My Inquiry
My Account
STMicroelectronics STPS30L120CFP
- Part No.:
- STPS30L120CFP
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
STPS30L120CFP.pdf
- Description:
- DIODE ARR SCHOT 120V 15A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:46
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STPS30L120CFP from STMicroelectronics is a dual center-tap Schottky rectifier in insulated TO-220FPAB package, rated for 120 V repetitive peak reverse voltage, 30 A total average forward current (15 A per diode), and 150 °C maximum junction temperature. It delivers low typical forward voltage drop of 0.65 V at 15 A/125 °C and supports high-frequency switching in DC/DC converters and notebook adapters.
For engineers reviewing the STPS30L120CFP datasheet, STPS30L120CFP pinout, STPS30L120CFP application, or STPS30L120CFP equivalent, key selection criteria include its insulated 1500 VRMS package, avalanche-rated 828 W peak power, thermal resistance of 3.8 °C/W (total), and dual-diode configuration enabling center-tapped transformer designs with reduced conduction loss.
Technical Context
This device integrates two independent Schottky diodes in a single insulated TO-220FPAB housing, sharing a common cathode terminal and separate anodes - enabling center-tap secondary rectification without external interconnects. Its low VF and fast recovery support >100 kHz operation in isolated flyback and forward converters.
Thermal design leverages the 3.8 °C/W total junction-to-case resistance and 1500 VRMS isolation barrier, allowing direct mounting to heatsinks without additional insulation. Avalanche capability (828 W, 10 µs pulse) provides robustness against inductive turn-off transients in high-current SMPS stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120 V - Withstands up to 120 V reverse bias without breakdown, suitable for 48 V–60 V output DC/DC stages with margin. |
| IF(AV) per diode | 15 A - Sustains continuous 15 A forward current per diode at Tc = 110 °C, enabling 30 A total dual-diode output. |
| VF (typ.) | 0.65 V @ 15 A, 125 °C - Low conduction loss reduces heat generation and improves efficiency in high-current adapter designs. |
| Rth(j-c) total | 3.8 °C/W - Enables predictable thermal management when mounted on standard heatsinks with torque-controlled screws (0.55 N·m). |
| Insulation rating | 1500 VRMS - Allows safe use in primary-secondary boundary applications without extra isolation hardware. |
| Tj(max) | 150 °C - Supports operation in thermally constrained environments like enclosed notebook power supplies. |
| PARM | 828 W @ 10 µs - Absorbs short-duration inductive energy spikes during MOSFET switching transitions. |
Pinout & Package
TO-220FPAB is a full-molded, electrically insulated variant of TO-220 with integrated isolation barrier between leads and metal tab. The metal tab is electrically isolated and serves solely as a thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first Schottky diode | Connects to one leg of center-tapped transformer secondary; enables independent current path. |
| Anode 2 (A2) | Input terminal for second Schottky diode | Connects to opposite leg of center-tapped transformer secondary; forms complementary rectification pair. |
| Cathode (K) | Common output node for both diodes | Serves as shared positive output rail; eliminates need for external parallel connection of cathodes. |
| Tab (isolated) | Thermal interface only | Electrically floating metal surface for heatsink attachment; no circuit connection required or permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Insulated TO-220FPAB package | 1500 VRMS isolation enables direct mounting across safety barriers in AC/DC front-ends and isolated DC/DC converters. |
| Dual center-tap configuration | Integrated A1–K and A2–K diodes eliminate discrete wiring, reduce parasitic inductance, and improve layout compactness. |
| Avalanche energy rating | 828 W peak power (10 µs) provides hard-switching robustness in non-synchronous rectifier topologies. |
| Low VF at high temperature | 0.65 V typ. @ 15 A/125 °C ensures stable conduction loss across operating range, easing thermal design. |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements without compromising thermal or electrical performance. |
Applications
| Server Power Supply | Notebook Adapter |
|---|---|
Use Scenario: High-efficiency 19.5 V/6.7 A output stage in 130 W laptop adapters using center-tapped transformer topology. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing synchronous-free, low-loss secondary-side DC conversion. Use Value: 0.65 V VF at 125 °C reduces conduction loss by ~18% vs. comparable 100 V parts, improving full-load efficiency to >92%. |
Use Scenario: 12 V/10 A auxiliary rail in multi-output server PSUs with tight thermal envelope. IC Role / Device Role / Timing Role: Center-tap rectifier handling bidirectional current flow during transient load steps. Use Value: 150 °C Tj(max) and 3.8 °C/W Rth(j-c) allow sustained 30 A output without derating in 70 °C ambient chassis. |
| LED Driver | Industrial DC/DC Module |
Use Scenario: Constant-current LED string driver with 48 V input and 36 V output, requiring low-noise rectification. IC Role / Device Role / Timing Role: High-frequency Schottky rectifier minimizing EMI in 250 kHz flyback converter. Use Value: Fast recovery and low junction capacitance (<1000 pF @ 0 V) suppress ringing and reduce filter component count. |
Use Scenario: 24 V input to ±15 V dual-rail isolated DC/DC module for PLC I/O conditioning. IC Role / Device Role / Timing Role: Dual-anode rectifier supporting center-tapped transformer with split secondary winding. Use Value: Integrated A1/A2/K terminals simplify PCB routing and reduce creepage/clearance risks in industrial safety-compliant layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-center-tap Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH12-M3 | Same 120 V VRRM, 30 A IF(AV), but TO-247AC package; Rth(j-c) = 1.0 °C/W (lower thermal resistance), no insulation. | Requires external insulator for safety-critical isolation boundaries; better suited for non-isolated high-power DC/DC. | Select when higher thermal performance is prioritized over built-in isolation and board space is available. |
| ON Semiconductor MBR30H120CT | 120 V VRRM, 30 A IF(AV), TO-220AB package; Rth(j-c) = 0.7 °C/W (per device), but uninsulated tab (no 1500 VRMS rating). | Cannot be used across reinforced insulation barriers without added isolation hardware; lower cost but higher BOM complexity. | Choose for cost-sensitive, non-isolated applications where thermal margin exceeds requirement and isolation is handled elsewhere. |
Compared with VS-30CPH12-M3 and MBR30H120CT, STPS30L120CFP uniquely combines 1500 VRMS insulation, center-tap integration, and 3.8 °C/W thermal resistance - making it optimal for compact, safety-certified, isolated 30 A rectification where board space and certification overhead must be minimized.
Availability
STPS30L120CFP is available at Aetrix Electronics and suitable for notebook adapters, server power supplies, industrial DC/DC modules, and LED drivers requiring stable component supply and certified isolation performance.
Supply support for STPS30L120CFP 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
ST's power diode product line targets high-efficiency, high-reliability power conversion - with STPS30L120CFP specifically engineered for compact, insulated, dual-diode rectification in safety-critical AC/DC and isolated DC/DC systems.
FAQ
Is STPS30L120CFP suitable for synchronous rectification?
No. STPS30L120CFP is a passive Schottky rectifier with fixed anode-cathode polarity and no gate control. It operates as a diode-only solution and cannot replace MOSFET-based synchronous rectifiers that require active gate drive timing. Its role is limited to autonomous unidirectional conduction in center-tapped topologies.
What is the maximum recommended mounting torque for the TO-220FPAB tab?
The recommended torque value for mounting screws on the STPS30L120CFP TO-220FPAB tab is 0.55 N·m, with a maximum allowable torque of 0.70 N·m. Exceeding this may damage the internal mold compound or compromise the 1500 VRMS insulation integrity.
Can STPS30L120CFP be used in non-center-tap configurations?
Yes - though optimized for center-tap use, its dual-anode structure allows flexible implementation: either anode can be left unused (with proper termination), or both anodes can be paralleled (with matched trace lengths) to double current capacity on a single secondary winding, provided thermal limits are observed.
Does STPS30L120CFP require a heatsink in all applications?
A heatsink is required when dissipating ≥3.5 W per diode under continuous operation. At 15 A/125 °C with VF = 0.65 V, conduction loss reaches ~9.75 W per diode - well above the 3.5 W threshold. Mounting to a heatsink with ≤10 °C/W system thermal resistance is mandatory for reliable long-term operation.
STPS30L120CFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- TO-220FP
STPS30L120CFP FAQ
1.How can I place an order for STPS30L120CFP through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS30L120CFP 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 STPS30L120CFP reliable?
The price and inventory of STPS30L120CFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS30L120CFP is usually 5 days.
3.What payment methods are accepted for STPS30L120CFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS30L120CFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS30L120CFP?
STPS30L120CFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS30L120CFP 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 STPS30L120CFP?
For technical support, including STPS30L120CFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS30L120CFP requirements.
6.How does Aetrix verify that STPS30L120CFP is sourced from the original manufacturer or authorized distributors?
All STPS30L120CFP 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 STPS30L120CFP meets industry standards.
7.What is the process for return or replacement of STPS30L120CFP?
All STPS30L120CFP units undergo pre-shipment inspection (PSI). If there is an issue with STPS30L120CFP, 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 STPS30L120CFP part is unused and in its original packaging.
Return procedure for STPS30L120CFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS30L120CFP Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
