85HQ

Description/ Features

The 85HQ Schottky rectifier series has been optimized for low reverse leakage at high temperature. The proprietary barrier technology allows for reliable operation up to 175 °C junction temperature. Typical applications are in switching power supplies, converters, free-wheeling diodes, and re- verse battery protection.

175°C T

J operation Low forward voltage drop High frequency operation

Guard ring for enhanced ruggedness and long term reliability

Hermetic packaging

IF(AV) Rectangular 85 A

waveform

V_RRMrange 35 to 45 V

I_FSM @ tp = 5 µs sine 9000 A

VF @85 Apk, T

J=125°C 0.62 V

TJ range - 65 to 175 °C

Major Ratings and Characteristics Characteristics 85HQ... Units

TO-203AB (DO-5)

SCHOTTKY RECTIFIER Amp

85HQ... SERIES

Conforms to JEDEC Outline DO-203AB (DO-5) Dimensions in millimeters and (inches)

2

Bulletin PD-2.247 rev. B 11/02

www.irf.com

* See Fig. 1 0.89 V @ 170A

0.62 V @ 85A

0.77 V @ 170A

I_RM Max. Reverse Leakage Current (1) 5 mA T_J = 25 °C

* See Fig. 2 45 mA T_J = 125 °C

C_T Max. Junction Capacitance 2600 pF V_R = 5V_DC, (test signal range 100Khz to 1Mhz) 25 °C L_S Typical Series Inductance 7.5 nH Measured from top of terminal to mounting plane dv/dt Max. Voltage Rate of Change 10000 V/ µs

(Rated V_R)

T_J = 25 °C

T_J = 125 °C

V_R = rated V_R

Electrical Specifications

Parameters 85HQ Units Conditions

(1) Pulse Width < 300µs, Duty Cycle < 2%

T_J Max. Junction Temperature Range -65 to 175 °C T_stg Max. Storage Temperature Range -65 to 175 °C

R_thJC Max. Thermal Resistance Junction 0.83 °C/W DC operation * See Fig. 4 to Case

R_thCS Typical Thermal Resistance, Case to 0.25 °C/W Mounting surface , smooth and greased Heatsink

wt Approximate Weight 15 (0.53) g (oz.)

T Mounting Torque Min. 23 (20) Non-lubricated threads

Max. 46 (40)

Case Style DO-203AB(DO-5) JEDEC

Kg-cm (Ibf-in)

Thermal-Mechanical Specifications

Parameters 85HQ Units Conditions

I_F(AV) Max. Average Forward Current 85 A 50% duty cycle @ T_C = 112° C, rectangular wave form

* See Fig. 5

I_FSM Max. Peak One Cycle Non-Repetitive 9000 5µs Sine or 3µs Rect. pulse Surge Current * See Fig. 7 1130 10ms Sine or 6ms Rect. pulse E_AS Non-Repetitive Avalanche Energy 114 mJ T_J = 25 °C, I_AS = 17 Amps, L = 0.79 mH I_AR Repetitive Avalanche Current 17 A Current decaying linearly to zero in 1 µsec

Frequency limited by T_Jmax. V_A= 1.5 x V_R typical

Parameters 85HQ Units Conditions

Absolute Maximum Ratings

A

Following any rated load condition and with rated V_RRMapplied

Part number 85HQ035 85HQ040 85HQ045

V_R Max. DC Reverse Voltage (V)

V_RWMMax. Working Peak Reverse Voltage (V) 35 40 45

Voltage Ratings

Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage

Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage

Fig. 4 - Maximum Thermal Impedance Z_thJC

Characteristics Fig. 1 - Maximum Forward Voltage Drop Characteristics

0.1 1 10 100 1000

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 FM

FInstantaneous Forward Current - I (A)

T = 175°C T = 125°C T = 25°C

J J J

Forward Voltage Drop - V (V)

0.001 0.01 0.1 1 10 100 1000

0 5 10 15 20 25 30 35 40 45 R

R

150°C 125°C 100°C 75°C 50°C Reverse Current - I (mA) 25°C

Reverse Voltage - V (V) T = 175°C_J

100 1000 10000

0 10 20 30 40 50

R

TJunction Capacitance - C (pF)

T = 25°C_J

Reverse Voltage - V (V)

0.001 0.01 0.1 1

0.00001 0.0001 0.001 0.01 0.1 1 10 100

D = 0.33 D = 0.50 D = 0.25 D = 0.17 D = 0.08

1

thJC

t , Rectangular Pulse Duration (Seconds)

Thermal Impedance - Z (°C/W)

Single Pulse

(Thermal Resistance) J DM thJC C

t2 t1 P_DM

1 2

Notes:

1. Duty factor D = t / t 2. Peak T = P x Z + T

4

Bulletin PD-2.247 rev. B 11/02

www.irf.com

Vs. Average Forward Current

Fig. 8 - Unclamped Inductive Test Circuit

Fig. 6 - Forward Power Loss Characteristics

Fig. 7 - Maximum Non-Repetitive Surge Current

FREE-WHEEL DIODE 40HFL40S02 CURRENT

MONITOR

HIGH-SPEED SWITCH IRFP460

L

DUT

Rg = 25 ohm ₊ Vd = 25 Volt

100 120 140 160 180

0 20 40 60 80 100 120 140

DC

Allowable Case Temperature - (°C)

F(AV) Average Forward Current - I (A)

R (DC) = 0.83°C/W_thJC

0 10 20 30 40 50 60 70 80

0 25 50 75 100 125

DC

Average Power Loss - (Watts)

F(AV) D = 0.08

D = 0.17 D = 0.25 D = 0.33 D = 0.50 RMS Limit

Average Forward Current - I (A)

100 1000 10000

10 100 1000 10000

FSM

p

Non-Repetitive Surge Current - I (A)

At Any Rated Load Condition And With Rated V Applied Following Surge ^RRM

Square Wave Pulse Duration - t (microsec)

IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 TAC Fax: (310) 252-7309 Visit us at www.irf.com for sales contact information. 11/02 Data and specifications subject to change without notice.

This product has been designed for Industrial Level.

Qualification Standards can be found on IR's Web site.