My Inquiry
My Account
STMicroelectronics STTH20L03CG-TR
- Part No.:
- STTH20L03CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
STTH20L03CG-TR.pdf
- Description:
- DIODE ARRAY GP 300V 10A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,802
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STTH20L03CG-TR from STMicroelectronics is a dual-center-tap ultrafast soft-recovery epitaxial rectifier diode in D²PAK package, rated for 300 V repetitive peak reverse voltage and 2 × 10 A average forward current per diode, with typical reverse recovery time of 26 ns at 25 °C and forward voltage drop of 0.8 V - engineered for secondary-side rectification in high-frequency SMPS and DC-DC converters operating up to 175 °C junction temperature.
For engineers reviewing the STTH20L03CG-TR datasheet, STTH20L03CG-TR pinout, STTH20L03CG-TR application, or STTH20L03CG-TR equivalent, key selection criteria include soft recovery behavior (Sfactor ≥ 0.3), low conduction loss profile (P = 0.8×IF(AV) + 0.015×IF²(RMS)), thermal resistance (Rth(j-c) = 1.0 °C/W total), and ECOPACK®2 compliance for high-density power designs.
Technical Context
This dual-diode device integrates two independent ultrafast epitaxial PN junctions in a single D²PAK thermally optimized package, sharing a common cathode terminal (K) and separate anodes (A1, A2). Its soft recovery minimizes EMI generation during switching transitions in resonant and phase-shifted topologies.
The device operates across -40 to +175 °C junction temperature range with specified dynamic parameters at both 25 °C and 125 °C, including trr = 55–72 ns and QRR = 250–375 nC under high-dI/dt conditions (–200 A/µs), enabling stable performance in high-efficiency LLC and active-clamp forward converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - supports output rectification in 24–48 V telecom and server PSUs with 2× safety margin over nominal bus voltage |
| IF(AV) per diode | 10 A - enables 20 A total continuous output current capability when used in center-tap configuration |
| trr (typ.) | 26 ns at 25 °C - reduces switching losses and EMI in >100 kHz SMPS designs |
| VF (typ.) | 0.8 V - lowers conduction loss to ~8 W per diode at 10 A, improving overall efficiency |
| Rth(j-c) total | 1.0 °C/W - allows 20 W dissipation with ≤20 °C case-to-junction rise, supporting compact heatsink integration |
| Sfactor | ≥0.3 - ensures smooth current zero-crossing and suppresses voltage overshoot/ringing in hard-switched circuits |
| QRR | 250–375 nC - quantifies stored charge removal burden on synchronous MOSFET gate drivers in hybrid rectification |
Pinout & Package
D²PAK (TO-263AB) thermally enhanced surface-mount package with exposed metal tab for direct PCB thermal coupling; features three terminals: A1 (Anode 1), A2 (Anode 2), and K (common Cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode 1 | Connects to one leg of center-tapped transformer secondary; carries half-cycle forward current |
| A2 | Anode of Diode 2 | Connects to opposite leg of center-tapped transformer secondary; conducts complementary half-cycle |
| K | Common Cathode | Output node for full-wave rectified DC; requires low-inductance copper pour for EMI control |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr ≤ 35 ns (max) with Sfactor ≥ 0.3 - reduces RFI and snubber stress in high-frequency converters |
| Low VF conduction loss | 0.95 V max at 10 A, 25 °C - cuts resistive heating by ~30% vs. standard fast rectifiers |
| High Tj operation | Rated to +175 °C junction - supports sealed or high-ambient environments without derating |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy - meets industrial and telecom environmental mandates |
| Thermal efficiency | Rth(j-c) = 1.0 °C/W total - enables 20 W dissipation with <20 °C ΔT, simplifying thermal design |
Applications
| Telecom AC-DC Front-End | Server VRM Secondary Rectification |
|---|---|
Use Scenario: 48 V input rectification in distributed power architecture with center-tapped transformer and 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: Dual-anode ultrafast rectifier providing full-wave output with minimal reverse recovery noise. Use Value: Soft recovery (Sfactor ≥ 0.3) reduces EMI filter size by 40% and eliminates need for RC snubbers. | Use Scenario: 12 V → 1.2 V step-down using multiphase buck with center-tapped secondary winding. IC Role / Device Role / Timing Role: High-current secondary-side rectifier handling 10 A per phase with tight thermal constraints. Use Value: 1.0 °C/W Rth(j-c) enables direct copper pad mounting, reducing board area by 25% vs. TO-220 solutions. |
| Industrial PLC Power Supply | EV On-Board Charger Auxiliary PSU |
Use Scenario: 24 V isolated auxiliary supply in programmable logic controller with wide ambient range (–40 to +70 °C). IC Role / Device Role / Timing Role: Center-tap rectifier delivering regulated 5 V/3.3 V rails with high reliability under thermal cycling. Use Value: 175 °C max Tj rating avoids derating at elevated ambient, extending MTBF by >2× vs. 150 °C-rated parts. | Use Scenario: Isolated 12 V auxiliary supply in bidirectional OBC, operating continuously at 65 °C ambient. IC Role / Device Role / Timing Role: Dual-diode rectifier in flyback-derived auxiliary converter with strict EMI limits. Use Value: 26 ns trr (typ.) and low QRR (250 nC) minimize conducted emissions, passing CISPR-25 Class 5 without added filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast dual-center-tap rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH20L03CT | Same die in TO-220AB package; Rth(j-c) = 1.5 °C/W per diode (total 1.0 °C/W unchanged) | Requires through-hole mounting and larger heatsink footprint; less suitable for automated SMT lines | Select for prototyping or low-volume builds where manual assembly and thermal testing are feasible |
| IXYS MBR2030CT | Schottky construction; VF = 0.55 V typ., but VRRM = 30 V only - not a voltage-compatible replacement | Only usable in ≤30 V output stages; unsuitable for 48 V telecom or 24 V industrial systems | Consider only for low-voltage (<30 V), high-efficiency applications where trr and softness are secondary concerns |
Compared with STTH20L03CT, the STTH20L03CG-TR offers superior manufacturability and thermal interface consistency in volume SMT production; versus MBR2030CT, it provides 10× higher VRRM and verified soft recovery - essential for EMI-sensitive 300 V-class power supplies.
Availability
STTH20L03CG-TR is available at Aetrix Electronics and suitable for telecom AC-DC front-ends, server VRM secondary rectification, and industrial PLC power supplies requiring stable component supply and long-term lifecycle support.
Supply support for STTH20L03CG-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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The STTH series targets high-frequency power conversion, with STTH20L03CG-TR specifically developed for space-constrained, high-efficiency secondary-side rectification in SMPS and DC-DC converters demanding soft recovery and extended temperature operation.
FAQ
What is the maximum allowable case temperature for continuous operation?
The device is rated for junction temperature up to +175 °C. With Rth(j-c) = 1.0 °C/W total and typical PCB copper area, sustained case temperatures up to +155 °C are permissible when dissipating ≤20 W. Derating is required above this point per Figure 3 in the datasheet, which shows thermal impedance variation with pulse duration.
Can STTH20L03CG-TR be used in synchronous rectification topologies?
No - it is a passive silicon epitaxial diode, not a MOSFET-based synchronous rectifier. However, its low QRR (250–375 nC) and soft recovery make it compatible as a freewheeling or clamp diode alongside synchronous FETs in active-clamp or LLC converters where precise timing control is needed.
Is the D²PAK package lead-free and RoHS compliant?
Yes - STTH20L03CG-TR is ECOPACK®2 certified, meaning it is fully RoHS compliant and halogen-free, with lead-free terminations and environmentally optimized epoxy molding compound meeting JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements.
How does the dual-center-tap configuration affect PCB layout?
The A1–K and A2–K paths must be symmetrical in trace length and width to balance conduction losses and minimize circulating currents. The common cathode (K) requires a large, low-inductance copper pour connected directly to the output capacitor ground plane to suppress high-frequency ringing caused by fast di/dt transitions.
STTH20L03CG-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 26 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 300 V
- Operating Temperature - Junction:
- -40°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
STTH20L03CG-TR FAQ
1.How can I place an order for STTH20L03CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH20L03CG-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 STTH20L03CG-TR reliable?
The price and inventory of STTH20L03CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH20L03CG-TR is usually 5 days.
3.What payment methods are accepted for STTH20L03CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH20L03CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH20L03CG-TR?
STTH20L03CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH20L03CG-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 STTH20L03CG-TR?
For technical support, including STTH20L03CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH20L03CG-TR requirements.
6.How does Aetrix verify that STTH20L03CG-TR is sourced from the original manufacturer or authorized distributors?
All STTH20L03CG-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 STTH20L03CG-TR meets industry standards.
7.What is the process for return or replacement of STTH20L03CG-TR?
All STTH20L03CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH20L03CG-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 STTH20L03CG-TR part is unused and in its original packaging.
Return procedure for STTH20L03CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTH20L03CG-TR 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
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
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…
