➤ 01基本参数

---

小功率高速高压开关三极管 MJE13001 ，典型应用：

• 荧光灯电子镇流器
• 手机充电器等开关特点。

主要的参数：

• 通过万用表验证上面TO-92封装的形式。B对于C,E的二极管的导通电压：0.662V 。

下面是从 小功率荧光灯拆解分析 中拆卸下来的两支 13002晶体管。

^{▲ 在小型荧光灯泡里拆卸下来的13002}

^{▲ 测量三极管的基本参数}

 

➤ 02测量基本耐压参数

---

^{▲ 测量MJE13001的基本击穿电压}

使用 高压产生平台 测量MJE13001的基本耐压参数。

1.Vcbo

^{▲ Vcbo电压击穿电流}

vin=[440.62,447.58,454.47,461.54,468.36,475.95,482.88,489.88,496.73,503.78,510.64,517.51,524.53,532.08,538.99,545.90,552.88,559.70,566.72,573.61,580.44,587.92,594.99,601.91,608.79,615.81,622.68,629.63,636.53,643.99,650.86,657.83,664.64,671.68,678.51,685.34,692.24,699.23,706.73,713.58,720.58,727.48,734.46,741.22,745.76,748.19,750.69,753.13,755.25,757.27,759.34,761.35,763.29,765.31,767.42,769.41,771.27,773.04,774.79,776.62,778.03,779.59,781.11,782.43,783.78]
iout=[0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.01,0.27,6.15,18.00,31.38,42.91,55.53,68.74,81.69,95.04,108.20,121.18,135.64,148.37,160.46,172.07,183.83,195.26,206.65,217.86,230.06,241.57,252.75]

2.Vceo

^{▲ Vceo电压与电流}

vin=[439.87,446.84,453.72,460.80,467.69,475.31,482.13,489.20,496.06,503.05,509.97,516.79,523.81,531.30,538.18,545.08,522.64,522.57,522.62,522.71,522.87,523.15,523.36,523.73,524.05,524.26,524.72,525.07,525.44]
iout=[0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,0.00,-0.00,0.01,0.00,76.46,94.61,113.05,130.94,148.31,165.74,180.65,194.24,207.45,220.37,232.67,245.14,257.21]

3.Vceb=0

^{▲ 将eb短接测量Vce与Ice之间的关系}

对照一下，可以看到基本上Vceb=0与Vcbo基本是一样的。

4.测量SOT-23封装的参数

^{▲ 测量SOT-23封装的耐压参数}

(1) Vcbo

需要说明的是，在开始的电流突升是由于使用洗板水进行清理的过程中，挥发过程，各个电极之间的阻抗在动态变化。

^{▲ Vcbo电压与电流曲线}

(2) Vceo

^{▲ Vceo电压与电流}

(3) Vceb=0

^{▲ Vceb=0电压电流}

#!/usr/local/bin/python
# -*- coding: gbk -*-
#============================================================
# TEST2.PY                     -- by Dr. ZhuoQing 2020-09-19
#
# Note:
#============================================================

from headm import *
from tsmodule.tsvisa        import *
from tsmodule.tsstm32       import *

dp1308open()
dm3068open()

setv = linspace(0.8, 2, 100)

idim = []
vdim = []

for v in setv:
    dp1308p6v(v)
    time.sleep(0.5)

    meter = meterval()
    vout = dm3068vdc()

    printff(v, meter[0]*988, vout*1000)
    idim.append(vout*1000)
    vdim.append(meter[0]*988)

    tspsave("measure", vin=vdim, iout=idim)

    if vout*1000 > 250: break

dp1308p6v(0)

plt.plot(vdim, idim)
plt.xlabel("输入电压(V)")
plt.ylabel("电流(uA)")
plt.grid(True)
plt.tight_layout()
plt.show()

#------------------------------------------------------------
#        END OF FILE : TEST2.PY
#============================================================

5.分析

对比前面对于SOT23封装和TO-92封装的数据，可以看到SOT23封装的耐压会更高一些。

 

➤ 03电流放大倍数

---

测量电路如下图所示。通过调节电位器P1器使得Uce达到2.5V左右。通过测量Ubr, Uce来计算三极管的电流放大倍数。

^{▲ 测试电路}
$$\beta =\frac{I_c}{I_b}=\frac{\frac{+5-U_{ce}}{R_c}}{\frac{U_{br}}{R_b}}=\frac{R_b}{R_c}\times \frac{5-U_{ce}}{U_{br}}$$

• 测量TO-92封装组数据为：

Ubr	Uce	beta
0.618	2.312	19.54
0.381	3.354	23.23
1.005	0.751	19.025

• 测量SOT-23封装13001数据

Ubr	Uce	beta
0.6399	2.4851	17.73

从上面测量的结果来看，13001 的电流放大倍数非常低。作为对比。使用一颗8050 NPN三极管替代13001，来测量对应的电流放大倍数。具体数据如下：

Ubr	Uce	beta
0.703	2.586	154.5

将8050的C,E进行交换，测量得到的数值：

Ubr	Uce	beta
0.6178	2.710	16.68

 

※ 结论

---

通过实际测量MJE13001高压高频开关三极管的基本参数，可以验证它具有以下特点：

• 它的耐压很高，Vcbo达到了700V以上；
• 它的电流放大倍数比较低：基本上在20左右。

 
■ 相关文献链接:

• MJE13001
• 高压测试平台:高压包产生高电压基本测试参数