DF11G-40DP-2V(20) Equivalent & Substitute Parts

Part Overview

The DF11G-40DP-2V(20) is a surface mount rectangular connector header manufactured by Hirose Electric Co Ltd, featuring 40 positions arranged in 2 rows with 2.00mm pitch. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing. The part is designed for board-to-board or cable applications with shrouded 4-wall construction and detent lock fastening.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF11G-40DP-2V(20)
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF11
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.079" (2.00mm)
Number of Positions	40
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Shrouding	Shrouded - 4 Wall
Fastening Type	Detent Lock
Operating Temperature	-30°C ~ 85°C
Current Rating	2A
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the DF11G-40DP-2V(20) is determined by the following critical parameters:

Pitch - Mating: 0.079" (2.00mm) - must match exactly for mechanical compatibility
Number of Positions: 40 - electrical interface requirement
Number of Rows: 2 - physical layout constraint
Row Spacing - Mating: 0.079" (2.00mm) - mechanical fit requirement
Mounting Type: Surface Mount - assembly process compatibility
Contact Type: Male Pin - mating interface specification
Style: Board to Board or Cable - application compatibility

The DF11G-40DP-2V(20) has one direct equivalent within the same Hirose DF11 series: DF11GZ-40DP-2V(20), which differs only in packaging and RoHS compliance status.

The Samtec TMMH series parts provide functional alternatives that maintain the critical electrical and mechanical parameters (pitch, position count, row configuration, and surface mount assembly) while offering active product status and improved compliance certifications. These alternatives feature different shrouding configurations (unshrouded versus shrouded), contact materials (phosphor bronze versus brass), and fastening mechanisms (push-pull versus detent lock), which represent design trade-offs rather than incompatibilities.

Parameter Comparison

Parameter	DF11G-40DP-2V(20)	DF11GZ-40DP-2V(20)	TMMH-120-04-F-DV-EP	TMMH-120-04-F-DV-EPC	TMMH-120-04-G-DV-EP	TMMH-120-04-G-DV-EPC	TMMH-120-04-L-DV-EP	TMMH-120-04-L-DV-EPC	TMMH-120-04-S-DV-EP	TMMH-120-04-S-DV-EP-018	TMMH-120-04-S-DV-EP-A
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Positions	40	40	40	40	40	40	40	40	40	39	40
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Connector Type	Header	Header	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Fastening Type	Detent Lock	Detent Lock	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

The DF11G-40DP-2V(20) is classified as obsolete. For new designs or ongoing production requiring this connector, the following selection path is recommended:

Primary Equivalent: DF11GZ-40DP-2V(20) from Hirose Electric Co Ltd maintains identical electrical and mechanical specifications while offering RoHS compliance and improved availability (1048 units in stock versus 970 units for the original part). This part is also obsolete but represents the direct equivalent within the DF11 series.

Active Product Alternatives: The Samtec TMMH-120 series provides functionally compatible alternatives with active product status. All TMMH variants maintain the critical 2.00mm pitch, 40-position, 2-row configuration required for mechanical and electrical compatibility. These parts offer ROHS3 compliance and extended operating temperature range (-55°C to 125°C versus -30°C to 85°C), providing superior environmental performance.

Design considerations for TMMH substitution include:

Unshrouded construction versus the original 4-wall shrouded design affects EMI performance and mating force characteristics
Push-pull fastening replaces detent lock, altering connector engagement behavior
Cuttable header design enables custom position configurations
Contact material change from brass to phosphor bronze affects electrical and mechanical properties
Gold plating options (TMMH-120-04-F-DV-EP, TMMH-120-04-G-DV-EP, TMMH-120-04-L-DV-EP, TMMH-120-04-S-DV-EP variants) provide varying corrosion resistance levels

TMMH-120-04-S-DV-EP-A is recommended as the primary Samtec alternative due to active product status, ROHS3 compliance, board guide feature compatibility with the original design, and highest inventory availability (838 units in stock).

Frequently Asked Questions (FAQ)

Q: Can TMMH series connectors directly replace DF11G-40DP-2V(20) without PCB redesign?

A: TMMH connectors maintain the same 2.00mm pitch and 2-row, 40-position configuration, enabling mechanical compatibility at the connector interface. However, the unshrouded design and different fastening mechanism (push-pull versus detent lock) may require evaluation of mating force, EMI shielding requirements, and connector retention strategy. PCB footprint compatibility depends on specific land pattern design.

Q: What is the difference between TMMH variants with different letter codes (F, G, L, S)?

A: The letter codes designate contact finish specifications. F, G, L, and S represent different gold plating thicknesses and post-finish combinations, affecting corrosion resistance and electrical contact performance. Selection depends on environmental exposure and signal integrity requirements.

Q: Why do some TMMH parts have "-EPC" suffix while others have "-EP"?

A: The "-EPC" suffix indicates board lock feature inclusion, providing additional mechanical retention. The "-EP" variant omits this feature. Both maintain electrical and mechanical compatibility; selection depends on connector retention requirements.

Q: Is TMMH-120-04-S-DV-EP-018 suitable as a substitute?

A: TMMH-120-04-S-DV-EP-018 differs from other TMMH variants by loading only 39 positions instead of 40. This part is suitable only if the application design accommodates 39-position configuration. For full 40-position requirement, use TMMH-120-04-S-DV-EP-A or other full-load variants.

Q: What compliance advantages do Samtec TMMH alternatives offer?

A: TMMH series parts are ROHS3 compliant and active products with extended operating temperature range (-55°C to 125°C). The original DF11G-40DP-2V(20) is RoHS non-compliant and obsolete. DF11GZ-40DP-2V(20) provides RoHS compliance but remains obsolete. TMMH alternatives support modern regulatory requirements and ensure long-term component availability.

Q: Are packaging differences between tube and standard packaging significant for substitution?

A: Packaging affects handling, storage, and assembly processes but does not impact electrical or mechanical connector performance. DF11GZ-40DP-2V(20) and TMMH-120-04-S-DV-EP-A are available in tube packaging, facilitating automated assembly processes. Standard packaging variants are suitable for manual or semi-automated assembly.

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