TST-109-03-H-D SAMTEC Connector (Other) In Stock

Name: TST-109-03-H-D
Brand: SAMTEC
SKU: TST-109-03-H-D
Availability: InStock

SAMTEC TST-109-03-H-D is an 18-position dual-row shrouded PCB header with 0.100" pitch and 30 µin gold-over-nickel contacts for reliable through-hole board connections. Measures 1.2" body length and suits board-to-cable and board-to-board applications in industrial and embedded systems. Available in stock with worldwide shipping.

ACTIVEConnectorVerified Jul 2026

Package / Visual Reference

TST-109-03-H-DOther

Quick Facts

Manufacturer: SAMTEC
Package: Other
Pin Count: 18
Lifecycle: ACTIVE
Datasheet: TST-109-03-H-D Datasheet PDF
Category: Connector
Price: From $1.9100(MOQ 1000)
Temp Range: -55.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of TST-109-03-H-D?

18-position dual-row configuration at 0.100" (2.54mm) pitch with 30 µin gold-over-nickel contact finish for low-resistance, long-life mating
Shrouded housing with keyed polarization prevents mis-insertion in dual-row board-to-cable applications
Through-hole mounting with 1.2" body length providing robust mechanical retention in vibration-prone industrial and embedded system enclosures

What is TST-109-03-H-D used for?

The TST-109-03-H-D is used in industrial control systems, embedded computing boards, and test equipment requiring reliable 18-position dual-row board-to-cable or board-to-board connectivity at 0.100" pitch. Its shrouded, keyed housing prevents incorrect cable insertion in field-serviced equipment, while gold-plated contacts ensure consistent signal integrity over thousands of mating cycles. This header is a standard choice for ribbon cable interfaces and wire-to-board connectors in automation, robotics, and instrumentation designs.

What are the specifications of TST-109-03-H-D?

YTEOL	9.1
Body Breadth	0.365inch
Body Depth	0.365inch
Body Length	1.2inch
Connector Type	BOARD CONNECTOR
Contact Finish Mating	GOLD (30) OVER NICKEL
Contact Gender	MALE
Contact Pattern	RECTANGULAR
Contact Style	SQ PIN-SKT
DIN Conformance	NO
Filter Feature	NO
IEC Conformance	NO
Insulation Resistance	5000000000Ω
Insulator Color	BLACK
Insulator Material	GLASS FILLED POLYESTER
MIL Conformance	NO
Mating Contact Pitch	0.1inch
Mating Contact Row Spacing	0.1inch
Mating Information	MULTIPLE MATING PARTS AVAILABLE
Mixed Contacts	NO
Mounting Option 1	LOCKING
Mounting Style	STRAIGHT
Mounting Type	BOARD
Number Of Connectors	ONE
Number Of PCB Rows	2
Number of Rows Loaded	2
Option	GENERAL PURPOSE
PCB Contact Pattern	RECTANGULAR
PCB Contact Row Spacing	2.54mm
Plating Thickness	30u inch
Polarization Key	POLARIZATION NOTCH
Terminal Length	0.565inch
Terminal Pitch	2.54mm
Termination Type	SOLDER
Total Number of Contacts	18
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8536.69.40.40

Where can I find the TST-109-03-H-D datasheet?

TST-109-03-H-D Datasheet Download

Official datasheet from SAMTEC

What are equivalent replacements for TST-109-03-H-D?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What contact finish does the TST-109-03-H-D use, and how does it affect connector lifespan?

The TST-109-03-H-D uses 30 µin gold over nickel contact finish, which provides corrosion resistance and maintains low contact resistance below 20 milliohms over a rated mating cycle count, extending the connector's service life in industrial and test equipment environments.

For which board-to-cable applications is the 18-position dual-row TST-109-03-H-D well suited?

Ribbon cable interfaces, IDC cable assemblies, and wire-to-board harnesses in industrial automation, robotics, and embedded computing boards benefit from the TST-109-03-H-D, since 18 dual-row pins at 0.100" pitch route up to 36 signals with the shrouded housing providing polarized mechanical keying.

How does the 1.2" body length of TST-109-03-H-D influence PCB layout spacing requirements?

The 1.2" (30.5 mm) body length of the TST-109-03-H-D occupies a defined board area along the connector axis, requiring a minimum clearance of approximately 13 mm width for the dual-row 0.100" pitch footprint, and engineers must reserve this zone free from tall adjacent components to accommodate mating cable connectors.

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AvailabilityIn Stock

Reference Price (USD)

From $1.9100

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1000+	$3.1800	$3180.00
2500+	$2.5500	$6375.00
5000+	$1.9100	$9550.00

pcs

Unit price: $3.1800 · Total: $3180.00

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”

James Wright

Supply Chain Director, CircuitPro Ltd, UK

TST-109-03-H-D SAMTEC Connector (Other) In Stock

What are the key features of TST-109-03-H-D?

What is TST-109-03-H-D used for?

What are the specifications of TST-109-03-H-D?

Compliance & Regulatory

Where can I find the TST-109-03-H-D datasheet?

What are equivalent replacements for TST-109-03-H-D?

Frequently Asked Questions

What contact finish does the TST-109-03-H-D use, and how does it affect connector lifespan?

For which board-to-cable applications is the 18-position dual-row TST-109-03-H-D well suited?

How does the 1.2" body length of TST-109-03-H-D influence PCB layout spacing requirements?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About SAMTEC

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