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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHE3/52
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- Part No.:
- SMBJ5.0CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHE3/52.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,589
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Product details
Overview
SMBJ5.0CAHE3/52 from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 600 W peak pulse power (10/1000 µs), 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR), and clamps to ≤9.2 V at 65.2 A peak pulse current - used for protecting MOSFET gates, sensor I/O, and USB/RS-485 interfaces in industrial control systems.
For engineers reviewing the SMBJ5.0CAHE3/52 datasheet, SMBJ5.0CAHE3/52 pinout, SMBJ5.0CAHE3/52 application, or SMBJ5.0CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 100 °C/W junction-to-ambient thermal resistance, low leakage (<800 µA at VWM), 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: under normal conditions it presents high impedance (>1 MΩ), but switches to low-impedance conduction when reverse voltage exceeds VBR (6.4–7.25 V). Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while the bidirectional structure enables symmetric protection without polarity sensitivity.
Thermally, it relies on PCB copper pad area (0.2" × 0.2") for heat dissipation, with RθJA = 100 °C/W and RθJL = 20 °C/W. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification - critical for automotive infotainment and body electronics where reliability under temperature cycling and humidity is mandated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse operating voltage before clamping begins; sets upper limit for safe signal line operation. |
| VBR (min/max) | 6.4 V / 7.25 V - guaranteed breakdown range at 10 mA test current; defines turn-on threshold tolerance for surge detection. |
| VC @ IPPM | ≤9.2 V at 65.2 A - clamped voltage during 600 W 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| IPPM | 65.2 A - peak pulse current supported under standard waveform; defines surge energy handling capacity. |
| PPPM | 600 W - peak pulse power rating (10/1000 µs); establishes transient immunity level per industry standards like IEC 61000-4-5. |
| TJ max. | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| Leakage ID | <800 µA at 5.0 V - reverse leakage at VWM; ensures minimal power loss and signal integrity in battery-powered sensors. |
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, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to protected line (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to ground or reference rail during clamping; requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric protection of AC-coupled or differential lines (e.g., USB D+/D−, RS-485) without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including infotainment, ADAS sensors, and body control modules per stress test requirements. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV direct, 2 kV coupled) on 50 Ω source impedance lines. |
| Low clamping voltage (≤9.2 V) | Protects 5 V logic interfaces (e.g., microcontroller GPIO, UART) without exceeding absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing and inventory management. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensors in engine control units against load dump and ESD. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transients to chassis ground. Use Value: Maintains signal integrity during 100 V/10 ms load dump events while meeting AEC-Q101 lifetime reliability targets. |
Use Scenario: Shielding RS-485 transceivers in PLC backplanes and motor drives from induced lightning surges and ground bounce. IC Role / Device Role / Timing Role: Paired TVS on A/B lines referenced to common-mode ground, limiting differential and common-mode overvoltage simultaneously. Use Value: Clamps common-mode spikes to <9.2 V, preventing transceiver latch-up and enabling >10 kV ESD immunity per IEC 61000-4-2. |
| USB 2.0 Data Line Protection | Smart Meter Power Supply Input |
|
Use Scenario: Safeguarding USB host/device ports in point-of-sale terminals and medical devices against contact ESD and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with D+ and D− lines, grounded via short trace to system GND. Use Value: Adds <0.5 pF parasitic capacitance (per line), preserving 480 Mbps signaling integrity while passing ±15 kV air/±8 kV contact ESD. |
Use Scenario: Suppressing switching transients and lightning-induced surges on 5 V auxiliary rails in utility smart meters. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between VCC and GND to clamp overvoltage before LDO input stage. Use Value: Limits input rail excursion to ≤9.2 V during 600 W surges, preventing brownout resets and ensuring metrology accuracy continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/52 | Same electrical specs, but commercial-grade (non-AEC-Q101); no automotive qualification testing. | Limited to industrial/commercial use; not approved for automotive ECUs or ADAS subsystems. | Select when cost sensitivity outweighs automotive qualification requirements. |
| SAC5.0 | Lower PPPM (400 W), higher VC (14.5 V), same VWM/VBR; smaller SOD-123 package. | Insufficient for IEC 61000-4-5 Level 4; suitable only for low-energy ESD (IEC 61000-4-2) on space-constrained boards. | Choose only for compact consumer designs where 600 W surge immunity is not required. |
Compared with SMBJ5.0CA-E3/52, the SMBJ5.0CAHE3/52 adds AEC-Q101 validation for automotive use, while SAC5.0 trades surge robustness and thermal margin for footprint reduction - making SMBJ5.0CAHE3/52 the sole choice for mission-critical 600 W bidirectional protection with automotive compliance.
Availability
SMBJ5.0CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, USB 2.0 data lines, and smart meter auxiliary power supplies requiring stable component supply across multi-year production cycles.
Supply support for SMBJ5.0CAHE3/52 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-energy transient suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where failure modes must be mitigated without compromising signal fidelity.
FAQ
What is the clamping voltage of SMBJ5.0CAHE3/52 at its rated peak pulse current?
The SMBJ5.0CAHE3/52 clamps to a maximum of 9.2 V at its peak pulse current of 65.2 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and defines the upper voltage stress imposed on protected circuitry during surge events. The SMBJ5.0CAHE3/52 maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBJ5.0CAHE3/52 suitable for automotive applications?
Yes, SMBJ5.0CAHE3/52 is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, humidity bias, and mechanical shock - specifically validated for use in automotive electronics such as body control modules, infotainment systems, and sensor interfaces. The HE3 suffix explicitly denotes this qualification, distinguishing it from commercial-grade variants like SMBJ5.0CA-E3/52.
How does SMBJ5.0CAHE3/52 differ from unidirectional SMBJ5.0AHE3/52?
The SMBJ5.0CAHE3/52 is bidirectional, providing symmetrical clamping for AC signals or differential buses, whereas SMBJ5.0AHE3/52 is unidirectional and conducts only in reverse bias. Key differences include absence of cathode band marking on SMBJ5.0CAHE3/52, identical VBR min/max in both directions (6.4–7.25 V), and applicability to lines without defined polarity - such as CAN, RS-485, or audio paths. The SMBJ5.0CAHE3/52 cannot replace unidirectional types in DC-biased circuits requiring forward conduction.
What is the thermal resistance of SMBJ5.0CAHE3/52, and how does it affect PCB layout?
The SMBJ5.0CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay spec; reducing pad area increases thermal resistance and risks junction overheating during repetitive surges. For reliable operation, maintain full copper pour under both terminals and avoid thermal reliefs on mounting pads. The SMBJ5.0CAHE3/52's RθJL of 20 °C/W further emphasizes the need for solid thermal connection to PCB copper.
Does SMBJ5.0CAHE3/52 meet RoHS and halogen-free requirements?
Yes, SMBJ5.0CAHE3/52 is RoHS-compliant per EU Directive 2011/65/EU and carries the HE3 suffix indicating compliance with both RoHS and AEC-Q101. It is not halogen-free - that designation applies only to HM3-suffixed variants. The SMBJ5.0CAHE3/52 uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing. Material declarations and compliance documentation are available upon request from Aetrix Electronics.
SMBJ5.0CAHE3/52 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):
- 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)
SMBJ5.0CAHE3/52 FAQ
1.How can I place an order for SMBJ5.0CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHE3/52 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 SMBJ5.0CAHE3/52 reliable?
The price and inventory of SMBJ5.0CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHE3/52?
SMBJ5.0CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHE3/52 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 SMBJ5.0CAHE3/52?
For technical support, including SMBJ5.0CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ5.0CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHE3/52 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 SMBJ5.0CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHE3/52?
All SMBJ5.0CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHE3/52, 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 SMBJ5.0CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHE3/52 Tags
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