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STMicroelectronics STTH30AC06CWL — Discrete Semiconductors

STTH30AC06CWL fast recovery diode

MPNSTTH30AC06CWL
Active

STMicroelectronics STTH30AC06CWL, Fast Recovery =< 500ns, > 200mA (Io) dual common-cathode diode, 600 V Vr, 15 A average rectified per leg, 55 ns trr, TO-247-3 through-hole package.

$3.5800Ref. price · indicative, final on quote
STMicroelectronics STTH30AC06CWL datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STTH30AC06CWL specifications
ParameterValue
Diode typeStandard
MountingThrough Hole
Voltage - DC reverse (Vr)600 V
Voltage - forward (Vf) (Max) @ if1.95 V @ 15 A
Current - reverse leakage @ vr10 µA @ 600 V
Current - average rectified (Io) (per diode)15A
Operating temperature - junction-65°C~175°C
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
CaseTO-247-3
Diode configuration1 Pair Common Cathode
Reverse recovery time55 ns

Product details

Its 55 ns reverse recovery time (trr) at 15 A and 600 V makes it a direct fit for hard-switched power-factor-correction boost stages, output rectification in 1–2 kW switch-mode supplies, and interleaved PFC designs where the common-cathode pair shares the load.

600 V blocking and 1.95 V forward drop at 15 A — BOM headroom

Each diode in the pair is rated for 600 V DC reverse voltage and delivers 15 A average rectified current. The maximum forward voltage is 1.95 V at 15 A, which at 25°C is typical for a 600 V-class fast recovery die. Reverse leakage is 10 µA at 600 V, low enough to avoid thermal runaway in a hot boost stage. For a 1.5 kW PFC running from a 400 V DC rail, the 600 V margin leaves room for switching transients without avalanche stress.

Common-cathode pair in TO-247 — layout and thermal

The 1 Pair Common Cathode configuration means the cathodes are internally tied to the center tab of the TO-247-3 package, with the two anodes on pins 1 and 3. This saves a PCB footprint versus two discrete TO-220 diodes for center-tapped secondary rectification or interleaved boost stages. The through-hole TO-247-3 package handles the thermal dissipation through the tab — a heatsink with a flat mounting surface and thermal compound is assumed for continuous 15 A per leg. Mounting torque per the datasheet recommendation avoids die stress.

ST lists the STTH30AC06CWL as an active product.

Frequently asked questions

What is the closest pin-compatible alternative to STTH30AC06CWL?

A direct functional alternative in the same 600 V, 15 A, common-cathode, TO-247 class would be another ST TH-series dual diode or a part like the MUR3020 (30 A, 200 V, common-cathode). However, the STTH30AC06CWL's 55 ns trr at 600 V is faster than many 200 V-class ultrafast parts, so substitution requires checking the voltage rating and recovery time against the circuit's worst-case blocking voltage and switching frequency.

What is the STTH30AC06CWL's listed speed?

The STTH30AC06CWL is classified as a Fast Recovery diode with trr = 55 ns at 15 A and 600 V. This puts it in the ultrafast recovery class, suitable for hard-switched PFC and output rectification up to about 100 kHz switching frequency.

Is STTH30AC06CWL compatible with MUR3020?

The MUR3020 is a 200 V, 30 A common-cathode ultrafast diode in TO-247. The STTH30AC06CWL has a 600 V blocking voltage versus 200 V, so the ST part can replace the MUR3020 in a 200 V circuit with voltage margin, but the reverse is not true — a MUR3020 would fail in a 600 V application. Both share the same package and pinout, so they are mechanically interchangeable in a 200 V design, but the 55 ns trr of the ST part is comparable to the MUR3020's typical recovery time.