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Vishay General Semiconductor - Diodes Division SE20FG-M3/I
- Part No.:
- SE20FG-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
SE20FG-M3/I.pdf
- Description:
- DIODE GEN PURP 400V 1.7A DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,580
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Product details
Overview
SE20FG-M3/I from Vishay General Semiconductor is a surface-mount standard rectifier diode in the eSMP® Series, configured as a single silicon junction device with 400 V maximum repetitive peak reverse voltage (VRRM), 2.0 A average forward current (IF(AV)), and 0.85 V forward voltage at 2.0 A and 125 °C - used for polarity protection and DC power conditioning in automotive and industrial power supplies.
For engineers reviewing the SE20FG-M3/I datasheet, SE20FG-M3/I pinout, SE20FG-M3/I application, or SE20FG-M3/I equivalent, key selection considerations include its DO-219AB (SMF) package compatibility, AEC-Q101 qualification path (via HM3 suffix), low thermal resistance (RθJM = 20 °C/W), and 920 ns typical reverse recovery time in switching-constrained rectification circuits.
Technical Context
This device implements an oxide planar chip junction for stable leakage performance and low forward voltage drop across temperature. Its 175 °C maximum junction temperature and 35 A non-repetitive surge rating support high-reliability operation in thermally demanding environments such as engine control units and industrial motor drives.
The SMF (DO-219AB) package enables automated placement and wave/reflow soldering, with matte tin-plated terminals compliant to J-STD-002 and JESD 22-B102. ESD immunity exceeds 8 kV (HBM Class H3B), and MSL Level 1 rating confirms robust moisture sensitivity handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports rectification in 24–48 V DC systems with 2× safety margin against transients |
| IF(AV) | 2.0 A - continuous conduction capability on 10 mm × 10 mm 2 oz. FR4 copper pad |
| VF @ 2.0 A, 125 °C | 0.85 V - reduces conduction loss and thermal stress in high-temperature ambient operation |
| IR @ 400 V, 125 °C | 100 μA - ensures minimal leakage-induced standby power loss in battery-backed systems |
| trr | 920 ns - limits switching losses and EMI generation in medium-frequency (<100 kHz) rectifier stages |
| RθJM | 20 °C/W - enables efficient heat transfer to PCB mount surface, critical for compact power designs |
| Junction capacitance | 13 pF @ 4.0 V, 1 MHz - minimizes capacitive loading in fast-switching feedback paths |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case with cathode band marking; compatible with SOD-123W footprint guidelines but dimensionally distinct (3.9 mm × 1.7 mm × 1.08 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input-side of unidirectional power path; must be routed with adequate current-carrying trace width |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by color band; ties to output rail or ground return; determines polarity protection direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification path | Available via HM3 suffix variant - enables direct use in automotive power modules without requalification |
| Low thermal resistance (RθJM) | 20 °C/W - allows >1.5 W dissipation on standard PCB mount without heatsink in derated conditions |
| ESD immunity | >8 kV HBM (Class H3B) - protects against assembly-handling and in-system electrostatic events |
| Halogen-free & RoHS-compliant | M3 suffix denotes full compliance - satisfies environmental requirements for EU, China, and automotive supply chains |
| Wave/reflow solderable | Rated for 260 °C peak reflow per J-STD-020 - supports high-volume SMT manufacturing without lead finish degradation |
Applications
| Power Supply Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Reverse-polarity protection at DC input of 24 V industrial SMPS. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during incorrect battery connection. Use Value: 400 V VRRM withstands load-dump transients; 0.85 V VF at 125 °C minimizes voltage drop under hot ambient conditions. | Use Scenario: Polarity safeguard in 12 V BCM power rail feeding microcontroller and CAN transceivers. IC Role / Device Role / Timing Role: Standalone discrete rectifier ensuring system integrity during jump-start or service disconnect events. Use Value: AEC-Q101-qualified variants (HM3) validated for automotive temperature cycling; M3 version offers same reliability baseline for cost-sensitive designs. |
| Industrial Motor Drive Auxiliary Supply | Smart Sensor Node Power Conditioning |
Use Scenario: Half-wave rectification for isolated auxiliary 5 V/3.3 V supply in variable-frequency drive control board. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element feeding linear regulator or buck controller. Use Value: 920 ns trr avoids excessive switching noise near sensitive analog circuitry; 13 pF CJ prevents RF coupling into feedback networks. | Use Scenario: Input-stage rectification in battery-powered IoT sensor node with USB or solar charging interface. IC Role / Device Role / Timing Role: Low-leakage polarity guard enabling multi-year shelf life and ultra-low quiescent current operation. Use Value: 100 μA IR at 125 °C preserves battery capacity over extended storage; DO-219AB footprint supports miniaturized PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SE20FJ-M3/I | 600 V VRRM, identical package, thermal, and surge ratings | Higher reverse voltage margin required in 48 V telecom or PoE+ systems | Select when design requires ≥500 V blocking capability without layout change |
| ON Semiconductor MUR220RLG | 200 V VRRM, TO-220AC package, 75 ns trr, higher IF(AV) = 2.0 A | Lower VRRM and faster recovery suit high-frequency flyback snubbers | Choose for space-tolerant designs needing faster switching; not drop-in due to through-hole package |
Compared with SE20FJ-M3/I, the SE20FG-M3/I trades 200 V lower reverse voltage for tighter thermal performance in constrained layouts; versus MUR220RLG, it delivers superior board-level integration and moisture resilience but lacks ultrafast recovery for resonant topologies.
Availability
SE20FG-M3/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial power supplies, and smart sensor nodes requiring stable component supply with halogen-free, RoHS-compliant sourcing.
Supply support for SE20FG-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 and application-specific optimization.
The eSMP® Series - including SE20FG-M3/I - was developed for high-density power management in automotive, industrial, and computing applications where low profile, thermal efficiency, and AEC-Q101 readiness are essential.
FAQ
What is the maximum junction temperature rating for SE20FG-M3/I?
The SE20FG-M3/I has a maximum junction temperature (TJ) of +175 °C, enabling operation in under-hood automotive environments and high-ambient industrial enclosures. This rating is validated per JEDEC standards and supported by its RθJM of 20 °C/W. Derating curves in the Vishay datasheet (Doc. #87724) define safe operating area boundaries up to this limit. The SE20FG-M3/I maintains specified electrical parameters within this range when mounted per recommended PCB pad layout.
Is SE20FG-M3/I AEC-Q101 qualified?
No - SE20FG-M3/I is not AEC-Q101 qualified. Qualification is only available for the HM3-suffix variant (e.g., SE20FGHM3/I). The M3 suffix indicates halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance, but does not imply automotive qualification. For automotive applications requiring formal AEC-Q101 validation, engineers must specify the HM3 version. The SE20FG-M3/I remains suitable for industrial and commercial designs where AEC-Q101 is not mandated.
What does the "I" suffix mean in SE20FG-M3/I?
The "I" suffix in SE20FG-M3/I denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 10,000 units per reel. This contrasts with the "H" suffix (7-inch reel, 3,000 units). Both M3/I and M3/H share identical electrical, thermal, and mechanical specifications - the suffix solely identifies reel size and quantity. The SE20FG-M3/I is optimized for high-volume SMT line feeding and automated pick-and-place systems requiring extended reel runtime.
How does SE20FG-M3/I compare to SE20FD-M3/I in terms of reverse voltage rating?
The SE20FG-M3/I has a maximum repetitive peak reverse voltage (VRRM) of 400 V, while SE20FD-M3/I is rated at 200 V. Both share identical package (SMF), forward current (2.0 A), thermal resistance (RθJM = 20 °C/W), and reverse recovery time (~920 ns). The VRRM difference defines their application segmentation: SE20FG-M3/I targets 24–48 V systems with higher transient margins, whereas SE20FD-M3/I suits 12 V or low-voltage DC distribution where cost and footprint are prioritized over voltage headroom.
Can SE20FG-M3/I be used in reflow soldering processes?
Yes - SE20FG-M3/I is fully compatible with standard lead-free reflow soldering profiles, rated for a maximum peak temperature of 260 °C per J-STD-020 MSL Level 1. Its matte tin-plated terminals meet J-STD-002 and JESD 22-B102 solderability requirements. The device's DO-219AB package geometry supports uniform heating and reliable joint formation. No special pre-bake or process modifications are needed when using the SE20FG-M3/I in production reflow lines conforming to IPC-J-STD-020.
SE20FG-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):
- 400 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 @ 400 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
SE20FG-M3/I FAQ
1.How can I place an order for SE20FG-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SE20FG-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 SE20FG-M3/I reliable?
The price and inventory of SE20FG-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 SE20FG-M3/I is usually 5 days.
3.What payment methods are accepted for SE20FG-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SE20FG-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SE20FG-M3/I?
SE20FG-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SE20FG-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 SE20FG-M3/I?
For technical support, including SE20FG-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SE20FG-M3/I requirements.
6.How does Aetrix verify that SE20FG-M3/I is sourced from the original manufacturer or authorized distributors?
All SE20FG-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 SE20FG-M3/I meets industry standards.
7.What is the process for return or replacement of SE20FG-M3/I?
All SE20FG-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SE20FG-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 SE20FG-M3/I part is unused and in its original packaging.
Return procedure for SE20FG-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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