Semiconductor Components Industries, LLC, 2002
December, 2002 - Rev. 1 1Publication Order Number:
MR2520L/D
MR2520L
Overvoltage
Transient Suppressor
Designed for applications requiring a low voltage rectifier with
reverse avalanche characteristics for use as reverse power transient
suppressors. Developed to suppress transients in the automotive
system, these devices operate in the forward mode as standard
rectifiers or reverse mode as power avalanche rectifier and will protect
electronic equipment from overvoltage conditions.
•High Power Capability
•Economical
•Increased Capacity by Parallel Operation
Mechanical Characteristics
•Case: Epoxy, Molded
•Weight: 2.5 Grams (Approximately)
•Finish: All External Surfaces Corrosion Resistant and Terminal
Leads are Readily Solderable
•Maximum Lead Temperature for Soldering Purposes:
350°C 3/8″ from Case for 10 Seconds at 5 lbs. Tension
•Polarity: Indicated by Diode Symbol or Cathode Band
•Marking: MR2520L
MAXIMUM RATINGS (TJ = 25°C unless otherwise noted)
Rating Symbol Value Unit
DC Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
VRRM
VRWM
VR
23 Volts
Repetitive Peak Reverse Surge Current
(Time Constant = 10 ms,
Duty Cycle ≤ 1%, TC = 25°C)
IRSM 58 Amps
Peak Reverse Power
(Time Constant = 10 ms,
Duty Cycle ≤ 1%, TC = 25°C)
PRSM 2500 Watts
Average Rectified Forward Current
(Single Phase, Resistive Load, 60 Hz,
TC = 125°C) (See Figure 4)
IO6.0 Amps
Non-Repetitive Peak Surge Current
Surge Supplied at Rated Load
Conditions Halfwave, Single Phase
IFSM 400 Amps
Operating and Storage Junction
Temperature Range TJ, Tstg -65 to
+175 °C
Device Package Shipping
ORDERING INFORMATION
AXIAL LEAD BUTTON
CASE 194
STYLE 1
MR2520L Axial Lead
Button 1000/Box
MR2520LRL Axial Lead
Button 800/Reel
OVERVOLTAGE
TRANSIENT SUPPRESSOR
24 - 32 VOLTS
MR2520L LYYWW
MR2520L= Device Code
L = Location Code
YY = Year
WW = Work Week
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MR2520L
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THERMAL CHARACTERISTICS
Characteristic Lead
Length Symbol Max Unit
Thermal Resistance, Junction to Lead, Both Leads to Heat Sink
with Equal Length 6.25 mm
10 mm
15 mm
RθJL 7.5
10
15
°C/W
Thermal Resistance Junction to Case - RθJC 1.0 °C/W
**Typical
ELECTRICAL CHARACTERISTICS (TJ = 25°C unless otherwise noted)
Characteristic Symbol Min Max Unit
Instantaneous Forward Voltage (Note 1) (IF = 100 Amps, TC = 25°C) VF- 1.25 Volts
Instantaneous Forward Voltage (Note 1) (IF = 6.0 Amps, TC = 25°C) VF- 0.90 Volts
Reverse Current (VR = 20 Vdc, TC = 25°C) IR- 10 nAdc
Reverse Current (VR = 20 Vdc, TC = 25°C) IR- 300 nAdc
Breakdown Voltage (Note 1) (IR = 100 mAdc, TC = 25°C) V(BR) 24 32 Volts
Breakdown Voltage (Note 1) (IR = 90 Amp, TC = 150°C, PW = 80 µs) V(BR) - 40 Volts
Dynamic Resistance (IR = 100 mA, TJ = 25°C, f = 1.0 kHz) RZ- 5.0
Dynamic Resistance (IR = 40 mA, TJ = 25°C) RZ- 0.15
Breakdown Voltage Temperature Coefficient V(BR)TC - 0.09* %/°C
Forward Voltage Temperature Coefficient @ IF = 10 mA VFTC - -2* mV/°C
1. Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%.
**Typical
MR2520L
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100°C
Figure 1. Forward Voltage Figure 2. Normalized Reverse Current
VF, INSTANTANEOUS FORWARD VOLTAGE (mV) TJ, JUNCTION TEMPERATURE (°C)
I
1100900800700500
1.0
10
100
1000
I
175125100755025
Figure 3. Typical Capacitance Figure 4. Maximum Current Ratings
VR, REVERSE VOLTAGE (V) TL, LEAD TEMPERATURE (°C)
C, CAPACITANCE (pF)
2520151050
1000
1500
2000
2500
3000
3500
4000
I
18014012010080604020
0
5
10
15
20
25
Figure 5. Thermal Response Figure 6. Steady State Thermal Resistance
t, TIME (S) LEAD LENGTH (mm)
r(t), TRANSIENT THERMAL
R
2520151050
0
5
10
15
20
25
30
F, INSTANTANEOUS FORWARD CURRENT (A)
, REVERSE CURRENT (NORMALIZED)
R
, A VERAGE FORW ARD CURRENT (A)
F(avg)
160
RESISTANCE (NORMALIZED)
35
40
, THERMAL RESISTANCE
JUNCTION TO LEAD ( C/W)°
JL
TJ = 150°C
25°C
VR = 20 V
L = 6.25 mm
10 mm
15 mm
Both leads to heatsink with equal length
IF(peak)/IF(avg) =
L = 6.25 mm, both leads to heatsink (equal length)
Maximum
Maximum
Typical
Typical
Both leads to heatsink (equal length)
Single to heatsink
1000600 100
101
102
103
104
150
10-3 10-2 10-1 100101102
10-2
10-1
100
MR2520L
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Figure 7. Maximum Peak Reverse Current Figure 8. Maximum Peak Reverse Power
t, TIME CONSTANT (mS) t, TIME CONSTANT (mS)
I
1000100101
10
100
P
1000100101
100
1000
10000
Figure 9. Maximum Reverse Energy Figure 10. Reverse Power Derating
t, TIME CONSTANT (mS) TL, LEAD TEMPERATURE (°C)
W
1000100101
1
10
100
1000
150100755025
200
400
800
1200
1600
2400
Figure 11. Typical Clamping Factor
IRSM, REPETITIVE PEAK REVERSE SURGE CURRENT (A)
V
12070603010
1.00
1.10
1.20
RSM, PEAK REVERSE CURRENT (A)
, PEAK REVERSE POWER (W)
RSM
PEAK REVERSE POWER (W)
125
50
, PEAK REVERSE ENERGY (J)
RSM
2000
20 40 90 110
80 100
1.02
1.04
1.06
1.08
1.18
1.12
1.14
1.16
TJ = 25°CTJ = 25°C
TJ = 25°C
Time Constant = 100 mS
Time Constant = 10 mS
/V
Z(Irsm) Z(100 mA)
PW = 80 S, TL = 25°C
600
1000
1400
1800
2600
2200
2800
Figure 12. Maximum Load Dump Frequency
TIME CONSTANT (ms)
f, FREQUENCY (HERTZ)
10001 10 100
1−5 mm (Both leads to heat sink)
10-3
10-2
10-1
100
1−20 mm (Both leads to heat sink)
MR2520L
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Figure 13. Load Dump Test Circuit
Figure 14. Load Dump Pulse Current
t, TIME (S)
0.50.30.20.10
0
20
40
60
80
100
(%)
0.4
dl/dt < 1 A/s
2 Ohms
dl/dt Limitation
100 H
MR2532L
50 mF0 - 150 V
t (50%) t (10%)
t (37%)
t (37%) = Time Constant
t (50%) = 0.7 t (37%)
t (10%) = 2.3 t (37%)
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Notes
MR2520L
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PACKAGE DIMENSIONS
AXIAL LEAD BUTTON
CASE 194-04
ISSUE F
NOTES:
1. CATHODE SYMBOL ON PACKAGE.
STYLE 1:
PIN 1. CATHODE
2. ANODE
A
K
B
K
2
1
D
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A8.43 8.69 0.332 0.342
B5.94 6.25 0.234 0.246
D1.27 1.35 0.050 0.053
E25.15 25.65 0.990 1.010
MR2520L
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Email: r14525@onsemi.com
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MR2520L/D
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