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PD-2.247 rev. A 12/97
85HQ... SERIES
SCHOTTKY RECTIFIER Amp
Major Ratings and Characteristics Characteristics
IF(AV) Rectangular waveform VRRM range IFSM @ tp = 5 µs sine VF TJ @ 85 Apk, TJ=125°C range 35 to 45 9000 0.62 - 65 to 175 V
Description/Features Units
A 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 reverse battery protection. 175°C TJ operation A V °C Low forward voltage drop High frequency operation Guard ring for enhanced ruggedness and long term reliability Hermetic packaging
85HQ...
85
CASE STYLE AND DIMENSIONS
Conforms to JEDEC Outline DO-203AB (DO-5) Dimensions in millimeters and inches
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85HQ... Series
PD-2.247 rev. A 12/97
Voltage Ratings
Part number
VR Max. DC Reverse Voltage (V) 35 40 45 VRWM Max. Working Peak Reverse Voltage (V)
85HQ035
85HQ040
85HQ045
Absolute Maximum Ratings
Parameters
IF(AV) Max. Average Forward Current * See Fig. 5 IFSM EAS IAR Max. Peak One Cycle Non-Repetitive Surge Current * See Fig. 7 Non-Repetitive Avalanche Energy Repetitive Avalanche Current
85HQ
85 9000 1130 114 17
Units
A
Conditions
50% duty cycle @ T C = 112° C, rectangular wave form 5µs Sine or 3µs Rect. pulse Following any rated load condition and with rated VRRM applied
A mJ A
10ms Sine or 6ms Rect. pulse
T J = 25 °C, IAS= 17 Amps, L = 0.79 mH Current decaying linearly to zero in 1 µsec Frequency limited by TJ max. VA = 1.5 x VR typical
Electrical Specifications
Parameters
VFM Max. Forward Voltage Drop * See Fig. 1 (1)
85HQ
0.72 0.89 0.62 0.77
Units
V V V V mA mA pF nH V/ µs @ 85A @ 170A @ 85A @ 170A TJ = 25 °C TJ = 125 °C
Conditions
TJ = 25 °C TJ = 125 °C VR = rated VR
IRM CT LS
Max. Reverse Leakage Current (1) * See Fig. 2 Max. Junction Capacitance Typical Series Inductance
5 45 2600 7.5 10,000
VR = 5VDC, (test signal range 100Khz to 1Mhz) 25 °C Measured from top of terminal to mounting plane
dv/dt Max. Voltage Rate of Change (Rated V R)
(1) Pulse Width < 300µs, Duty Cycle < 2%
Thermal-Mechanical Specifications
Parameters
TJ T stg Max. Junction Temperature Range Max. Storage Temperature Range
85HQ
-65 to 175 -65 to 175 0.83 0.25
Units
°C °C °C/W °C/W DCoperation
Conditions
RthJC Max. Thermal Resistance Junction to Case RthCS Typical Thermal Resistance, Case to Heatsink wt T Approximate Weight Mounting Torque Case Style Min. Max.
* See Fig. 4
Mounting surface , smooth and greased
15 (0.53) g (oz.) 23 (20) 46 (40) Kg-cm Non-lubricated threads (Ibf-in)
DO-203AB(DO-5) JEDEC
2
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85HQ... Series
PD-2.247 rev. A 12/97
10 00
10 00 10 0 1 0 1 . 1 .0 1 .0 1 0 0 T =1 5 C 7° J 1 0C 5° 1 5C 2° 1 0C 0° 7° 5C 5° 0C 2° 5C
10 0 In ta ta e u F r a dC rr n - I (A s n n o s ow r u e t ) F
R v rs C r e t - I ( A e e e ur n m) R
5
1 1 2 2 3 3 4 4 0 5 0 5 0 5 0 5 R v r eV lta e- V (V e es o g R )
1 0
Fig. 2 - Typical Values Of Reverse Current Vs. Reverse Voltage
T =1 5 C 7° J
J n tio C p c n e- C ( F u c n a a ita c p) T 100 00
T =1 5 C J 2° T= 2 ° 5C J 1
T =2 ° 5C J
10 00
.1 0
. 1
.2
.3
. 4
.5
.6
. 7
.8
.9
1
10 0 0
1 0
2 0
3 0
4 0
5 0
F rw r V lt g Do - V (V o ad o a e r p ) F M
R v r eV lt g - V ( ) e es o a e R V
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1 T e m l Im e a c - Z h r a p d ne (° / ) CW th C J D=0 0 .5 D=0 3 .3 D=0 5 .2 .1 D=0 7 .1 D=0 8 .0
P
D M
Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage
t 1 t 2 Nt s oe : 1 D t f co D= t / t . uy a t r 1 2
. 1 0 S g P ls in le u e ( h r aRs t ne T e m l e isa c ) .0 1 0 . 00 001
2 P a T =P x Z . ek +T J D M th C C J
.0 0 01
.0 1 0
. 1 0
.1
1
1 0
10 0
t1, R c n u r P ls D r t n(S c n s e ta g la u e u aio eo d)
Fig. 4 - Maximum Thermal Impedance ZthJC Characteristics
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85HQ... Series
PD-2.247 rev. A 12/97
10 8 A w b C s T m e au - ( C llo a le a e e p r t re ° ) 8H 5 Q R J (D ) =08 ° / . 3 CW th C C 10 6
8 0 D=0 8 .0 7 D=0 7 0 .1 D=0 5 .2 6 D=0 3 0 .3 D=0 0 .5 5 0 4 R SL it 0 M im 3 0 2 0 1 0 D C
10 4 D C 10 2
10 0 0
A e g P w r L s - (W tt ) v ra e o e o s as
2 0
4 0
6 0
8 0
10 10 10 0 2 4
0 0
2 5
5 0
7 5
10 0
15 2
A e g F r a dC rr n - IFA ) ( ) v ra e o w r u e t ( V A
A e g F r a dC rr n - I v ra e o w r u e t (A ) F V (A )
Fig. 5 - Maximum Allowable Case Temperature Vs. Average Forward Current
10000
FSM
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I
(A)
1000 At Any Rated Load Condition And With Rated VRRM Applied Following Surge
100 10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L HIGH-SPEED SWITCH FREE-WHEEL DIODE 40HFL40S02 Vd = 25 Volt
DUT
IRFP460 Rg = 25 ohm
+
CURRENT MONITOR
Fig. 8 - Unclamped Inductive Test Circuit
4
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