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Vishay General Semiconductor - Diodes Division SMBJ64CAHE3_A/H
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- Part No.:
- SMBJ64CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64CAHE3_A/H.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,199
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Product details
Overview
SMBJ64CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown range (VBR at 1 mA), 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power (10/1000 µs waveform). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the SMBJ64CAHE3_A/H datasheet, SMBJ64CAHE3_A/H pinout, SMBJ64CAHE3_A/H application, or SMBJ64CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, 103 V clamping voltage at 5.8 A, AEC-Q101 qualification status, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
The device is rated for -55 °C to +150 °C operating junction temperature, exhibits 0.105 %/°C temperature coefficient of VBR, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is not a voltage regulator or ESD-only protector - it targets high-energy lightning and inductive-switching surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Confirmed minimum/maximum breakdown range ensuring predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 103 V at IPPM = 5.8 A - Peak voltage seen by protected circuit during 600 W transient; critical for downstream component survivability |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Energy-handling capacity for standardized surge waveforms; derates above 25 °C per Fig. 2 |
| IPPM (Peak Pulse Current) | 5.8 A - Maximum non-repetitive surge current supported at VC; determines minimum series impedance required |
| TJmax | +150 °C - Maximum junction temperature enabling use in under-hood automotive environments without thermal shutdown |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, 2-terminal case with no polarity marking for bidirectional operation. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), 0.2" × 0.2" copper pad layout recommended per datasheet Fig. 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under negative transient | One side of symmetrical junction; conducts during negative excursions relative to cathode reference |
| Cathode | Current entry terminal under positive transient | Other side of symmetrical junction; conducts during positive excursions - functionally interchangeable in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in AC or floating rail protection |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when paired with appropriate series impedance |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics where long-term reliability under thermal cycling is mandatory |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-volume automated assembly at 260 °C peak |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp absorbing ±100 V transients while maintaining <64 V steady-state rail integrity. Use Value: Prevents latch-up or gate oxide damage in MCU power supply inputs and CAN transceiver VCC pins during ISO 7637-2 pulses. |
Use Scenario: 4–20 mA current loop input of PLC analog module connected to field sensors. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting induced surges from op-amp front-end and ADC reference path. Use Value: Maintains measurement accuracy by limiting transient-induced offset shift to <1 LSB during 1 kV/500 A surge events. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: -48 V DC feed to remote radio head in cellular base station. IC Role / Device Role / Timing Role: Symmetrical transient suppressor on both supply and return paths to handle differential and common-mode surges. Use Value: Enables compliance with ITU-T K.21 Basic Protection Level by clamping 10/700 µs surges to <120 V at 10 A. |
Use Scenario: H-bridge gate driver supply rail in smart washing machine motor controller. IC Role / Device Role / Timing Role: Secondary-level clamp protecting half-bridge drivers from inductive kickback during PWM commutation. Use Value: Reduces failure rate of DRV8305 gate drivers by limiting VDS overshoot to <105 V during 150 mJ flyback energy events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA-E3/52 | No AEC-Q101 qualification; commercial grade only; same VWM, VBR, VC, PPPM | Not suitable for automotive production; acceptable for industrial prototypes or cost-sensitive consumer designs | Select when AEC-Q101 is not mandated and RoHS compliance suffices |
| SMCJ64CAHE3_A/H | Larger SMC (DO-214AB) package; 1500 W PPPM; same VWM/VBR but 104 V VC at 12.3 A | Higher surge margin for systems requiring >1 kV IEC 61000-4-5 immunity; requires larger PCB footprint | Select when system-level surge testing exceeds 600 W capability or board space allows larger package |
Compared with SMBJ64CAHE3_A/H, SMBJ64CA-E3/52 lacks automotive qualification but offers identical electrical performance for non-automotive use, while SMCJ64CAHE3_A/H delivers 2.5× higher surge power in a larger footprint - choice depends on qualification requirements and PCB layout constraints.
Availability
SMBJ64CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog inputs, telecom DC power feeds, and appliance motor controllers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ64CAHE3_A/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 protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high-energy surge immunity and AEC-Q101 compliance are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SMBJ64CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: SMBJ64CAHE3_A/H provides symmetrical clamping behavior in both polarities, unlike unidirectional variants (e.g., SMBJ64AHE3_A/H) that conduct only in reverse bias. This makes SMBJ64CAHE3_A/H ideal for AC-coupled lines, floating grounds, or differential bus protection where polarity is undefined or alternating.
Is SMBJ64CAHE3_A/H suitable for IEC 61000-4-5 surge testing?
Yes - SMBJ64CAHE3_A/H supports IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line) when implemented with proper PCB layout (0.2" × 0.2" copper pads) and series impedance. Its 600 W peak pulse power and 103 V clamping voltage at 5.8 A ensure protected circuits remain within safe operating limits during standardized 10/700 µs combination wave surges.
How does the AEC-Q101 qualification impact SMBJ64CAHE3_A/H usage?
AEC-Q101 qualification confirms SMBJ64CAHE3_A/H has passed accelerated stress tests including temperature cycling, high-temperature reverse bias, and ESD - validating its suitability for automotive powertrain, chassis, and body electronics. This certification is mandatory for Tier 1 suppliers and ensures long-term reliability under thermal and vibration stress encountered in vehicle deployment.
What is the maximum allowable printed circuit board pad size for SMBJ64CAHE3_A/H?
The datasheet specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as the minimum recommended layout for thermal and surge performance. Larger pads improve heat dissipation and surge current handling but must maintain symmetry to avoid uneven current sharing. Pad dimensions exceeding 0.3" × 0.3" offer diminishing returns and may compromise routing density near SMBJ64CAHE3_A/H.
Can SMBJ64CAHE3_A/H replace SMBJ64AHE3_A/H in an existing design?
No - SMBJ64CAHE3_A/H is bidirectional while SMBJ64AHE3_A/H is unidirectional; substituting them without circuit review risks improper clamping during positive transients or forward conduction in DC-biased rails. The cathode band marking on SMBJ64AHE3_A/H enables polarity-aware placement, whereas SMBJ64CAHE3_A/H has no polarity marking and must be placed without orientation dependency.
SMBJ64CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ64CAHE3_A/H FAQ
1.How can I place an order for SMBJ64CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64CAHE3_A/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 SMBJ64CAHE3_A/H reliable?
The price and inventory of SMBJ64CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ64CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64CAHE3_A/H?
SMBJ64CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64CAHE3_A/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 SMBJ64CAHE3_A/H?
For technical support, including SMBJ64CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ64CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ64CAHE3_A/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 SMBJ64CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ64CAHE3_A/H?
All SMBJ64CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64CAHE3_A/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 SMBJ64CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ64CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64CAHE3_A/H Tags
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