Industrial / Heat Sinks
SRQ-XJ-29
The SRQ-XJ-29 is an industrial heat sink with a profile suited for both natural convection and low-velocity forced-air cooling setups. Precision-machined mounting surfaces ensure reliable contact with power devices for consistent thermal transfer. Commonly found in variable frequency drives, signal amplifiers, and industrial relay systems.
Key Features
- Dual-mode profile supports both natural convection and forced-air cooling
- Extruded aluminum fin structure optimized for low-velocity airflow performance
- Anodized surface finish improves emissivity and corrosion resistance
- Versatile mounting options for horizontal and vertical PCB orientations
- Consistent thermal performance across wide industrial temperature ranges
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-29 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
Power electronics in ventilated industrial enclosures
Variable frequency drives with low-speed cooling fans
Thermal management in telecom rectifier modules
Cooling of gate driver boards in inverter systems
Industrial automation controllers with passive or assisted airflow
Frequently Asked Questions
How does the SRQ-XJ-29 perform when transitioning from natural to forced-air convection?
The SRQ-XJ-29 fin profile is specifically shaped to benefit from even low-velocity airflow (1–2 m/s), providing a meaningful reduction in thermal resistance compared to purely passive operation. This makes it well-suited for enclosures with low-speed fans or natural chimney-effect ventilation.
Can the SRQ-XJ-29 be used in vertically mounted configurations?
Yes. The fin orientation is designed to support vertical mounting, which promotes natural convective airflow along the fin channels. Vertical installation is recommended for passive-only deployments to maximize buoyancy-driven airflow and minimize junction-to-ambient thermal resistance.
What surface treatment does the SRQ-XJ-29 use?
The SRQ-XJ-29 features an anodized aluminum surface that enhances thermal emissivity for improved radiative heat transfer, while also providing protection against oxidation and mild chemical exposure common in industrial environments.
SRQ-XJ-29 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.