QTH-090-04-F-D-A Equivalent & Substitute Parts

Part Overview

The QTH-090-04-F-D-A is a 180-position rectangular connector header manufactured by Samtec Inc. as part of the Q Strip® QTH series. This surface mount connector features outer shroud contacts with gold plating and is designed for high-density interconnect applications. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative stock sources.

Substiute Parts

QTH-090-04-F-D-A

Samtec Inc.In Stock: 825QTH-090-04-F-D-A Datasheet

Current PartRFQ

QTH-090-04-L-D-A

Samtec Inc.In Stock: 1483QTH-090-04-L-D-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The QTH-090-04-L-D-A qualifies as a direct substitute for the QTH-090-04-F-D-A based on the following critical parameters that determine functional interchangeability:

• Number of Positions: Both parts feature 180 positions
• Pitch: Both maintain 0.020" (0.50mm) pitch spacing
• Number of Rows: Both are configured with 2 rows
• Connector Type: Both are Header, Outer Shroud Contacts
• Mounting Type: Both are Surface Mount
• Contact Finish: Both feature Gold plating
• Height Above Board: Both measure 0.600" (15.24mm)
• Mated Stacking Heights: Both specify 16mm
• Features: Both include Board Guide and Ground Bus (Plane)
• Series: Both belong to Q Strip® QTH series
• Compliance: Both are ROHS3 Compliant with MSL 1 rating

The primary difference between these parts is the contact finish thickness specification, which does not affect mechanical or electrical interchangeability for standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both the QTH-090-04-F-D-A and QTH-090-04-L-D-A maintain Active product status with identical compliance certifications. Selection between these parts should be based on inventory availability and supply chain requirements. The QTH-090-04-L-D-A currently maintains higher inventory levels (1443 pcs) compared to the QTH-090-04-F-D-A (724 pcs), making it a viable alternative for applications requiring immediate availability. Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Are QTH-090-04-F-D-A and QTH-090-04-L-D-A mechanically interchangeable?

A: Yes. Both parts share identical mechanical specifications including 180 positions, 0.020" pitch, 2-row configuration, 0.600" height above board, and 16mm mated stacking height. They are mechanically interchangeable in all standard applications.

Q: What is the difference between these two part numbers?

A: The primary difference is contact finish thickness. The QTH-090-04-F-D-A specifies 3.00µin (0.076µm) gold plating, while the QTH-090-04-L-D-A specifies 10.0µin (0.25µm) gold plating. All other electrical and mechanical parameters are identical.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I use QTH-090-04-L-D-A as a direct replacement for QTH-090-04-F-D-A in existing designs?

A: Yes. The parts are functionally equivalent across all critical parameters including connector type, mounting method, pitch, position count, and contact finish material. No design modifications are required.

Q: What is the packaging format for both parts?

A: Both parts are supplied in Tray packaging as new original stock.