HFA35HB60C. Ultrafast, Soft Recovery Diode FRED PD-20378C. 1 V R = 600V V F = 1.9V. Q rr = 270nC. di(rec)m/dt = 345A/µs CASE STYLE

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1 PD-2378C HF35HB6C FRED Features Reduced RFI and EMI Reduced Snubbing Extensive Characterization of Recovery Parameters Hermetic Electrically Isolated Ceramic Eyelets ESD Rating: Class 3B per MIL-STD-75, Method 2 Ultrafast, Soft Recovery Diode V R = 6V V F =.9V Q rr = 27nC di(rec)m/dt = 345/µs Description These Ultrafast, soft recovery diodes are optimized to reduce losses and EMI/RFI in high frequency power conditioning systems. n extensive characterization of the recovery behavior for different values of current, temperature and di/dt simplifies the calculations of losses in the operating conditions. The softness of the recovery eliminates the need for a snubber in most applications. These devices are ideally suited for power converters, motors drives and other applications where switching losses are significant portion of the total losses. bsolute Maximum Ratings Parameter Max. Units V R Cathode to node Voltage (Per Leg) 6 V I F(V) Continuous Forward Current, T C = C 3 I FSM Single Pulse Forward Current, T C = 25 C (Per Leg) 5 P T C = 25 C Maximum Power Dissipation 63 W T J, T STG Operating Junction and Storage Temperature Range -55 to +5 C Note: D.C. = 5% rect. wave /2 sine wave, 6 Hz, P.W. = 8.33 ms CSE STYLE (ISOLTED BSE) TO-254 NODE COMMON NODE CTHODE /6/3

2 HF35HB6C Electrical Characteristics (Per (unless otherwise specified) Parameter Min. Typ. Max. Units Test Conditions V BR Cathode node Breakdown Voltage 6 V I R = 25µ V F Forward Voltage.7 I F = 5, T J = -55 C See Fig..9 V I F = 5, 2.3, See Fig I F = 5, I R Reverse Leakage Current µ V R = V R Rated See Fig. 2. m V R = 48V, C T Junction Capacitance, See Fig pf L S Series Inductance 8.7 nh Measured from anode lead to cathode lead, 6mm (.25 in. ) from package Dynamic Recovery Characteristics (Per (unless otherwise specified) Parameter Min. Typ. Max. Units Test Conditions t rr Reverse Recovery Time ns See Fig. t rr I F = 5 I RRM Peak Recovery Current T J = 25 C See Fig. I RRM Q rr Reverse Recovery Charge 8 27 T nc J = 25 C See Fig. Q rr di f /dt = 2/µs di (rec)m /dt Peak Rate of Fall of Recovery Current T /µs J = 25 C See Fig. di (rec)m /dt2 During t b Thermal - Mechanical Characteristics Parameter Typ. Max. Units R thjc Junction-to-Case, Single Leg Conducting 2. C/W Wt Weight 9.3 g 2

3 Instantaneous Forward Current - I F () HF35HB6C Tj = -55 C Tj = 25 C Tj = 25 C Forward Voltage Drop - V F (V) Fig. - Maximum Forward Voltage Drop Vs. Instantaneous Forward Current (Per Leg) Reverse Current - I R (µ)... T J = 5 C T = 25 C J Junction Capacitance - C T (pf) Reverse Voltage - V R (V) Fig. 2 - Typical Reverse Current Vs. Reverse Voltage (Per Leg) T = 25 C J Reverse Voltage - V R (V) Fig. 3 - Typical Junction Capacitance Vs. Reverse Voltage (Per Leg) Thermal Response (Z thjc ). D = SINGLE PULSE (THERML RESPONSE) Notes:. Duty factor D = t / t Peak T J =P DM x Z thjc + TC..... t, Rectangular Pulse Duration (sec) Fig. 4 - Maximum Thermal Impedance Z thjc Characteristics (Per Leg) 3 PDM t t2

4 HF35HB6C 5 2 I F = 5 I = 7.5 F Q RR - (nc) 9 6 I IRRM - () I F = 5 I F = Fig. 5 - Typical Reverse Recovery Vs. di f /dt (Per Leg) Fig. 6 - Typical Recovery Current Vs. di f /dt (Per Leg) 2 9 I F = 5 I F = 7.5 Q RR - (nc) 6 3 di(rec)m/dt - (/µs) I F = 7.5 I F = 5 Fig. 7 - Typical Stored Charge Vs. di f /dt (Per Leg) Fig. 8 - Typical di (rec)m /dt Vs. di f /dt (Per Leg) 4

5 HF35HB6C 3 REVERSE RECOVERY CIRCUIT I F ta trr t b. Ω 2 I RRM Q rr 4.5 I RRM di(rec)m/dt 5 L = 7µH.75 I RRM dif/dt DJUST G IRFP25 D.U.T. Fig. 9 - Reverse Recovery Parameter Test Circuit Case Outline and Dimensions TO-254 D S di /dt f. di f/dt - Rate of change of current through zero crossing 2. I RRM - Peak reverse recovery current 3. trr - Reverse recovery time measured from zero crossing point of negative going I F to point where a line passing through.75 I RRM and.5 I RRM extrapolated to zero current 4. Q rr - rea under curve defined by t rr and I RRM t rr X I RRM Q rr = 2 5. di (rec)m/dt- Peak rate of change of current during t b portion of t rr Fig. - Reverse Recovery Waveform and Definitions 3.78 [.49] 3.53 [.39] 3.84 [.545] 3.59 [.535] 6.6 [.26] 6.32 [.249].2 [.5].27 [.5].2 [.4] 7.4 [.685] 6.89 [.665] 2.32 [.8] 2.7 [.79] 3.84 [.545] 3.59 [.535] B 2 3 C 4.48 [.57] 2.95 [.5].84 [.33] MX. 3.8 [.5] 2X 3X.4 [.45].89 [.35].36 [.4] B 3.8 [.5] NOT ES:. DIMENSIONING & TOLERNCING PER SME Y4.5M LL DIMENSIONS RE SHOWN IN MILLIMETERS [INCHES]. 3. CONTROLLING DIMENSION: INCH. 4. CONFORMS TO JEDEC OUTLINE TO-254. PIN SSIGNMENTS = NODE 2 = COMMON CTHODE 3 = NODE 2 IR WORLD HEDQURTERS: N. Sepulveda Blvd., California 9245, US Tel: (3) IR LEOMINSTER : 25 Crawford St., Leominster, Massachusetts 453, US Tel: (978) TC Fax: (3) Visit us at for sales contact information. Data and specifications subject to change without notice. /23 5