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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHE3_A/I
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- Part No.:
- SMBJ5.0CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHE3_A/I.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,826
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Product details
Overview
SMBJ5.0CAHE3_A/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 a 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR), 600 W peak pulse power (10/1000 µs), and clamps to ≤9.2 V at 65.2 A IPPM - deployed in sensor interface protection and automotive ECUs.
For engineers reviewing the SMBJ5.0CAHE3_A/I datasheet, SMBJ5.0CAHE3_A/I pinout, SMBJ5.0CAHE3_A/I application, or SMBJ5.0CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping voltage under surge, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance and low leakage (ID ≤ 800 µA at VWM), while the low incremental surge resistance supports fast energy dissipation during ESD or lightning-induced surges.
The SMBJ5.0CAHE3_A/I is rated for TJ = –55 °C to +150 °C operation and meets MSL Level 1 per J-STD-020 (peak reflow 260 °C). Its 600 W peak pulse power rating applies specifically to the 10/1000 µs waveform with 0.01% duty cycle, and derating begins above TA = 25 °C per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before clamping initiates; defines safe signal line bias margin. |
| VBR min/max | 6.4 V / 7.25 V at IT = 10 mA - guaranteed breakdown onset window; ensures predictable clamping threshold across temperature and lot. |
| VC @ IPPM | ≤9.2 V at 65.2 A - clamped voltage during 600 W transient; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W (10/1000 µs) - peak transient energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surge events. |
| ID @ VWM | ≤800 µA - reverse leakage at stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; informs board-level thermal design for sustained surge duty. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TCT, and ESD testing; enables use in engine control, ADAS, and infotainment modules. |
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 compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; forms symmetrical conduction path with cathode. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; enables bidirectional clamping without external polarity management. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, RS-485, sensor bridges) without polarity concerns. |
| 600 W peak pulse power | Supports robust immunity against IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) when properly laid out. |
| AEC-Q101 qualification | Validates long-term reliability in automotive environments including thermal cycling, humidity, and mechanical shock per ISO 16750. |
| Low clamping voltage (VC ≤ 9.2 V) | Protects 5 V logic interfaces (e.g., microcontroller GPIO, ADC inputs) by limiting transient overvoltage below absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements and simplifying SMT manufacturing. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and MCU input, shunting transients before they reach the ADC front-end. Use Value: Prevents latch-up or damage to 5 V-tolerant SAR ADCs by limiting excursion to ≤9.2 V during 100 V/100 ms load dump events. |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., SN65HVD230) from EFT bursts and surge coupling on factory-floor cabling. IC Role / Device Role / Timing Role: Line-side TVS mounted differential across A/B bus lines, referenced to ground via low-inductance layout. Use Value: Maintains signal integrity under IEC 61000-4-4 Level 4 (4 kV EFT) by clamping common-mode spikes before transceiver input thresholds are exceeded. |
| Consumer USB Port ESD | Power Supply Input Stage |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D– lines in portable audio devices where primary protection resides upstream. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp absorbing ±15 kV contact discharge per IEC 61000-4-2, placed adjacent to connector. Use Value: Limits induced voltage on data lines to <10 V, preventing gate oxide damage to USB PHY transceivers with 3.3 V I/O rails. |
Use Scenario: Input rail protection for 5 V DC-DC converters powering FPGA I/O banks in industrial controllers. IC Role / Device Role / Timing Role: Parallel-connected TVS across VIN and GND, triggered only during overvoltage faults exceeding 5.0 V stand-off. Use Value: Diverts >60 A surge current away from converter IC, avoiding input overvoltage shutdown and enabling graceful fault recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC/PPPM, identical SMB package and pinout. | Lacks automotive qualification; suitable for consumer/industrial designs not requiring AEC validation. | Select when cost sensitivity outweighs automotive reliability requirements and full lifecycle traceability is not mandated. |
| SMCJ5.0CAHE3_A/I | Same AEC-Q101 qualification and electrical specs, but in larger SMC (DO-214AB) package with higher RθJA (60 °C/W) and 1500 W PPPM. | Offers higher surge margin and better thermal performance; requires larger PCB footprint and different pad layout. | Choose when system-level surge testing exceeds 600 W or board layout allows SMC footprint for enhanced ruggedness. |
Compared with SMBJ5.0CAHE3_A/I, the SMBJ5.0CA-E3/52 reduces cost and qualification overhead for non-automotive use, while the SMCJ5.0CAHE3_A/I trades board space for superior thermal handling and surge headroom - making each alternative optimal under distinct reliability, layout, and compliance constraints.
Availability
SMBJ5.0CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, consumer USB protection, and DC-DC input stage hardening requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ5.0CAHE3_A/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 high-reliability, high-efficiency, and automotive-grade solutions.
The SMBJ series is engineered for robust transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and communications systems needing certified, repeatable clamping performance.
FAQ
What does the "CA" suffix indicate in SMBJ5.0CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration: SMBJ5.0CAHE3_A/I conducts and clamps symmetrically for both positive and negative transients, unlike unidirectional variants (e.g., SMBJ5.0AHE3_A/I) that require correct polarity orientation. This makes SMBJ5.0CAHE3_A/I ideal for AC-coupled or floating signal paths where voltage polarity reversal is possible, such as RS-485 buses or bridge sensor outputs.
Is SMBJ5.0CAHE3_A/I compatible with lead-free reflow processes?
Yes, SMBJ5.0CAHE3_A/I is RoHS-compliant and qualified for lead-free reflow with a maximum peak temperature of 260 °C (MSL Level 1 per J-STD-020). Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device withstands standard IPC/JEDEC profiles without degradation - confirmed by Vishay's qualification testing and documented in the 88392 datasheet revision 09-Jan-2024.
How does the clamping voltage VC of SMBJ5.0CAHE3_A/I compare to its stand-off voltage VWM?
SMBJ5.0CAHE3_A/I has a VWM of 5.0 V and a maximum clamping voltage VC of 9.2 V at 65.2 A IPPM. This 4.2 V differential represents the worst-case voltage overshoot seen by protected circuitry during a full 600 W transient. The ratio VC/VWM ≈ 1.84 reflects efficient avalanche response - lower than many competing TVS diodes - ensuring tighter protection margins for 5 V logic interfaces without requiring additional series impedance.
Can SMBJ5.0CAHE3_A/I be used in place of a unidirectional TVS like SMBJ5.0AHE3_A/I?
No - SMBJ5.0CAHE3_A/I is electrically and physically distinct from unidirectional variants. While both share the same VWM and package, SMBJ5.0CAHE3_A/I lacks polarity marking and conducts in both directions, whereas SMBJ5.0AHE3_A/I has a cathode band and blocks reverse current until breakdown. Substituting SMBJ5.0CAHE3_A/I for a unidirectional part may cause unintended conduction in DC-biased circuits, risking malfunction or increased leakage.
What is the significance of the "HE3" and "_A/I" suffixes in SMBJ5.0CAHE3_A/I?
"HE3" indicates RoHS-compliant construction with AEC-Q101 qualification; "_A/I" specifies packaging: "I" denotes 13-inch tape-and-reel (3200 units/reel), while "A" is the revision code per Vishay's ordering nomenclature. Together, SMBJ5.0CAHE3_A/I identifies an automotive-grade, bidirectional TVS supplied in high-volume reel format - traceable to Vishay's qualified production lot and fully documented in datasheet 88392.
SMBJ5.0CAHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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)
SMBJ5.0CAHE3_A/I FAQ
1.How can I place an order for SMBJ5.0CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHE3_A/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 SMBJ5.0CAHE3_A/I reliable?
The price and inventory of SMBJ5.0CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHE3_A/I?
SMBJ5.0CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHE3_A/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 SMBJ5.0CAHE3_A/I?
For technical support, including SMBJ5.0CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHE3_A/I requirements.
6.How does Aetrix verify that SMBJ5.0CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHE3_A/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 SMBJ5.0CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHE3_A/I?
All SMBJ5.0CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHE3_A/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 SMBJ5.0CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHE3_A/I Tags
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