Industrial / Heat Sinks
SRQ-XJ-05
The SRQ-XJ-05 is a fin-array heat sink built for natural convection cooling in enclosed industrial enclosures. Its optimized fin geometry maximizes surface area to improve heat transfer without requiring forced airflow. Well suited for PLCs, relay modules, and automation equipment operating in thermally challenging environments.
Key Features
- Fin array geometry optimized for natural convection in enclosed industrial enclosures
- Vertical fin orientation promotes chimney-effect airflow for passive cooling efficiency
- Designed for zero-maintenance operation with no moving parts or active cooling components
- Aluminum extrusion with consistent fin pitch ensures repeatable thermal performance
- Suitable for 24/7 continuous duty operation in sealed or semi-sealed enclosures
Key Specifications
- Product type: heat sink / thermal management component
- Application focus: optical transceiver, networking, power electronics, or industrial electronics thermal management
- Material: aluminum alloy reference; confirm final alloy, temper, and finish during RFQ
- Process note: confirm extrusion, die casting, CNC machining, skiving, bonding, or surface finishing from the customer drawing
- +3 more specs below
Request drawing: This product has local image and specification coverage. Ask sales to confirm the latest drawing revision before sampling or tooling review.
SRQ-XJ-05 Specifications
Product typeheat sink / thermal management component
Application focusoptical transceiver, networking, power electronics, or industrial electronics thermal management
Materialaluminum alloy reference; confirm final alloy, temper, and finish during RFQ
Process noteconfirm extrusion, die casting, CNC machining, skiving, bonding, or surface finishing from the customer drawing
Drawing statusRequest Drawing during RFQ; local PDF not available from the legacy archive
Asset statusOld-site product image available
RFQ checkconfirm dimensions, fin geometry, thermal interface, mounting method, surface finish, packaging, and drawing revision
Typical Applications
Enclosed industrial control panel power device passive cooling
Sealed outdoor equipment power regulation without active ventilation
PLC and HMI internal power supply thermal management in cabinets
Continuous-duty relay and contactor driver board heatsinking
Substation and utility control equipment passive thermal management
Frequently Asked Questions
Why is fin orientation important for the SRQ-XJ-05 in enclosed enclosures?
In enclosed enclosures relying on natural convection, vertical fin orientation is critical. It allows heated air to rise freely along fin channels via the chimney effect, drawing cooler air from below. Horizontal fin orientation traps hot air between fins, significantly increasing effective thermal resistance and reducing cooling efficiency.
How should the SRQ-XJ-05 be positioned inside a sealed enclosure for best performance?
Mount the SRQ-XJ-05 with fins oriented vertically and positioned to allow unobstructed airflow along the full fin length. Avoid placing other components directly above the heatsink that would block rising hot air. Where possible, position the heatsink near the top of the enclosure to maximize the thermal gradient driving natural convection.
Can the SRQ-XJ-05 be used in outdoor or high-humidity environments?
Yes. The anodized aluminum construction of the SRQ-XJ-05 provides good corrosion resistance suitable for high-humidity and outdoor-rated enclosure applications. For direct exposure to condensation or corrosive atmospheres, specify additional protective coatings or ensure the heatsink is housed within an IP-rated enclosure.
SRQ-XJ-05 Details
CategoryIndustrial
SubcategoryHeat Sinks
Naming TemplateProduct name from catalog
BrandCZT
OriginChina
Drawing StatusRequest drawing
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Need a Custom Solution?
CZT offers OEM/ODM services with flexible MOQ. Contact our engineering team for custom connector solutions.