Industrial / Heat Sinks
SRQ-HJ-20
The SRQ-HJ-20 (SRQ-HJ-20) is an industrial heat sink with an elongated fin profile engineered for applications requiring extended thermal path length and high heat capacity. Its anodized aluminum construction resists corrosion and improves emissivity for enhanced radiative cooling in sealed enclosures. The SRQ-HJ-20 is ideal for outdoor industrial equipment, railway electronics, and power distribution modules exposed to variable ambient conditions.
Key Features
- Elongated fin profile engineered for applications requiring extended thermal path length
- High aspect ratio fins maximize surface area in length-constrained installations
- Optimized for low-velocity longitudinal airflow along the fin channel direction
- Extruded construction allows custom length cutting for system-specific integration
- Consistent cross-section profile ensures predictable thermal resistance per unit length
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-HJ-20 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
Thermal management of linear power amplifier transistor arrays
Cooling of distributed power devices along PCB card edges
Heat dissipation for elongated power bus bar assemblies
Thermal control in rack-mounted linear power supply chassis
Passive cooling of LED driver arrays in industrial lighting systems
Frequently Asked Questions
What airflow direction is optimal for the SRQ-HJ-20's elongated fin profile?
The SRQ-HJ-20 is optimized for airflow directed longitudinally along the fin channels, parallel to the length of the heat sink. This orientation maximizes the boundary layer development length and convective heat transfer coefficient. Cross-flow configurations are possible but will yield higher thermal resistance.
Can the SRQ-HJ-20 be cut to a specific length for custom applications?
Yes. The extruded aluminum construction of the SRQ-HJ-20 allows it to be cut to custom lengths using standard aluminum cutting tools. The thermal resistance scales approximately linearly with length, so shorter sections will have proportionally higher resistance per unit. Deburr all cut surfaces before installation.
How is thermal resistance per unit length specified for the SRQ-HJ-20?
For elongated extrusion heat sinks, thermal resistance is typically specified in °C·cm/W or °C·in/W, allowing engineers to calculate total resistance based on the installed length and number of mounted devices. Contact CZT for the specific thermal resistance per unit length data for the SRQ-HJ-20 under your target airflow conditions.
SRQ-HJ-20 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.