My Inquiry
My Account
STMicroelectronics STPS20170CFP
- Part No.:
- STPS20170CFP
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack
- Datasheet:
-
STPS20170CFP.pdf
- Description:
- DIODE ARR SCHOT 170V 10A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:9,574
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STPS20170CFP from STMicroelectronics is a dual-center-tap high-voltage Schottky rectifier diode in insulated TO-220FPAB package, rated for 170 V repetitive peak reverse voltage, 20 A total average forward current (10 A per diode), and 175 °C maximum junction temperature. It delivers low typical forward voltage of 0.69 V at 10 A and 125 °C, enabling high-efficiency operation in high-frequency switched-mode power supplies.
For engineers reviewing the STPS20170CFP datasheet, STPS20170CFP pinout, STPS20170CFP application, or STPS20170CFP equivalent, key selection criteria include its insulated 2000 VRMS package rating, avalanche-rated capability (480 W peak), thermal resistance (3.5 °C/W total junction-to-case), dual-diode configuration, and ECOPACK®2 compliance - all critical for industrial AC/DC adapters and telecom rectifiers requiring safety isolation and thermal robustness.
Technical Context
This dual Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification or dual-output DC/DC conversion. Its silicon Schottky architecture eliminates minority-carrier storage delay, supporting switching frequencies beyond 500 kHz without reverse recovery losses.
The TO-220FPAB package provides reinforced electrical insulation (2000 VRMS) between the metal tab and internal die, allowing direct heatsink mounting without insulating washers. Thermal coupling between diodes is quantified by Rth(c) = 2.5 °C/W, enabling accurate junction temperature estimation when both diodes conduct simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 170 V - Withstands up to 170 V reverse bias without breakdown; suitable for 120/230 VAC input rectification with margin. |
| IF(AV) total | 20 A - Maximum continuous DC output current across both diodes at TC = 115 °C; enables 200–300 W SMPS designs. |
| VF (typ.) | 0.69 V @ 10 A, 125 °C - Low conduction loss reduces power dissipation and improves efficiency vs. bipolar diodes. |
| Tj (max.) | 175 °C - Enables reliable operation in high-ambient environments (e.g., enclosed telecom power units). |
| Rth(j-c) total | 3.5 °C/W - Junction-to-case thermal resistance for both diodes conducting; determines minimum heatsink requirement. |
| Insulation voltage | 2000 VRMS - Reinforced isolation allows safe mounting on grounded heatsinks in Class I equipment. |
| PARM (peak) | 480 W @ 10 µs - Avalanche energy handling supports transient surge suppression without external clamping. |
Pinout & Package
STPS20170CFP uses the TO-220FPAB package: insulated plastic case with metal tab (cathode-connected), three leads (A1, K, A2), and 2000 VRMS isolation between tab and terminals. Mounting torque: 0.55 N·m (recommended), max 0.7 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first diode path; connects to primary-side switch node in center-tapped forward converter. |
| K | Common cathode | Shared output node for both diodes; ties to +VOUT rail; electrically connected to insulated metal tab. |
| A2 | Anode 2 | Input terminal for second diode path; used for dual-output or interleaved rectification topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-center-tap Schottky structure | Enables single-package implementation of center-tapped transformer secondary rectification, reducing PCB area and component count. |
| 2000 VRMS insulation | Eliminates need for insulating pads or shoulder washers when mounting to grounded heatsinks - simplifies mechanical design and improves thermal reliability. |
| Avalanche-rated (480 W) | Withstands repetitive inductive switching surges without degradation - critical for flyback and forward converters with leakage inductance. |
| ECOPACK®2 compliance | Meets RoHS, halogen-free, and lead-free soldering requirements per JEDEC J-STD-020; supports green manufacturing and reflow compatibility. |
| 175 °C Tj max | Supports operation in thermally constrained enclosures (e.g., sealed base stations) without derating below full 20 A current capability. |
Applications
| Server AC/DC Power Supply | Industrial PLC Power Module |
|---|---|
Use Scenario: Primary-side rectification in 80 PLUS Titanium-certified 500 W server PSU using active clamp forward topology. IC Role / Device Role / Timing Role: Dual-center-tap Schottky rectifier providing low-loss, high-frequency secondary-side conduction with shared cathode return. Use Value: 0.69 V VF at 125 °C reduces conduction loss by ~35% vs. ultrafast bipolar diodes, improving full-load efficiency by 0.8–1.2%. | Use Scenario: Dual 24 V DC outputs (logic + I/O) derived from split secondary winding in DIN-rail mounted PLC power module. IC Role / Device Role / Timing Role: Center-tapped rectifier delivering isolated, regulated 24 V rails with inherent cross-regulation via shared cathode path. Use Value: Integrated dual-diode structure eliminates timing skew between outputs and ensures matched forward characteristics (<±2% VF mismatch). |
| Telecom Rectifier Brick | EV Charging Auxiliary Power Supply |
Use Scenario: 48 V output rectification in -48 V telecom rectifier brick operating at 200 kHz with forced-air cooling. IC Role / Device Role / Timing Role: High-current Schottky rectifier handling 15 A continuous per leg under 65 °C ambient with 2000 VRMS isolation. Use Value: 3.5 °C/W total Rth(j-c) enables <110 °C junction temp at full load - avoids thermal shutdown and extends lifetime beyond 100,000 hours. | Use Scenario: Auxiliary 12 V supply in 7 kW on-board charger, deriving power from HV DC link via flyback converter. IC Role / Device Role / Timing Role: Avalanche-rated rectifier absorbing leakage energy during MOSFET turn-off in high-dV/dt environment. Use Value: 480 W peak avalanche power rating prevents failure during repeated 600 V transients - eliminates need for external TVS clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS20170CT | TO-220AB package (non-insulated); Rth(j-c) = 1.3 °C/W total; no 2000 VRMS isolation. | Requires insulating hardware for grounded heatsinks; better thermal performance but higher assembly cost and risk of creepage violation. | Select when thermal budget is tighter than isolation requirement and mechanical design accommodates insulation kits. |
| Vishay VS-20CPH07-M3 | Single-anode dual-cathode configuration; 70 V VRRM; 20 A IF(AV); D²PAK package; no avalanche rating. | Not pin-compatible; lower voltage rating limits use to ≤24 V systems; lacks surge robustness for HV flyback. | Only viable for low-voltage, non-isolated dual-output applications where avalanche immunity is not required. |
Compared with STPS20170CT and VS-20CPH07-M3, STPS20170CFP uniquely combines 170 V rating, 2000 VRMS insulation, and 480 W avalanche capability in a single TO-220FPAB package - making it the only option for safety-critical, high-reliability 48–54 V telecom and industrial SMPS where isolation and surge resilience are non-negotiable.
Availability
STPS20170CFP is available at Aetrix Electronics and suitable for server AC/DC power supplies, industrial PLC power modules, and telecom rectifier bricks requiring stable component supply, long-lifecycle support, and certified isolation performance.
Supply support for STPS20170CFP 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 automotive, industrial, and consumer markets.
STPS20170CFP belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability switched-mode power conversion in safety-isolated and thermally demanding applications.
FAQ
What is the maximum recommended mounting torque for STPS20170CFP?
The datasheet specifies a recommended torque value of 0.55 N·m and a maximum torque of 0.7 N·m for the TO-220FPAB package. Exceeding 0.7 N·m risks cracking the molded case or damaging internal wire bonds, which may cause premature thermal or electrical failure. Use a calibrated torque screwdriver and verify flatness of the heatsink surface before installation.
Can STPS20170CFP be used in non-center-tapped topologies?
Yes - though optimized for center-tapped configurations, STPS20170CFP can operate as two independent Schottky diodes (A1–K and A2–K). Its dual-anode/single-cathode structure supports synchronous rectification in LLC resonant converters or dual-phase buck-derived supplies, provided layout maintains symmetrical thermal paths and current sharing is verified.
How does the 2000 VRMS insulation rating impact PCB layout?
The 2000 VRMS isolation allows direct mounting of the metal tab to a grounded heatsink without insulating hardware, but PCB creepage and clearance must still comply with IEC 62368-1. Minimum creepage between A1/A2 traces and any grounded copper must be ≥3.2 mm (for Pollution Degree 2, Material Group IIIa), and the tab area must be kept free of exposed copper beneath the package footprint.
Is STPS20170CFP suitable for automotive applications?
No - STPS20170CFP is not qualified to AEC-Q101 and lacks automotive-specific qualification testing (e.g., HTOL, ESD, vibration). Its 175 °C Tj rating exceeds automotive under-hood requirements, but absence of PPAP documentation, automotive-grade traceability, and extended temperature validation precludes use in ASIL-B or higher systems. ST offers AEC-Q101 variants like STPS20L170CG in D²PAK for automotive.
STPS20170CFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 170 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 15 µA @ 170 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FP
STPS20170CFP FAQ
1.How can I place an order for STPS20170CFP through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20170CFP 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 STPS20170CFP reliable?
The price and inventory of STPS20170CFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20170CFP is usually 5 days.
3.What payment methods are accepted for STPS20170CFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20170CFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20170CFP?
STPS20170CFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20170CFP 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 STPS20170CFP?
For technical support, including STPS20170CFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20170CFP requirements.
6.How does Aetrix verify that STPS20170CFP is sourced from the original manufacturer or authorized distributors?
All STPS20170CFP 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 STPS20170CFP meets industry standards.
7.What is the process for return or replacement of STPS20170CFP?
All STPS20170CFP units undergo pre-shipment inspection (PSI). If there is an issue with STPS20170CFP, 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 STPS20170CFP part is unused and in its original packaging.
Return procedure for STPS20170CFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20170CFP 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…
