PMLL4148L; PMLL4448
High-speed switching diodes
Rev. 8 — 1 February 2011
Product data sheet
1. Product profile
1.1 General description
Single high-speed switching diodes, fabricated in planar technology, and encapsulated in
small hermetically sealed glass SOD80C Surface-Mounted Device (SMD) packages.
Table 1.
Product overview
Package
SOD80C
Configuration
single
Type number
PMLL4148L
PMLL4448
1.2 Features and benefits
High switching speed: t
rr
≤
4 ns
Reverse voltage: V
R
≤
75 V
Repetitive peak reverse voltage: V
RRM
≤
100 V
Repetitive peak forward current: I
FRM
≤
450 mA
Small hermetically sealed glass SMD package
1.3 Applications
High-speed switching
Reverse polarity protection
1.4 Quick reference data
Table 2.
Symbol
I
F
I
FRM
V
R
V
F
Quick reference data
Parameter
forward current
repetitive peak forward
current
reverse voltage
forward voltage
PMLL4148L
PMLL4448
t
rr
[1]
[2]
Conditions
[1]
Min
-
-
-
Typ
-
-
-
-
-
-
-
Max
200
450
75
1
720
1
4
Unit
mA
mA
V
V
mV
V
ns
I
F
= 50 mA
I
F
= 5 mA
I
F
= 100 mA
[2]
-
620
-
-
reverse recovery time
Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard
footprint.
When switched from I
F
= 10 mA to I
R
= 60 mA; R
L
= 100
Ω;
measured at I
R
= 1 mA.
NXP Semiconductors
PMLL4148L; PMLL4448
High-speed switching diodes
2. Pinning information
Table 3.
Pin
1
2
Pinning
Description
cathode
anode
[1]
Simplified outline
Graphic symbol
k
a
sym006
[1]
The marking band indicates the cathode.
3. Ordering information
Table 4.
Ordering information
Package
Name
PMLL4148L
PMLL4448
-
Description
hermetically sealed glass surface-mounted package;
2 connectors
Version
SOD80C
Type number
4. Marking
Table 5.
Marking codes
Marking code
marking band
marking band
Type number
PMLL4148L
PMLL4448
5. Limiting values
Table 6.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
RRM
V
R
I
F
I
FRM
I
FSM
Parameter
repetitive peak reverse
voltage
reverse voltage
forward current
repetitive peak forward
current
non-repetitive peak forward
current
square wave
t
p
= 1
μs
t
p
= 1 ms
t
p
= 1 s
[2]
[1]
Conditions
Min
-
-
-
-
Max
100
75
200
450
Unit
V
V
mA
mA
-
-
-
4
1
0.5
A
A
A
PMLL4148L_PMLL4448
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 1 February 2011
2 of 11
NXP Semiconductors
PMLL4148L; PMLL4448
High-speed switching diodes
Table 6.
Limiting values
…continued
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
P
tot
T
j
T
amb
T
stg
[1]
[2]
Parameter
total power dissipation
junction temperature
ambient temperature
storage temperature
Conditions
T
amb
= 25
°C
[1]
Min
-
-
−65
−65
Max
500
200
+200
+200
Unit
mW
°C
°C
°C
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
T
j
= 25
°C
prior to surge.
6. Thermal characteristics
Table 7.
Symbol
R
th(j-a)
R
th(j-sp)
[1]
Thermal characteristics
Parameter
thermal resistance from
junction to ambient
thermal resistance from
junction to solder point
Conditions
in free air
[1]
Min
-
-
Typ
-
-
Max
350
300
Unit
K/W
K/W
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
7. Characteristics
Table 8.
Characteristics
T
amb
= 25
°
C unless otherwise specified.
Symbol
V
F
Parameter
forward voltage
PMLL4148L
PMLL4448
I
R
I
R
C
d
t
rr
V
FR
[1]
[2]
Conditions
I
F
= 50 mA
I
F
= 5 mA
I
F
= 100 mA
V
R
= 20 V
V
R
= 20 V; T
j
= 150
°C
Min
-
620
-
-
-
-
-
[1]
[2]
Typ
-
-
-
-
-
-
-
-
-
Max
1
720
1
25
50
3
4
4
2.5
Unit
V
mV
V
nA
μA
μA
pF
ns
V
reverse current
reverse current
PMLL4448
diode capacitance
reverse recovery time
forward recovery voltage
V
R
= 20 V; T
j
= 100
°C
V
R
= 0 V; f = 1 MHz
-
-
When switched from I
F
= 10 mA to I
R
= 60 mA; R
L
= 100
Ω;
measured at I
R
= 1 mA.
When switched from I
F
= 50 mA; t
r
= 20 ns.
PMLL4148L_PMLL4448
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 1 February 2011
3 of 11
NXP Semiconductors
PMLL4148L; PMLL4448
High-speed switching diodes
300
I
F
(mA)
200
mbg451
600
I
F
(mA)
mbg464
400
(1)
(2)
(3)
100
200
0
0
100
T
amb
(°C)
200
0
0
1
V
F
(V)
2
FR4 PCB, standard footprint
(1) T
j
= 175
°C;
typical values
(2) T
j
= 25
°C;
typical values
(3) T
j
= 25
°C;
maximum values
Fig 1.
Forward current as a function of ambient
temperature; derating curve
mbg704
Fig 2.
Forward current as a function of forward
voltage
10
3
mgd006
10
2
I
FSM
(A)
10
I
R
(μA)
10
2
(1)
(2)
(3)
10
1
1
10
−1
10
−1
1
10
10
2
10
3
t
p
(μs)
10
4
10
−2
0
100
T
j
(
°
C)
200
Based on square wave currents.
T
j
= 25
°C;
prior to surge
(1) V
R
= 75 V; maximum values
(2) V
R
= 75 V; typical values
(3) V
R
= 20 V; typical values
Fig 3.
Non-repetitive peak forward current as a
function of pulse duration; maximum values
Fig 4.
Reverse current as a function of junction
temperature
PMLL4148L_PMLL4448
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 1 February 2011
4 of 11
NXP Semiconductors
PMLL4148L; PMLL4448
High-speed switching diodes
1.2
C
d
(pF)
1.0
mgd004
0.8
0.6
0.4
0
10
V
R
(V)
20
f = 1 MHz; T
j
= 25
°C
Fig 5.
Diode capacitance as a function of reverse voltage; typical values
8. Test information
t
r
D.U.T.
R
S
= 50
Ω
V = V
R
+
I
F
×
R
S
I
F
SAMPLING
OSCILLOSCOPE
R
i
= 50
Ω
V
R
mga881
t
p
t
10 %
+
I
F
trr
t
90 %
input signal
output signal
(1)
(1) I
R
= 1 mA
Input signal: reverse pulse rise time t
r
= 0.6 ns; reverse voltage pulse duration t
p
= 100 ns; duty cycle
δ ≤
0.05
Oscilloscope: rise time t
r
= 0.35 ns
Fig 6.
Reverse recovery time test circuit and waveforms
I
1 kΩ
450
Ω
I
90 %
V
R
S
= 50
Ω
D.U.T.
OSCILLOSCOPE
R
i
= 50
Ω
10 %
t
t
r
t
p
input signal
VFR
t
output signal
mga882
Input signal: forward pulse rise time t
r
= 20 ns; forward current pulse duration t
p
≥
100 ns; duty cycle
δ ≤
0.005
Fig 7.
Forward recovery voltage test circuit and waveforms
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
PMLL4148L_PMLL4448
Product data sheet
Rev. 8 — 1 February 2011
5 of 11
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