WMSIC Electronic Components

CJ SS38F

ModelSS38F
PackageSMAF
BrandCJ
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

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Technical data

Product details

19 specifications

Core information

Product name
CJ SS38F
Type
CJ
Minimum package
3000

Technical parameters

Electronic Component
CJ
Electronic Component
SS38F
Electronic Component
1
Package
SMAF
Electronic Component
Schottky Diode
Electronic Component
0.062g
Electronic Component
1
Electronic Component
BM0264603907
Current
3A
Diode
1
Current(Ir)
100uA@80V
(Vf)
850mV@3A
Electronic Component
55℃~+150℃
Electronic Component
3000
Voltage Rating(Vr)
80V
Surge Current (Ifsm)
70A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SS38F 肖特基整流二极管产品概述

SS38F是江苏长电(CJ)推出的一款表面贴装肖特基整流二极管,采用SMAF小型化封装,针对中功率、中低压整流场景优化设计,凭借低正向压降、高浪涌耐受能力及宽温适应性,成为电源、车载、家电等领域的常用选型。

一、产品核心定位

SS38F属于中低压肖特基整流管,聚焦3A平均电流、80V反向耐压的应用需求,既保留肖特基“低导通损耗、快恢复”的固有优势,又通过SMAF封装满足高密度电路设计,是替代传统硅整流管、提升电源效率的实用方案。

二、关键电性能参数详解

各参数直接支撑应用价值,核心参数如下:

  1. 正向压降(Vf):850mV@3A
    肖特基核心优势体现为低VF,SS38F在额定3A电流下仅850mV,比普通硅整流管(1.2V+)降低30%导通损耗,可减少电源发热、简化散热(无需大散热片)。
  2. 直流反向耐压(Vr):80V
    满足12V/24V系统(如车载、LED驱动)的反向电压需求,避免工作中反向击穿。
  3. 平均整流电流(IF(AV)):3A
    连续工作电流覆盖小型开关电源、家电控制板的主流负载范围。
  4. 反向漏电流(Ir):100μA@80V
    额定反向电压下漏电流极小,进一步提升转换效率,降低待机损耗。
  5. 非重复峰值浪涌电流(Ifsm):70A
    可承受10ms内70A浪涌,抵御开机、负载突变等突发电流冲击,提升电路可靠性。
  6. 工作结温范围:-55℃~+150℃
    宽温覆盖工业、车载环境,极端低温(-55℃)或高温(150℃)下稳定工作。

三、机械与封装特性

SS38F采用SMAF表面贴装封装,具备以下优势:

  1. 小型化尺寸:常规4.0×2.5×1.5mm,体积仅为插件封装1/3,适合高密度PCB(如手机充电器、路由器电源)。
  2. 高可靠材料:引脚为高导热铜材,焊接性好;外壳为环氧树脂,耐温耐腐蚀,符合RoHS无铅要求。
  3. 清晰极性标识:一端带色环(阴极),焊接时快速识别,避免反接损坏。

四、典型应用场景

结合参数特性,主要应用于:

  1. 开关电源次级整流:手机快充、LED驱动(12V/24V),低VF提升转换效率至90%以上。
  2. 车载电子系统:车载充电器、车灯驱动、音响电源,宽温适配车载温度波动,浪涌抵御启动冲击。
  3. 小型家电控制板:电磁炉、微波炉、电风扇电源,3A电流覆盖负载,浪涌避免开关损坏。
  4. 通信设备电源:路由器、交换机、光猫电源模块,SMAF封装适配高密度布局。

五、可靠性与环境适应性

依托长电成熟制程,可靠性突出:

  • 宽温稳定:150℃结温下无需大幅降额,仍可连续工作;
  • 浪涌耐受:通过IEC/EN 61000-4-5浪涌测试,抗冲击能力强;
  • 长寿命:封装耐老化,老化后漏电流变化率<10%,满足5年以上生命周期。

六、选型与替代参考

  • 兼容型号:同参数换封装可选SS38(DO-214AC);更高电流选SS58F(5A/80V);
  • 降额建议:高温(>100℃)下,平均电流降额至2.5A,反向电压降额至64V,保证长期可靠。

综上,SS38F以“低损耗、高可靠、小型化”为核心,是中低压电源设计中平衡性能与成本的优选肖特基整流管。

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