PCB connection reliability often comes down to the contact components themselves. Pogo pins have earned their place in electronics design precisely because they handle repeated mating cycles, compensate for slight misalignments, and maintain consistent contact force over time.
For designs where mechanical strength and long-term stability are the priority, through-hole pogo pin connectors offer a distinct advantage over surface-mount alternatives. The through-hole mounting style anchors the pin directly into the PCB, making it far more resistant to lateral stress and vibration than a pad-soldered component.
This guide covers ten strong options worth considering, plus what to look for when specifying them for your application.
Why Through Hole Mounting Matters for Pogo Pins
Surface-mount pogo pins work well in compact, low-stress environments. But when the connector faces repeated mechanical engagement, cable tension, or vibration, the solder joint on an SMD pin becomes a weak point.
Through-hole mounting solves this by running the pin body through the board and soldering it on the underside. The mechanical load transfers to the PCB substrate rather than sitting entirely on a surface pad. This makes through-hole designs the preferred choice for:
Test fixtures and burn-in equipment with high cycle counts
Industrial connectors subject to vibration or shock
Battery contact systems in handheld devices
Wearable electronics requiring secure, repeatable connections
Medical diagnostic equipment needing consistent signal integrity
The tradeoff is that through-hole components require drilled holes in the PCB, which adds a small amount to board fabrication cost. For most applications where durability matters, that cost is easily justified.
10 Through Hole Pogo Pins Worth Considering
1. Promax
Business: Promax Pogo Pin
Spokesperson: Gavin
Position: Manager
Phone: (765) 705-7361
Email: tonyhoo@promaxpogopin.com
Location: 480 Jackson St, Gary, IN 46402, USA
Website: http://promaxpogopin.com/
Promax manufactures a dedicated range of through-hole pogo pin connectors designed for industrial and consumer electronics applications. Their pins are available in multiple plating options including gold over nickel, which improves contact resistance and extends service life. The spring mechanism is engineered for high cycle durability, and the through-hole body provides stable PCB retention under mechanical stress.
2. Mill-Max Series 800
Mill-Max is one of the most recognized names in precision connector manufacturing. Their Series 800 through-hole spring-loaded pins offer tight dimensional tolerances and are available in a wide range of current ratings and travel distances. They're commonly specified for test and measurement applications where consistency across thousands of cycles is non-negotiable.
3. Harwin Datamate Pogo Pins
Harwin produces through-hole pogo pins aimed at high-reliability applications including defense and aerospace. Their connectors meet demanding environmental specifications and are designed to maintain contact integrity across temperature extremes. If your application involves harsh conditions, Harwin is worth evaluating.
4. Yokowo Spring Probes
Yokowo has a long history in spring contact technology and offers through-hole spring probes in fine pitches suitable for high-density PCB layouts. Their products are frequently used in semiconductor testing and precision measurement environments where pitch and contact force need to be tightly controlled.
5. Everett Charles Technologies (ECT) Probes
ECT, now part of Smiths Interconnect, produces spring contact probes and receptacles widely used in PCB test fixtures. Their through-hole receptacles are designed to accept standard probe pins, giving engineers flexibility when designing in-circuit test setups. Material quality and plating consistency are strong points.
6. Interconnect Devices Inc. (IDI) Spring Probes
IDI offers a broad catalog of spring-loaded contacts including through-hole configurations for both testing and permanent assembly use. Their engineering support is well-regarded, and they offer custom options for non-standard pitch requirements or unusual travel distances.
7. Coda Systems Pogo Pins
Coda Systems produces through-hole pogo pins targeting prototype and production test environments. Their pins are available with various tip geometries to suit different PCB pad configurations, and they offer reasonable lead times for standard catalog items.
8. Qualtek Electronics Spring Contacts
Qualtek offers spring-loaded contacts suitable for battery connections and charging interfaces. Their through-hole variants are stocked through major distributors, which helps when sourcing in smaller quantities or for maintenance and repair applications.
9. Preci-Dip Spring-Loaded Contacts
Preci-Dip manufactures precision connector components including through-hole spring contacts used in medical devices, instrumentation, and consumer electronics. Their products are available through distribution networks in Europe and North America and are specified where dimensional accuracy is critical.
10. CFM Tech Pogo Pin Connectors
CFM Tech supplies pogo pin connectors including through-hole types to OEM customers across Asia and globally. They offer competitive pricing on standard configurations and support custom specifications for higher-volume projects where off-the-shelf products don't fully fit the design.
Key Specifications to Compare When Selecting Through Hole Pogo Pins
Not all pogo pins perform the same way. Before finalizing a part, compare these parameters across your shortlist.
Current Rating
Pogo pins used for power delivery need adequate current capacity. Signal pins carry low current and have more flexibility, but power contacts should be derated for thermal safety, especially in enclosed assemblies.
Contact Resistance
Lower contact resistance means cleaner signal transmission and less resistive heating. Gold plating over nickel is the standard choice for minimizing contact resistance across the life of the connection. According to IPC standards for PCB assemblies, contact integrity is a core reliability requirement for electronic assemblies in demanding environments.
Spring Travel and Force
The working travel of the pin determines how much compression occurs during mating. Spring force needs to be high enough to maintain reliable contact but not so high that it stresses the mating surface or connector housing over time.
Cycle Life Rating
Manufacturer-stated cycle life varies widely. Test fixture applications may require ratings above one million cycles. Permanent assembly contacts have less demanding requirements but should still be specified above the expected service life.
Hole Diameter and Pitch
The through-hole diameter must match your PCB drill specification. Pitch compatibility matters when using pogo pins in multi-contact arrays or connectors. Confirm both before placing orders.
Through Hole vs. SMD Pogo Pins: A Quick Comparison
Feature | Through Hole | Surface Mount |
Mechanical strength | High | Moderate |
PCB fabrication | Requires drilled holes | Standard pads only |
Vibration resistance | Excellent | Limited |
Assembly process | Wave or manual solder | Reflow compatible |
Best for | Industrial, test, medical | Consumer, space-constrained |
Common Applications
Through hole pogo pins appear across a wide range of product categories:
Test fixtures: High-cycle probe contact for in-circuit and functional testing
Wearables: Charging contacts on smartwatches and fitness trackers
Medical devices: Reliable battery and module interfaces
Industrial equipment: Panel-mount connectors subject to vibration
Consumer electronics: Docking connectors and accessory interfaces
For design engineers looking at contact interface best practices, the IPC-7711/7721 rework and repair standard provides guidance on through-hole component handling and soldering quality.
FAQs
What is a through hole pogo pin?
It's a spring-loaded contact pin mounted through a drilled hole in a PCB, soldered on the underside for mechanical stability and electrical connection.
How many cycles can through hole pogo pins handle?
It varies by manufacturer, but quality pins typically rate from 10,000 to over 1,000,000 cycles depending on the design and application.
What plating is best for pogo pins?
Gold over nickel is the most common choice. It offers low contact resistance and good corrosion resistance over extended service life.
Can through hole pogo pins carry power as well as signals?
Yes. Select pins rated for the required current. Many are available in configurations suited for both signal and moderate power delivery.
Are custom pitch configurations available?
Most manufacturers offer custom options for volume orders. Standard pitches are typically 1.0mm, 1.27mm, and 2.54mm.
Choosing the Right Pin for Your Design
The ten options above span a range of price points, availability, and performance levels. For critical applications, prioritize suppliers with documented cycle life ratings, consistent plating quality, and technical support for specification questions.
Requesting samples before finalizing a design is always worthwhile with contact components. A pin that tests well in your specific fixture or housing geometry before you commit to production saves significant rework cost later.
Through-hole mounting adds a modest step to PCB fabrication, but the improvement in mechanical retention and long-term contact reliability is worth it for any application where connections are made and broken repeatedly, or where vibration and stress are part of the operating environment.
