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Vishay General Semiconductor - Diodes Division SMBJ5.0CA-E3/52
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- Part No.:
- SMBJ5.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CA-E3/52.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:412
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Product details
Overview
SMBJ5.0CA-E3/52 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 voltage (VBR), 600 W peak pulse power (10/1000 µs), and clamps to ≤9.2 V at 65.2 A peak surge current - ideal for protecting I/O ports and sensor interfaces in industrial control systems.
For engineers reviewing the SMBJ5.0CA-E3/52 datasheet, SMBJ5.0CA-E3/52 pinout, SMBJ5.0CA-E3/52 application, or SMBJ5.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 65 A surge, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VC, and IPPM specifications in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ps) and stable clamping performance over temperature (-55 °C to +150 °C).
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), supports 0.01% duty-cycle repetitive surges, and exhibits low incremental surge resistance - critical for maintaining tight clamping during multi-pulse ESD or lightning-induced transients in telecom and automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse voltage before conduction begins; sets operating margin for 3.3 V/5 V logic lines. |
| VBR (min/max) | 6.4 V / 7.25 V at 10 mA - guaranteed breakdown threshold ensures reliable triggering above normal operating voltage. |
| VC @ IPPM | ≤9.2 V at 65.2 A - clamping voltage limits stress on downstream ICs during 600 W transient events. |
| PPPM | 600 W (10/1000 µs waveform) - defines single-event surge energy handling capacity for IEC 61000-4-5 compliance. |
| IPPM | 65.2 A - peak surge current capability determines minimum trace width and PCB layout robustness. |
| TJ max. | +150 °C - enables operation in high-temperature environments such as engine control units or industrial motor drives. |
| RθJA | 100 °C/W - thermal resistance informs derating requirements when mounted on standard 0.2" × 0.2" copper pads. |
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 (positive half-cycle) | Conducts during positive voltage excursions above VBR; symmetrical with cathode for bidirectional protection. |
| Cathode | Transient current entry (negative half-cycle) | Conducts during negative voltage excursions above VBR; functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing on 12 V supply rails. |
| Low clamping voltage (≤9.2 V) | Keeps protected ICs (e.g., RS-485 transceivers, microcontroller GPIOs) within safe absolute maximum ratings during transients. |
| MSL Level 1 rating | Allows direct placement into standard lead-free reflow profiles without baking or special handling. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity exposure. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I²C/SPI buses from load dump and inductive switching noise in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching precision ADC or MCU peripherals. Use Value: Prevents latch-up and parametric drift in 16-bit DACs by limiting voltage excursion to ≤9.2 V during 65 A surges. |
Use Scenario: Safeguarding LIN bus transceivers and door module microcontrollers against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail and LIN data line, operating alongside ceramic ESD suppressors. Use Value: Maintains functional safety integrity by clamping 100 V/500 ms load dump events to <10 V at the IC pin. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Secondary surge suppression on 48 V PoE input after primary MOV-based front-end filtering in network switches. IC Role / Device Role / Timing Role: Fast-response secondary clamp ensuring sub-10 ns reaction time to residual transients escaping upstream filters. Use Value: Reduces failure rate of DC-DC controllers by limiting VIN overshoot to 9.2 V during combined lightning + EFT events. |
Use Scenario: Bidirectional protection of USB-C CC and SBU pins against hot-plug ESD and cable-induced transients in portable devices. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS placed adjacent to USB-C receptacle to meet IEC 61000-4-2 Level 4 (15 kV air). Use Value: Preserves signal integrity on 10 Gbps SuperSpeed lanes while suppressing ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A-E3/52 | Unidirectional; cathode-marked; 5.0 V VWM, 6.4–7.07 V VBR, same package and PPPM | Requires polarity-aware layout; suitable only for DC-biased lines like 5 V supply rails. | Select when protecting unidirectional power rails where reverse conduction must be blocked. |
| SMCJ5.0CA-E3/52 | Same VWM/VBR but larger SMC (DO-214AB) package; 1500 W PPPM; RθJA = 35 °C/W | Higher surge rating suits higher-energy threats (e.g., 4 kV IEC 61000-4-5); requires larger PCB area. | Choose for mission-critical 24 V industrial PLC inputs needing extended surge endurance. |
Compared with SMBJ5.0A-E3/52, the unidirectional variant lacks symmetry for AC signals; compared with SMCJ5.0CA-E3/52, SMBJ5.0CA-E3/52 trades surge margin for space-constrained layouts where 600 W suffices and board real estate is premium.
Availability
SMBJ5.0CA-E3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, telecom power inputs, and consumer USB-C port protection requiring stable component supply and full RoHS compliance.
Supply support for SMBJ5.0CA-E3/52 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, MOSFETs, and protection devices with emphasis on reliability and AEC-Q101 qualification.
The SMBJ series targets board-level transient suppression in space-constrained applications, balancing high surge capability with low-profile SMT packaging for automotive, industrial, and communications equipment.
FAQ
What is the clamping voltage of SMBJ5.0CA-E3/52 at its rated peak pulse current?
The SMBJ5.0CA-E3/52 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 confirms the device's ability to limit transient voltage stress on protected circuitry. The SMBJ5.0CA-E3/52 achieves this while maintaining bidirectional symmetry and low thermal resistance.
Is SMBJ5.0CA-E3/52 suitable for automotive applications?
SMBJ5.0CA-E3/52 is RoHS-compliant and rated for operation from -55 °C to +150 °C, making it suitable for under-hood and cabin automotive environments. While the base SMBJ5.0CA-E3/52 is commercial-grade, Vishay offers AEC-Q101-qualified variants (e.g., SMBJ5.0CAHE3_B/H) - the SMBJ5.0CA-E3/52 itself is not AEC-Q101 certified but widely used in non-safety-critical body electronics where qualification is not mandated.
How does SMBJ5.0CA-E3/52 differ from unidirectional SMBJ5.0A-E3/52?
The SMBJ5.0CA-E3/52 is bidirectional with identical electrical characteristics in both polarities and no cathode band marking, whereas SMBJ5.0A-E3/52 is unidirectional with a visible cathode band and conducts only in reverse bias. Both share the same SMB package, 5.0 V VWM, and 600 W PPPM, but SMBJ5.0CA-E3/52 enables protection of AC-coupled or floating lines without polarity constraints.
What is the maximum leakage current of SMBJ5.0CA-E3/52 at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMBJ5.0CA-E3/52 exhibits a maximum reverse leakage current (ID) of 800 µA. This low leakage ensures minimal power loss in always-on circuits and avoids false triggering in high-impedance sensor signal paths. The SMBJ5.0CA-E3/52 maintains this specification across its full operating temperature range.
Does SMBJ5.0CA-E3/52 require special PCB layout considerations?
Yes - for optimal thermal and surge performance, SMBJ5.0CA-E3/52 should be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended layout. Short, wide traces to ground/power planes reduce inductance and improve clamping response. The SMBJ5.0CA-E3/52's low RθJA (100 °C/W) depends on this pad geometry to sustain repetitive surges without junction overheating.
SMBJ5.0CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ5.0CA-E3/52 FAQ
1.How can I place an order for SMBJ5.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CA-E3/52 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 SMBJ5.0CA-E3/52 reliable?
The price and inventory of SMBJ5.0CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CA-E3/52?
SMBJ5.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CA-E3/52 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 SMBJ5.0CA-E3/52?
For technical support, including SMBJ5.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ5.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CA-E3/52 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 SMBJ5.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CA-E3/52?
All SMBJ5.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CA-E3/52, 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 SMBJ5.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ5.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CA-E3/52 Tags
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