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Vishay General Semiconductor - Diodes Division SSB43LHE3/5BT
- Part No.:
- SSB43LHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SSB43LHE3/5BT.pdf
- Description:
- DIODE SCHOTTKY 30V 4A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,552
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Product details
Overview
SSB43LHE3/5BT from Vishay General Semiconductor is a high-current-density surface-mount Schottky rectifier in SMB (DO-214AA) package, rated for 30 V reverse voltage, 4.0 A average forward current, and 100 A non-repetitive surge current. It delivers 0.38 V typical forward voltage at 4.0 A and 125 °C junction temperature, enabling high-efficiency DC/DC converters and freewheeling circuits in space-constrained power designs.
For engineers reviewing the SSB43LHE3/5BT datasheet, SSB43LHE3/5BT pinout, SSB43LHE3/5BT application, or SSB43LHE3/5BT equivalent, key selection criteria include its AEC-Q101 qualification status, low thermal resistance (RθJL = 23 °C/W), MSL Level 1 moisture sensitivity, and matte tin-plated solderable terminals compliant with J-STD-002 and JESD 22-B102.
Technical Context
The SSB43LHE3/5BT implements a single-die Schottky barrier structure with integrated guardring for overvoltage protection and stable reverse leakage performance up to 150 °C junction temperature. Its low forward voltage drop and high dV/dt rating (10,000 V/μs) support fast-switching topologies in automotive and industrial power supplies.
Designed for surface-mount assembly on aluminum substrates, it achieves RθJA = 70 °C/W and RθJL = 23 °C/W under defined test conditions. The device meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive peak reverse blocking capability for low-voltage DC bus applications |
| IF(AV) | 4.0 A - Continuous forward current rating at lead temperature (TL), defining PCB copper area and thermal pad design |
| IFSM | 100 A - Peak surge current handling for transient load dumps and startup inductance energy dissipation |
| VF @ 4.0 A, 125 °C | 0.38 V - Low conduction loss enabling >95% efficiency in 5–12 V output DC/DC stages |
| TJ max. | 150 °C - Extended junction temperature range supporting under-hood automotive environments |
| RθJL | 23 °C/W - Thermal resistance from junction to lead, critical for heatsinkless mounting on metal-core PCBs |
| MSL Level | Level 1 per J-STD-020 - No dry-pack or bake requirement prior to reflow, simplifying SMT line logistics |
Pinout & Package
Package: SMB (DO-214AA), low-profile surface-mount case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side of switching node; requires low-inductance trace routing |
| Cathode | Forward current exit point | Marked by color band; ties to output/load or ground return path in freewheeling configuration |
Key Features
| Feature | Design Value |
|---|---|
| Guardring protection | Enhances ruggedness against voltage transients without external snubbers in automotive load-dump scenarios |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test plan |
| Low VF at high TJ | 0.38 V at 125 °C enables stable conduction loss across full operating temperature range |
| Halogen-free option available | HM3 suffix variants meet RoHS and JEDEC JS709C halogen-free material definitions |
| High dV/dt immunity | 10,000 V/μs rating prevents false turn-on during fast-switching gate drive transitions |
Applications
| Automotive DC/DC Converters | Industrial Freewheeling Diodes |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 0.38 V VF at 125 °C reduces conduction loss by ~25% vs. standard Schottkys, improving thermal margin in sealed enclosures. | Use Scenario: Inductive load flyback protection in PLC output drivers and motor control I/O stages. IC Role / Device Role / Timing Role: Freewheeling path for relay coils, solenoids, and brushed DC motors. Use Value: 100 A IFSM safely clamps energy from 24 V/2 A inductive loads without derating or parallel devices. |
| USB-C Power Delivery Rectification | Polarity Protection Circuits |
Use Scenario: Secondary-side rectification in compact 20–60 W USB PD adapters with GaN primary switches. IC Role / Device Role / Timing Role: High-frequency output rectifier operating at 200–500 kHz switching frequencies. Use Value: Low junction capacitance and fast recovery enable minimal switching loss contribution in high-frequency operation. | Use Scenario: Reverse-polarity input protection for 5–24 V embedded systems powered from external wall adapters or batteries. IC Role / Device Role / Timing Role: Series-blocking diode in supply rail before LDO or DC/DC controller. Use Value: 30 V VRRM and 4.0 A IF(AV) support wide-input industrial rails while maintaining <0.4 V dropout at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SSB43L-E3/5BT | Commercial grade, non-AEC-Q101 qualified; identical electrical specs and SMB package | Not suitable for automotive production; acceptable for industrial prototypes and consumer power supplies | Select when AEC-Q101 compliance is not required and cost optimization is prioritized |
| ON Semiconductor SB430-TB | Same 30 V/4.0 A rating but higher VF (0.45 V typ. @ 4 A, 25 °C); SMB package, no AEC-Q101 qualification | Lower efficiency in thermally constrained layouts; limited to commercial-temperature applications | Choose only if SSB43LHE3/5BT is unavailable and thermal budget allows +0.07 V VF penalty |
Compared with SSB43L-E3/5BT, the SSB43LHE3/5BT adds AEC-Q101 qualification and extended reliability testing without sacrificing electrical performance; versus SB430-TB, it delivers lower forward voltage and validated automotive robustness-critical for under-hood and safety-critical power stages.
Availability
SSB43LHE3/5BT is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial freewheeling circuits, and USB-C power delivery systems requiring stable component supply and long-term lifecycle assurance.
Supply support for SSB43LHE3/5BT 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 SSB43LHE3/5BT belongs to Vishay's high-current-density Schottky rectifier product line, engineered specifically for automotive and industrial power conversion where low VF, high surge tolerance, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum junction temperature rating for the SSB43LHE3/5BT?
The SSB43LHE3/5BT has a maximum junction temperature (TJ) of +150 °C, verified per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial settings. Derating curves in the datasheet define safe operating current limits above 25 °C ambient, and thermal design must account for RθJL = 23 °C/W when mounted on aluminum substrates. The SSB43LHE3/5BT maintains stable VF and leakage performance across this full range.
Is the SSB43LHE3/5BT pin-compatible with other SMB-packaged Schottky rectifiers?
Yes, the SSB43LHE3/5BT uses the standard SMB (DO-214AA) footprint with anode and cathode terminals in identical physical locations to industry-standard SMB rectifiers. Its cathode band orientation and pad layout match IPC-7351 recommendations. However, electrical compatibility depends on VRRM, IF(AV), and thermal characteristics-always verify surge rating and forward voltage behavior under actual operating conditions before substitution. The SSB43LHE3/5BT shares mechanical compatibility with SSB43L-E3/5BT and SB430-TB.
Does the SSB43LHE3/5BT require special handling during reflow soldering?
No special handling is required: the SSB43LHE3/5BT is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly into standard lead-free reflow profiles peaking at 260 °C. Its matte tin-plated leads comply with J-STD-002 for solderability, and the package withstands thermal shock without delamination. No dry-packaging, baking, or humidity-controlled storage is needed-unlike MSL Level 3+ components. This simplifies manufacturing for high-volume SMT lines.
How does the guardring feature improve system reliability in the SSB43LHE3/5BT?
The integrated guardring in the SSB43LHE3/5BT enhances edge termination robustness, suppressing premature avalanche breakdown during voltage transients such as automotive load dump (ISO 7637-2 Pulse 5a). It reduces localized electric field concentration at the die periphery, allowing the device to sustain rated VRRM under dynamic overvoltage stress without degradation. This eliminates need for external TVS clamping in many 12 V/24 V systems, reducing BOM count and board space-key for compact ECU and ADAS power modules using the SSB43LHE3/5BT.
What is the significance of the "HE3" suffix in SSB43LHE3/5BT?
"HE3" denotes Vishay's AEC-Q101-qualified, RoHS-compliant version of the SSB43L base part. The "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance and commercial-grade temperature range (−65 °C to +150 °C), and the "/5BT" specifies 13-inch tape-and-reel packaging with 3200 units per reel. This suffix differentiates it from non-automotive variants like SSB43L-E3/5BT and ensures traceability to qualified lots meeting automotive stress test requirements-including HTGB, H3TRB, and temperature cycling.
SSB43LHE3/5BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 600 µA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -65°C ~ 150°C
SSB43LHE3/5BT FAQ
1.How can I place an order for SSB43LHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for SSB43LHE3/5BT 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 SSB43LHE3/5BT reliable?
The price and inventory of SSB43LHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSB43LHE3/5BT is usually 5 days.
3.What payment methods are accepted for SSB43LHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSB43LHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SSB43LHE3/5BT?
SSB43LHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SSB43LHE3/5BT 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 SSB43LHE3/5BT?
For technical support, including SSB43LHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSB43LHE3/5BT requirements.
6.How does Aetrix verify that SSB43LHE3/5BT is sourced from the original manufacturer or authorized distributors?
All SSB43LHE3/5BT 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 SSB43LHE3/5BT meets industry standards.
7.What is the process for return or replacement of SSB43LHE3/5BT?
All SSB43LHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with SSB43LHE3/5BT, 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 SSB43LHE3/5BT part is unused and in its original packaging.
Return procedure for SSB43LHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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