STMicroelectronics STPS1L60RL

Overview

STPS1L60RL from STMicroelectronics is a 60 V, 1 A low-drop surface-mount Schottky rectifier in DO-41 axial package, optimized for high-frequency DC/DC converters and auxiliary power supplies. It delivers typ. 0.50 V forward voltage at 1 A and 125 °C, supports 175 °C junction operation, and features avalanche rating for robustness in transient-prone circuits like battery chargers and set-top box standby rails.

For engineers reviewing the STPS1L60RL datasheet, STPS1L60RL pinout, STPS1L60RL application, or STPS1L60RL equivalent, this diode is selected for low conduction loss, thermal stability under δ = 0.5 square-wave duty, and compatibility with FR4 PCB layouts using standard DO-41 footprints - critical for compact, cost-sensitive AC/DC auxiliary supplies and lighting drivers.

Technical Context

This Schottky rectifier operates without minority-carrier storage delay, enabling negligible switching losses in >100 kHz SMPS topologies. Its low VF (0.50–0.54 V at 1 A, 125 °C) directly reduces conduction loss per P = 0.42 × IF(AV) + 0.12 × IF²(RMS), while its 175 °C Tj(max) allows sustained operation in thermally constrained enclosures.

The DO-41 variant (STPS1L60RL) exhibits Rth(j-l) = 45 °C/W and IF(AV) = 1 A at TL = 145 °C, with IR leakage limited to 5 mA at 100 °C and VR = 60 V. Avalanche energy rating (PARM = 85 W, tp = 10 µs) provides single-pulse surge immunity without external clamping.

Key Specifications

Pinout & Package

STPS1L60RL uses the DO-41 axial through-hole package (4.07–5.20 mm length, Ø2.04–2.71 mm body), with cathode indicated by band marking. Leads are tinned copper alloy, compatible with wave and hand soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with SS16 and MBR160, STPS1L60RL delivers lower VF at elevated temperature, verified avalanche energy rating, and tighter thermal resistance specification - making it optimal for space-constrained, thermally aggressive auxiliary supplies requiring long-term reliability without snubbers.

Availability

STPS1L60RL is available at Aetrix Electronics and suitable for lighting driver auxiliary supplies, desktop PSU standby rails, and battery charger input stages requiring stable component supply across extended production lifecycles.

Supply support for STPS1L60RL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

STPS1L60RL belongs to ST's high-efficiency Schottky rectifier product line, engineered specifically for low-loss, high-reliability operation in compact, high-frequency switched-mode power supplies.

FAQ

What is the maximum allowable lead temperature during soldering for STPS1L60RL?

The DO-41 package supports wave soldering with peak lead temperature ≤ 260 °C for 10 seconds, per JEDEC J-STD-020. Hand soldering should use iron tip temperature ≤ 350 °C for < 3 seconds per lead to avoid epoxy degradation or internal bond damage.

Can STPS1L60RL replace a standard silicon rectifier in an existing 60 V design?

Yes - with caveats: STPS1L60RL reduces forward loss by ~40% versus 1N4007 (VF ≈ 0.8–1.1 V), but its reverse leakage (5 mA max @ 100 °C) is higher than silicon. Verify that leakage does not disrupt feedback networks or cause unintended bias in high-impedance circuits.

Is STPS1L60RL suitable for synchronous rectification topologies?

No - STPS1L60RL is a passive Schottky diode, not a MOSFET-based synchronous rectifier. It cannot be actively controlled or gated; it functions only as a unidirectional freewheeling element. Synchronous designs require dedicated SR controllers and N-channel MOSFETs.

How does the DO-41 package affect thermal performance compared to SMA variants?

STPS1L60RL (DO-41) has Rth(j-l) = 45 °C/W, significantly higher than STPS1L60A (SMA, 30 °C/W) or STPS1L60MF (STmite flat, 20 °C/W). This limits power dissipation to ~0.67 W at ΔT = 30 °C, requiring larger PCB copper pads or forced airflow in high-duty-cycle applications.