SL-104-G-19 SAMTEC Connector (Other) In Stock
SAMTEC SL-104-G-19 is a 4-position single-row low-profile screw machine socket strip with 0.100" (2.54 mm) pitch, beryllium copper female contacts plated with gold (30 µin) over nickel (50 µin), rated for reliable signal interconnects in instrumentation and test applications. Available in stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- SL-104-G-19 Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4-position single-row 0.100" (2.54 mm) pitch low-profile socket strip compatible with standard DIP and pin-header mating pins
- Beryllium copper contacts with 30 µin gold over 50 µin nickel plating deliver low contact resistance and long insertion life
- Screw machine contact construction provides tighter dimensional tolerance than stamped contacts for superior spring force retention
- Low-profile body height minimizes vertical clearance requirement, ideal for space-constrained PCB assemblies and test sockets
Applications
The SL-104-G-19 is used as a low-profile single-row socket in bench-top test fixtures, prototype boards, and instrumentation daughter cards where 4 signal lines must be connected using standard 0.100" pitch through-hole pins. Its gold-plated beryllium copper screw machine contacts are particularly well suited for high-reliability laboratory instruments, avionics test adapters, and edge-connector break-out applications requiring long service life with minimal contact resistance drift.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 1Week |
| YTEOL | 9.1 |
| Additional Feature | LOW PROFILE |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (30) OVER NICKEL (50) |
| Contact Finish Termination | Gold (Au) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | BERYLLIUM COPPER |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| JESD-609 Code | e4 |
| MIL Conformance | NO |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number of Rows Loaded | 1 |
| Option | GENERAL PURPOSE |
| Terminal Pitch | 2.54mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 4 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Malaysia, USA |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SL-104-G-19:
suggested
suggested
Board Connector, 4 Contact(s), 1 Row(s), Female, Straight, Solder Terminal, Socket
Frequently Asked Questions
What contact material and plating specification does the SL-104-G-19 use, and why does that matter for low-level signals?
The SL-104-G-19 uses beryllium copper contacts plated with 30 µin of gold over 50 µin of nickel. Beryllium copper provides superior spring force retention compared to phosphor bronze, maintaining consistent contact pressure over thousands of insertion cycles. The 30 µin gold plating keeps contact resistance below 20 mΩ even after prolonged use, which is critical for low-level analog and high-frequency digital signals below 100 mV where contact resistance variations would introduce measurable signal error.
How does the screw machine construction of SL-104-G-19 contacts differ from stamped contacts in alternative socket strips?
Screw machine contacts in the SL-104-G-19 are turned from solid rod stock on a CNC lathe, resulting in tighter dimensional tolerances of ±0.002" compared to ±0.005" for stamped contacts. This precision ensures uniform contact force across all 4 positions and reduces the risk of intermittent connections caused by dimensional variation. Screw machine sockets also exhibit higher normal force—typically 150 gf to 200 gf per contact—which improves retention of mating pins at 0.100" pitch in vibration-prone instrument and avionics environments.
Can the SL-104-G-19 mate directly with standard 0.025" square-post DIP headers or round-pin test probes?
Yes. The SL-104-G-19 socket strip is designed to accept standard 0.025" square-post male headers commonly used on DIP packages and breadboard-compatible pin strips at 0.100" pitch. The screw machine socket contact diameter is sized to accommodate both 0.025" square posts and 0.025" round-pin test probes, providing a secure 4-position connection with a low-profile above-board height of approximately 4.8 mm (19 sizing variant) for clearance-sensitive PCB assemblies.
In which test and instrumentation scenarios does the low-profile body of SL-104-G-19 provide a measurable advantage?
When a test fixture or prototype board must fit inside an enclosure with a lid-to-PCB clearance of less than 8 mm, the SL-104-G-19 low-profile design—standing approximately 4.8 mm above the PCB surface—allows the lid to close without interference. This is directly relevant in portable field instruments, on-board avionics test adapters, and IC socket daughter cards where a full-height 8.5 mm socket would exceed the available vertical clearance and prevent proper enclosure assembly.
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