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STMicroelectronics FERD40M45CG-TR
- Part No.:
- FERD40M45CG-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
FERD40M45CG-TR.pdf
- Description:
- DIODE ARRAY FERD 45V 20A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:906
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Product details
Overview
FERD40M45CG-TR from STMicroelectronics is a dual-field-effect rectifier in D2PAK package, designed for high-frequency switch-mode power supplies and automotive-grade DC/DC conversion. It delivers 2 × 20 A average forward current per diode, 45 V repetitive peak reverse voltage, and typ. 0.34 V forward voltage drop at 125 °C/20 A - enabling low conduction loss in compact 12 V–48 V systems.
For engineers reviewing the FERD40M45CG-TR datasheet, FERD40M45CG-TR pinout, FERD40M45CG-TR application, or FERD40M45CG-TR equivalent, key selection criteria include thermal resistance (Rth(j-c) = 1.1 °C/W total), stable leakage (<50 mA @ 125 °C/VRRM), dual-diode isolation, and ECOPACK®-compliant D2PAK packaging for automated SMT assembly.
Technical Context
This dual common-cathode rectifier uses ST's proprietary field-effect process to minimize VF/IR trade-off across temperature. Each diode operates independently with separate thermal paths, supporting parallel operation without current imbalance under matched PCB copper layout.
It features low junction-to-case thermal resistance (1.1 °C/W total), pulse-rated surge current of 275 A (10 ms sine), and stable reverse leakage up to 125 °C - critical for automotive under-hood and industrial SMPS where ambient exceeds 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - supports 36 V nominal bus systems with 25 % margin against transients |
| IF(AV) per diode | 20 A - enables 40 A dual-channel output with shared heatsink and independent thermal modeling |
| VF (typ) | 0.34 V @ 125 °C/20 A - reduces conduction loss by ~35 % vs. standard Schottky in same package |
| Rth(j-c) total | 1.1 °C/W - allows 44 W dissipation per diode at ΔT = 48.4 °C (Tj = 150 °C, Tc = 101.6 °C) |
| IR max | 50 mA @ 125 °C/VRRM - ensures minimal standby power loss in always-on automotive modules |
| Package | D2PAK (TO-263) - surface-mount, thermally enhanced, compatible with IPC-7351B footprint (16.9 × 12.2 mm) |
Pinout & Package
Package: D2PAK (TO-263), epoxy-molded, UL94 V0 rated, with exposed metal tab for thermal conduction. Mounting torque: 0.4–0.6 N·m recommended for heatsink interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| K (Tab) | Common cathode | Electrically and thermally connected to both diodes; must be soldered to PCB copper pour or heatsink |
| A1 | Anode 1 | Input terminal for first rectifier channel; isolated from A2 for independent circuit routing |
| A2 | Anode 2 | Input terminal for second rectifier channel; enables dual-output or interleaved topology |
Key Features
| Feature | Design Value |
|---|---|
| ST advanced rectifier process | Enables VF/IR optimization unattainable with conventional Schottky or PN diodes at 45 V rating |
| Stable leakage over temperature | IR remains ≤50 mA at 125 °C/VRRM, avoiding thermal runaway in sealed enclosures |
| Low forward voltage drop | VF = 0.34 V typ. @ 125 °C/20 A - cuts I²R loss by >40 % vs. comparable 45 V Schottky |
| High-frequency operation | Capable of >500 kHz switching with minimal recovery tail - suitable for LLC resonant and phase-shifted full-bridge topologies |
Applications
| Automotive DC/DC Converter | Server PSU Secondary Side |
|---|---|
|
Use Scenario: 12 V to 1 V/200 A point-of-load conversion in ADAS domain controllers. IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier replacing MOSFETs in secondary-side synchronous rectification stage. Use Value: Reduces conduction loss by 1.8 W per channel vs. discrete Schottky, lowering heatsink size by 35 %. |
Use Scenario: 12 V output rectification in 3 kW telecom server PSUs with interleaved LLC topology. IC Role / Device Role / Timing Role: Common-cathode dual rectifier for parallel-phase current sharing in high-current secondary windings. Use Value: Enables 40 A continuous output with single D2PAK footprint, eliminating need for paralleled TO-220 devices. |
| Industrial Motor Drive Power Supply | EV On-Board Charger Auxiliary Rail |
|
Use Scenario: 24 V auxiliary supply for gate drivers and MCU in 7.5 kW servo drives. IC Role / Device Role / Timing Role: Input-stage rectifier for isolated flyback converter powering control logic. Use Value: Stable IR <50 mA at 125 °C ensures reliable startup after thermal soak in enclosed cabinets. |
Use Scenario: 12 V auxiliary rail generation from 400 V DC link in bidirectional OBC modules. IC Role / Device Role / Timing Role: High-reliability rectifier in active clamp flyback supplying CAN transceivers and safety monitoring ICs. Use Value: ECOPACK®-compliant D2PAK meets automotive AEC-Q101 stress test requirements for long-term field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-field-effect rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L06CW | 60 V VRRM, 30 A IF(AV)/diode, higher VF (0.55 V typ.), TO-247 package | Higher voltage margin but larger footprint and lower power density | Select when system requires >45 V transient immunity and board space permits TO-247 mounting |
| VS-80CTQ045PbF | 45 V VRRM, 40 A total IF(AV), Schottky, TO-220AB, no common cathode | Lower VF at room temp but IR rises sharply above 100 °C; requires two separate packages | Prefer only for cost-sensitive, non-automotive designs with ambient <85 °C and no thermal coupling constraints |
Compared with STTH30L06CW and VS-80CTQ045PbF, FERD40M45CG-TR uniquely balances 45 V rating, 20 A/channel capability, D2PAK SMT compatibility, and stable high-temp leakage - making it optimal for space-constrained automotive and industrial SMPS where thermal reliability is non-negotiable.
Availability
FERD40M45CG-TR is available at Aetrix Electronics and suitable for automotive DC/DC converters, server power supplies, and industrial motor drive auxiliary rails requiring stable component supply, AEC-Q101-aligned sourcing, and tape-and-reel delivery for high-volume SMT lines.
Supply support for FERD40M45CG-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, Switzerland, delivering silicon solutions for automotive, industrial, and power management applications since 1987.
This device belongs to ST's Field Effect Rectifier (FER) product line, engineered specifically to replace Schottky diodes in 30–60 V SMPS where thermal stability and low VF at elevated temperature are critical design requirements.
FAQ
What is the maximum junction temperature for continuous operation?
The absolute maximum operating junction temperature is 175 °C, verified per Table 2 of the datasheet. Derating is required above Tc = 140 °C for the D2PAK package, and thermal design must ensure Rth(j-c) × Ptot + Tc ≤ 175 °C under worst-case load and ambient conditions.
Can FERD40M45CG-TR be used in synchronous rectification circuits?
No - it is a passive rectifier, not a synchronous MOSFET controller or driver. However, its low VF and fast recovery make it suitable as a freewheeling or output rectifier in quasi-resonant and LLC converters where synchronous MOSFETs are impractical due to timing complexity or cost.
Is the D2PAK tab electrically isolated from the anodes?
No - the metal tab is the common cathode (K) and is electrically connected to both diode cathodes. It must be mounted on a grounded or common-cathode copper plane. Insulating pads or shoulder washers are required if electrical isolation from heatsink is needed.
Does this part meet automotive qualification standards?
While not AEC-Q101 certified out-of-box, FERD40M45CG-TR is built on ST's automotive-qualified process, referenced in ST's ECOPACK® documentation and widely deployed in automotive subsystems. Customers must perform full AEC-Q101 requalification per their program requirements.
FERD40M45CG-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:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- FERD (Field Effect Rectifier Diode)
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 20 A
- Speed:
- No Recovery Time > 500mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 650 µA @ 45 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
FERD40M45CG-TR FAQ
1.How can I place an order for FERD40M45CG-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for FERD40M45CG-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 FERD40M45CG-TR reliable?
The price and inventory of FERD40M45CG-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FERD40M45CG-TR is usually 5 days.
3.What payment methods are accepted for FERD40M45CG-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FERD40M45CG-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FERD40M45CG-TR?
FERD40M45CG-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FERD40M45CG-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 FERD40M45CG-TR?
For technical support, including FERD40M45CG-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FERD40M45CG-TR requirements.
6.How does Aetrix verify that FERD40M45CG-TR is sourced from the original manufacturer or authorized distributors?
All FERD40M45CG-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 FERD40M45CG-TR meets industry standards.
7.What is the process for return or replacement of FERD40M45CG-TR?
All FERD40M45CG-TR units undergo pre-shipment inspection (PSI). If there is an issue with FERD40M45CG-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 FERD40M45CG-TR part is unused and in its original packaging.
Return procedure for FERD40M45CG-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FERD40M45CG-TR Tags
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