HFW4S-2STAE1LF Equivalent & Substitute Parts

Part Overview

The HFW4S-2STAE1LF is a 4-position FPC (Flat Flexible) connector manufactured by Amphenol ICC (FCI) with vertical, 1-sided contacts at 1.00mm pitch for surface mount applications. This connector is classified as obsolete, making substitute parts necessary for new designs and ongoing production support. The part features solder termination, gold-plated phosphor bronze contacts, and operates across a -55°C to 85°C temperature range with a 100V voltage rating.

Substiute Parts

HFW4S-2STAE1LF

Amphenol ICC (FCI)In Stock: 733HFW4S-2STAE1LF Datasheet

Current PartRFQ

1734248-4

TE Connectivity AMP ConnectorsIn Stock: 68841734248-4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HFW4S-2STAE1LF is determined by the following critical parameters:

• Number of Positions: Must be 4
• Pitch: Must be 0.039" (1.00mm)
• Mounting Type: Must be Surface Mount
• Connector/Contact Type: Must be Contacts, Vertical - 1 Sided
• Termination: Must be Solder
• FFC, FCB Thickness: Must be 0.30mm
• Contact Material: Must be Phosphor Bronze
• Contact Finish: Must be Gold
• Material Flammability Rating: Must be UL94 V-0
• Current Rating: Must be 1A
• Voltage Rating: Must be equal to or greater than 100V
• Operating Temperature Range: Must encompass or match the required range

The substitute part 1734248-4 (TE Connectivity AMP Connectors) meets all critical substitution criteria. This part is actively manufactured and available, providing a direct functional replacement for the obsolete HFW4S-2STAE1LF.

Parameter Comparison

Engineering Selection Recommendations

The 1734248-4 is a qualified substitute for the HFW4S-2STAE1LF based on the following factors:

Product Status: The HFW4S-2STAE1LF is obsolete, while the 1734248-4 is actively manufactured. This ensures long-term availability and supply chain continuity for new designs and production runs.

Compliance: Both parts maintain UL94 V-0 flammability ratings. The 1734248-4 carries ROHS3 compliance, exceeding the RoHS compliance of the original part, ensuring alignment with current regulatory requirements.

Electrical Performance: The 1734248-4 provides a higher voltage rating (125V vs. 100V), offering improved electrical margin. Current rating remains equivalent at 1A.

Mechanical Compatibility: Both connectors share identical pitch (1.00mm), position count (4), and FFC thickness (0.30mm). The height difference of 0.008" (0.20mm) is within typical PCB layout tolerances for vertical connector applications.

Temperature Range Consideration: The HFW4S-2STAE1LF operates from -55°C to 85°C, while the 1734248-4 operates from -20°C to 85°C. Applications requiring operation below -20°C must evaluate this difference against specific system requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1734248-4 be used as a direct replacement for the HFW4S-2STAE1LF?

A: Yes. Both connectors share identical pitch (1.00mm), position count (4), contact type (vertical, 1-sided), and termination method (solder). The 1.00mm pitch and 4-position configuration ensure mechanical and electrical compatibility on existing PCB layouts.

Q: What is the significance of the height difference between these connectors?

A: The HFW4S-2STAE1LF has a height of 0.209" (5.30mm), while the 1734248-4 measures 0.217" (5.50mm). This 0.008" (0.20mm) difference is negligible for most applications and falls within standard PCB design tolerances for vertical connector clearance.

Q: Does the operating temperature range difference affect substitution?

A: The HFW4S-2STAE1LF operates from -55°C to 85°C, while the 1734248-4 operates from -20°C to 85°C. If your application requires operation below -20°C, the substitute part is not suitable. For applications within the -20°C to 85°C range, the substitute is fully compatible.

Q: What is the difference in mating cycles between these parts?

A: The HFW4S-2STAE1LF supports 30 mating cycles, while the 1734248-4 supports 20 mating cycles. For applications requiring frequent connector mating and unmating, this difference should be evaluated against actual use patterns.

Q: Are there packaging differences between these parts?

A: The HFW4S-2STAE1LF packaging is not specified in available data. The 1734248-4 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount production.

Q: How do the housing materials differ?

A: The HFW4S-2STAE1LF uses glass-filled Polyamide (PA6T), while the 1734248-4 uses Polyamide (PA9T). Both materials meet UL94 V-0 flammability requirements. PA9T offers improved thermal and mechanical properties compared to PA6T.

Q: Is the 1734248-4 RoHS compliant?

A: Yes. The 1734248-4 carries ROHS3 compliance, which exceeds the RoHS compliance of the original HFW4S-2STAE1LF, ensuring compliance with current and future regulatory standards.