
LESHAN RADIO COMPANY, LTD.
K3–2/9
NPN MMBT3904WT1 PNP MMBT3906WT1
ELECTRICAL CHARACTERISTICS (T A = 25°C unless otherwise noted) (Continued)
Characteristic Symbol Min Ma x Unit
ON CHARACTERISTICS (2)
DC Current Gain h FE ––
(I C = 0.1 mAdc, V CE = 1.0 Vdc) MMBT3904WT1 40 ––
(I C = 1.0 mAdc, V CE = 1.0 Vdc) 70 ––
(I C = 10 mAdc, V CE = 1.0 Vdc) 100 300
(I C = 50 mAdc, V CE = 1.0 Vdc) 60 ––
(I C = 100 mAdc, V CE = 1.0 Vdc) 30 ––
(I C = –0.1 mAdc, V CE = –1.0 Vdc) MMBT3906WT1 60 ––
(I C = –1.0 mAdc, V CE = –1.0 Vdc) 80 ––
(I C = –10 mAdc, V CE = –1.0 Vdc) 100 300
(I C = –50 mAdc, V CE = –1.0 Vdc) 60 ––
(I C = –100 mAdc, V CE = –1.0 Vdc) 30 ––
Collector–Emitter Saturation V oltage VCE(sat) Vdc
(I C = 10 mAdc, I B = 1.0 mAdc) MMBT3904WT1 –– 0.2
(I C = 50 mAdc, I B = 5.0 mAdc) –– 0.3
(I C = –10 mAdc, I B = –1.0 mAdc) MMBT3906WT1 –– – 0.25
(I C = –50 mAdc, I B = –5.0 mAdc) –– – 0.4
Base–Emitter Saturation V oltage V BE(sat) Vdc
(I C = 10 mAdc, I B = 1.0 mAdc) MMBT3904WT1 0.65 0.85
(I C = 50 mAdc, I B = 5.0 mAdc) –– 0.95
(I C = –10 mAdc, I B = –1.0 mAdc) MMBT3906WT1 – 0.65 – 0.85
(I C = –50 mAdc, I B = –5.0 mAdc) –– – 0.95
SMALL–SIGNAL CHARACTERISTICS
Current–Gain — Bandwidth Product f TMHz
(I C = 10 mAdc, V CE = 20 Vdc, f = 100 MHz) MMBT3904WT1 300 ––
(I C = –10 mAdc, V CE= –20 Vdc, f = 100 MHz) MMBT3906WT1 250 ––
Output Capacitance C obo pF
(V CB = 5.0 Vdc, I E = 0, f = 1.0 MHz) MMBT3904WT1 –– 4.0
(V CB= –5.0 Vdc, I E = 0, f = 1.0 MHz) MMBT3906WT1 –– 4.5
Input Capacitance C ibo pF
(V EB = 0.5 Vdc, I C = 0, f = 1.0 MHz) MMBT3904WT1 –– 8.0
(V EB = –0.5 Vdc, I C = 0, f = 1.0 MHz) MMBT3906WT1 –– 10.0
Input Impedance h ie kΩ
(V CE= 10 Vdc, I C = 1.0 mAdc, f = 1.0 kHz) MMBT3904WT1 1.0 10
(V CE= –10 Vdc, I C = –1.0 mAdc, f = 1.0 kHz) MMBT3906WT1 2.0 12
Voltage Feedback Ratio h re X 10 –4
(V CE= 10 Vdc, I C = 1.0 mAdc, f = 1.0 kHz) MMBT3904WT1 0.5 8.0
(V CE= –10 Vdc, I C = –1.0 mAdc, f = 1.0 kHz) MMBT3906WT1 0.1 10
Small–Signal Current Gain h fe —
(V CE= 10 Vdc, I C = 1.0 mAdc, f = 1.0 kHz) MMBT3904WT1 100 400
(V CE= –10 Vdc, I C = –1.0 mAdc, f = 1.0 kHz) MMBT3906WT1 100 400
Output Admittance h oe µmhos
(V CE= 10 Vdc, I C = 1.0 mAdc, f = 1.0 kHz) MMBT3904WT1 1.0 40
(V CE= –10 Vdc, I C = –1.0 mAdc, f = 1.0 kHz) MMBT3906WT1 3.0 60
Noise Figure NF dB
(V
CE
= 5.0Vdc, I
C
= 100µAdc, R
S
=1.0 kΩ, f =1.0kHz)
MMBT3904WT1 –– 5.0
(V
CE
= –5.0Vdc, I
C
= –100 µAdc, R
S
=1.0 kΩ, f =1.0kHz)
MMBT3906WT1 –– 4.0