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Vishay General Semiconductor - Diodes Division SMBG64A-E3/5B
- Part No.:
- SMBG64A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG64A-E3/5B.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG64A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBG64A-E3/5B datasheet, SMBG64A-E3/5B pinout, SMBG64A-E3/5B application, or SMBG64A-E3/5B equivalent, key selection criteria include clamping performance under 5.8 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification for automotive use, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, activating when reverse voltage exceeds VBR to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at 64 V) and fast response time (<1.0 ns), while low incremental surge resistance supports effective energy absorption during 10/1000 μs transients.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for under-hood automotive electronics and industrial control systems requiring high-reliability surge suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse working voltage before clamping begins; sets safe operating margin for 48 V DC systems. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above system nominal voltage. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage during 600 W transient; limits stress on protected ICs or MOSFETs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; supports repetitive surges at 0.01% duty cycle. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against inrush or load dump. |
| Junction Temp | -55 °C to +150 °C - Full automotive-grade operating range; enables deployment in engine control units and battery management systems. |
| Package | SMBG (DO-215AA) - Surface-mount gull-wing package with 0.235" × 0.255" footprint; optimized for automated placement and thermal dissipation. |
Pinout & Package
SMBG64A-E3/5B uses the SMBG (DO-215AA) surface-mount package with two terminals: anode and cathode. The cathode is marked by a visible band on the body. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VRM exceeded. |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes shunt conduction loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 4 transients without degradation. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA) across temperature and lifetime. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak, compatible with standard lead-free assembly processes. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during clamping-critical for protecting 75 V-rated MOSFETs and gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load dump transients (up to 60 V) on 48 V boardnet power supplies in electric power steering modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground, clamping within nanoseconds. Use Value: Limits voltage excursion to ≤103 V during 5.8 A surge, preventing damage to 75 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Shields analog output lines of pressure sensors in hydraulic control valves from ESD and switching noise. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) unidirectional clamp on 0–5 V sensor outputs. Use Value: Maintains signal integrity with <1.0 μA leakage at 64 V, avoiding offset drift in precision 16-bit ADC front-ends. |
| Telecom DC Feeder Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Protects PoE+ (IEEE 802.3at) midspan injectors from lightning-induced surges on 57 V DC feed lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input side of active DC-DC converter stage. Use Value: Absorbs 600 W pulses without thermal runaway, validated via 1000-cycle life testing at 0.01% duty cycle. |
Use Scenario: Guards high-side N-channel MOSFET gates in BLDC motor inverters against Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS from gate to source, referenced to local driver ground. Use Value: Clamps gate-source voltage to <103 V during dV/dt events, preventing unintended turn-on and shoot-through failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/5B | Same VWM (64 V) and VC (103 V), but lower PPPM = 600 W vs. SMBG64A-E3/5B's 600 W; identical SMB package but different internal chip design. | SMBJ series has higher RθJA (110 °C/W vs. 100 °C/W), limiting sustained surge capability in thermally constrained layouts. | Select SMBG64A-E3/5B when PCB layout allows 5.0 mm × 5.0 mm pads and AEC-Q101 compliance is mandatory. |
| 1.5SMC64A | Same electrical specs (VWM = 64 V, VC = 103 V, PPPM = 600 W), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm vs. SMBG's 6.48 mm × 5.97 mm). | SMC footprint requires more board area and may not fit space-constrained automotive modules; no AEC-Q101 qualification. | Choose 1.5SMC64A only if legacy SMC land pattern exists and automotive qualification is not required. |
Compared with SMBJ64A-E3/5B and 1.5SMC64A, SMBG64A-E3/5B delivers identical clamping performance in a smaller, AEC-Q101-qualified package with superior thermal resistance-making it optimal for next-generation automotive and industrial SMT designs where space, reliability, and thermal margin are critical.
Availability
SMBG64A-E3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder surge suppression requiring stable component supply and full traceability.
Supply support for SMBG64A-E3/5B 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, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMBG series was engineered specifically for high-power, space-constrained transient suppression in automotive and industrial environments-balancing low profile, AEC-Q101 compliance, and 600 W surge capability in DO-215AA packaging.
FAQ
What is the maximum clamping voltage of SMBG64A-E3/5B under rated surge conditions?
The SMBG64A-E3/5B exhibits a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 5.8 A using the 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBG64A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBG64A-E3/5B suitable for automotive applications?
Yes, SMBG64A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its -55 °C to +150 °C junction temperature range, MSL Level 1 reflow compatibility, and validation against ISO 7637-2 transients confirm suitability for engine control units, battery management systems, and ADAS sensor power rails. The SMBG64A-E3/5B meets all stress test requirements defined in the AEC-Q101 standard.
What does the "E3/5B" suffix indicate in SMBG64A-E3/5B?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "5B" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3200 units. This format supports high-volume SMT assembly and is distinct from the "52" variant (7-inch reel, 750 units). The SMBG64A-E3/5B ordering code ensures consistent material compliance and logistics handling per Vishay's standardized delivery modes.
How does SMBG64A-E3/5B compare to bidirectional TVS diodes like SMBG64CA?
SMBG64A-E3/5B is unidirectional and features a cathode band for polarity identification, whereas SMBG64CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The SMBG64A-E3/5B offers lower leakage (<1.0 μA at 64 V) and supports forward surge current (IFSM = 100 A), making it appropriate for DC rail protection. SMBG64CA is used where AC-coupled or dual-polarity signal lines require protection without polarity constraints.
What PCB pad layout is required to achieve the rated 600 W pulse power for SMBG64A-E3/5B?
To achieve the full 600 W peak pulse power rating, SMBG64A-E3/5B must be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in Vishay document 88456. Smaller pads reduce thermal dissipation and cause derating of pulse power capability-verified in Figure 2 of the datasheet. The SMBG64A-E3/5B's thermal resistance (RθJA = 100 °C/W) assumes this pad configuration.
SMBG64A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG64A-E3/5B FAQ
1.How can I place an order for SMBG64A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG64A-E3/5B 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 SMBG64A-E3/5B reliable?
The price and inventory of SMBG64A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG64A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG64A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG64A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG64A-E3/5B?
SMBG64A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG64A-E3/5B 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 SMBG64A-E3/5B?
For technical support, including SMBG64A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG64A-E3/5B requirements.
6.How does Aetrix verify that SMBG64A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG64A-E3/5B 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 SMBG64A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG64A-E3/5B?
All SMBG64A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG64A-E3/5B, 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 SMBG64A-E3/5B part is unused and in its original packaging.
Return procedure for SMBG64A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG64A-E3/5B Tags
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