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Vishay VSSAF5103HM3/H
- Part No.:
- VSSAF5103HM3/H
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
VSSAF5103HM3/H.pdf
- Description:
- 5A, 100V, SLIM SMA TRENCH SKY RE
- Quantity:
- Payment:
- Shipping:
Inventory:3,234
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Product details
Overview
VSSAF5103HM3/H from Vishay General Semiconductor is a surface-mount Trench MOS Barrier Schottky (TMBS®) rectifier in SlimSMA (DO-221AC) package, rated for 100 V repetitive peak reverse voltage, 5 A average forward current at 125 °C, and 0.59 V forward voltage at 5 A/125 °C. It serves as a high-efficiency freewheeling or polarity protection diode in DC/DC converters and automotive power systems.
For engineers reviewing the VSSAF5103HM3/H datasheet, VSSAF5103HM3/H pinout, VSSAF5103HM3/H application, or VSSAF5103HM3/H equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low profile (0.95 mm height), MSL Level 1 rating, 150 °C max junction temperature, and verified thermal resistance of 115 °C/W (junction-to-ambient).
Technical Context
This device implements trench MOS Schottky technology to achieve low forward voltage drop and minimal conduction losses-critical for high-frequency switching topologies. Its single-diode configuration supports unidirectional current flow with cathode band marking and matte tin-plated terminals compliant with J-STD-002 solderability standards.
The SlimSMA (DO-221AC) package enables automated placement and delivers enhanced thermal performance via optimized copper pad layout. With RθJM = 12 °C/W and RθJA = 115 °C/W (on recommended 30 mm × 30 mm pad), it sustains continuous operation up to 150 °C junction temperature under defined thermal boundary conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum reverse blocking capability without breakdown in repetitive applications |
| IF(AV) | 5 A at TJ = 125 °C - Continuous forward current rating under thermally constrained PCB mounting |
| VF @ 5 A / 125 °C | 0.59 V - Low conduction loss enabling >92 % efficiency in 12 V–48 V DC/DC stages |
| IFSM | 100 A - Surge withstand for 8.3 ms half-sine, supporting inrush and fault-current handling |
| TJ max. | 150 °C - Extended thermal operating range suitable for under-hood automotive environments |
| CJ | 550 pF @ 4 V / 1 MHz - Low junction capacitance minimizing switching losses in >100 kHz inverters |
| RθJA | 115 °C/W - Thermal resistance defining required PCB copper area for safe power dissipation |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.35 mm × 2.70 mm × 0.95 mm (L × W × H). Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to input/source side in freewheeling or reverse-polarity protection configurations |
| Cathode | Current exit terminal | Marked with color band; ties to ground or return path; critical for correct orientation during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Trench MOS Schottky architecture | Enables lower VF vs. planar Schottky, reducing conduction loss by ≥15 % at 5 A |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without moisture-related delamination risk |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| 0.95 mm profile | Enables ultra-thin power modules and space-constrained board layouts (e.g., ADAS ECUs) |
| UL 94 V-0 molding compound | Ensures flame-retardant housing compliance for industrial and transportation safety standards |
Applications
| Automotive DC/DC Converters | Industrial Freewheeling Diodes |
|---|---|
Use Scenario: Step-down conversion in 48 V mild-hybrid vehicle subsystems powering infotainment and ADAS sensors. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter output stage. Use Value: 0.59 V VF at 5 A/125 °C reduces power loss by ~0.3 W vs. legacy Schottky, improving thermal margin in sealed enclosures. |
Use Scenario: Energy recirculation in motor drive snubber circuits and relay coil suppression. IC Role / Device Role / Timing Role: Unidirectional current path for inductive kickback energy recovery. Use Value: 100 A IFSM withstands repeated 50 A transient spikes without degradation, extending system lifetime. |
| Commercial Polarity Protection | High-Frequency Inverters |
Use Scenario: Reverse-voltage safeguard on USB-C PD input rails and PoE-powered edge devices. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage from misconnected power sources. Use Value: 100 V VRRM and 150 °C TJ max support wide-input-range designs across global mains voltages and ambient extremes. |
Use Scenario: Output rectification in resonant LLC inverters for LED drivers and solar microinverters. IC Role / Device Role / Timing Role: High-speed unidirectional switch in 200–500 kHz switching cells. Use Value: 550 pF CJ limits displacement current, reducing EMI generation and gate-drive loading in high-dV/dt environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSSAF5103-M3/H | No AEC-Q101 qualification; otherwise identical electrical specs and SlimSMA package | Suitable for commercial/industrial use only; not approved for automotive production | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SS510H | Higher VF (0.85 V @ 5 A), larger SMA package (1.8 mm height), no AEC-Q101 | Limited to lower-frequency (<100 kHz), non-automotive applications due to thermal and qualification gaps | Use only if footprint compatibility with legacy SMA layouts is mandatory and efficiency loss is acceptable |
Compared with VSSAF5103HM3/H, the VSSAF5103-M3/H offers identical performance without automotive qualification, while SS510H trades efficiency and profile for broader legacy footprint support-making VSSAF5103HM3/H the sole choice for AEC-Q101-compliant, space-constrained, high-frequency designs.
Availability
VSSAF5103HM3/H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial freewheeling circuits, and commercial polarity protection requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for VSSAF5103HM3/H 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 VSSAF5103 series belongs to Vishay's TMBS® trench Schottky rectifier product line, engineered for high-efficiency power conversion in automotive, industrial, and computing applications where low VF, compact size, and AEC-Q101 compliance are essential.
FAQ
What is the maximum junction temperature rating for VSSAF5103HM3/H?
The VSSAF5103HM3/H has a maximum junction temperature (TJ) of +150 °C, validated per AEC-Q101 stress testing. This rating allows reliable operation in under-hood automotive environments and high-ambient industrial settings when mounted on a 30 mm × 30 mm copper pad with 2 oz. thickness. Derating curves in the datasheet define safe current limits above 125 °C ambient.
Is VSSAF5103HM3/H compatible with lead-free reflow processes?
Yes, VSSAF5103HM3/H meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the package passes JESD 201 Class 2 whisker testing-ensuring robust solder joint integrity in standard lead-free assembly lines.
How does the SlimSMA (DO-221AC) package of VSSAF5103HM3/H improve thermal performance over standard SMA?
The SlimSMA (DO-221AC) package of VSSAF5103HM3/H achieves RθJM = 12 °C/W (junction-to-mount) versus ~25–30 °C/W for standard SMA, due to optimized internal thermal path and exposed cathode metal pad. This enables higher power density in thin-profile designs and reduces thermal derating requirements in space-constrained layouts.
What is the reverse leakage current of VSSAF5103HM3/H at 100 V and 125 °C?
At VR = 100 V and TJ = 125 °C, the VSSAF5103HM3/H exhibits a maximum reverse leakage current (IR) of 13 mA, as specified in the datasheet. This value reflects worst-case behavior under full-rated voltage and elevated temperature, and remains well below levels that would compromise efficiency in typical DC/DC or polarity protection applications.
Does VSSAF5103HM3/H have a documented AEC-Q101 qualification report?
Yes, VSSAF5103HM3/H carries full AEC-Q101 qualification, confirmed by Vishay's documentation (Document Number 98381, Revision 27-Sep-2022). The HM3 suffix explicitly denotes AEC-Q101 qualification, covering stress tests including HTGB, HTRB, TCT, and ESD-HBM ≥ 2 kV-making it suitable for automotive powertrain and body electronics applications.
VSSAF5103HM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2.2A
- Voltage - Forward (Vf) (Max) @ If:
- 710 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 210 µA @ 100 V
- Capacitance @ Vr, F:
- 550pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
- Operating Temperature - Junction:
- -40°C ~ 150°C
VSSAF5103HM3/H FAQ
1.How can I place an order for VSSAF5103HM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for VSSAF5103HM3/H 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 VSSAF5103HM3/H reliable?
The price and inventory of VSSAF5103HM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSSAF5103HM3/H is usually 5 days.
3.What payment methods are accepted for VSSAF5103HM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSSAF5103HM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSSAF5103HM3/H?
VSSAF5103HM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSSAF5103HM3/H 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 VSSAF5103HM3/H?
For technical support, including VSSAF5103HM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSSAF5103HM3/H requirements.
6.How does Aetrix verify that VSSAF5103HM3/H is sourced from the original manufacturer or authorized distributors?
All VSSAF5103HM3/H 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 VSSAF5103HM3/H meets industry standards.
7.What is the process for return or replacement of VSSAF5103HM3/H?
All VSSAF5103HM3/H units undergo pre-shipment inspection (PSI). If there is an issue with VSSAF5103HM3/H, 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 VSSAF5103HM3/H part is unused and in its original packaging.
Return procedure for VSSAF5103HM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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