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Product Overview
DSEK60S06P is a 60A 600V common-cathode dual soft-recovery rectifier in TO-247AD. Its two 30A paths support higher-current center-tapped rectification and recirculation circuits.
The 60A total device rating comprises two 30A diode paths. Evaluate each branch at its own current waveform and operating temperature when calculating conduction loss and the required cooling.
Key Features
● 600V repetitive peak reverse voltage and two 30A diode paths.
● 35ns maximum reverse-recovery time under the specified 0.5A test condition.
● 1.9V maximum forward voltage at 30A and 25°C.
● 300A non-repetitive surge current per diode for a 8.3ms pulse.
Key Specifications
| Parameter | Value and conditions |
| Configuration / package | Dual common cathode / TO-247AD |
| Forward current | 60A per device; 30A per diode |
| Repetitive peak reverse voltage | 600V |
| Forward voltage | 1.22V typ at IF = 30A, Tj = 125°C 1.9V max at IF = 30A, Tj = 25°C |
| Reverse recovery time | 35ns max; Tj = 25°C, IF = 0.5A, IR = 1.0A, Irr = 0.25A |
| Surge current | 300A per diode; non-repetitive, t = 8.3ms |
| Junction to case thermal resistance | 1.0°C/W |
| Junction temperature range | −55°C to +175°C |
Current capability depends on case temperature and cooling. Use the datasheet derating curve when determining operating current.
Electrical Configuration and Pinout
Two separate anodes connect to a shared cathode. With the marking face toward you and the leads pointing down, the lead functions are A1, K and A2 from left to right. The exposed metal tab is also connected to K.
Figure 1. Circuit and connection detail from the DSEK60S06P datasheet, page 1. A = anode; K = cathode.
| Connection | Function |
| Left lead | A1 — first diode anode |
| Center lead | K — common cathode |
| Right lead | A2 — second diode anode |
| Metal tab | K — electrically connected to the common cathode |
Typical Applications
● Higher-output battery chargers.
● Welding power-supply rectifiers.
● Industrial common-cathode recirculation paths.
30A per Branch in a Common Cathode Package
The 30A rating of each junction is the key selection point for this device. At this current level, the common lead, conductors and solder joints form part of the thermal design alongside the junction-to-case and heatsink paths.
Design Notes
Evaluate each diode at its own current waveform and duty cycle. The 60A total device rating does not mean one junction can carry 60A. Check reverse-voltage peaks, including switching transients, against the 600V rating.
The metal tab carries the common cathode potential. If the heatsink must remain at a different potential, use an appropriate insulating mounting interface and include its thermal resistance.
The 35ns recovery limit uses the low-current test condition in the parameter table. Evaluate recovery at the application current and temperature. The 300A surge specification is non-repetitive and must not be used as a repetitive overload rating.
FAQ
The stated test uses 0.5 A forward current, 1 A reverse current and a 0.25 A endpoint at 25°C. Recovery at the application current requires waveform validation.
The sheet states 60 A per package and 30 A per internal diode.
Recalculate VF loss, surge stress, terminal heating, transformer current, and the thermal stack; do not rely on the similar package alone.
Only if the chassis may be connected to the common cathode. Otherwise use a qualified electrical insulator.
