TE Connectivity 747321-3 D-Sub Plug 15 Position IDC Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 747321-3 is a 15 position D-Sub plug connector with male pins, designed for IDC (Insulation Displacement Contact) termination on ribbon cables. This connector belongs to the AMPLIMITE HDF-20 series and features a D-shaped shell layout (Size 2, DA/A configuration) with free-hanging, in-line mounting. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing system maintenance, repair, and new design implementations where legacy compatibility is required.

Substiute Parts

747321-3

TE Connectivity AMP ConnectorsIn Stock: 872747321-3 Datasheet

Current PartRFQ

1658615-3

TE Connectivity AMP ConnectorsIn Stock: 15521658615-3 Datasheet

DirectRFQ

G17K15101001EU

Amphenol ICC (Commercial Products)In Stock: 835G17K15101001EU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 747321-3 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Connector style (D-Sub)
• Connector type (Plug, Male Pins)
• Number of positions (15)
• Number of rows (2)
• Shell size and layout (Size 2, DA/A)
• Mounting type (Free Hanging, In-Line)
• Termination method (IDC, Ribbon Cable)
• Contact type (Signal)
• Flange feature (Housing/Shell, Unthreaded)
• Material flammability rating (UL94 V-0)
• Operating temperature range (-55°C ~ 105°C)
• Moisture sensitivity level (1, Unlimited)

Secondary Compatibility Parameters:

• Current rating (1.25A minimum)
• Contact finish (Gold)
• Color (Black)
• Feed-through feature

Substitute parts must match all primary criteria to ensure mechanical and electrical compatibility. Variations in shell material, contact material composition, dielectric material type, and RoHS compliance status do not preclude substitution when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 1658615-3 (Primary Substitute)

The 1658615-3 is the direct equivalent substitute for the 747321-3. Both parts are manufactured by TE Connectivity within the AMPLIMITE HDF-20 series and share identical electrical and mechanical specifications across all critical parameters. The 1658615-3 is currently in active production status with higher inventory availability (1509 units) compared to the obsolete 747321-3. The primary distinction is RoHS compliance status: the 1658615-3 is RoHS compliant, whereas the 747321-3 is non-compliant. For applications requiring RoHS compliance, the 1658615-3 is the appropriate selection. For legacy systems requiring exact material composition matching, compatibility assessment is necessary.

Amphenol ICC G17K15101001EU (Cross-Manufacturer Substitute)

The G17K15101001EU from Amphenol ICC (Commercial Products) series provides cross-manufacturer substitution capability. This connector meets all primary substitution criteria and maintains mechanical and electrical compatibility. The G17K15101001EU includes additional features (grounding indents and strain relief) not present in the 747321-3. The connector is RoHS compliant and carries active product status. Operating temperature range is not specified for this part; applications requiring confirmed temperature performance should reference the 1658615-3. The G17K15101001EU uses brass contact material and polybutylene terephthalate (PBT) dielectric material, differing from the phosphor bronze contacts and thermoplastic dielectric of the 747321-3. These material differences do not affect functional substitution for standard signal applications.

Frequently Asked Questions (FAQ)

Q: Can the 1658615-3 directly replace the 747321-3 in existing assemblies?

A: Yes. The 1658615-3 is mechanically and electrically equivalent to the 747321-3. Both connectors share identical position count (15), row configuration (2), shell size (Size 2, DA/A), mounting type (free-hanging in-line), and termination method (IDC ribbon cable). Mating with corresponding D-Sub receptacles and ribbon cable termination procedures are identical.

Q: What is the significance of RoHS compliance differences between 747321-3 and 1658615-3?

A: The 747321-3 is RoHS non-compliant, while the 1658615-3 is RoHS compliant. RoHS compliance indicates the absence of restricted substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers) in the component. For applications subject to RoHS regulations or customer requirements, the 1658615-3 is the appropriate selection. For legacy systems without RoHS mandates, either part functions identically.

Q: Are there differences in contact material between substitute options?

A: Yes. The 747321-3 and 1658615-3 use phosphor bronze contacts, while the G17K15101001EU uses brass contacts. Both materials provide adequate electrical conductivity and contact reliability for signal-level applications at the specified 1.25A current rating. Material selection does not affect functional compatibility for standard D-Sub signal applications.

Q: What is the wire gauge compatibility for IDC termination?

A: The 1658615-3 specifies wire gauge compatibility of 26-28 AWG, stranded or solid. The 747321-3 and G17K15101001EU do not specify wire gauge in the provided data. For ribbon cable termination, confirm that the ribbon cable conductor gauge falls within the 26-28 AWG range to ensure proper IDC contact engagement and electrical performance.

Q: Does the G17K15101001EU's additional features (grounding indents, strain relief) affect compatibility?

A: No. Grounding indents and strain relief are supplementary features that enhance mechanical robustness and EMI performance but do not affect basic connector compatibility. The G17K15101001EU remains mechanically and electrically interchangeable with the 747321-3 for applications requiring standard D-Sub 15-position plug functionality.

Q: What is the current rating for all substitute options?

A: The 747321-3 and 1658615-3 are rated for 1.25A. The G17K15101001EU does not specify a current rating in the provided data. For applications requiring confirmed current capacity, the 1658615-3 provides explicit 1.25A rating matching the original part.

Q: Are operating temperature ranges identical across all options?

A: The 747321-3 and 1658615-3 both specify -55°C to 105°C operating temperature range. The G17K15101001EU does not provide operating temperature specification. For applications requiring confirmed temperature performance across the full range, the 1658615-3 is the appropriate selection.

Q: What packaging differences exist between substitute parts?

A: The 747321-3 packaging is not specified. The 1658615-3 is supplied in bulk packaging. The G17K15101001EU packaging is not specified. Packaging differences do not affect connector functionality; they relate only to order quantity and handling procedures.