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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHE3_A/H
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- Part No.:
- SMBJ7.0CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHE3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,674
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Product details
Overview
SMBJ7.0CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤12.0 V at 50.0 A peak surge current - deployed in sensor interface protection and automotive ECUs.
For engineers reviewing the SMBJ7.0CAHE3_A/H datasheet, SMBJ7.0CAHE3_A/H pinout, SMBJ7.0CAHE3_A/H application, or SMBJ7.0CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and compliance with UL 497B and IEC 61000-4-2 Level 4 ESD standards.
Technical Context
This device operates as a voltage-clamping protector with symmetrical bidirectional avalanche behavior, enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
The SMBJ7.0CAHE3_A/H is rated for 600 W peak pulse power and exhibits a maximum clamping voltage (VC) of 12.0 V at 50.0 A IPPM, with a temperature coefficient of VBR at +0.065 %/°C - confirming predictable voltage drift over operating temperature. It meets MSL level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.0 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 6.4–7.25 V at 10 mA - Confirmed bidirectional avalanche threshold; ensures reliable triggering across manufacturing lot and temperature. |
| VC (Clamping Voltage) | ≤12.0 V at 50.0 A IPPM - Limits downstream IC voltage stress during surge events; enables robust protection of 5 V logic interfaces. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs waveform) - Sustains high-energy transients typical of ISO 7637-2 Load Dump or IEC 61000-4-5 surge tests. |
| IPPM (Peak Pulse Current) | 50.0 A - Peak surge current capability at rated clamping voltage; validates protection against 1 kV/500 Ω ring wave surges. |
| TJmax | +150 °C - Enables operation in under-hood automotive environments and industrial motor drive control modules. |
| Package | SMB (DO-214AA) - Surface-mount footprint (5.21 × 4.06 mm) compatible with automated placement and reflow; meets UL 94 V-0. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; RoHS-compliant and halogen-free (HE3 suffix denotes AEC-Q101 qualification).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking required; terminals interchangeable - enables placement without orientation check in PCB layout. |
| Case (body) | Non-electrical mechanical interface | Thermally conductive plastic body; requires 5.0 mm × 5.0 mm copper pad per terminal for rated power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates immunity to severe automotive load dump and industrial switching surges without degradation. |
| AEC-Q101 qualified (HE3 suffix) | Confirms reliability for automotive applications including engine control units, ADAS sensors, and body electronics. |
| UL 497B recognized & IEC 61000-4-2 compliant | Enables system-level ESD certification (±25 kV air, ±15 kV contact) without additional external components. |
| Low clamping ratio (VC/VBR ≈ 1.7) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V microcontrollers and CAN transceivers. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free assembly processes without pre-baking or special handling requirements. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to ISO 7637-2 pulses and alternator load dump. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground pins to shunt transients before they reach ADC inputs. Use Value: Prevents latch-up or damage to 12-bit SAR ADCs by limiting input voltage to ≤12.0 V during 100 V/50 ms load dump events. |
Use Scenario: Shielding digital input channels on programmable logic controllers from field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to absorb fast-rising transients from relay coil de-energization. Use Value: Maintains signal integrity by clamping spikes within 1 ns response time, avoiding false triggering of optocoupled isolators. |
| USB/RS-485 Interface Protection | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding differential data lines in industrial USB hubs and RS-485 transceivers against ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs (e.g., A/B lines) to equalize voltage excursion during ±8 kV contact ESD events. Use Value: Ensures uninterrupted communication by limiting common-mode voltage rise to <12.0 V, preserving receiver common-mode range. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback during PWM switching transitions. Use Value: Extends MOSFET lifespan by limiting drain-source voltage overshoot to ≤12.0 V, reducing avalanche stress during turn-off. |
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-M3/52 | Same electrical specs and SMB package; halogen-free, RoHS-compliant, but not AEC-Q101 qualified. | Restricted to commercial/industrial use only; unsuitable for automotive under-hood deployment. | Select when AEC-Q101 is not required and halogen-free compliance is mandated. |
| SMCJ7.0CAHE3_A/H | Same VWM, VBR, and VC; higher PPPM (1500 W); larger SMC (DO-214AB) package (7.11 × 6.22 mm). | Used where higher surge energy tolerance is needed (e.g., main power rail protection), but requires larger PCB area. | Choose when system-level surge testing exceeds 600 W requirements and board space permits larger footprint. |
Compared with SMBJ7.0CAHE3_A/H, the M3/52 variant offers identical protection performance without automotive qualification, while the SMCJ7.0CAHE3_A/H delivers 2.5× higher pulse power in a physically larger package - enabling trade-offs between board density, qualification scope, and surge margin.
Availability
SMBJ7.0CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer appliance motor drives requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMBJ7.0CAHE3_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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMBJ series is engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ESD, EFT, and surge is non-negotiable.
FAQ
What does the "CA" suffix indicate in SMBJ7.0CAHE3_A/H?
The "CA" suffix in SMBJ7.0CAHE3_A/H designates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ7.0A), it has no cathode marking and functions identically regardless of polarity applied across its terminals, making it ideal for AC-coupled or differential signal lines.
Is SMBJ7.0CAHE3_A/H suitable for protecting a 5 V USB interface?
Yes, SMBJ7.0CAHE3_A/H is suitable for 5 V USB interface protection: its 7.0 V stand-off voltage provides adequate margin above 5 V nominal, and its 12.0 V clamping voltage at 50 A ensures downstream USB PHY ICs remain within absolute maximum ratings during IEC 61000-4-2 ±15 kV contact discharge events. The bidirectional nature also protects against reversals in hot-plug scenarios.
How does the HE3 suffix affect SMBJ7.0CAHE3_A/H compliance and use cases?
The HE3 suffix in SMBJ7.0CAHE3_A/H indicates RoHS-compliant construction plus full AEC-Q101 qualification - validating performance across −55 °C to +150 °C, humidity resistance, mechanical shock, and lifetime reliability for automotive applications. This makes SMBJ7.0CAHE3_A/H appropriate for engine control, ADAS camera modules, and body electronics where non-automotive grades would fail qualification testing.
What is the maximum allowable PCB pad size for SMBJ7.0CAHE3_A/H to achieve rated 600 W pulse power?
To achieve the rated 600 W peak pulse power (10/1000 µs), SMBJ7.0CAHE3_A/H must be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in the Vishay datasheet. Smaller pads reduce thermal dissipation and derate pulse power - e.g., 0.1" × 0.1" pads may limit IPPM to ~35 A instead of the full 50 A rating.
Does SMBJ7.0CAHE3_A/H meet UL 497B and IEC 61000-4-5 standards out-of-the-box?
SMBJ7.0CAHE3_A/H is UL 497B recognized (file E136766) and designed to meet IEC 61000-4-5 surge immunity when applied per recommended layout - including proper grounding, trace length minimization, and decoupling. While the device itself satisfies voltage/current thresholds for Level 3 (1 kV line-earth, 2 kV line-line), full system compliance requires validation of the entire PCB implementation, not just SMBJ7.0CAHE3_A/H alone.
SMBJ7.0CAHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ7.0CAHE3_A/H FAQ
1.How can I place an order for SMBJ7.0CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHE3_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 SMBJ7.0CAHE3_A/H reliable?
The price and inventory of SMBJ7.0CAHE3_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 SMBJ7.0CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHE3_A/H?
SMBJ7.0CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHE3_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 SMBJ7.0CAHE3_A/H?
For technical support, including SMBJ7.0CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ7.0CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHE3_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 SMBJ7.0CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHE3_A/H?
All SMBJ7.0CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHE3_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 SMBJ7.0CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHE3_A/H Tags
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