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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHE3/52
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- Part No.:
- SMBJ7.0CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHE3/52.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,169
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Product details
Overview
SMBJ7.0CAHE3/52 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), 600 W peak pulse power (10/1000 µs), and clamps to ≤12.0 V at 50.0 A peak pulse current - protecting sensitive ICs, MOSFETs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ7.0CAHE3/52 datasheet, SMBJ7.0CAHE3/52 pinout, SMBJ7.0CAHE3/52 application, or SMBJ7.0CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 12.0 V max clamping voltage at rated surge current, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This device operates as a voltage-clamping protection element across two terminals, responding to both positive and negative polarity transients without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior, while the bidirectional construction eliminates need for orientation during placement.
Rated for 150 °C maximum junction temperature and compliant with MSL Level 1 (260 °C reflow peak), SMBJ7.0CAHE3/52 supports high-reliability applications requiring robust ESD and surge immunity per IEC 61000-4-2/4-4/4-5. Its 0.065 %/°C VBR temperature coefficient ensures predictable clamping over wide operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - Verified breakdown range ensures reliable turn-on within spec under production test conditions. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamping voltage during 10/1000 µs surge; limits downstream voltage stress to protected circuitry. |
| PPPM | 600 W - Peak pulse power handling capacity; enables suppression of high-energy transients like inductive switch-off spikes. |
| IPPM | 50.0 A - Maximum non-repetitive surge current; determines survivability against defined lightning or EFT waveforms. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial environments. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables effective heat transfer to PCB copper pads without external heatsinking. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during placement. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line pair (e.g., data+/data− or supply/return). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control, ADAS, and infotainment systems. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V/24 V vehicle electrical systems and industrial motor drives without degradation. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage exposure to downstream components - critical for protecting 3.3 V or 5 V logic interfaces and analog sensors. |
| MSL Level 1 moisture sensitivity | Enables standard reflow soldering at 260 °C peak without preconditioning - simplifies manufacturing and reduces BOM handling complexity. |
| Glass passivated junction | Ensures stable, repeatable breakdown characteristics over lifetime and across temperature - improves long-term protection consistency. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs from load dump, jump-start surges, and ESD events in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly across differential bus lines or between signal and ground. Use Value: Limits transient voltage to ≤12.0 V, preventing damage to ISO 11898-compliant transceivers rated for ±40 V common-mode range. |
Use Scenario: Shielding RS-485 and CAN FD physical layer circuits from EFT bursts and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Two-terminal shunt protector mounted at connector entry point to divert surge energy before reaching PHY IC. Use Value: Maintains signal integrity by clamping <100 ns after transient onset, with minimal capacitance (<100 pF at 0 V) preserving >1 Mbps data rates. |
| Consumer Power Adapter Input Stage | Medical Equipment ESD Guarding |
|
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs against line surges per IEC 61000-4-5 Level 3 (2 kV/1 kA). IC Role / Device Role / Timing Role: Parallel-connected TVS across input bulk capacitor or bridge rectifier output. Use Value: Absorbs 600 W peak pulses without failure, enabling compliance with UL 62368-1 surge withstand requirements. |
Use Scenario: Protecting patient-monitor front-end analog inputs (ECG, SpO₂) from electrostatic discharge during clinical handling. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 7.0 V) bidirectional clamp placed at connector interface before instrumentation amplifier. Use Value: Prevents latch-up or parametric shift in precision analog stages while adding <0.5 pF parasitic capacitance - negligible impact on bandwidth. |
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 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free material compliance is mandated by OEM environmental policy. | Choose SMBJ7.0CA-M3/52 if halogen-free bill-of-materials is required; otherwise SMBJ7.0CAHE3/52 offers same performance with standard RoHS compliance. |
| SMCJ7.0CAHE3/52 | Same VWM, VC, and AEC-Q101 rating but in larger SMC (DO-214AB) package with 1500 W PPPM. | Higher surge capacity suits applications exposed to repeated or higher-energy transients (e.g., alternator load dump simulation). | Choose SMCJ7.0CAHE3/52 only when 1500 W surge rating is needed; SMBJ7.0CAHE3/52 remains optimal for space-constrained designs where 600 W suffices. |
Compared with SMBJ7.0CA-M3/52, the HE3 suffix indicates identical AEC-Q101 qualification and performance but with standard RoHS compliance instead of halogen-free; versus SMCJ7.0CAHE3/52, the SMBJ version trades surge capacity for 30 % smaller footprint - critical for dense automotive ECUs and portable medical devices.
Availability
SMBJ7.0CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interface hardening, and medical device ESD safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMBJ7.0CAHE3/52 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 application-specific optimization.
The SMBJ series was engineered for high-volume, high-reliability transient suppression in automotive, industrial, and computing systems - delivering consistent clamping performance in compact surface-mount packages with AEC-Q101 validation.
FAQ
What does the "CA" suffix indicate in SMBJ7.0CAHE3/52?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ7.0CAHE3/52 provides symmetrical clamping for both positive and negative voltage transients across its two terminals. Unlike unidirectional variants (e.g., SMBJ7.0AHE3/52), it requires no polarity alignment during PCB placement and is ideal for protecting AC-coupled or differential signal lines such as CAN, RS-485, or audio paths.
Is SMBJ7.0CAHE3/52 suitable for automotive applications?
Yes, SMBJ7.0CAHE3/52 is AEC-Q101 qualified and specifically designed for automotive use. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and validated surge endurance make it appropriate for under-hood modules, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of SMBJ7.0CAHE3/52 at rated surge current?
The maximum clamping voltage (VC) of SMBJ7.0CAHE3/52 is 12.0 V when subjected to its rated 50.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet and ensures downstream components experience limited overvoltage stress during transient events.
How does SMBJ7.0CAHE3/52 differ from unidirectional SMBJ7.0AHE3/52?
SMBJ7.0CAHE3/52 is bidirectional with symmetrical clamping behavior, while SMBJ7.0AHE3/52 is unidirectional and conducts only in reverse bias - requiring correct cathode orientation. The CA version has no polarity marking and supports protection of AC signals or differential pairs; the A version is used where polarity is fixed, such as DC power rail protection.
What PCB pad layout is recommended for SMBJ7.0CAHE3/52?
Vishay specifies a minimum 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pad per terminal for SMBJ7.0CAHE3/52 to achieve rated thermal and surge performance. This layout ensures adequate heat dissipation and current spreading during 10/1000 µs transients, supporting the device's 600 W peak pulse power rating and 20 °C/W junction-to-lead thermal resistance.
SMBJ7.0CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMBJ7.0CAHE3/52 FAQ
1.How can I place an order for SMBJ7.0CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHE3/52 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 SMBJ7.0CAHE3/52 reliable?
The price and inventory of SMBJ7.0CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHE3/52?
SMBJ7.0CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHE3/52 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 SMBJ7.0CAHE3/52?
For technical support, including SMBJ7.0CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ7.0CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHE3/52 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 SMBJ7.0CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHE3/52?
All SMBJ7.0CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHE3/52, 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 SMBJ7.0CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHE3/52 Tags
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