RS1M 1000V 1A Fast Recovery Diode SMA DO-214AC

RS1M 1000V 1A Fast Recovery Diode in the SMA (DO-214AC) package is a highly efficient semiconductor component engineered for high-frequency rectification applications. This diode boasts a remarkable 1000V repetitive peak reverse voltage and can continuously handle 1A of forward current, making it suitable for demanding power supplies and switching circuits. Its defining feature is the fast reverse recovery time, which significantly minimizes switching losses and enhances the overall efficiency of power conversion circuits operating at high speeds. Because of its compact Surface Mount Device (SMD) form factor, the RS1M is the perfect choice for miniaturized electronic assemblies where both performance and space savings are critical design constraints.

Key Features:

• High Reverse Voltage: Offers a 1000V (V_RRM) rating, providing a large safety margin for high-voltage applications and suppressing transient voltage spikes.
• Fast Recovery Time: Minimizes switching losses and electromagnetic interference (EMI) in high-frequency power circuits.
• High Current Capability: Sustains a 1A average rectified current (I_O) in a compact footprint.
• Low Forward Voltage Drop: Reduces power dissipation and improves the efficiency of the power stage.
• Surface Mount Package: Supplied in the compact SMA (DO-214AC) package, perfect for high-density, automated PCB assembly.

Technical Specifications:

• Maximum Peak Reverse Voltage (V_RRM): 1000 V
• Average Rectified Current (I_O): 1.0 A
• Maximum Forward Voltage Drop (V_F): ≈ 1.3 V @ 1.0 A
• Maximum Reverse Recovery Time (t_rr): ≈ 500 ns (Nanoseconds)
• Junction Operating Temperature (T_J): -55°C to +150°C

Mechanical Specifications:

• Package Type: SMA (DO-214AC)
• Mounting Style: Surface Mount Device (SMD)
• Polarity: Cathode band indicates the cathode terminal.
• Moisture Sensitivity Level (MSL): Varies by manufacturer (Typically MSL 1 or 3)

Dimensions:

• Body Length (L): ≈ 4.0 mm to 4.6 mm
• Body Width (W): ≈ 2.4 mm to 2.8 mm
• Height (H): ≈ 1.9 mm to 2.2 mm
• Weight: ≈ 0.07 g

Pinout and Wiring:

• Anode (A): The positive terminal; current enters here during forward bias.
• Cathode (K): The negative terminal; current leaves here. The cathode is always marked with a visible band or stripe on the device body.
• Mounting Orientation: For rectification, place the cathode (band side) towards the load’s positive side. For protection (freewheeling), place the cathode at the supply voltage.

Datasheet Reference:

• Download RS1M Fast Recovery Diode Datasheet

Commonly Used in:

• Switch-Mode Power Supplies (SMPS): Essential components in the output rectification stage.
• DC-DC Converters: Providing high-speed rectification in boost, buck, and other topologies.
• Industrial Control Systems: Used for general rectification and signal clamping.

Applications:

• Output Rectification: Converting high-frequency AC power from a transformer to DC power efficiently.
• Reverse Polarity Protection: Preventing damage to circuits from accidentally reversed power connections.
• Freewheeling/Snubber Diode: Protecting switching transistors (like MOSFETs or IGBTs) from inductive load spikes in motors and relays.

Equivalent Models:

• RS1K, RS1G: Lower voltage versions (e.g., 800V, 400V) in the same package.
• UF4007: A similar 1A, 1000V fast recovery diode, typically in a through-hole (DO-41) package.
• SMC (DO-214AB) Package: A larger, higher-power surface mount alternative.

Package Includes:

• 1 x RS1M 1000V 1A Fast Recovery Diode (SMA DO-214AC)