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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

STMicroelectronics STPS30L120CR

Name: STPS30L120CR
Brand: STMicroelectronics
SKU: STPS30L120CR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPS30L120CR

Manufacturer:: STMicroelectronics

Category:: Diode Arrays

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: STPS30L120CR.pdf

Description:: DIODE ARRAY SCHOT 120V 15A I2PAK

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Product details

Overview

STPS30L120CR from STMicroelectronics is a dual center-tap Schottky rectifier in I²PAK package, rated for 120 V repetitive peak reverse voltage, 2 × 15 A average forward current per diode, and 150 °C maximum junction temperature. It delivers low forward voltage drop (0.65 V typ. at 15 A, 125 °C), high-frequency switching capability, and avalanche-rated operation-optimized for DC/DC converters and notebook adapters.

For engineers reviewing the STPS30L120CR datasheet, STPS30L120CR pinout, STPS30L120CR application, or STPS30L120CR equivalent, this device supports high-efficiency power conversion where thermal robustness, low conduction loss, and insulated-package safety are critical in compact industrial and consumer SMPS designs.

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification or dual-output topologies. Its low VF and fast recovery eliminate minority-carrier storage delay, supporting >100 kHz switching without snubbers.

Thermal design leverages I²PAK's 0.7 °C/W total junction-to-case thermal resistance (dual-diode mode) and 1.3 °C/W per diode, with Rth(j-a) derating curves validated up to 150 °C ambient. Avalanche energy rating of 828 W (10 µs pulse, Tj = 125 °C) enables transient overvoltage resilience without external clamping.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	120 V - Withstands 120 V repetitive reverse voltage without breakdown; suitable for 48 V–60 V bus-derived SMPS outputs.
IF(AV) per diode	15 A - Sustains 15 A average forward current per diode at Tc = 110 °C; enables 30 A total device output in parallel-path configurations.
VF (typ.)	0.65 V @ 15 A, 125 °C - Minimizes conduction loss (≈9.75 W per diode), reducing heatsink requirements in space-constrained adapters.
Tj(max)	150 °C - Allows operation in thermally aggressive environments (e.g., sealed LED drivers) without derating below full current rating.
Rth(j-c) total	0.7 °C/W - Enables direct mounting to PCB copper pour or small heatsinks; achieves <105 °C junction rise at 30 A total dissipation.
IFSM	220 A @ 10 ms - Survives inrush currents in AC-DC front-ends and hot-plug events without parametric shift or failure.
ECOPACK®2	Compliant - Meets RoHS, halogen-free, and lead-free soldering requirements per JEDEC J-STD-020; qualified for industrial lifecycle.

Pinout & Package

STPS30L120CR uses the I²PAK (TO-263) surface-mount package: 3-terminal, isolated plastic body with exposed drain pad (cathode) for thermal and electrical connection. Dimensions: 10.0–10.4 mm width, 13.0–14.0 mm length, 4.4–4.6 mm height; weight: 1.50 g.

Pin/Terminal	Circuit Role	Design Meaning
A1	Anode 1	Input terminal for first Schottky diode path; connects to primary-side switch node in flyback or half-bridge secondary.
A2	Anode 2	Input terminal for second Schottky diode path; enables dual-output or interleaved rectification with shared cathode.
K	Common Cathode	Output node for both diodes; electrically and thermally tied to exposed metal pad-must be soldered to large copper area for thermal management.

Key Features

Feature	Design Value
Low VF at high temperature	0.65 V typ. @ 15 A, 125 °C - Reduces conduction loss by ≥25% vs. standard Schottkys at elevated ambient, improving efficiency in enclosed adapters.
Avalanche-rated power	828 W (10 µs, Tj = 125 °C) - Absorbs voltage spikes from transformer leakage inductance without external TVS, simplifying layout and BOM.
High junction temperature	150 °C max operating Tj - Eliminates need for forced air cooling in 20–30 W LED drivers and portable chargers.
I²PAK thermal performance	0.7 °C/W total Rth(j-c) - Delivers 30 A output capability with ≤10 °C junction rise above PCB temperature when mounted on 400 mm² 2-oz copper.
ECOPACK®2 compliance	Halogen-free, Pb-free, RoHS-compliant - Meets IPC-1752A material declaration requirements for global OEM shipments.

Applications

Server Power Supply

Notebook Adapter

Use Scenario: Secondary-side synchronous rectification in 48 V input, 12 V/20 A output LLC resonant converter.

IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier replacing MOSFETs in center-tapped winding configuration; conducts during positive half-cycle of transformer secondary.

Use Value: Eliminates gate drive complexity and body diode conduction loss while maintaining <1.0 V output drop across full load range.

Use Scenario: Dual-output (19 V + 5 V) AC-DC adapter for ultrabooks with USB-C PD negotiation.

IC Role / Device Role / Timing Role: Center-tap rectifier providing independent 19 V and 5 V rails from split secondary winding; K terminal serves as common return.

Use Value: Enables single-transformer dual-rail design with <0.7 V dropout at 3 A per rail, reducing component count vs. discrete diode solutions.

Industrial LED Driver

Telecom DC/DC Module

Use Scenario: Constant-current LED string driver with 36 V output and 1.5 A load, operating in sealed outdoor enclosure.

IC Role / Device Role / Timing Role: Output rectifier in flyback topology; handles continuous 1.5 A with 120 V isolation margin against line surges.

Use Value: 150 °C Tj rating allows full-load operation at 85 °C ambient without derating; avalanche rating suppresses surge-induced failures.

Use Scenario: 48 V to 3.3 V intermediate bus converter in telecom shelf power system with strict EMI limits.

IC Role / Device Role / Timing Role: High-frequency rectifier in active-clamp forward converter; switches at 300 kHz with minimal reverse recovery noise.

Use Value: Near-zero reverse recovery charge (Qrr ≈ 0) eliminates switching node ringing, easing EMI filter design and passing CISPR-32 Class B.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-30CPH12-M3	Same 120 V VRRM, 30 A total IF(AV), but TO-220AC package; Rth(j-c) = 1.0 °C/W (higher thermal resistance).	Requires larger heatsink for equivalent power dissipation; not surface-mount compatible.	Select when through-hole assembly is mandated and board space permits added thermal mass.
ON Semiconductor MBR30H120CT	120 V VRRM, 30 A IF(AV), TO-220AB package; VF = 0.82 V @ 15 A, 25 °C (12% higher than STPS30L120CR at 125 °C).	Higher conduction loss increases thermal stress in sealed enclosures above 60 °C ambient.	Select when cost sensitivity outweighs thermal performance, and ambient stays below 55 °C.

Compared with VS-30CPH12-M3 and MBR30H120CT, STPS30L120CR offers superior thermal efficiency in SMT layouts and lower high-temperature VF-critical for compact, convection-cooled power supplies where junction temperature margin directly impacts reliability.

Availability

STPS30L120CR is available at Aetrix Electronics and suitable for notebook adapters, industrial LED drivers, and telecom DC/DC modules requiring stable component supply, RoHS-compliant sourcing, and long-term production continuity.

Supply support for STPS30L120CR 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STPS30L120CR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability switch-mode power supplies where low VF, avalanche ruggedness, and thermal scalability are mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS30L120CR supports continuous operation with case temperature (Tc) up to 110 °C when delivering 15 A per diode, based on its 150 °C maximum junction temperature and 1.3 °C/W per-diode thermal resistance. Exceeding 110 °C case temperature risks exceeding Tj(max) unless thermal interface resistance is reduced below 0.5 °C/W.

Can STPS30L120CR replace a single-diode TO-220 Schottky in existing designs?

No-it is a dual-center-tap device with three terminals (A1, A2, K); substituting it for a single-diode part requires circuit redesign to utilize both anodes. Direct replacement is only valid in center-tap transformer topologies where the common cathode matches the original layout's output node.

Is the I²PAK package electrically insulated?

No-the I²PAK package used in STPS30L120CR has a conductive exposed pad tied to the common cathode (K). Unlike the TO-220FPAB variant (1500 VRMS insulation), this version requires PCB isolation clearance and creepage distance compliance for high-voltage secondary-side applications.

How does avalanche rating impact real-world reliability?

The 828 W avalanche power rating (10 µs pulse, Tj = 125 °C) ensures the device safely clamps transient overvoltages-such as those from transformer leakage inductance-without degradation. This eliminates need for external snubbers in well-damped flyback converters and extends MTBF in unregulated industrial power supplies.

STPS30L120CR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Active

Diode Configuration:: 1 Pair Common Cathode

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 120 V

Current - Average Rectified (Io) (per Diode):: 15A

Voltage - Forward (Vf) (Max) @ If:: 880 mV @ 15 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 200 µA @ 120 V

Operating Temperature - Junction:: 150°C (Max)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: I2PAK

STPS30L120CR FAQ

1.How can I place an order for STPS30L120CR through Aetrix?

Please submit a Request for Quotation (RFQ) for STPS30L120CR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STPS30L120CR reliable?

The price and inventory of STPS30L120CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30L120CR is usually 5 days.

3.What payment methods are accepted for STPS30L120CR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30L120CR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPS30L120CR?

STPS30L120CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPS30L120CR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STPS30L120CR?

For technical support, including STPS30L120CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30L120CR requirements.

6.How does Aetrix verify that STPS30L120CR is sourced from the original manufacturer or authorized distributors?

All STPS30L120CR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STPS30L120CR meets industry standards.

7.What is the process for return or replacement of STPS30L120CR?

All STPS30L120CR units undergo pre-shipment inspection (PSI). If there is an issue with STPS30L120CR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STPS30L120CR part is unused and in its original packaging.

Return procedure for STPS30L120CR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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