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Vishay VSSAF3M103HM3/H
- Part No.:
- VSSAF3M103HM3/H
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
VSSAF3M103HM3/H.pdf
- Description:
- 3A, 100V, SLIM SMA TRENCH SKY RE
- Quantity:
- Payment:
- Shipping:
Inventory:2,374
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Product details
Overview
VSSAF3M103HM3/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 and 3 A average forward current at 175 °C junction temperature, with 0.54 V forward voltage at 3 A and 125 °C - used for polarity protection and freewheeling in automotive DC/DC converters.
For engineers reviewing the VSSAF3M103HM3/H datasheet, VSSAF3M103HM3/H pinout, VSSAF3M103HM3/H application, or VSSAF3M103HM3/H equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low profile (0.95 mm height), MSL Level 1 rating, 80 A surge capability, and thermal resistance of 115 °C/W (junction-to-ambient) on standard PCB pad.
Technical Context
This device implements trench MOS Schottky technology to achieve low forward voltage drop and high switching efficiency, eliminating minority-carrier storage delay typical of PN junction rectifiers. Its single-anode/cathode configuration supports unidirectional conduction in high-frequency power conversion stages.
The SlimSMA (DO-221AC) package enables automated placement and meets UL 94 V-0 flammability requirements, while matte tin-plated terminals comply with J-STD-002 solderability and JESD 22-B102 whisker testing. The color band denotes cathode polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum reverse blocking voltage before breakdown; defines safe operating range in DC bus or flyback clamp circuits |
| IF(AV) | 3 A - continuous DC forward current rating at 175 °C junction temperature with recommended 30 mm × 30 mm copper pad |
| VF @ 3 A, 125 °C | 0.54 V - low conduction loss enabling >95 % efficiency in 12 V–48 V DC/DC stages at full load |
| IFSM | 80 A - peak non-repetitive surge current handling for transient overloads like motor startup or load dump |
| TJ max. | 175 °C - extended junction temperature rating supports under-hood automotive operation without derating |
| RθJA | 115 °C/W - thermal resistance from junction to ambient on standard FR4 board; determines required heatsinking for thermal design |
| CJ @ 4 V | 470 pF - low junction capacitance minimizes switching losses and EMI in >100 kHz converter topologies |
Pinout & Package
Package: SlimSMA (DO-221AC), ultra-low-profile surface-mount case with cathode band marking; dimensions: 4.35 mm × 2.70 mm × 0.95 mm (L × W × H); RoHS-compliant, halogen-free, AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to input/source side of rectification path; requires low-inductance trace routing for high-frequency stability |
| Cathode | Current exit terminal | Marked by color band; connects to output/load side; serves as reference node for thermal mounting and voltage sensing |
Key Features
| Feature | Design Value |
|---|---|
| Trench MOS Schottky architecture | Enables 0.54 V VF at 3 A/125 °C - reduces conduction loss by ~30 % vs. planar Schottky equivalents |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - eliminates baking requirement prior to assembly |
| 0.95 mm profile | Enables ultra-thin power modules and space-constrained layouts in ADAS ECUs and infotainment systems |
| Junction capacitance (470 pF) | Minimizes reverse recovery charge (Qrr ≈ 0 nC) - eliminates snubber circuits and improves light-load efficiency |
Applications
| Automotive DC/DC Converters | Industrial Freewheeling Diodes |
|---|---|
Use Scenario: Step-down conversion from 48 V battery to 12 V subsystems in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck converter secondary side. Use Value: 0.54 V VF at 125 °C reduces power loss by 1.6 W vs. legacy Schottky, lowering thermal stress in sealed enclosures. |
Use Scenario: Flyback diode across relay coils and solenoid drivers in PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path for inductive energy dissipation. Use Value: 80 A IFSM withstands 50 ms inductive turn-off spikes without degradation, ensuring long-term field reliability. |
| Commercial Polarity Protection | High-Frequency Inverters |
Use Scenario: Reverse-voltage blocking at input of USB-C PD power delivery modules. IC Role / Device Role / Timing Role: Input protection diode preventing damage from misconnected adapters. Use Value: 100 V VRRM provides 2× margin over 48 V max input, while 0.95 mm height fits within slim chassis designs. |
Use Scenario: Output stage rectification in 200 kHz resonant LLC inverters for LED drivers. IC Role / Device Role / Timing Role: High-speed unidirectional conduction with near-zero Qrr. Use Value: 470 pF CJ limits displacement current during fast dv/dt transitions, reducing EMI filter component count by 25 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS3L100U | Same 100 V VRRM and 3 A IF(AV), but TO-277A package (1.1 mm height); VF = 0.58 V @ 3 A/125 °C | Lacks AEC-Q101 qualification; not approved for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and board height constraints are relaxed |
| ON Semi SB3100 | 100 V VRRM, 3 A IF(AV), DO-214AA package; VF = 0.85 V @ 3 A/25 °C - higher conduction loss | Higher VF increases thermal load; no MSL Level 1 rating - requires moisture-sensitive handling | Acceptable for commercial-grade, non-automotive applications where footprint compatibility with DO-214AA is critical |
Compared with STPS3L100U and SB3100, VSSAF3M103HM3/H delivers lower forward voltage, AEC-Q101 qualification, and superior thermal performance in a thinner package - making it optimal for space- and reliability-critical automotive and industrial power stages.
Availability
VSSAF3M103HM3/H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial freewheeling circuits, and commercial polarity protection requiring stable component supply and AEC-Q101 compliance.
Supply support for VSSAF3M103HM3/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 high-reliability diodes, rectifiers, MOSFETs, and optoelectronics for demanding power and signal applications.
VSSAF3M103HM3/H belongs to Vishay's TMBS® (Trench MOS Barrier Schottky) product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive and industrial systems where low VF and robust thermal performance are essential.
FAQ
What is the maximum junction temperature rating for VSSAF3M103HM3/H?
The VSSAF3M103HM3/H has a maximum junction temperature (TJ max.) of +175 °C, verified per datasheet revision 27-Sep-2022. This rating allows uninterrupted operation in under-hood automotive environments and high-ambient industrial settings without derating when mounted on a 30 mm × 30 mm copper pad. The VSSAF3M103HM3/H maintains stable electrical characteristics up to this limit, supporting reliable long-term deployment in thermally aggressive applications.
Is VSSAF3M103HM3/H qualified for automotive applications?
Yes, VSSAF3M103HM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation (Document Number: 98380). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing - making VSSAF3M103HM3/H suitable for automotive powertrain, body control, and ADAS subsystems where reliability is mission-critical.
What does the "HM3" suffix indicate in VSSAF3M103HM3/H?
The "HM3" suffix in VSSAF3M103HM3/H identifies the part as halogen-free, RoHS-compliant, and AEC-Q101 qualified - distinguishing it from the base "M3" variant which lacks automotive qualification. The "H" denotes 7-inch tape-and-reel packaging (3500 units per reel), and "M3" confirms compliance with JESD201 Class 2 whisker testing and J-STD-020 MSL Level 1 handling requirements.
What is the thermal resistance (RθJA) of VSSAF3M103HM3/H under standard conditions?
VSSAF3M103HM3/H exhibits a typical junction-to-ambient thermal resistance (RθJA) of 115 °C/W when mounted on a standard FR4 PCB with a 30 mm × 30 mm copper pad area, per datasheet Figure 7. This value is measured under free-air conditions and informs thermal design margins - for example, at 3 A load and 0.54 V VF, power dissipation is ~1.62 W, resulting in ~186 °C junction rise above ambient, necessitating proper pad layout or airflow to stay within the 175 °C TJ max. limit.
Does VSSAF3M103HM3/H have a defined pinout or terminal configuration?
VSSAF3M103HM3/H is a two-terminal discrete diode in SlimSMA (DO-221AC) package: Anode and Cathode. The cathode is marked by a visible color band on the device body. No internal circuitry or multi-pin functionality exists - the VSSAF3M103HM3/H operates strictly as a unidirectional current path with polarity-dependent conduction, and its terminals must be routed accordingly in PCB layout to ensure correct forward biasing.
VSSAF3M103HM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Series:
- eSMP®
- 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):
- 2.3A
- Voltage - Forward (Vf) (Max) @ If:
- 680 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 70 V
- Capacitance @ Vr, F:
- 470pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
- Operating Temperature - Junction:
- -40°C ~ 175°C
VSSAF3M103HM3/H FAQ
1.How can I place an order for VSSAF3M103HM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for VSSAF3M103HM3/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 VSSAF3M103HM3/H reliable?
The price and inventory of VSSAF3M103HM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VSSAF3M103HM3/H is usually 5 days.
3.What payment methods are accepted for VSSAF3M103HM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VSSAF3M103HM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VSSAF3M103HM3/H?
VSSAF3M103HM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VSSAF3M103HM3/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 VSSAF3M103HM3/H?
For technical support, including VSSAF3M103HM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VSSAF3M103HM3/H requirements.
6.How does Aetrix verify that VSSAF3M103HM3/H is sourced from the original manufacturer or authorized distributors?
All VSSAF3M103HM3/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 VSSAF3M103HM3/H meets industry standards.
7.What is the process for return or replacement of VSSAF3M103HM3/H?
All VSSAF3M103HM3/H units undergo pre-shipment inspection (PSI). If there is an issue with VSSAF3M103HM3/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 VSSAF3M103HM3/H part is unused and in its original packaging.
Return procedure for VSSAF3M103HM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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