产品

BQUQ TO-220晶体管散热器 | 精密CNC加工,中国制造

这款TO-220晶体管散热器是一款CNC加工铝制散热器,专为TO-220封装设计,平面度公差为0.02 mm,表面光洁度为Ra 0.8 µm,确保最大热传导效率。产品从我们东莞工厂发货,交期12天,硬度为80 HB(T6时效处理),可直接替换冲压件,在配合度和散热性能方面均优于冲压产品。每个产品均经过去毛刺和清洁处理,无需二次加工即可直接进入您的装配线。 为什么CNC加工在TO-220热接触方


分享此产品


获取报价

产品详情

这款TO-220晶体管散热器是一款CNC加工铝制散热器,专为TO-220封装设计,平面度公差为0.02 mm,表面光洁度为Ra 0.8 µm,确保最大热传导效率。产品从我们东莞工厂发货,交期12天,硬度为80 HB(T6时效处理),可直接替换冲压件,在配合度和散热性能方面均优于冲压产品。每个产品均经过去毛刺和清洁处理,无需二次加工即可直接进入您的装配线。

为什么CNC加工在TO-220热接触方面优于冲压

冲压散热器在安装孔处常出现弯曲或翘曲,导致晶体管引脚与散热器之间产生气隙。空气是极差的导热体——会增加高达0.5 °C/W的热阻。我们的CNC加工底座是从实心铝坯料切割而成,而非模具冲压成型。这使得接触表面在0.02 mm范围内达到光学级平整,相比冲压件热阻降低30%。安装孔采用钻孔和铰孔工艺,而非冲孔,确保引脚完全贴合、无晃动。如果您的设计依赖于可预测的结温,这就是可靠运行10年与18个月现场失效之间的区别。

我们使用的材料与热处理工艺

我们常备三种材料等级:6061-T6、6063-T5和2024-T4。对于大多数TO-220应用,6063-T5是最佳选择——其导热系数为209 W/m·K,且阳极氧化后表面清洁,可实现电气绝缘。如果您需要在强振动环境中获得更高强度,我们可改用6061-T6(180 W/m·K),硬度可达95 HB。所有挤压型材均来自认证工厂,随后我们在内部进行固溶热处理和时效处理,以确保精确达到所需状态。任何硬度偏差超过±3 HB的批次均被拒收。每批货物均附带原材料证书。

真正重要的表面处理与阳极氧化选项

裸铝的辐射发射率约为0.05——对热辐射几乎无效。我们提供透明阳极氧化(Class 2级,厚度18 µm),可将发射率提升至0.85,并增加腐蚀防护层。如果您需要电气隔离,我们可提供硬质阳极氧化(25 µm,介电强度1200 V)。我们的标准机加工表面为接触面Ra 0.8 µm、散热片Ra 1.6 µm。对于高频开关电路,我们可增加黑色阳极氧化,使热辐射效率再提高5%。订单超过500件时,透明阳极氧化不额外收费。

规格参数数值
可选材料6061-T6、6063-T5、2024-T4铝
标准尺寸(宽×高×深)20×10×6 mm 至 50×40×25 mm
硬度(T6时效状态)80–95 HB
平面度公差(接触面)±0.02 mm
跳动(安装孔至底面)≤0.05 mm
表面光洁度(接触面)Ra 0.8 µm
阳极氧化厚度18 µm透明、25 µm硬质、可选黑色
导热系数180–209 W/m·K
交期标准尺寸12天,加急7天
起订量无起订量——单件可订

跳动控制——如何确保您的晶体管引脚保持方正

跳动是TO-220安装的大敌。如果安装孔轴线偏差哪怕0.1 mm,螺钉扭矩就可能使晶体管外壳开裂。我们的CNC工艺可实现孔轴线与底面之间0.05 mm或更小的跳动。我们通过单次装夹实现这一精度——坯料固定在精密虎钳中,底面铣削、钻孔和铰孔在同一装夹中完成。无重复装夹意味着无累积误差。我们每10件使用分辨率为0.01 mm的千分表检测一次跳动。任何一件超过0.05 mm,整批产品将重新检验并返工。

每批出货前的检验流程

每批产品均经过三步检查。首先,三坐标测量机(CMM)对每100件中的5件样品测量平面度、孔位和垂直度。其次,表面粗糙度仪确认接触面的Ra值。第三,硬度计对每箱随机抽取2件检测HB硬度。我们拍摄检验报告照片并在货物离厂前通过电子邮件发送给您。对于关键航空航天或电动汽车应用,我们可免费提供完整的材料证书和阳极氧化厚度报告。这是精密制造,而非批量猜测。

异形尺寸与安装方式的定制

标准TO-220散热器在2.54 mm间距上有一个4.2 mm孔。但您的PCB可能有不同的孔位布局——可能是偏置引脚、更长的底座,或螺纹嵌件而非通孔。我们可以根据您的图纸修改任何标准尺寸:增加第二个孔、改变散热片间距,或加工用于弹簧夹的定制槽。我们的CNC车床和4轴铣床可处理复杂几何形状,无需模具费用。将您的STEP文件或手绘草图发送给我们,我们将在24小时内返回DFM(可制造性设计)建议。定制形状的交期为15天,起订量仍为零。我们还提供带滚花底座的压配版本,适用于免焊接安装。

生产线包装与可追溯性

产品采用防静电ESD袋包装,每内盒100件,每外箱500件。每个外箱贴有标签,标明批号、日期代码和材料炉号。如果您订购5000件,我们将分为10个密封箱,方便您按需发放至生产线,无需拆散整箱。接触面之间用泡沫片隔开,防止运输途中划伤。订单超过2000件时,我们免费预装导热垫(3M 8810)——为您的装配线节省一道人工工序。关于正确的安装扭矩,请参阅我们的CNC刀具选择指南,了解刀具刃口几何形状如何影响孔质量。

为什么我们的12天交期优于本地供应商

大多数散热器供应商报价4周,因为他们将阳极氧化和机加工外包。我们在同一工厂内完成所有工序:CNC铣削、去毛刺、抛光、阳极氧化和检验。我们的主轴利用率为85%,实行两班制。对于标准TO-220尺寸,单件加工周期为45秒。这意味着1000件订单需要12.5小时的机加工时间,我们可在收到PO后3天内排入生产。剩余9天用于阳极氧化、检验和包装。如果您需要更快,我们提供7天加急服务,收取5%附加费。这种速度只有在我们不依赖第三方表面处理商的情况下才能实现。

这款散热器的最低起订量是多少?

无起订量——您可以订购单件用于打样,我们将执行与10000件订单相同的公差和检验标准。

能否根据我的图纸匹配特定的安装孔或散热片布局?

可以,将您的2D或3D文件发送给我们;我们可在15天内加工任何定制孔距、引脚宽度或散热片几何形状,200件以上订单的单件价格保持不变。

如何确保接触面在阳极氧化过程中保持平整?

我们在阳极氧化槽中垂直挂架产品,确保接触面不与挂架接触,并在阳极氧化后重新检验平面度——任何超过0.03 mm的产品在发货前重新加工。

标准1000件订单的实际交期是多少?

标准交期为PO确认后12天,包括5天CNC机加工、3天阳极氧化、2天最终检验和包装;对于紧急订单,我们可压缩至7天。

如需了解更多关于我们如何保持严格尺寸的信息,请阅读我们的CNC加工公差指南。如果您准备在样机中测试这款TO-220晶体管散热器,请立即将您的图纸发送给我们。我们将在12小时内返回正式报价,包括您所需数量和表面处理的确切价格。发送邮件至sc@bquq.com或WhatsApp +86 13713157787。无起订量、无模具费用,从东莞工厂全球发货。


相关产品

参数

参数能力
材料AL6063/6061/5052,纯铜C1100,铜铝复合
工艺挤压、CNC加工、铲齿、锻造、压铸、冲压翅片
翅片类型挤压翅片、针翅、铲齿翅片、折叠翅片、粘合翅片、热管、均温板
表面处理黑色阳极氧化、本色阳极氧化、镀镍、粉末喷涂
尺寸范围最大1500 x 400 x 300 mm
热测试每批次提供热阻和散热数据
打样5-7天,样品无最小起订量
检验三坐标测量仪、热阻测试仪,每批次提供完整报告

联系我们报价
获取报价
我们使用cookie来改善您的在线体验。继续浏览本网站即表示您同意我们使用cookie

Cookies

Please read our Terms and Conditions and this Policy before accessing or using our Services. If you cannot agree with this Policy or the Terms and Conditions, please do not access or use our Services. If you are located in a jurisdiction outside the European Economic Area, by using our Services, you accept the Terms and Conditions and accept our privacy practices described in this Policy.
We may modify this Policy at any time, without prior notice, and changes may apply to any Personal Information we already hold about you, as well as any new Personal Information collected after the Policy is modified. If we make changes, we will notify you by revising the date at the top of this Policy. We will provide you with advanced notice if we make any material changes to how we collect, use or disclose your Personal Information that impact your rights under this Policy. If you are located in a jurisdiction other than the European Economic Area, the United Kingdom or Switzerland (collectively “European Countries”), your continued access or use of our Services after receiving the notice of changes, constitutes your acknowledgement that you accept the updated Policy. In addition, we may provide you with real time disclosures or additional information about the Personal Information handling practices of specific parts of our Services. Such notices may supplement this Policy or provide you with additional choices about how we process your Personal Information.


Cookies

Cookies are small text files stored on your device when you access most Websites on the internet or open certain emails. Among other things, Cookies allow a Website to recognize your device and remember if you've been to the Website before. Examples of information collected by Cookies include your browser type and the address of the Website from which you arrived at our Website as well as IP address and clickstream behavior (that is the pages you view and the links you click).We use the term cookie to refer to Cookies and technologies that perform a similar function to Cookies (e.g., tags, pixels, web beacons, etc.). Cookies can be read by the originating Website on each subsequent visit and by any other Website that recognizes the cookie. The Website uses Cookies in order to make the Website easier to use, to support a better user experience, including the provision of information and functionality to you, as well as to provide us with information about how the Website is used so that we can make sure it is as up to date, relevant, and error free as we can. Cookies on the Website We use Cookies to personalize your experience when you visit the Site, uniquely identify your computer for security purposes, and enable us and our third-party service providers to serve ads on our behalf across the internet.

We classify Cookies in the following categories:
 ●  Strictly Necessary Cookies
 ●  Performance Cookies
 ●  Functional Cookies
 ●  Targeting Cookies


Cookie List
A cookie is a small piece of data (text file) that a website – when visited by a user – asks your browser to store on your device in order to remember information about you, such as your language preference or login information. Those cookies are set by us and called first-party cookies. We also use third-party cookies – which are cookies from a domain different than the domain of the website you are visiting – for our advertising and marketing efforts. More specifically, we use cookies and other tracking technologies for the following purposes:

Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.

Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.

Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.

How To Turn Off Cookies
You can choose to restrict or block Cookies through your browser settings at any time. Please note that certain Cookies may be set as soon as you visit the Website, but you can remove them using your browser settings. However, please be aware that restricting or blocking Cookies set on the Website may impact the functionality or performance of the Website or prevent you from using certain services provided through the Website. It will also affect our ability to update the Website to cater for user preferences and improve performance. Cookies within Mobile Applications

We only use Strictly Necessary Cookies on our mobile applications. These Cookies are critical to the functionality of our applications, so if you block or delete these Cookies you may not be able to use the application. These Cookies are not shared with any other application on your mobile device. We never use the Cookies from the mobile application to store personal information about you.

If you have questions or concerns regarding any information in this Privacy Policy, please contact us by email at . You can also contact us via our customer service at our Site.