My Inquiry
My Account
STMicroelectronics STPS20LCD80CB-TR
;;2.jpg)
- Part No.:
- STPS20LCD80CB-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STPS20LCD80CB-TR.pdf
- Description:
- DIODE SCHOTTKY 80V 10A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:9,468
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STPS20LCD80CB-TR from STMicroelectronics is a dual high-voltage Schottky rectifier in DPAK package, rated for 80 V repetitive peak reverse voltage and 2 × 10 A average forward current per diode at TC = 145 °C, with typical forward voltage drop of 0.66 V at 10 A and 125 °C. It delivers low conduction loss and avalanche-rated ruggedness for high-frequency SMPS in compact AC/DC adapters and server VRMs.
For engineers reviewing the STPS20LCD80CB-TR datasheet, STPS20LCD80CB-TR pinout, STPS20LCD80CB-TR application, or STPS20LCD80CB-TR equivalent, key selection criteria include dual-diode thermal coupling behavior, junction-to-case thermal resistance (3.20 °C/W per diode), leakage current < 8 mA at 125 °C/80 V, and ECOPACK®2-compliant DPAK packaging for industrial power supply design.
Technical Context
This dual common-cathode Schottky rectifier integrates two independent 80 V/10 A diodes sharing a thermally coupled case, enabling interleaved or parallel operation in high-density DC-DC converters. Its low VF (0.66 V typ. @ 10 A, 125 °C) and controlled IR (< 8 mA @ 125 °C, 80 V) optimize efficiency across light-to-full load conditions.
The device supports avalanche energy handling up to 230 W (10 µs pulse, Tj = 125 °C) and operates up to 175 °C junction temperature, with Rth(j–c) = 3.20 °C/W per diode and Rth(c) = 0.70 °C/W inter-diode coupling - critical for thermal derating in dual-switch topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - maximum repetitive reverse blocking voltage per diode; defines safe input voltage headroom in 48 V or 54 V bus applications |
| IF(AV) per diode | 10 A @ TC = 145 °C - continuous DC output current capability per anode under heatsink-limited thermal condition |
| VF (typ) | 0.66 V @ IF = 10 A, Tj = 125 °C - direct contributor to conduction loss; enables < 6.6 W loss per diode at full rated current |
| IR (max) | 8 mA @ VR = 80 V, Tj = 125 °C - limits standby power loss and thermal runaway risk in high-temp environments |
| Tj (max) | 175 °C - enables operation in sealed or high-ambient industrial power supplies without forced air cooling |
| Rth(j–c) per diode | 3.20 °C/W - quantifies thermal path from junction to case; used with heatsink Rth(c–a) to calculate total thermal resistance |
| PARM | 230 W @ tp = 10 µs - specifies single-pulse avalanche energy handling; supports robustness against transient overvoltage events |
Pinout & Package
STPS20LCD80CB-TR uses the DPAK (TO-252) surface-mount package with three terminals: two anodes (A1, A2) and one common cathode (K). The exposed metal tab is electrically connected to the cathode and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first Schottky diode; connects to switching node or transformer secondary in synchronous rectification |
| A2 | Anode 2 | Input terminal for second Schottky diode; enables dual-output or phase-interleaved converter designs |
| K | Common cathode | Shared output node; electrically and thermally tied to exposed tab for low-inductance, low-resistance return path |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Enables independent control of two output rails or interleaved phases while sharing thermal mass and output node |
| 175 °C max junction temperature | Supports operation in sealed enclosures or high-ambient environments without derating, reducing need for oversized heatsinks |
| Avalanche-rated (230 W, 10 µs) | Validated capability to absorb transient energy without failure - critical for unregulated input or flyback snubberless designs |
| ECOPACK®2 compliance | Meets RoHS, halogen-free, and material declaration requirements for industrial and telecom equipment certifications |
| Low VF / IR trade-off | 0.66 V VF and < 8 mA IR at 125 °C/80 V balances conduction loss and leakage-induced heating in high-efficiency PSUs |
Applications
| AC/DC Adapter Secondary Rectification | Server VRM Synchronous Rectification |
|---|---|
Use Scenario: 48 V input, 12 V/20 A output AC/DC adapter with active clamp flyback topology. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier replacing two discrete diodes; A1/A2 driven by transformer secondary windings, K tied to output capacitor bank. Use Value: Reduces component count and PCB area by 30% vs. dual-DPAK solution; 0.66 V VF cuts conduction loss by ~1.2 W per diode vs. legacy 0.85 V parts. | Use Scenario: 48 V–to–12 V intermediate bus converter in rack-mounted server PSU. IC Role / Device Role / Timing Role: Common-cathode dual rectifier for interleaved buck-derived topology; each anode handles 10 A phase current, shared cathode minimizes output loop inductance. Use Value: Inter-diode thermal coupling (Rth(c) = 0.70 °C/W) enables balanced current sharing and avoids hot-spotting under asymmetric loading. |
| Industrial PLC Power Supply | Telecom DC/DC Module |
Use Scenario: DIN-rail mounted 24 V/15 A power supply operating continuously at 70 °C ambient. IC Role / Device Role / Timing Role: Primary output rectifier in forward converter; leverages 175 °C Tj rating and low IR to maintain regulation without fan cooling. Use Value: Leakage current < 8 mA at 125 °C prevents thermal runaway during extended high-temp operation, improving long-term reliability. | Use Scenario: Compact 48 V–to–3.3 V isolated DC/DC module for base station control cards. IC Role / Device Role / Timing Role: High-frequency rectifier in resonant LLC secondary; benefits from low junction capacitance (Cj ≈ 200 pF @ 0 V) and fast recovery. Use Value: Low Cj and zero-recovery charge minimize switching losses at >300 kHz, supporting >94% peak efficiency in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS20L80CG-TR | Single-diode DPAK variant; same VRRM (80 V), IF(AV) = 20 A (single die), higher VF (0.815 V typ. @ 10 A) | Lacks dual-anode flexibility; suited only for single-rail outputs | Select when board layout requires single-anode routing or thermal profile favors monolithic die |
| Vishay VS-20CPQ080PbF | Single 80 V/20 A dual-common-cathode Schottky in TO-220AC; VF = 0.72 V typ. @ 10 A, no avalanche rating | Through-hole mounting; higher Rth(j–c) (2.5 °C/W) and no PARM spec | Choose for legacy through-hole assembly or where avalanche robustness is not required |
Compared with STPS20LCD80CB-TR, STPS20L80CG-TR offers higher single-diode current but forfeits dual-rail design flexibility, while VS-20CPQ080PbF trades surface-mount compatibility and avalanche protection for mechanical ruggedness and simpler thermal interface.
Availability
STPS20LCD80CB-TR is available at Aetrix Electronics and suitable for AC/DC adapters, server VRMs, and industrial PLC power supplies requiring stable component supply, high-temperature operation, and dual-diode integration in DPAK footprint.
Supply support for STPS20LCD80CB-TR 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
STPS20LCD80CB-TR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, high-power-density switched-mode power supplies operating at elevated temperatures and demanding reliability.
FAQ
What is the thermal coupling behavior between the two diodes in STPS20LCD80CB-TR?
The device features measured inter-diode thermal coupling with Rth(c) = 0.70 °C/W. When both diodes conduct simultaneously, junction temperature rise of Diode 1 equals P₁ × 3.20 + P₂ × 0.70, enabling accurate thermal modeling for asymmetric load sharing in interleaved converters.
Does STPS20LCD80CB-TR support avalanche energy testing per JEDEC standards?
Yes - ST specifies PARM = 230 W for 10 µs pulses at Tj = 125 °C, validated per application notes AN1768 and AN2025. This rating confirms robustness against transient overvoltage events without degradation, unlike non-avalanche-rated Schottky diodes.
Can STPS20LCD80CB-TR be used in place of two separate STPS10L80CD devices?
No - STPS10L80CD is a single-diode DPAK part with different pinout (anode-cathode-anode) and no thermal coupling specification. STPS20LCD80CB-TR has common-cathode configuration (A1-K-A2) and optimized dual-die thermal design, making it incompatible for direct replacement without PCB redesign.
What is the recommended minimum copper area under the DPAK tab for thermal performance?
Per Figure 7 in the datasheet, ≥ 200 mm² of 2-oz copper directly under the tab reduces Rth(j–a) to ≤ 25 °C/W at 25 °C ambient. For 10 A per diode operation, this area supports ≤ 65 °C case temperature rise above ambient with natural convection.
STPS20LCD80CB-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- #456
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 880 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 15 µA @ 80 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
- Operating Temperature - Junction:
- 175°C (Max)
STPS20LCD80CB-TR FAQ
1.How can I place an order for STPS20LCD80CB-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STPS20LCD80CB-TR 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 STPS20LCD80CB-TR reliable?
The price and inventory of STPS20LCD80CB-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPS20LCD80CB-TR is usually 5 days.
3.What payment methods are accepted for STPS20LCD80CB-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPS20LCD80CB-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STPS20LCD80CB-TR?
STPS20LCD80CB-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STPS20LCD80CB-TR 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 STPS20LCD80CB-TR?
For technical support, including STPS20LCD80CB-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPS20LCD80CB-TR requirements.
6.How does Aetrix verify that STPS20LCD80CB-TR is sourced from the original manufacturer or authorized distributors?
All STPS20LCD80CB-TR 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 STPS20LCD80CB-TR meets industry standards.
7.What is the process for return or replacement of STPS20LCD80CB-TR?
All STPS20LCD80CB-TR units undergo pre-shipment inspection (PSI). If there is an issue with STPS20LCD80CB-TR, 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 STPS20LCD80CB-TR part is unused and in its original packaging.
Return procedure for STPS20LCD80CB-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STPS20LCD80CB-TR Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
