3M 8325-7003 D-Sub 25 Position Receptacle Connector Equivalent & Substitute Parts

Part Overview

The 3M 8325-7003 is a 25 position D-Sub receptacle connector with female sockets, designed for panel mount applications using IDC (insulation displacement contact) termination with ribbon cable. This connector features a DB/B shell size (Shell Size 3) with steel tin-plated housing and gold-plated contacts rated for 1A at operating temperatures from -55°C to 105°C.

The 8325-7003 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design compatibility in legacy systems or to source components when original inventory becomes unavailable. Substitute connectors must maintain electrical and mechanical compatibility across the 25-position, 2-row D-Sub receptacle configuration.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Panel Mount
Termination	IDC, Ribbon Cable
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Contact Finish Thickness	30.0µin (0.76µm)
Material Flammability Rating	UL94 V-0
Current Rating (Amps)	1A
Dielectric Material	Polybutylene Terephthalate (PBT), Polyester, Glass Filled
Wire Gauge	26-28 AWG
Contact Material	Copper Alloy
Operating Temperature	-55°C ~ 105°C
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 3M 8325-7003 is determined by strict adherence to the following critical parameters:

Core Compatibility Parameters:

Connector Style: D-Sub
Connector Type: Receptacle, Female Sockets
Number of Positions: 25
Number of Rows: 2
Shell Size, Connector Layout: 3 (DB, B)
Termination: IDC, Ribbon Cable
Material Flammability Rating: UL94 V-0
Dielectric Material: Polybutylene Terephthalate (PBT) or Thermoplastic
Operating Temperature Range: -55°C ~ 105°C

Allowable Variations:

Mounting Type: Panel Mount (primary) or Free Hanging (In-Line) with mechanical adapter consideration
Current Rating: 1A (minimum) to 3A (maximum)
Contact Finish Thickness: 15.0µin to 30.0µin
Shell Material Finish: Steel Tin Plated or Steel (unspecified finish)
Contact Material: Copper Alloy, Phosphor Bronze, or Brass
Packaging: Bulk, Tray, or Tube

Substitutes are grouped by mounting configuration and electrical rating. Panel mount variants maintain direct mechanical compatibility. Free hanging (in-line) variants require mechanical interface consideration but maintain electrical compatibility through identical IDC ribbon cable termination and 25-position, 2-row configuration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Type	Positions	Mounting Type	Current Rating (A)	Shell Material, Finish	Contact Finish	Operating Temp (°C)	Product Status	RoHS Status
8325-7003	3M	Receptacle, Female Sockets	25 (2-row)	Panel Mount	1	Steel, Tin Plated	Gold	-55 ~ 105	Obsolete	RoHS Compliant
09663186500	HARTING	Receptacle, Female Sockets	25 (2-row)	Panel Mount	2	Steel	Not Specified	Not Specified	Active	ROHS3 Compliant
09663187500	HARTING	Receptacle, Female Sockets	25 (2-row)	Panel Mount	2	Steel	Not Specified	Not Specified	Active	ROHS3 Compliant
1658609-2	TE Connectivity AMP Connectors	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	1.25	Not Specified	Gold	-55 ~ 105	Active	ROHS3 Compliant
1658610-2	TE Connectivity AMP Connectors	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	1.25	Steel, Tin Plated	Gold	-55 ~ 105	Active	ROHS3 Compliant
1658612-2	TE Connectivity AMP Connectors	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	1.25	Steel, Tin Plated	Gold	-55 ~ 105	Active	RoHS Compliant
5746861-2	TE Connectivity AMP Connectors	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	1.25	Steel, Tin Plated	Gold	-55 ~ 105	Active	RoHS Compliant
G17K25001001EU	Amphenol ICC (Commercial Products)	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	Not Specified	Steel	Gold	Not Specified	Active	RoHS Compliant
L117DBFRA25S	Amphenol ICC (Commercial Products)	Receptacle, Female Sockets	25 (2-row)	Free Hanging (In-Line)	3	Steel, Tin Plated	Gold	-55 ~ 105	Active	RoHS Compliant

Engineering Selection Recommendations

Panel Mount Direct Replacement (Mechanical Compatibility):

HARTING 09663186500 and 09663187500 maintain panel mount configuration identical to the 8325-7003. Both are active products with ROHS3 compliance. The HARTING variants feature 2A current rating, exceeding the 1A specification of the original part. These connectors are suitable for direct mechanical substitution in panel mount applications where the increased current capacity does not create design conflicts.

Free Hanging (In-Line) Alternatives (Electrical Compatibility with Mounting Consideration):

TE Connectivity AMPLIMITE HDF-20 series (1658609-2, 1658610-2, 1658612-2) and 5746861-2 provide electrical equivalence with IDC ribbon cable termination and 25-position, 2-row D-Sub configuration. These connectors are active products with current ratings of 1.25A, matching the original 1A specification within acceptable tolerance. All maintain operating temperature range of -55°C to 105°C and gold contact finish at 30.0µin thickness. Mounting type differs (free hanging in-line versus panel mount), requiring mechanical interface adaptation.

Higher Current Rating Alternative:

Amphenol ICC L117DBFRA25S (DFR series) offers 3A current rating with free hanging in-line mounting. This connector maintains gold contact finish, steel tin-plated housing, and -55°C to 105°C operating temperature. The elevated current capacity accommodates higher power applications while preserving electrical compatibility through identical IDC ribbon cable termination and 25-position configuration.

Compliance Considerations:

All substitute parts maintain UL94 V-0 flammability rating and MSL 1 (unlimited) moisture sensitivity level. HARTING variants carry ROHS3 compliance. TE Connectivity and Amphenol ICC parts carry RoHS or ROHS3 compliance. Selection should align with system-level compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can HARTING 09663186500 or 09663187500 directly replace the 3M 8325-7003 in a panel mount application?

A: Yes. Both HARTING connectors maintain identical panel mount configuration, 25-position 2-row D-Sub receptacle design, IDC ribbon cable termination, and UL94 V-0 flammability rating. The 2A current rating exceeds the original 1A specification. Verify that the increased current capacity does not conflict with circuit design parameters.

Q: What is the primary difference between panel mount and free hanging (in-line) D-Sub receptacles?

A: Panel mount connectors attach directly to a panel or PCB through a flange with mounting holes. Free hanging (in-line) connectors are designed for cable-to-cable or cable-to-board connections without panel integration. Mechanical interface differs; electrical function remains equivalent for IDC ribbon cable termination.

Q: Are TE Connectivity AMPLIMITE HDF-20 series connectors electrically equivalent to the 3M 8325-7003?

A: Yes, electrically. All AMPLIMITE HDF-20 variants (1658609-2, 1658610-2, 1658612-2) maintain 25-position 2-row D-Sub receptacle configuration, IDC ribbon cable termination, 1.25A current rating, gold contact finish at 30.0µin thickness, and -55°C to 105°C operating temperature. Mounting type differs (free hanging in-line versus panel mount), requiring mechanical adaptation.

Q: What is the significance of contact finish thickness (30.0µin versus 15.0µin)?

A: Contact finish thickness determines contact durability and wear resistance. The 3M 8325-7003 specifies 30.0µin (0.76µm) gold plating. Amphenol ICC L117DBFRA25S specifies 15.0µin (0.38µm). Both thicknesses meet industry standards for D-Sub connectors. Thicker plating provides extended contact life in high-cycle mating applications.

Q: Can the Amphenol ICC L117DBFRA25S (3A rating) be used in place of the 3M 8325-7003 (1A rating)?

A: Yes, from an electrical compatibility standpoint. The L117DBFRA25S maintains 25-position 2-row D-Sub receptacle design, IDC ribbon cable termination, gold contact finish, and -55°C to 105°C operating temperature. The 3A current rating exceeds the original 1A specification. Mounting type differs (free hanging in-line versus panel mount). Verify mechanical interface compatibility and confirm that elevated current capacity does not introduce thermal or design conflicts.

Q: What packaging options are available for substitute connectors?

A: Substitute parts are available in Bulk, Tray, and Tube packaging. The 3M 8325-7003 is supplied in Bulk. HARTING variants are available in Tray (09663186500) and Bulk (09663187500). TE Connectivity parts are supplied in Bulk (1658609-2, 1658610-2, 1658612-2) and Tube (5746861-2). Amphenol ICC L117DBFRA25S is supplied in Tray. Packaging selection depends on procurement volume and inventory management requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 3M 8325-7003 is RoHS Compliant. HARTING variants are ROHS3 Compliant. TE Connectivity and Amphenol ICC parts are RoHS or ROHS3 Compliant. All substitute parts meet RoHS requirements for lead-free and restricted substance compliance.

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