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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHE3_B/I
- Part No.:
- SMBJ7.0CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHE3_B/I.pdf
- Description:
- 600W,7.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,238
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Product details
Overview
SMBJ7.0CAHE3_B/I 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 600 W peak pulse power (10/1000 µs), 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage at 50.0 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - deployed in automotive sensor interface protection per AEC-Q101 qualification.
For engineers reviewing the SMBJ7.0CAHE3_B/I datasheet, SMBJ7.0CAHE3_B/I pinout, SMBJ7.0CAHE3_B/I application, or SMBJ7.0CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.71), AEC-Q101 qualification status, RoHS-compliant HE3 suffix, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device functions as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional behavior due to its CA suffix configuration. Its 7.0 V stand-off voltage ensures reliable blocking below transient thresholds, while 12.0 V clamping at 50.0 A IPPM limits downstream voltage stress during ESD or inductive switching events.
The SMBJ7.0CAHE3_B/I exhibits 0.065 %/°C temperature coefficient of breakdown voltage and 100 °C/W junction-to-ambient thermal resistance. It meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and delivers <1 ns response time - critical for protecting high-speed analog and digital interfaces against fast-rising transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - guaranteed avalanche breakdown range under standardized test conditions |
| VC @ IPPM | 12.0 V at 50.0 A - clamped voltage during 10/1000 µs surge, defining worst-case downstream voltage exposure |
| PPPM | 600 W - peak transient energy absorption capacity with 0.01 % duty cycle, enabling robust surge handling |
| TJ max | +150 °C - maximum junction temperature rating, supporting operation in under-hood automotive environments |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard SMT reflow profiles up to 260 °C peak |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity 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 | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to protected line without directional biasing |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or reference rail during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when mounted on 5.0 mm × 5.0 mm copper pads |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and infotainment interfaces |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage stress on downstream ICs compared to alternatives with higher ratios (>1.8) |
| MSL Level 1 packaging | Eliminates bake-out requirements and enables direct placement into high-volume SMT lines |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs from load dump and ISO 7637-2 pulses in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between transceiver pins and connector interface. Use Value: Limits transient voltage to ≤12.0 V during 50 A surges, preserving transceiver integrity without adding series impedance. |
Use Scenario: Safeguarding CAN FD data lines in factory automation PLCs exposed to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transients directly at connector entry point. Use Value: Sub-1 ns response prevents bit errors; 7.0 V VWM avoids false triggering during normal 5 V CAN recessive states. |
| Consumer USB Port ESD Protection | Telecom Power Supply Input |
Use Scenario: Shielding USB 2.0 D+/D− lines in smart home hubs against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Bidirectional clamping device placed inline with differential pair routing. Use Value: 12.0 V VC ensures microcontroller I/O remains within absolute maximum ratings during ESD discharge. |
Use Scenario: Front-end surge suppression on 12 V DC input rails of VoIP gateways subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element parallel to bulk capacitor, upstream of DC/DC converter. Use Value: 600 W PPPM handles 10/1000 µs surges up to 400 V without degradation, maintaining system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA-E3/52 | Commercial-grade (non-AEC-Q101), same electrical specs, 7″ tape-and-reel (750 pcs) | Lacks automotive qualification; suitable for industrial/commercial designs without automotive compliance needs | Select when AEC-Q101 is not required and lower cost or shorter lead time is prioritized |
| SMCJ7.0CAHE3_A/H | Same AEC-Q101 qualification but in larger SMC (DO-214AB) package; 1500 W PPPM rating | Higher power handling requires larger PCB footprint; used where surge threat exceeds 600 W | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package |
Compared with SMBJ7.0CA-E3/52, the SMBJ7.0CAHE3_B/I adds AEC-Q101 validation and 13″ reel packaging; versus SMCJ7.0CAHE3_A/H, it trades 900 W extra pulse power for 40 % smaller PCB area and tighter layout flexibility in space-constrained automotive modules.
Availability
SMBJ7.0CAHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial communication interfaces, and consumer port protection requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ7.0CAHE3_B/I 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 and application-specific performance.
The SMBJ series targets high-reliability transient suppression in automotive, industrial, and telecom systems, with design focus on low clamping voltage, fast response, and robust surge endurance in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in SMBJ7.0CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration, meaning the SMBJ7.0CAHE3_B/I provides symmetrical clamping for both positive and negative transients without polarity sensitivity. This eliminates the need for orientation during placement and enables protection of AC-coupled or floating signal paths - unlike unidirectional variants (e.g., SMBJ7.0A) that require cathode alignment toward the protected circuit's ground reference.
Is SMBJ7.0CAHE3_B/I qualified for automotive use?
Yes, SMBJ7.0CAHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" suffix) and documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification - making it suitable for deployment in engine control units, ADAS camera modules, and body electronics where automotive-grade reliability is mandatory.
What is the maximum clamping voltage of SMBJ7.0CAHE3_B/I and how is it measured?
The SMBJ7.0CAHE3_B/I has a maximum clamping voltage (VC) of 12.0 V, measured at 50.0 A peak pulse current using a 10/1000 µs waveform per IEC 61000-4-5. This value represents the worst-case voltage seen by downstream components during surge events and is verified under standardized test conditions with the device mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per Vishay specification document 88392.
How does SMBJ7.0CAHE3_B/I differ from SMBJ7.0AHE3_B/I?
SMBJ7.0CAHE3_B/I is bidirectional with symmetrical clamping, while SMBJ7.0AHE3_B/I is unidirectional and requires correct cathode orientation. The "CA" version supports AC signal lines and floating buses; the "A" version offers slightly lower leakage (<1 µA vs. <5 µA at VWM) and forward voltage drop (VF ≤ 3.5 V at 50 A), but only clamps in one direction - limiting its use to DC-biased circuits with defined ground reference.
What PCB pad layout is recommended for optimal thermal and surge performance of SMBJ7.0CAHE3_B/I?
Vishay specifies mounting SMBJ7.0CAHE3_B/I on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W peak pulse power and 100 °C/W thermal resistance. Smaller pads reduce surge capability and increase junction temperature; thermal vias under pads improve heat dissipation in high-duty-cycle applications. The DO-214AA outline drawing (document 88392, page 5) defines exact pad dimensions and spacing.
SMBJ7.0CAHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7.0CAHE3_B/I FAQ
1.How can I place an order for SMBJ7.0CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHE3_B/I 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 SMBJ7.0CAHE3_B/I reliable?
The price and inventory of SMBJ7.0CAHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHE3_B/I?
SMBJ7.0CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHE3_B/I 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 SMBJ7.0CAHE3_B/I?
For technical support, including SMBJ7.0CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHE3_B/I requirements.
6.How does Aetrix verify that SMBJ7.0CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHE3_B/I 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 SMBJ7.0CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHE3_B/I?
All SMBJ7.0CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHE3_B/I, 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 SMBJ7.0CAHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHE3_B/I Tags
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