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Diodes Incorporated FRS2MD
- Part No.:
- FRS2MD
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
FRS2MD.pdf
- Description:
- RAPIDGPPRECTIFIERDO-221AC(F3D)T&
- Quantity:
- Payment:
- Shipping:
Inventory:3,576
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Product details
Overview
FRS2MD from Diodes Incorporated is a surface-mount fast recovery rectifier diode rated for 1000 V repetitive peak reverse voltage and 2.0 A average forward current at Tc = 95°C, with 500 ns reverse recovery time and 1.3 V max forward voltage at 2.0 A/25°C, used in snubber and freewheeling circuits of offline AC-DC power supplies.
For engineers reviewing the FRS2MD datasheet, FRS2MD pinout, FRS2MD application, or FRS2MD equivalent, key selection criteria include its AEC-Q101 qualification, DO-221AC package thermal performance (RthJC = 25°C/W), low IR (5 µA @ 1000 V/25°C), and suitability for high-efficiency flyback and boost converter clamp stages.
Technical Context
This device operates as a unidirectional power switching diode optimized for rapid turn-off in high-frequency switching topologies. Its 500 ns reverse recovery time and 16 pF junction capacitance enable stable operation up to ~100 kHz in hard-switched converters without excessive switching loss or voltage overshoot.
The DO-221AC (F3-D) package provides low thermal resistance (RthJC = 25°C/W) and robust mechanical reliability under automotive-grade thermal cycling (-55°C to +150°C), supported by glass passivation and halogen-free molding compound compliant with UL 94V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak line transients in universal-input 85–265 VAC SMPS without breakdown |
| I(AV) | 2.0 A @ Tc = 95°C - Supports continuous conduction mode output rectification in 30–50 W adapters |
| Trr | 500 ns - Limits reverse recovery charge (Qrr ≈ 25 nC) to reduce switching losses in 65–100 kHz designs |
| VF | ≤1.3 V @ 2.0 A/25°C - Minimizes conduction loss and heatsink requirements in compact layouts |
| IR | ≤5 µA @ 1000 V/25°C - Ensures low standby leakage in high-impedance bias networks and hold-up circuits |
| RthJC | 25 °C/W - Enables direct PCB copper pour thermal path for >1.5 W dissipation without external heatsink |
Pinout & Package
FRS2MD uses the DO-221AC (F3-D) surface-mount package: a molded, lead-free, halogen-free SMD outline with cathode-marked anode-cathode terminals and 0.035 g mass. Thermal pad is not electrically isolated; case serves as cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry | Connected to switch node (e.g., MOSFET drain) in freewheeling/clamp paths |
| Cathode (marked end) | Forward current exit / common reference | Connected to output rail or ground return; serves as thermal interface to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Rev_C qualified | Validated for automotive powertrain and body electronics requiring extended temperature and reliability compliance |
| Glass passivated chip | Prevents moisture-induced degradation and ensures long-term parameter stability in humid environments |
| Low VF and low IR | Reduces combined conduction + leakage loss to <2.7 W at 2 A/100°C, easing thermal design |
| DO-221AC package | Enables automated placement and reflow compatibility while delivering 25°C/W junction-to-case thermal resistance |
Applications
| Switch-Mode Power Supply Clamp | Automotive LED Driver Freewheeling |
|---|---|
Use Scenario: Clamping voltage spikes across primary-side MOSFETs in flyback converters during transformer reset. IC Role / Device Role / Timing Role: Fast-recovery diode absorbing inductive energy to limit VDS stress below 80% of MOSFET rating. Use Value: 500 ns Trr prevents tail current overlap with next switching cycle, reducing EMI and MOSFET avalanche risk. | Use Scenario: Providing freewheeling path for inductive current in constant-current LED drivers for automotive exterior lighting. IC Role / Device Role / Timing Role: Unidirectional current recirculation path during PWM off-time to maintain LED current continuity. Use Value: AEC-Q101 qualification and -55°C to +150°C operation ensure reliability across vehicle cabin and under-hood thermal profiles. |
| Industrial DC Link Snubber | AC-DC Adapter Demagnetization |
Use Scenario: Absorbing transient energy from IGBT or SiC MOSFET switching edges in motor drive DC link circuits. IC Role / Device Role / Timing Role: High-voltage, low-leakage diode in RC snubber network to dampen ringing and suppress dv/dt-induced false triggering. Use Value: 1000 V VRRM withstands bus overvoltage events; 5 µA IR minimizes snubber resistor self-heating at standby. | Use Scenario: Demagnetizing transformer core in low-cost AC-DC adapters using discontinuous conduction mode (DCM) flyback topology. IC Role / Device Role / Timing Role: Secondary-side rectifier conducting only during transformer energy transfer phase, then blocking during reset. Use Value: 2.0 A I(AV) supports 25–40 W output; DO-221AC footprint allows dense layout with minimal board area. |
Availability
FRS2MD is available at Aetrix Electronics and suitable for industrial power supplies, automotive LED drivers, and consumer AC-DC adapters requiring stable component supply and AEC-Q101-compliant discrete diodes.
Supply support for FRS2MD 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management and signal integrity solutions for automotive, industrial, and computing markets.
The FRS2MD belongs to Diodes' fast recovery rectifier product line, engineered specifically for high-efficiency, high-voltage switching applications where low Trr, low VF, and AEC-Q101 reliability are critical.
FAQ
What is the maximum junction temperature for FRS2MD?
The FRS2MD has a specified operating junction temperature range of –55°C to +150°C. Its thermal resistance (RthJC = 25°C/W) allows safe operation at full 2.0 A load when mounted on ≥1 cm² of 2-oz copper with adequate airflow or convection cooling. Derating begins above 95°C case temperature per the forward current curve.
Is FRS2MD compatible with lead-free reflow soldering processes?
Yes. FRS2MD features matte tin-plated terminals and is qualified for standard Pb-free reflow profiles, including JEDEC J-STD-020 Level 1 moisture sensitivity. The DO-221AC package withstands peak temperatures up to 260°C for 10 seconds without delamination or parametric shift.
How does FRS2MD compare to standard PN junction rectifiers in switching applications?
Unlike general-purpose rectifiers with Trr > 2 µs, FRS2MD's 500 ns recovery time reduces reverse recovery charge (Qrr) by >80%, minimizing switching losses, voltage overshoot, and EMI generation in 65–130 kHz converters. Its lower VF also improves efficiency at high load currents.
Can FRS2MD be used in place of Schottky diodes in high-voltage designs?
No - Schottky diodes lack the 1000 V VRRM capability of FRS2MD and typically max out at ~200 V. FRS2MD fills the high-voltage fast-recovery niche where Schottkys fail; it trades higher VF than Schottkys but delivers superior voltage rating, temperature stability, and leakage performance above 200 V.
FRS2MD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 16pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
FRS2MD FAQ
1.How can I place an order for FRS2MD through Aetrix?
Please submit a Request for Quotation (RFQ) for FRS2MD 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 FRS2MD reliable?
The price and inventory of FRS2MD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FRS2MD is usually 5 days.
3.What payment methods are accepted for FRS2MD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FRS2MD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FRS2MD?
FRS2MD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FRS2MD 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 FRS2MD?
For technical support, including FRS2MD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FRS2MD requirements.
6.How does Aetrix verify that FRS2MD is sourced from the original manufacturer or authorized distributors?
All FRS2MD 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 FRS2MD meets industry standards.
7.What is the process for return or replacement of FRS2MD?
All FRS2MD units undergo pre-shipment inspection (PSI). If there is an issue with FRS2MD, 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 FRS2MD part is unused and in its original packaging.
Return procedure for FRS2MD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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