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Vishay General Semiconductor - Diodes Division SMBJ5.0CA-M3/5B
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- Part No.:
- SMBJ5.0CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CA-M3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,322
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Product details
Overview
SMBJ5.0CA-M3/5B 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 and 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), <12.0 V clamping voltage at rated surge current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the SMBJ5.0CA-M3/5B datasheet, SMBJ5.0CA-M3/5B pinout, SMBJ5.0CA-M3/5B application, or SMBJ5.0CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 65 A surge, halogen-free RoHS-compliant construction, and suitability for IEC 61000-4-2/4-4/4-5 compliant protection circuits in consumer, industrial, and telecom interfaces.
Technical Context
This device functions as a voltage-clamping protector with symmetrical avalanche breakdown in both polarities, enabling robust suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<800 µA at VWM) and fast response time (<1.0 ns), while the low incremental surge resistance supports effective energy diversion during ESD and lightning-induced surges.
The SMBJ5.0CA-M3/5B is rated for 600 W peak pulse power per 10/1000 µs waveform at 25 °C, derating linearly above 25 °C with RθJA = 100 °C/W. It meets MSL Level 1 per J-STD-020 and is halogen-free (M3 suffix), distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin. |
| VBR min/max | 6.4 V / 7.25 V - Breakdown occurs within this range at 10 mA test current; ensures reliable turn-on before system damage threshold. |
| VC @ IPPM | 9.2 V - Clamped voltage at 65.2 A peak pulse current; limits downstream IC stress during 600 W transient events. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates immunity to IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 800 µA - Reverse leakage at 5.0 V; low enough to avoid signal integrity degradation in high-impedance sensor lines. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals require no anode/cathode orientation during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient suppression; no functional distinction due to symmetrical structure. |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completes low-inductance clamping path across protected line; enables differential or common-mode surge shunting. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, USB D+/D−) without polarity concerns. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 65.2 A-meets IEC 61000-4-5 Level 4 (4 kV line-to-ground) in typical PCB layouts. |
| Halogen-free & RoHS-compliant (M3) | Complies with JEDEC J-STD-208 and EU Directive 2015/863; eliminates brominated flame retardants for safer end-of-life processing. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak-eliminates bake requirements and simplifies SMT manufacturing flow. |
| Low clamping voltage (9.2 V) | Keeps protected ICs (e.g., 5 V logic, microcontrollers) below absolute maximum ratings during surge events, reducing failure risk. |
Applications
| Industrial Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to motor switching noise in factory automation cabinets. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across signal and ground to shunt inductive kickback before reaching ADC input. Use Value: Limits transient excursions to ≤9.2 V, preserving 12-bit ADC accuracy and preventing latch-up in 5 V supply rails. |
Use Scenario: Safeguarding USB 2.0 D+ and D− lines against ESD events during hot-plug insertion in embedded host controllers. IC Role / Device Role / Timing Role: Bidirectional suppressor mounted differential across data pair to clamp ±8 kV contact discharge per IEC 61000-4-2. Use Value: Sub-1 ns response ensures clamping before USB PHY transceiver damage threshold (typically 6–7 V), maintaining signal integrity. |
| Telecom Power Input Stage | Automotive Body Control Module |
|
Use Scenario: Suppressing load-dump transients on 5 V auxiliary power rails feeding Ethernet PHYs in VoIP gateways. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to clamp 12 V rail surges exceeding 20 V for <100 ms duration. Use Value: 600 W rating handles 300 ms load-dump pulses when combined with upstream current limiting, extending DC/DC converter lifetime. |
Use Scenario: Protecting LIN bus transceivers from battery reversal and jump-start spikes in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging LIN line to ground to absorb ±40 V transients per ISO 7637-2 Pulse 1/2a. Use Value: 5.0 V VWM aligns with LIN physical layer's 12 V nominal but 5 V logic interface, ensuring no false triggering during normal operation. |
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-E3/5B | Same electrical specs, but RoHS-compliant with brominated flame retardants (non-halogen-free); MSL Level 1, same SMB package. | Acceptable for commercial-grade systems where halogen-free compliance is not mandated by OEM or regulatory requirement. | Select SMBJ5.0CA-E3/5B only if halogen content restrictions do not apply and cost optimization is prioritized over green material compliance. |
| SAC5.0 | Lower 400 W PPPM, higher VC = 14.5 V at 29 A, same VWM/VBR; SOD-123FL package (smaller, lower thermal mass). | Limited to lower-energy threats (e.g., IEC 61000-4-2 Level 2); unsuitable for 4 kV surge environments or high-current inductive loads. | Choose SAC5.0 only for space-constrained, low-risk consumer ports where 600 W capability and 9.2 V clamping are not required. |
Compared with SMBJ5.0CA-E3/5B, the SMBJ5.0CA-M3/5B adds halogen-free compliance without sacrificing clamping performance or thermal robustness; versus SAC5.0, it delivers 50 % higher surge power handling and 37 % lower clamping voltage-critical for protecting sensitive 5 V logic in industrial and automotive domains.
Availability
SMBJ5.0CA-M3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB 2.0 data line protection, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ5.0CA-M3/5B 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, precision, and application-specific optimization.
The SMBJ series targets board-level transient protection in harsh environments-designed for high-energy surge immunity in industrial, automotive, and telecom infrastructure where consistent clamping and thermal stability are non-negotiable.
FAQ
What is the clamping voltage of SMBJ5.0CA-M3/5B at its rated peak pulse current?
The SMBJ5.0CA-M3/5B has a maximum clamping voltage (VC) of 9.2 V at its rated peak pulse current (IPPM) of 65.2 A, measured under the standard 10/1000 µs waveform. This value ensures that downstream 5 V logic circuits remain within safe operating limits during surge events, directly supporting design margin for IEC 61000-4-5 compliance. The SMBJ5.0CA-M3/5B achieves this with low incremental surge resistance and symmetrical bidirectional conduction.
Is SMBJ5.0CA-M3/5B suitable for automotive applications?
The SMBJ5.0CA-M3/5B itself is commercial-grade (M3 suffix), not AEC-Q101 qualified; however, it shares identical electrical characteristics and SMB package with AEC-Q101 variants like SMBJ5.0CAHM3_B/I. For non-safety-critical automotive subsystems-such as infotainment USB ports or body control LIN lines-engineers may use SMBJ5.0CA-M3/5B with appropriate system-level validation. The SMBJ5.0CA-M3/5B operates reliably from –55 °C to +150 °C and meets MSL Level 1, supporting under-hood thermal profiles.
How does the bidirectional nature of SMBJ5.0CA-M3/5B affect PCB layout?
The SMBJ5.0CA-M3/5B has no polarity marking and identical terminal behavior in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for differential or floating lines-such as RS-485, CAN FD, or audio inputs-where traditional unidirectional TVS diodes would require careful anode/cathode alignment. The SMBJ5.0CA-M3/5B can be placed across any two nodes needing symmetrical overvoltage protection without affecting signal integrity or surge path inductance.
What is the maximum reverse leakage current for SMBJ5.0CA-M3/5B at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM), the SMBJ5.0CA-M3/5B exhibits a maximum reverse leakage current (ID) of 800 µA at 25 °C. This low leakage preserves signal fidelity on high-impedance sensor outputs and communication lines, avoiding unwanted loading or offset errors. The SMBJ5.0CA-M3/5B maintains this specification across its full operating temperature range, with leakage increasing predictably per datasheet derating curves.
Does SMBJ5.0CA-M3/5B meet industry surge immunity standards?
Yes-the SMBJ5.0CA-M3/5B is engineered to meet key surge immunity standards including IEC 61000-4-2 (ESD ±8 kV contact), IEC 61000-4-4 (EFT ±2 kV), and IEC 61000-4-5 (surge 4 kV line-to-ground, 2 kV line-to-line) when implemented with proper PCB layout (e.g., short traces, ground plane coupling). Its 600 W peak pulse power and 9.2 V clamping voltage directly support Level 4 compliance in 2 Ω source impedance configurations. The SMBJ5.0CA-M3/5B achieves this without external components, enabling compact, cost-effective protection schemes.
SMBJ5.0CA-M3/5B 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-M3/5B FAQ
1.How can I place an order for SMBJ5.0CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CA-M3/5B 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-M3/5B reliable?
The price and inventory of SMBJ5.0CA-M3/5B 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-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CA-M3/5B?
SMBJ5.0CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CA-M3/5B 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-M3/5B?
For technical support, including SMBJ5.0CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ5.0CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CA-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CA-M3/5B?
All SMBJ5.0CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CA-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CA-M3/5B Tags
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