TE Connectivity AMP Connectors 1-1734839-8 FPC Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1-1734839-8 is an 18-position FPC (Flat Flexible) connector designed for surface mount, right-angle applications with 0.50mm pitch. This connector features top-contact configuration, zero insertion force (ZIF) operation, and solder termination. The product is currently active and maintains full inventory availability.

Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and connector positioning to support component procurement flexibility and supply chain continuity.

Substiute Parts

1-1734839-8

TE Connectivity AMP ConnectorsIn Stock: 11951-1734839-8 Datasheet

Current PartRFQ

0528921833

MolexIn Stock: 15180528921833 Datasheet

SimilarRFQ

FH12-18S-0.5SH(55)

Hirose Electric Co LtdIn Stock: 3753FH12-18S-0.5SH(55) Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1-1734839-8 are identified based on the following critical parameters that determine functional compatibility:

Matching Parameters:

• Number of Positions: 18
• Pitch: 0.020" (0.50mm)
• Mounting Type: Surface Mount, Right Angle
• Termination: Solder
• FFC, FCB Thickness: 0.30mm
• Current Rating: 0.5A
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• Zero Insertion Force (ZIF) Feature

Allowable Variations:

• Connector/Contact Type: Top or Bottom contact configuration
• Voltage Rating: Substitute parts may have lower voltage ratings (50V vs. 250V) when application requirements permit
• Operating Temperature Range: Substitute parts may have extended lower temperature limits (-40°C vs. -20°C)
• Locking Feature: Slide Lock or Flip Lock mechanisms
• Contact Finish: Gold or Tin Bismuth
• Height Above Board: Minor variations within 0.079" to 0.081" range
• Product Status: Active or Obsolete

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 1-1734839-8 (TE Connectivity AMP Connectors)

The 1-1734839-8 is the recommended primary component for new designs. This part maintains active product status with full manufacturing support and availability. The connector features a 250V voltage rating, providing higher electrical margin for applications requiring elevated voltage specifications. The top-contact configuration and slide lock mechanism are optimized for specific PCB layout requirements. ROHS3 compliance and MSL 1 rating ensure compatibility with modern manufacturing processes.

Secondary Selection: FH12-18S-0.5SH(55) (Hirose Electric Co Ltd)

The FH12-18S-0.5SH(55) serves as an active substitute for applications where bottom-contact configuration is acceptable. This connector maintains equivalent electrical performance with 0.5A current rating and UL94 V-0 flammability compliance. The extended operating temperature range (-40°C to 85°C) accommodates wider environmental specifications. The flip lock mechanism and gold contact finish provide reliable mating cycles rated at 20 cycles. ROHS3 compliance and unlimited MSL rating ensure manufacturing compatibility.

Tertiary Selection: 0528921833 (Molex Easy-On 52892 Series)

The 0528921833 is classified as obsolete and should be selected only when existing inventory requirements or legacy system compatibility necessitate its use. While this connector meets core electrical specifications (0.5A current, UL94 V-0 flammability), the 50V voltage rating is significantly lower than the primary part. The tin bismuth contact finish differs from gold plating. The flip lock mechanism and bottom-contact configuration require PCB layout verification. ROHS3 compliance and unlimited MSL rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can the 0528921833 (Molex) be used as a direct replacement for the 1-1734839-8 (TE Connectivity)?

A: The 0528921833 is not a direct replacement due to contact position differences (bottom vs. top) and reduced voltage rating (50V vs. 250V). PCB layout modifications are required for bottom-contact configuration. Voltage rating compatibility must be verified for the specific application.

Q: What is the primary difference between the top-contact 1-1734839-8 and bottom-contact substitutes?

A: The contact position determines PCB trace routing and connector mounting orientation. Top-contact connectors (1-1734839-8) route signals from above the board surface, while bottom-contact connectors (0528921833, FH12-18S-0.5SH(55)) route signals from below. This difference requires distinct PCB layout designs and cannot be interchanged without redesign.

Q: Are the Molex 0528921833 and Hirose FH12-18S-0.5SH(55) interchangeable with each other?

A: Both connectors feature bottom-contact configuration, 18 positions, 0.50mm pitch, and equivalent current ratings (0.5A). However, the Molex part is obsolete while the Hirose part is active. The Hirose connector is preferred for new designs due to active product status and extended temperature range (-40°C to 85°C).

Q: What voltage rating should be considered when selecting a substitute?

A: The 1-1734839-8 features a 250V rating, while both substitute parts (Molex and Hirose) are rated at 50V. Applications requiring voltages above 50V must use the primary TE Connectivity part. Applications operating at 50V or below may use substitute parts if other parameters align.

Q: Does the locking mechanism difference (Slide Lock vs. Flip Lock) affect compatibility?

A: Locking mechanism differences affect connector operation and mating procedures but do not prevent electrical or mechanical substitution. Slide lock (1-1734839-8) and flip lock (0528921833, FH12-18S-0.5SH(55)) mechanisms require different actuation methods. Operator training and assembly procedure updates are necessary when switching between mechanism types.

Q: Are all three connectors RoHS3 compliant?

A: Yes, all three connectors (1-1734839-8, 0528921833, and FH12-18S-0.5SH(55)) maintain ROHS3 compliance. All parts feature UL94 V-0 flammability ratings and unlimited MSL (Moisture Sensitivity Level 1), ensuring compatibility with standard manufacturing and storage conditions.

Q: What is the significance of the contact finish difference (Gold vs. Tin Bismuth)?

A: Contact finish affects corrosion resistance and long-term reliability. Gold plating (1-1734839-8, FH12-18S-0.5SH(55)) provides superior corrosion resistance and is preferred for high-reliability applications. Tin bismuth finish (0528921833) offers cost reduction but reduced corrosion protection. Selection depends on application environment and reliability requirements.

Q: Can the FH12-18S-0.5SH(55) be used in applications previously designed for the 1-1734839-8?

A: Substitution requires verification of three critical factors: (1) PCB layout compatibility with bottom-contact configuration, (2) application voltage requirements not exceeding 50V, and (3) acceptance of flip lock mechanism operation. If all three factors are satisfied, the Hirose connector is suitable for active product designs.

Q: What is the current inventory status for each connector?

A: The 1-1734839-8 (TE Connectivity) has 1092 pieces in stock. The FH12-18S-0.5SH(55) (Hirose) has 3682 pieces in stock. The 0528921833 (Molex) has 1479 pieces in stock. Inventory levels should be verified with suppliers for current availability.