.00mm), position count (40), row configuration (2), mounting type (surface mount right-angle), and electrical ratings (100V, 1A). The substitute offers active product status and improved contact finish.

Q: What is the difference between tin and gold contact finishes?

A: Tin finish provides basic corrosion protection suitable for standard applications. Gold finish offers superior corrosion resistance, lower contact resistance, and extended service life, particularly beneficial in high-reliability or harsh environment applications.

Q: Does packaging differ between these parts?

A: Yes. The DF20F-40DP-1H(59) is supplied in bulk packaging, while the DF20F-40DP-1H(52) is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly processes.

Q: Are the insulation heights identical?

A: The insulation heights are equivalent. DF20F-40DP-1H(59) measures 0.217" (5.51mm) while DF20F-40DP-1H(52) measures 0.217" (5.50mm). This 0.01mm difference is within standard manufacturing tolerances and does not affect mechanical compatibility.

Q: What is the current rating for DF20F-40DP-1H(52)?

A: The current rating varies by wire gauge. For applications requiring a fixed current specification, consult the detailed product datasheet or contact the manufacturer for wire gauge-specific ratings.

Q: Are both parts RoHS compliant?

A: Yes. DF20F-40DP-1H(59) is RoHS Compliant, and DF20F-40DP-1H(52) is ROHS3 Compliant. Both meet RoHS requirements; ROHS3 represents the current regulatory standard.

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