Fairchild MMBD4148, MMBD4148SE, MMBD4148CC, MMBD4148CA service manual

MMBD4148/SE/CC/CA

Connection Diagram

4148	4148SE
3	3

3		3
	2	5H		1		1	2
1	1		2	4148CC 3			3 4148CA
		MARKING
SOT-23	MMBD4148	5H	MMBD4148CA	D6
	MMBD4148CC D5		MMBD4148SE	D4
				1	2	1	2

Small Signal Diode

Absolute Maximum Ratings * TA = 25°C unless otherwise noted

Symbol	Parameter	Value	Units
VRRM	Maximum Repetitive Reverse Voltage	100	V
IF(AV)	Average Rectified Forward Current	200	mA
IFSM	Non-repetitive Peak Forward Surge Current	1.0	A
	Pulse Width = 1.0 second
	Pulse Width = 1.0 microsecond	2.0	A
TSTG	Storage Temperature Range	-55 to +150	°C
TJ	Operating Junction Temperature	150	°C

* These ratings are limiting values above which the serviceability of the diode may be impaired.

Thermal Characteristics

Symbol	Parameter	Value	Units
PD	Power Dissipation	350	mW
RθJA	Thermal Resistance, Junction to Ambient	357	°C/W

Electrical Characteristics TA=25°C unless otherwise noted

Symbol	Parameter	Test Conditions	Min.	Max.	Units
VR	Breakdown Voltage	IR = 5.0µA	75		V
		IR = 100µA	100		V
VF	Forward Voltage	IF = 10mA		1.0	V
IR	Reverse Leakage Current	VR = 20V		25	nA
		VR = 20V, TA = 150°C		50	µA
		VR =75V		5.0	µA
CT	Total Capacitance	VR = 0V, f = 1.0MHz		4.0	pF
trr	Reverse Recovery Time	IF = 10mA, VR = 6.0V,		4.0	ns
		IRR = 1.0mA, RL = 100Ω

MMBD4148/SE/CC/CA

©2004 Fairchild Semiconductor Corporation

MMBD4148/SE/CC/CA, Rev. A1

Typical Characteristics

	150
		Ta= 25 °C
[V]	140
R
V
Voltage,	130
Reverse	120
	110
	1	2	3	5	10	20	30	50	100
				Reverse Current, IR [uA]

Figure 1. Reverse Voltage vs Reverse Current BV - 1.0 to 100uA

		Ta= 25 °C
	450
[mV]
F
V	400
Voltage,	350
Forward	300
	250
	1	2	3	5	10	20	30	50	100
				Forward Current, IF [uA]

Figure 3. Forward Voltage vs Forward Current VF - 1.0 to 100 uA

		Ta= 25° C
	1.4
V [V] F	1.2
Voltage,
	1.0
Forward	0.8
	0.6
	10	20	30	50	100	200	300	500
				Forward Current, IF [mA]

Figure 5. Forward Voltage vs Forward Current VF - 10 - 800 mA

ICurrent,	300	Ta= 25	°C				MMBD4148/SE/CC/CA
[nA]	250
R
	200
Reverse	150
	100
	50
	0	10	20	30	50	70	100
			Reverse Voltage, VR [V]

Figure 2. Reverse Current vs Reverse Voltage IR - 10 to 100 V

Ta= 25°C

	700
[mV]	650
V	F
Voltage,	600
Forward	550
	500
	450

0.1

0.2

0.3

0.5

1

2

3

5

10

Forward Current, IF [mA]

Figure 4. Forward Voltage vs Forward Current VF - 0.1 to 10 mA

	1.3
		Ta= 25°C
[pF]
Capacitance	1.2
Total	1.1
	1.0
	0	2	4	6	8	10	12	14

Reverse Voltage [V]

Figure 6. Total Capacitance vs Reverse Voltage

©2004 Fairchild Semiconductor Corporation

MMBD4148/SE/CC/CA, Rev. A1