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Vishay General Semiconductor - Diodes Division SMBJ6.5CAHE3_B/H
- Part No.:
- SMBJ6.5CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5CAHE3_B/H.pdf
- Description:
- 600W,6.5V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,622
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Product details
Overview
SMBJ6.5CAHE3_B/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 signal or power lines. It features 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA test current, 600 W peak pulse power (10/1000 µs), and clamps to ≤11.2 V at 53.6 A peak surge current - used in automotive sensor protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the SMBJ6.5CAHE3_B/H datasheet, SMBJ6.5CAHE3_B/H pinout, SMBJ6.5CAHE3_B/H application, or SMBJ6.5CAHE3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 11.2 V maximum clamping voltage at rated IPPM, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding in <1 ps to transient overvoltages. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its glass-passivated chip junction ensures stable leakage performance across temperature.
The SMBJ6.5CAHE3_B/H is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. With TJ max = 150 °C and RθJA = 100 °C/W, it supports operation in high-reliability automotive and industrial environments when mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standard layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC signal swing margin. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - guaranteed breakdown range ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | ≤11.2 V at 53.6 A - clamping voltage under full-rated surge, directly limiting stress on downstream ICs like microcontrollers or transceivers. |
| PPPM | 600 W (10/1000 µs) - peak transient energy handling capacity; determines survivability against lightning-induced or inductive-switching spikes. |
| ID @ VWM | ≤500 µA - reverse leakage at stand-off voltage; low value minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - maximum junction temperature rating; enables use in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.20 mm lead spacing; compatible with IPC-7351B footprint and J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C peak reflow), UL 94 V-0 compliant. Bidirectional construction means no cathode/anode marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input/output node | Connects to protected line (e.g., CAN_H or RS-485 A); bidirectional conduction allows same terminal to handle positive or negative transients. |
| Terminal 2 | Transient input/output node | Connects to reference plane (GND or complementary line); forms symmetric clamping path with Terminal 1 for AC or differential signals. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS sensors, and infotainment interfaces. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance when properly laid out - eliminates need for external series impedance in many designs. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Ensures minimal overvoltage overshoot during fast transients - critical for protecting 3.3 V or 5 V logic interfaces with tight absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking - reduces manufacturing cost and avoids moisture-induced popcorning during reflow. |
| Glass-passivated junction | Provides stable VBR and low leakage over lifetime and temperature - prevents parameter drift in long-life industrial equipment or outdoor telecom units. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground, absorbing >600 W surge energy without failure. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (75 V/300 ms) and ISO 16750-2 load-dump tests while maintaining signal integrity below 11.2 V clamping threshold. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs and motor drives against ESD and inductive switching noise on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus lines and referenced to signal ground, suppressing common-mode and differential-mode transients. Use Value: Limits bus voltage excursion to ≤11.2 V during 4 kV contact ESD (IEC 61000-4-2) and 1 kV surge (IEC 61000-4-5), preventing transceiver latch-up or damage. |
| Telecom Line Interface | Consumer USB Port Protection |
|
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via outdoor cabling in residential gateways and base stations. IC Role / Device Role / Timing Role: Primary-level TVS on tip/ring or differential pair, operating in conjunction with gas discharge tubes or PTCs for staged protection. Use Value: Clamps 10/1000 µs surges to ≤11.2 V within nanoseconds, reducing secondary protection burden and enabling smaller, lower-cost secondary stages. |
Use Scenario: Guarding USB 2.0 data lines (D+/D−) and VBUS against ESD events during hot-plug insertion in smartphones, tablets, and peripherals. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed immediately at connector, shunting ESD current away from USB controller pins. Use Value: Achieves >15 kV air/8 kV contact ESD immunity (IEC 61000-4-2) with <0.5 pF typical junction capacitance - preserves signal rise time and eye diagram integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC/PPPM specs, identical SMB package and pinout. | Lacks automotive qualification; not recommended for under-hood or safety-critical modules. | Select when cost-sensitive industrial or consumer designs do not require automotive reliability validation. |
| SMAJ6.5CAHE3_A/H | Same AEC-Q101 qualification but in smaller SMA (DO-214AC) package; lower PPPM = 400 W; VC = 11.5 V @ 35.2 A. | Reduced surge handling limits use to lower-energy interfaces (e.g., I²C, UART) or secondary-stage protection. | Choose where board space is constrained and peak surge exposure is below 400 W - verify layout thermal relief for sustained dissipation. |
Compared with SMBJ6.5CAHE3_B/H, the SMBJ6.5CA-E3/52 offers identical electrical performance at lower cost but no automotive qualification, while the SMAJ6.5CAHE3_A/H trades 33% lower surge rating and smaller footprint for space-constrained non-primary protection roles.
Availability
SMBJ6.5CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and long-term lifecycle support.
Supply support for SMBJ6.5CAHE3_B/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, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in automotive, industrial, and communications systems, with design focus on robust clamping, low leakage, and seamless integration into automated SMT production flows.
FAQ
What is the clamping voltage of SMBJ6.5CAHE3_B/H at its rated peak pulse current?
The SMBJ6.5CAHE3_B/H clamps to a maximum of 11.2 V at its rated peak pulse current of 53.6 A (10/1000 µs waveform). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and guarantees worst-case overvoltage stress on protected circuitry. The SMBJ6.5CAHE3_B/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) when mounted per recommended pad layout.
Is SMBJ6.5CAHE3_B/H suitable for automotive applications?
Yes, SMBJ6.5CAHE3_B/H is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, body electronics, ADAS sensors, and infotainment systems. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction. Its 150 °C junction rating, robust surge capability, and validated reliability testing ensure compliance with automotive environmental and lifetime requirements.
How does the bidirectional configuration of SMBJ6.5CAHE3_B/H affect its circuit implementation?
The bidirectional configuration of SMBJ6.5CAHE3_B/H allows it to protect AC-coupled, differential, or floating signal lines without regard to polarity - such as RS-485 A/B pairs or Ethernet MDI lines. Unlike unidirectional TVS diodes, SMBJ6.5CAHE3_B/H has no cathode marking and conducts symmetrically in both directions, simplifying layout and eliminating orientation errors during automated placement.
What is the maximum reverse leakage current for SMBJ6.5CAHE3_B/H at its stand-off voltage?
The SMBJ6.5CAHE3_B/H exhibits a maximum reverse leakage current (ID) of 500 µA at its 6.5 V stand-off voltage (VWM), tested at 25 °C. This low leakage ensures minimal impact on high-impedance sensor inputs or battery-powered circuits. Leakage remains within specification up to +125 °C, supporting reliable operation in thermally demanding environments without significant power penalty.
Does SMBJ6.5CAHE3_B/H require special PCB layout considerations?
Yes - optimal performance of SMBJ6.5CAHE3_B/H requires mounting on minimum recommended copper pad areas (0.2" × 0.2" / 5.0 mm × 5.0 mm per terminal) to achieve specified thermal resistance (RθJL = 20 °C/W) and surge rating. Short, wide traces to ground or reference planes minimize inductance and preserve clamping speed. Avoid thermal reliefs on TVS pads, and maintain clearance from adjacent components to prevent arcing during high-energy transients.
SMBJ6.5CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 53.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ6.5CAHE3_B/H FAQ
1.How can I place an order for SMBJ6.5CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5CAHE3_B/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 SMBJ6.5CAHE3_B/H reliable?
The price and inventory of SMBJ6.5CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ6.5CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5CAHE3_B/H?
SMBJ6.5CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5CAHE3_B/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 SMBJ6.5CAHE3_B/H?
For technical support, including SMBJ6.5CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ6.5CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5CAHE3_B/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 SMBJ6.5CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ6.5CAHE3_B/H?
All SMBJ6.5CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5CAHE3_B/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 SMBJ6.5CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ6.5CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5CAHE3_B/H Tags
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