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

Vishay General Semiconductor - Diodes Division SE20FD-M3/I

Name: SE20FD-M3/I
Brand: Vishay General Semiconductor - Diodes Division
SKU: SE20FD-M3/I
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SE20FD-M3/I

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-219AB

Datasheet:: SE20FD-M3/I.pdf

Description:: DIODE GEN PURP 200V 1.7A DO219AB

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Product details

Overview

SE20FD-M3/I from Vishay General Semiconductor is a surface-mount standard rectifier diode in the eSMP® Series, configured as a single anode-cathode device with 200 V maximum repetitive peak reverse voltage (V_RRM), 2.0 A average forward current (I_F(AV)), and 0.85 V forward voltage at 2.0 A and 125 °C. It is used for power line polarity protection in automotive, industrial, and commercial DC power supplies.

For engineers reviewing the SE20FD-M3/I datasheet, SE20FD-M3/I pinout, SE20FD-M3/I application, or SE20FD-M3/I equivalent, key selection factors include its SMF (DO-219AB) package compatibility, AEC-Q101 qualification eligibility (via HM3 suffix), low thermal resistance (R_θJM = 20 °C/W), and 175 °C maximum junction temperature.

Technical Context

This device implements a planar oxide junction structure optimized for low forward voltage drop and minimal leakage current. Its 920 ns typical reverse recovery time (t_rr) and 13 pF junction capacitance (C_J) support moderate-speed switching in non-resonant rectification circuits.

Designed for wave and reflow soldering, it meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance. The matte tin-plated terminals and halogen-free, RoHS-compliant molding compound align with automotive and industrial reliability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum reverse blocking capability without breakdown under repetitive conditions
I_F(AV)	2.0 A - Continuous DC forward current rating on 10 mm × 10 mm 2 oz. FR4 pad
V_F @ 2.0 A, 125 °C	0.85 V - Low conduction loss enabling high-efficiency rectification at elevated temperatures
I_R @ 200 V, 125 °C	7.6 μA - Minimal leakage ensures stable operation in high-temperature bias networks
t_rr	920 ns - Enables use in 50–100 kHz linear and quasi-resonant power supplies
T_J max.	175 °C - Supports operation in under-hood automotive environments and sealed industrial enclosures
R_θJM	20 °C/W - Low junction-to-mount thermal resistance facilitates direct thermal coupling to heatsink pads

Pinout & Package

Package: SMF (DO-219AB), low-profile surface-mount case with cathode band marking; compatible with automated placement and meets UL 94 V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry terminal	Connected to input-side of rectifier stage; requires adequate copper pour for thermal dissipation
Cathode	Forward current exit / reverse-blocking terminal	Marked by color band; ties to output rail or ground return path in polarity protection configurations

Key Features

Feature	Design Value
Low profile SMF package	Height ≤ 1.3 mm enables ultra-thin power supply designs and PCB stacking
Oxide planar chip junction	Stable V_F and I_R over temperature and lifetime vs. diffused junction alternatives
ESD robustness	H3B-class human body model rating (> 8 kV) supports handling in unshielded assembly lines
AEC-Q101 qualification path	HM3 suffix variant available for automotive applications requiring stress-tested reliability
Halogen-free & RoHS-compliant	Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements

Applications

Power Supply Input Protection	Automotive Body Control Module
Use Scenario: Reverse-polarity protection at 12 V battery input of wall adapters and AC/DC front-ends. IC Role / Device Role / Timing Role: Standalone discrete rectifier providing unidirectional current flow and blocking reverse voltage transients. Use Value: 200 V V_RRM withstands load-dump spikes; 0.85 V V_F minimizes insertion loss in low-voltage rails.	Use Scenario: Polarity safeguard for 12 V inputs in door module, lighting, or HVAC control units. IC Role / Device Role / Timing Role: Discrete protection diode placed upstream of LDOs and microcontrollers. Use Value: 175 °C T_J max. and AEC-Q101-qualified variants ensure reliability in under-dash environments.
Industrial Sensor Interface Power	Commercial IoT Gateway Power Stage
Use Scenario: Input rectification and reverse protection for 24 V fieldbus-powered sensors. IC Role / Device Role / Timing Role: Single-diode bridge leg replacement in compact 2-pin footprint. Use Value: 35 A I_FSM handles inrush surges during hot-plug events; R_θJM = 20 °C/W enables direct PCB thermal anchoring.	Use Scenario: DC input conditioning for PoE-powered edge gateways operating in ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Polarity guard before buck converter ICs and PMICs. Use Value: 5 μA I_R at 25 °C ensures negligible standby current drain in always-on connectivity modules.

Power Supply Input Protection

Automotive Body Control Module

Use Scenario: Reverse-polarity protection at 12 V battery input of wall adapters and AC/DC front-ends.

IC Role / Device Role / Timing Role: Standalone discrete rectifier providing unidirectional current flow and blocking reverse voltage transients.

Use Value: 200 V V_RRM withstands load-dump spikes; 0.85 V V_F minimizes insertion loss in low-voltage rails.

Use Scenario: Polarity safeguard for 12 V inputs in door module, lighting, or HVAC control units.

IC Role / Device Role / Timing Role: Discrete protection diode placed upstream of LDOs and microcontrollers.

Use Value: 175 °C T_J max. and AEC-Q101-qualified variants ensure reliability in under-dash environments.

Industrial Sensor Interface Power

Commercial IoT Gateway Power Stage

Use Scenario: Input rectification and reverse protection for 24 V fieldbus-powered sensors.

IC Role / Device Role / Timing Role: Single-diode bridge leg replacement in compact 2-pin footprint.

Use Value: 35 A I_FSM handles inrush surges during hot-plug events; R_θJM = 20 °C/W enables direct PCB thermal anchoring.

Use Scenario: DC input conditioning for PoE-powered edge gateways operating in ambient temperatures up to 70 °C.

IC Role / Device Role / Timing Role: Polarity guard before buck converter ICs and PMICs.

Use Value: 5 μA I_R at 25 °C ensures negligible standby current drain in always-on connectivity modules.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SB220-E3/52	Lower V_RRM (20 V), higher I_F(AV) (2.0 A), Schottky architecture, no reverse recovery	Better for <24 V low-loss DC-DC inputs; unsuitable for 200 V line-referenced protection	Select when ultra-low V_F (<0.5 V) and zero t_rr are critical, and reverse voltage is ≤ 20 V
ES2D-E3/57T	Same V_RRM (200 V), same I_F(AV) (2.0 A), SMA package (DO-214AC), higher R_θJA (65 °C/W)	Less thermally efficient on small pads; widely stocked but larger footprint	Choose if legacy SMA layout exists and thermal derating margin allows 65 °C/W ambient rise

Compared with SB220-E3/52 and ES2D-E3/57T, SE20FD-M3/I delivers superior thermal performance (R_θJM = 20 °C/W), tighter V_F consistency across temperature, and DO-219AB space savings-making it optimal for new designs targeting automotive-grade reliability and high-density layouts.

Availability

SE20FD-M3/I is available at Aetrix Electronics and suitable for power line polarity protection, industrial sensor interface power, and commercial IoT gateway power stages requiring stable component supply and long-term manufacturability.

Supply support for SE20FD-M3/I 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.

The eSMP® Series-including SE20FD-M3/I-is engineered for high-power-density surface-mount rectification in automotive, industrial, and consumer power systems where thermal performance and board space are constrained.

FAQ

What is the maximum junction temperature rating for SE20FD-M3/I?

The SE20FD-M3/I has a maximum junction temperature (T_J) rating of +175 °C, verified per Vishay's thermal characterization data. This allows reliable operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 100 °C. Derating curves in the SE20FD-M3/I datasheet confirm sustained 2.0 A conduction up to 125 °C mount temperature on recommended PCB pads.

Is SE20FD-M3/I AEC-Q101 qualified?

No-SE20FD-M3/I is not AEC-Q101 qualified. However, the automotive-grade variant SE20FDHM3/I (with HM3 suffix) is fully AEC-Q101 qualified. The base SE20FD-M3/I shares identical electrical and mechanical specifications but lacks the extended stress testing required for automotive qualification. For automotive designs, specify the HM3 suffix version to ensure compliance.

What does the "M3/I" suffix mean in SE20FD-M3/I?

The "M3" suffix denotes halogen-free, RoHS-compliant construction per Vishay's material policy; "I" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 10,000 units. This differs from "H"-suffixed reels (7-inch, 3,000 units). Both M3 variants meet JESD 201 Class 2 whisker resistance and J-STD-020 MSL Level 1.

Can SE20FD-M3/I replace a DO-41 or DO-204AL rectifier in existing designs?

No-SE20FD-M3/I uses the SMF (DO-219AB) surface-mount package and is not a drop-in replacement for through-hole DO-41 or DO-204AL devices. Its 2.9 mm × 1.4 mm footprint and 1.3 mm height require PCB redesign. For through-hole equivalents, consider Vishay's 1N4007G or SF22, not SE20FD-M3/I.

What is the reverse recovery time (t_rr) of SE20FD-M3/I, and how does it affect switching performance?

The SE20FD-M3/I has a typical reverse recovery time (t_rr) of 920 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This value limits its use to switching frequencies below ~100 kHz in hard-switched topologies. It is well-suited for offline AC-DC inputs, DC-DC pre-regulators, and polarity protection-but not for high-frequency synchronous rectification where Schottky or GaN devices are preferred.

SE20FD-M3/I Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-219AB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 1.7A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 2 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 920 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 200 V

Capacitance @ Vr, F:: 13pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-219AB (SMF)

Operating Temperature - Junction:: -55°C ~ 175°C

SE20FD-M3/I FAQ

1.How can I place an order for SE20FD-M3/I through Aetrix?

Please submit a Request for Quotation (RFQ) for SE20FD-M3/I 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 SE20FD-M3/I reliable?

The price and inventory of SE20FD-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SE20FD-M3/I is usually 5 days.

3.What payment methods are accepted for SE20FD-M3/I?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SE20FD-M3/I transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SE20FD-M3/I?

SE20FD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SE20FD-M3/I 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 SE20FD-M3/I?

For technical support, including SE20FD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SE20FD-M3/I requirements.

6.How does Aetrix verify that SE20FD-M3/I is sourced from the original manufacturer or authorized distributors?

All SE20FD-M3/I 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 SE20FD-M3/I meets industry standards.

7.What is the process for return or replacement of SE20FD-M3/I?

All SE20FD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SE20FD-M3/I, 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 SE20FD-M3/I part is unused and in its original packaging.

Return procedure for SE20FD-M3/I:

1.Submit a request within 90 days.

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

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