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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated STPR820D

Name: STPR820D
Brand: Diodes Incorporated
SKU: STPR820D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STPR820D

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STPR820D.pdf

Description:: DIODE GEN PURP 200V 8A TO220AC

Quantity:: RFQ Add To RFQ list

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Inventory:30

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Product details

Overview

STPR820D from Diodes Incorporated is a 200 V, 8.0 A power factor correction (PFC) rectifier diode in TO-220AC package, featuring 1.1 V forward voltage at 8.0 A and 25°C, 30 ns reverse recovery time, and 90 A surge current capability. It serves as the main boost diode in continuous conduction mode (CCM) PFC stages of AC-DC front-end supplies for industrial SMPS and LED drivers.

For engineers reviewing the STPR820D datasheet, STPR820D pinout, STPR820D application, or STPR820D equivalent, key selection criteria include its 200 V V_RRM, 3.0 °C/W R_ΘJC, low 10 µA I_R at 25°C, and glass-passivated superfast switching performance in high-frequency PFC circuits.

Technical Context

This device is a single-die, planar, epitaxial silicon fast recovery rectifier optimized for active PFC topologies operating above 50 kHz. Its 30 ns t_RR and low Q_rr minimize switching losses in boost converters, while the 1.1 V V_F at rated current reduces conduction loss under full-load conditions.

The TO-220AC package provides direct metal-to-heatsink thermal path with 3.0 °C/W junction-to-case resistance, enabling stable operation at T_J = 150°C when mounted on a 100 mm × 100 mm × 1.6 mm Cu plate. Polarity is marked on the body with cathode stripe.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum peak reverse voltage sustainable without breakdown; sets upper limit for PFC bus voltage design.
I(AV)	8.0 A @ T_C = 100°C - Average forward current rating defining continuous conduction capability in thermally managed designs.
V_F	1.1 V @ 8.0 A, 25°C - Forward voltage drop directly impacting conduction loss and thermal rise in boost diode position.
t_RR	30 ns - Reverse recovery time determining switching loss and EMI generation in high-frequency PFC stages.
I_FSM	90 A - Peak non-repetitive surge current tolerance, critical for handling line transients and startup inrush.
R_ΘJC	3.0 °C/W - Junction-to-case thermal resistance enabling accurate heatsink sizing for 150°C max junction operation.
I_R	10 µA @ 200 V, 25°C - Low leakage current preserving efficiency and reliability in high-impedance PFC feedback paths.

Pinout & Package

TO-220AC package: 3-lead, single-ended anode-cathode configuration with isolated tab (cathode-connected). Mounting via tab to heatsink; polarity indicated by cathode stripe on case.

Pin/Terminal	Circuit Role	Design Meaning
Lead 1 (Anode)	Anode connection	Input terminal for AC/boost inductor current; requires low-inductance PCB routing to minimize ringing.
Lead 2 (Cathode)	Cathode connection	Output node tied to PFC output capacitor; electrically connected to metal tab for thermal conduction.
Metal Tab	Cathode / Thermal path	Internally bonded to cathode; must be electrically isolated from chassis unless system ground reference permits.

Key Features

Feature	Design Value
Superfast recovery	30 ns t_RR enables >100 kHz PFC operation with minimal switching loss and reduced EMI.
Glass passivation	Robust surface protection against moisture and contamination, supporting long-term reliability in humid environments.
Low V_F at high current	1.1 V @ 8 A ensures <1.5 W conduction loss per diode at full load, easing thermal management.
High surge rating	90 A I_FSM withstands repetitive line surges and cold-start inrush without degradation.
UL 94V-0 plastic	Flame-retardant housing meets safety standards for enclosed industrial and lighting power supplies.

Applications

Industrial SMPS Front-End

LED Driver Power Stage

Use Scenario: 1–3 kW AC-DC power supply for factory automation controllers requiring >0.95 PF and EN61000-3-2 compliance.

IC Role / Device Role / Timing Role: Main boost rectifier in CCM PFC controller stage, conducting during switch-off interval.

Use Value: 30 ns t_RR and 1.1 V V_F reduce total losses by ~12% vs. standard FRDs, improving efficiency to >95% at full load.

Use Scenario: Outdoor streetlight driver with universal input (90–305 VAC) and 150 W constant-current output.

IC Role / Device Role / Timing Role: Output rectifier in interleaved two-phase PFC, handling 8 A average current per phase.

Use Value: 90 A I_FSM sustains repeated lightning-induced surges; 10 µA I_R prevents capacitor discharge drift in standby mode.

Server PSU Input Stage

Medical AC-DC Adapter

Use Scenario: Redundant 80 PLUS Titanium PSUs for data center servers operating at 48 V output and 230 VAC input.

IC Role / Device Role / Timing Role: Primary PFC diode in dual-boost topology, switching at 120 kHz with synchronous rectification assist.

Use Value: 3.0 °C/W R_ΘJC allows direct mounting to shared heatsink, reducing thermal interface layers and system footprint.

Use Scenario: IEC 60601-1 compliant 60 W medical adapter with double-insulation and low leakage requirements.

IC Role / Device Role / Timing Role: Isolated PFC rectifier where low I_R (<10 µA) prevents patient leakage current exceedance.

Use Value: Glass passivation and RoHS-compliant finish meet biocompatibility and environmental compliance mandates for Class II medical devices.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PFC rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH8R02DJF	200 V V_RRM, 8 A I(AV), but 45 ns t_RR and 1.25 V V_F at 8 A.	Higher conduction and switching loss; suitable only for lower-frequency PFC designs (<65 kHz).	Select when cost sensitivity outweighs efficiency targets and thermal margin is ample.
DF08S20	200 V V_RRM, 8 A I(AV), but TO-277 package (no isolated tab), 50 ns t_RR, and 1.3 V V_F.	No metal tab for heatsinking; limited to surface-mount or low-power PFC where thermal budget is relaxed.	Choose for space-constrained SMT layouts where discrete heatsinking is impractical.

Compared with STTH8R02DJF and DF08S20, STPR820D delivers superior thermal performance via TO-220AC tab mounting, lowest V_F, and fastest t_RR, making it optimal for high-efficiency, high-power-density PFC stages demanding tight thermal control and low EMI.

Availability

STPR820D is available at Aetrix Electronics and suitable for industrial SMPS front-ends, LED driver power stages, and medical AC-DC adapters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for STPR820D 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-performance power management, signal integrity, and protection solutions.

The STPR series belongs to Diodes' Power Factor Correction Rectifier product line, engineered specifically for high-frequency, high-efficiency boost PFC stages in industrial, lighting, and computing power supplies.

FAQ

What is the maximum junction temperature for continuous operation?

The STPR820D supports continuous operation up to +150°C junction temperature, verified per JEDEC test conditions. Derating begins above 100°C case temperature, and thermal design must ensure R_ΘJA remains within limits using the specified 100 mm × 100 mm × 1.6 mm Cu heatsink reference.

Is STPR820D qualified for automotive applications?

No - STPR820D is not AEC-Q101 qualified. Diodes offers automotive-grade variants (e.g., STPR820DQ) with PPAP documentation and IATF 16949 manufacturing; standard STPR820D is intended for industrial, commercial, and medical power supplies.

How does the TO-220AC package differ from TO-220AB in this diode?

TO-220AC has a single isolated tab (cathode-connected), whereas TO-220AB features three leads with insulated tab. STPR820D uses TO-220AC: lead 1 = anode, lead 2 = cathode, tab = cathode - requiring electrical isolation from chassis unless referenced to system ground.

Can STPR820D replace STPR860D in a 400 V PFC design?

No - STPR820D has 200 V V_RRM and is unsuitable for 400 V bus applications. STPR860D (600 V V_RRM) is required for designs with peak bus voltages exceeding 280 V DC; substituting STPR820D risks catastrophic reverse breakdown.

STPR820D Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 8 A

Speed:: Fast Recovery =< 500ns, > 5A (Io)

Reverse Recovery Time (trr):: 30 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

Operating Temperature - Junction:: -55°C ~ 150°C

STPR820D FAQ

1.How can I place an order for STPR820D through Aetrix?

Please submit a Request for Quotation (RFQ) for STPR820D 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 STPR820D reliable?

The price and inventory of STPR820D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STPR820D is usually 5 days.

3.What payment methods are accepted for STPR820D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STPR820D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STPR820D?

STPR820D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STPR820D 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 STPR820D?

For technical support, including STPR820D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STPR820D requirements.

6.How does Aetrix verify that STPR820D is sourced from the original manufacturer or authorized distributors?

All STPR820D 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 STPR820D meets industry standards.

7.What is the process for return or replacement of STPR820D?

All STPR820D units undergo pre-shipment inspection (PSI). If there is an issue with STPR820D, 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 STPR820D part is unused and in its original packaging.

Return procedure for STPR820D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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