Semiconductor Components Industries, LLC, 2000
October, 2000 – Rev. 4 1Publication Order Number:
MR2535L/D
MR2535L
Overvoltage
Transient Suppressors
Medium Current
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.
•Avalanche Voltage 24 to 32 Volts
•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: MR2535L
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
20 Volts
Repetitive Peak Reverse Surge Current
(Time Constant = 10 ms, Duty Cycle
≤ 1%, TC = 25°C) (See Note 1)
IRSM 62 Amps
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 600 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
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MR2535L Axial Lead
Button 1000/Box
MR2535LRL Axial Lead
Button 800/Reel
MARKING DIAGRAM
MR2535L LYYWW
MR2535L= Device Code
L = Location Code
YY = Year
WW = Work Week
MR2535L
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THERMAL CHARACTERISTICS
Characteristic Lead
Length Symbol Max Unit
Thermal Resistance, Junction to Lead @ Both Leads to Heat Sink,
Equal Length 1/4″
3/8″
1/2″
RθJL 7.5
10
13
°C/W
Thermal Resistance Junction to Case RθJC 0.8* °C/W
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– 1.1 Volts
Reverse Current (VR = 20 Vdc, TC = 25°C) IR– 200 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
Breakdown Voltage Temperature Coefficient V(BR)TC – 0.096* %/°C
Forward Voltage Temperature Coefficient @ IF = 10 mA VFTC – 2* mV/°C
1. Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%.
MR2535L
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75°C
Figure 1. Typical Forward Voltage Figure 2. Typical Reverse Current versus
Junction Temperature
VF, INSTANTANEOUS FORWARD VOLTAGE (mV) TJ, JUNCTION TEMPERATURE (°C)
I
1000900800700600
1
10
100
1000
I
150125100755025
0.01
0.1
1
10
100
1000
Figure 3. Typical Capacitance Figure 4. Maximum Current Ratings
VR, DC BLOCKING 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
1001010.010.001
0.01
0.1
1
R
2520151050
0
5
10
15
20
25
30
45
F, INSTANTANEOUS FORWARD CURRENT (A)
, REVERSE CURRENT (nA)
R
, A VERAGE FORW ARD CURRENT (A)
F(avg)
160
0.1
RESISTANCE (NORMALIZED)
35
40
, THERMAL RESISTANCE
JUNCTION TO LEAD ( C/W)°
JL
TJ = 125°C25°C
VR = 20 V
TJ = 25°C
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
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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
0
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
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Figure 12. Load Dump Test Circuit
Figure 13. 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
MR2535L
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
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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
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MR2535L/D
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