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STMicroelectronics STPS8L30B — Discrete Semiconductors

STPS8L30B Schottky Rectifier, 8 A, 30 V, DPAK, Obsolete

MPNSTPS8L30B
Obsolete

STMicroelectronics STPS8L30B Schottky rectifier, 8 A average rectified current, 30 V reverse voltage, 490 mV forward drop at 8 A, DPAK (TO-252) surface-mount package, junction temperature 150°C max.

$0.8800Ref. price · indicative, final on quote
STMicroelectronics STPS8L30B datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STPS8L30B specifications
ParameterValue
MountingSurface Mount
Voltage - DC reverse (Vr)30 V
Voltage - forward (Vf) (Max) @ if490 mV @ 8 A
Current - reverse leakage @ vr1 mA @ 30 V
Current - average rectified8A
Operating temperature - junction150°C (Max)
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTube
TechnologySchottky
CaseTO-252-3, DPak (2 Leads + Tab), SC-63

Product details

8 A Schottky in a DPAK — what this part does on the board

Applications include OR-ing diodes in redundant supplies, freewheeling diodes in DC-DC converters, and reverse-polarity protection in automotive and industrial circuits where the junction temperature ceiling is 150°C.

STMicroelectronics lists the STPS8L30B as Obsolete. For existing BOM lines, supply runs through independent distribution and surplus inventory.

Forward drop and leakage — the Schottky trade-off

The 490 mV Vf at 8 A is low for an 8 A Schottky, which keeps junction temperature rise in check during continuous conduction. The trade-off shows up in reverse leakage: 1 mA at the 30 V rated reverse voltage. That leakage doubles with temperature, so standby power budgets in hot environments (85°C+ ambient) need to account for it. For OR-ing diodes where leakage matters less than forward efficiency, this part pulls ahead of a PN-junction rectifier. For ultra-low-leakage requirements, a higher-Vf Schottky or a FET-based ideal diode would be a better fit.

Frequently asked questions

Is STPS8L30B obsolete?

Yes, STMicroelectronics lists the STPS8L30B as Obsolete. Factory orders are discontinued; the part is supplied through independent distribution and surplus inventory.

What is the replacement for STPS8L30B?

STMicroelectronics has not published an official successor for the STPS8L30B. For a pin-compatible replacement, look for a Schottky rectifier in the DPAK (TO-252) footprint rated at ≥8 A average and ≥30 V reverse voltage, with a similar forward drop. The replacement must be qualified in your specific circuit — no drop-in substitute is guaranteed without testing.

What are the specifications of STPS8L30B?

The STPS8L30B is an 8 A, 30 V Schottky rectifier. Key ratings: 8 A average rectified current, 30 V maximum reverse voltage, 490 mV forward voltage at 8 A, 1 mA reverse leakage at 30 V, 150°C maximum junction temperature. Package is DPAK (TO-252) for surface-mount assembly.