Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
RUILON SMBJ33A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- RUILON SMBJ33A
- Type
- RUILON
- Minimum package
- 3000
Technical parameters
- Electronic Component
- RUILON
- Electronic Component
- SMBJ33A
- Electronic Component
- 1
- Package
- DO-214AA(SMB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.232g
- Electronic Component
- 1
- Electronic Component
- BM0227699988
- Operating Temperature
- 55℃~+150℃
- Voltage
- 53.3V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 42.2V
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ33A 产品概述
一、产品简介
SMBJ33A 是 RUILON（瑞隆源）推出的一款单向瞬态电压抑制器（TVS），封装为 DO-214AA（SMB）。器件用于抑制电源线上与信号线上瞬态过电压事件，将尖峰电压钳制在安全范围内，保护下游电子元件免受浪涌与静电放电损害。
二、主要参数
- 极性：单向
- 反向截止电压 Vrwm：33 V
- 钳位电压（Vc）：53.3 V
- 击穿电压（Vbr）：42.2 V
- 峰值脉冲电流 Ipp：11.3 A（10/1000 μs）
- 峰值脉冲功率 Ppp：600 W（10/1000 μs）
- 反向电流 Ir：1 μA（在 Vrwm 条件下）
- 工作温度范围：-55 ℃ ~ +150 ℃
- 防护等级：符合 IEC 61000-4-4（EFT）与 IEC 61000-4-2（ESD）
三、特性与优势
- 单向结构对直流供电与单极信号线有优良的钳制效果，导通迅速、响应时间短。
- 高能量吸收能力（600 W @10/1000 μs）适合工业浪涌与雷击残波类工况。
- 低反向漏电（1 μA）有利于对待机功耗敏感的系统。
- 宽工作温度与 SMB 封装适配现场安装与自动贴片工艺，可靠性高。
四、典型应用
- 工业控制电源浪涌保护（24 V~33 V 系统）
- 通信设备与接口保护（供电线、电源轨）
- 汽车电子的非车规外周护电路（需按车规选型）
- 消费电子、仪器仪表对雷击/静电防护
五、PCB 布局与安装建议
- TVS 两端与被保护节点距离越短越好，走线阻抗与电感要低。
- 将器件接地端焊到大的接地铜箔或接地平面，并在附近布置多盏过孔以降低回流阻抗。
- 若需进一步抑制高频瞬态，可在输入端与 TVS 之间并联小电容或串联阻性元件，但应评估对响应速度的影响。
- 采用推荐的回流焊工艺，遵循制造商的温度曲线以保证焊接可靠性。
六、选型与使用注意事项
- 设计时 Vrwm 应略高于系统工作电压以避免常态下导通；但选得过高则钳位效果下降。
- 钳位电压 53.3 V 为峰值钳制电平，被保护元件需能承受该电压或在配合下游吸收元件后使用。
- 峰值脉冲参数（Ipp、Ppp）基于 10/1000 μs 波形，仅代表单次典型冲击能力，重复脉冲或更快波形需按能量累积与热阻评估。
- 若应用需双向保护，应选用对应的双向 TVS 器件。
七、可靠性与合规
SMBJ33A 满足 IEC 61000-4-2（静电放电）与 IEC 61000-4-4（电快速瞬变）等级要求，适合需要抗干扰与过电压保护的工业与民用场景。为确保长期可靠性，建议在样机阶段做实际浪涌、ESD 与温升试验，验证 PCB 热释放与器件寿命符合系统要求。
如需器件封装图、详细温升曲线或厂方规范（焊接条件、封装尺寸），建议索取 RUILON 的原厂数据手册以进行最终设计确认。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
