ON Semiconductor MR2520L Technical data

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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 (T

Rating Symbol Value Unit

DC Peak Repetitive Reverse Voltage

Working Peak Reverse Voltage
DC Blocking Voltage

Repetitive Peak Reverse Surge Current

(Time Constant = 10 ms,
Duty Cycle ≤ 1%, T

Peak Reverse Power

(Time Constant = 10 ms,
Duty Cycle ≤ 1%, T

Average Rectified Forward Current

(Single Phase, Resistive Load, 60 Hz,

= 125°C) (See Figure 4)

T

C

Non-Repetitive Peak Surge Current

Surge Supplied at Rated Load
Conditions Halfwave, Single Phase

Operating and Storage Junction

Temperature Range

= 25°C unless otherwise noted)

J

V

RRM

V

RWM

V

I

RSM

= 25°C)

C

P

RSM

= 25°C)

C

I

I

FSM

TJ, T

23 Volts

R

58 Amps

2500 Watts

O

stg

6.0 Amps

400 Amps

-65 to
+175

°C

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OVERVOLTAGE

TRANSIENT SUPPRESSOR

24 - 32 VOLTS

AXIAL LEAD BUTTON

CASE 194

STYLE 1

MR2520L LYYWW

MR2520L= Device Code
L = Location Code
YY = Year
WW = Work Week

ORDERING INFORMATION

Device Package Shipping

MR2520L Axial Lead

Button

MR2520LRL Axial Lead

Button

1000/Box

800/Reel

 Semiconductor Components Industries, LLC, 2002

December, 2002 - Rev. 1

1 Publication Order Number:

MR2520L/D

MR2520L

THERMAL CHARACTERISTICS

Lead

Characteristic

Thermal Resistance, Junction to Lead, Both Leads to Heat Sink

with Equal Length

Thermal Resistance Junction to Case - R

**Typical

Length

6.25 mm
10 mm
15 mm

Symbol Max Unit

R

θ

JL

7.5

°C/W
10
15

θ

JC

1.0 °C/W

ELECTRICAL CHARACTERISTICS (T

= 25°C unless otherwise noted)

J

Characteristic Symbol Min Max Unit

Instantaneous Forward Voltage (Note 1) (IF = 100 Amps, TC = 25°C) V
Instantaneous Forward Voltage (Note 1) (IF = 6.0 Amps, TC = 25°C) V
Reverse Current (VR = 20 Vdc, TC = 25°C) I
Reverse Current (VR = 20 Vdc, TC = 25°C) I
Breakdown Voltage (Note 1) (IR = 100 mAdc, TC = 25°C) V
Breakdown Voltage (Note 1) (IR = 90 Amp, TC = 150°C, PW = 80 µs) V
Dynamic Resistance (IR = 100 mA, TJ = 25°C, f = 1.0 kHz) R
Dynamic Resistance (IR = 40 mA, TJ = 25°C) R
Breakdown Voltage Temperature Coefficient V
Forward Voltage Temperature Coefficient @ IF = 10 mA V

1. Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2%.
**Typical

F

F
R
R

(BR)
(BR)

Z

Z

(BR)TC

FTC

- 1.25 Volts

- 0.90 Volts

- 10 nAdc

- 300 nAdc

24 32 Volts

- 40 Volts

- 5.0 

- 0.15 

- 0.09* %/°C

- -2* mV/°C

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2

1000

, INSTANTANEOUS FORWARD CURRENT (A)

F

I

100

10

1.0

MR2520L

4

10

3

10

2

10

1

10

T

= 150°C

J

100°C

VF, INSTANTANEOUS FORWARD VOLTAGE (mV) T

Figure 1. Forward Voltage Figure 2. Normalized Reverse Current

25°C

, REVERSE CURRENT (NORMALIZED)

0

10

R

I

1000600

1100900800700500

VR = 20 V

, JUNCTION TEMPERATURE (°C)

J

150

175125100755025

4000

3500

3000

2500

2000

C, CAPACITANCE (pF)

1500

1000

0

10

-1

10

25

20

15

10 mm

Both leads to heatsink with equal length

I

F(peak)/IF(avg)

= 

L = 6.25 mm

10

15 mm

5

, AVERAGE FORWARD CURRENT (A)

0

F(avg)

I

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VR, REVERSE VOLTAGE (V) T

, LEAD TEMPERATURE (°C)

L

Figure 3. Typical Capacitance Figure 4. Maximum Current Ratings

40
35

30
25
20
15

Single to heatsink

Maximum

Maximum

160

Typical

Typical

18014012010080604020

r(t), TRANSIENT THERMAL

RESISTANCE (NORMALIZED)

-2

10

-3

10

10

, THERMAL RESIST ANCE

10

JL

JUNCTION TO LEAD ( C/W)°

5

10

R

0

2

Both leads to heatsink (equal length)

L = 6.25 mm, both leads to heatsink (equal length)

-2

10

-1

10

0

10

1

t, TIME (S) LEAD LENGTH (mm)

Figure 5. Thermal Response Figure 6. Steady State Thermal Resistance

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3

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