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Vishay VSSAF5M63-M3/I
- Part No.:
- VSSAF5M63-M3/I
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
VSSAF5M63-M3/I.pdf
- Description:
- 5A, 60V SLIMSMA TRENCH SKY RECT.
- Quantity:
- Payment:
- Shipping:
Inventory:8,916
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Product details
Overview
VSSAF5M63-M3/I from Vishay General Semiconductor is a surface-mount Trench MOS Barrier Schottky (TMBS®) rectifier in SlimSMA (DO-221AC) package, rated for 60 V repetitive peak reverse voltage, 5.0 A average forward current at 30 mm × 30 mm copper pad, and 0.54 V forward voltage at 5.0 A and 125 °C - optimized for high-frequency DC/DC converters and automotive polarity protection.
For engineers reviewing the VSSAF5M63-M3/I datasheet, VSSAF5M63-M3/I pinout, VSSAF5M63-M3/I application, or VSSAF5M63-M3/I equivalent, key selection factors include its 175 °C max junction temperature, 115 °C/W junction-to-ambient thermal resistance, AEC-Q101 qualification (via HM3 variant), low-profile 0.95 mm height, and MSL Level 1 reflow compatibility.
Technical Context
This TMBS® rectifier uses trench MOS Schottky technology to achieve lower forward voltage and higher efficiency than planar Schottky diodes. Its single-anode/cathode configuration supports unidirectional freewheeling and reverse-polarity protection without external control logic.
The SlimSMA (DO-221AC) package enables automated placement and meets UL 94 V-0 flammability rating. Matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards, and M3 suffix indicates halogen-free, RoHS-compliant construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - blocks up to 60 V reverse voltage without breakdown in DC/DC converter output stages |
| IF(AV) | 5.0 A at 30 mm × 30 mm pad - sustained forward current capability under thermally optimized PCB layout |
| VF @ 5.0 A, 125 °C | 0.54 V - reduces conduction loss and improves system efficiency at elevated operating temperatures |
| IFSM | 100 A - withstands short-duration surge currents during startup or fault conditions |
| TJ max. | 175 °C - enables operation in under-hood automotive environments and high-power-density industrial designs |
| RθJA | 115 °C/W - defines thermal derating slope when mounted on standard FR4 with recommended copper area |
| CJ | 700 pF @ 4.0 V, 1 MHz - limits high-frequency switching noise and EMI in >100 kHz converter topologies |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, single-diode configuration with cathode marked by color band. Dimensions: 5.52 mm × 4.35 mm × 0.95 mm (L × W × H), 2.70 mm anode-to-cathode distance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/high-side rail in buck/flyback freewheeling paths; requires thermal pad connection for heat dissipation |
| Cathode | Forward current exit point / polarity reference | Marked with color band; ties to ground or return path; mount temperature measured here per datasheet curves |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm typical height) | Enables ultra-thin power modules and space-constrained automotive ECUs without compromising thermal performance |
| Trench MOS Schottky technology | Delivers lower VF and higher IF(AV) vs. planar Schottky diodes of same footprint, reducing conduction losses by ≥15 % |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified variant available (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
| Halogen-free, RoHS-compliant construction | Meets global environmental compliance mandates without sacrificing thermal or electrical performance |
Applications
| Automotive Polarity Protection | High-Frequency DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Reverse-battery connection protection in 12 V/48 V vehicle subsystems such as ADAS cameras and body control modules. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed between battery input and downstream regulator ICs. Use Value: Prevents damage from -14 V transients using only 0.54 V forward drop at full load, minimizing voltage headroom loss. | Use Scenario: Secondary-side rectification in 300–500 kHz isolated flyback or forward converters for industrial PLC power supplies. IC Role / Device Role / Timing Role: High-efficiency synchronous replacement for Schottky diodes in fixed-frequency PWM topologies. Use Value: 700 pF junction capacitance and 100 A surge rating support clean turn-off and robust transient immunity at high switching frequencies. |
| Freewheeling Diode in Motor Drives | Commercial Inverter Auxiliary Power Supply |
Use Scenario: Inductive kickback clamping in 24 V BLDC motor gate driver auxiliary rails. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path for inductive energy dissipation during PWM dead-time intervals. Use Value: 175 °C junction rating allows continuous operation near heatsink surfaces in compact motor control enclosures. | Use Scenario: Input rectification in 50–100 W AC/DC auxiliary supplies for telecom base station fans and sensors. IC Role / Device Role / Timing Role: Bridgeless or single-diode front-end rectifier handling 5 A average current with minimal thermal rise. Use Value: 115 °C/W RθJA enables thermal management on 2 oz. copper without dedicated heatsinks in cost-sensitive commercial designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSSAF5M63HM3/I | AEC-Q101 qualified; identical electrical specs and SlimSMA package; HM3 suffix denotes automotive qualification | Required for automotive production programs needing PPAP documentation and stress-test validation | Select VSSAF5M63HM3/I when AEC-Q101 compliance is mandatory; otherwise VSSAF5M63-M3/I suffices for commercial/industrial use |
| SS5P6-M3/84A | Same 60 V VRRM, 5 A IF(AV), DO-221AC package, but planar Schottky; VF = 0.72 V @ 5 A, 25 °C - higher conduction loss | Suitable where thermal margin exists and cost is prioritized over efficiency | Choose SS5P6-M3/84A only if 0.18 V higher VF is acceptable; VSSAF5M63-M3/I delivers measurable efficiency gain in thermally constrained layouts |
Compared with VSSAF5M63HM3/I, the VSSAF5M63-M3/I offers identical performance without automotive qualification overhead; versus SS5P6-M3/84A, it provides 0.18 V lower forward voltage at 5 A - directly reducing power loss by ~0.9 W and enabling smaller thermal pads in space-limited 5–10 W DC/DC designs.
Availability
VSSAF5M63-M3/I is available at Aetrix Electronics and suitable for high-frequency inverters, DC/DC converters, and automotive polarity protection requiring stable component supply across production lifecycles.
Supply support for VSSAF5M63-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 power efficiency and reliability.
The VSSAF5M63-M3/I belongs to Vishay's TMBS® (Trench MOS Barrier Schottky) rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive, industrial, and computing applications.
FAQ
What is the maximum junction temperature rating for the VSSAF5M63-M3/I?
The VSSAF5M63-M3/I has a maximum junction temperature (TJ) of +175 °C, verified per datasheet revision 07-Jun-2021. This rating allows reliable operation in under-hood automotive environments and high-power-density industrial power supplies where ambient temperatures exceed 105 °C. The VSSAF5M63-M3/I maintains specified electrical characteristics up to this limit when thermal design adheres to the recommended 30 mm × 30 mm copper pad area.
Is the VSSAF5M63-M3/I AEC-Q101 qualified?
No, the VSSAF5M63-M3/I is not AEC-Q101 qualified. It is the commercial/industrial variant. The AEC-Q101 qualified version is designated VSSAF5M63HM3/I (with HM3 suffix). Both share identical electrical specifications and SlimSMA packaging, but only the HM3 variant undergoes the full AEC-Q101 stress test suite including temperature cycling, HTRB, and ESD testing required for automotive production.
What does the "M3" suffix indicate in VSSAF5M63-M3/I?
The "M3" suffix in VSSAF5M63-M3/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability standards. It also confirms compliance with JESD 201 class 2 whisker testing. The "I" denotes 13-inch tape-and-reel packaging with 14,000 units per reel - distinct from the "H" code (7-inch reel, 3,500 units).
What is the thermal resistance junction-to-ambient (RθJA) for the VSSAF5M63-M3/I?
The VSSAF5M63-M3/I has a typical RθJA of 115 °C/W when mounted on a 30 mm × 30 mm copper pad area on FR4 PCB, per datasheet note (3). This value assumes 2 oz. copper thickness and free-air convection. For thermal design, the heat generated must remain below dPD/dTJ < 1/RθJA to avoid thermal runaway - a critical constraint in sealed enclosures or stacked board assemblies.
How does the VSSAF5M63-M3/I differ from planar Schottky rectifiers like SS5P6-M3/84A?
The VSSAF5M63-M3/I uses trench MOS Schottky technology, achieving 0.54 V forward voltage at 5.0 A and 125 °C versus 0.72 V for the planar SS5P6-M3/84A at 5.0 A and 25 °C. This 0.18 V reduction lowers conduction loss by ~0.9 W at full load, improving efficiency and easing thermal management. Both use DO-221AC packages, but only VSSAF5M63-M3/I supports 175 °C operation and MSL Level 1 reflow.
VSSAF5M63-M3/I 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):
- 60 V
- Current - Average Rectified (Io):
- 2.6A
- Voltage - Forward (Vf) (Max) @ If:
- 660 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 60 V
- Capacitance @ Vr, F:
- 700pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
- Operating Temperature - Junction:
- -40°C ~ 175°C
VSSAF5M63-M3/I FAQ
1.How can I place an order for VSSAF5M63-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for VSSAF5M63-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 VSSAF5M63-M3/I reliable?
The price and inventory of VSSAF5M63-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 VSSAF5M63-M3/I is usually 5 days.
3.What payment methods are accepted for VSSAF5M63-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSSAF5M63-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSSAF5M63-M3/I?
VSSAF5M63-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSSAF5M63-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 VSSAF5M63-M3/I?
For technical support, including VSSAF5M63-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSSAF5M63-M3/I requirements.
6.How does Aetrix verify that VSSAF5M63-M3/I is sourced from the original manufacturer or authorized distributors?
All VSSAF5M63-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 VSSAF5M63-M3/I meets industry standards.
7.What is the process for return or replacement of VSSAF5M63-M3/I?
All VSSAF5M63-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with VSSAF5M63-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 VSSAF5M63-M3/I part is unused and in its original packaging.
Return procedure for VSSAF5M63-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VSSAF5M63-M3/I Tags
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