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Vishay General Semiconductor - Diodes Division SMB8J8.0CA-M3/52
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- Part No.:
- SMB8J8.0CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J8.0CA-M3/52.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,142
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Product details
Overview
SMB8J8.0CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage (VC) at 100 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - optimized for automotive and industrial interface protection.
For engineers reviewing the SMB8J8.0CA-M3/52 datasheet, SMB8J8.0CA-M3/52 pinout, SMB8J8.0CA-M3/52 application, or SMB8J8.0CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the bidirectional configuration enables symmetric clamping across both polarities without external polarity management.
Designed per ANSI/IEEE C62.35 standards, SMB8J8.0CA-M3/52 delivers repeatable clamping performance up to 150 °C junction temperature, with thermal resistance RθJL = 20 °C/W enabling effective heat dissipation into PCB copper pads. It meets MSL Level 1 per J-STD-020 and supports peak surge currents up to 100 A under standardized 10/1000 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 8.89 V / 9.83 V at 1.0 mA test current - guaranteed breakdown threshold range for reliable triggering |
| VC @ IPPM | 13.6 V at 100 A - clamping voltage limiting downstream circuit stress during worst-case surge |
| PPPM | 800 W (10/1000 µs) - energy-handling capacity for transient suppression in automotive and industrial environments |
| ID @ VWM | 1.0 µA - ultra-low leakage ensuring minimal standby power impact on sensitive signal lines |
| TJ max. | +150 °C - extended thermal rating supporting under-hood and high-temperature PCB layouts |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity: bidirectional - no cathode marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals function identically - enables placement without orientation constraints in AC-coupled or floating signal paths |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant (M3) | Meets global environmental regulations without compromising surge robustness or thermal performance |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| Low-profile SMB package | Enables high-density layout in space-constrained modules such as ADAS sensor ECUs and infotainment interfaces |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
| 800 W peak pulse power | Provides margin against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surge events in 12 V automotive systems |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Shunt-type transient clamp placed directly at connector entry point to limit voltage excursion before reaching precision ADC front-end. Use Value: Clamps to ≤13.6 V during 100 A surges, preserving sensor signal integrity and preventing ADC saturation or damage to downstream op-amps. | Use Scenario: Safeguarding CANH/CANL differential pair in vehicle body control modules subjected to ESD and coupled noise from adjacent high-current wiring. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines to suppress common-mode transients without disrupting DC bias or signal symmetry. Use Value: Symmetric clamping maintains CAN signal eye diagram integrity and prevents false dominant states caused by >13.6 V common-mode spikes. |
| Consumer USB Port ESD Protection | Power Supply Input Surge Suppression |
Use Scenario: Hardening USB 2.0 data lines (D+/D−) in portable medical devices against IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated near USB connector to divert ESD current away from PHY transceiver. Use Value: Sub-1 µA leakage at 8.0 V VWM avoids pull-up/pull-down interference; fast response preserves USB signal rise/fall times. | Use Scenario: Front-end protection of 12 V DC input rails in industrial HMIs and PLC I/O modules facing lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary shunt protector mounted upstream of input filter and DC-DC converter to absorb bulk surge energy before regulation stage. Use Value: 800 W PPPM rating handles 10/1000 µs surges up to 1 kV, reducing need for secondary protection stages and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J8.0CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Commercial-grade only - lacks AEC-Q101 qualification and whisker resistance class 2 | Select when halogen-free requirement is not mandated and cost optimization is prioritized |
| SMBJ8.0CA-M3/52 | Unidirectional variant (SMBJ series); same VWM, VC, and PPPM but asymmetric conduction | Requires polarity-aware layout; unsuitable for AC or floating differential lines without additional components | Choose only for unidirectional DC rails where reverse blocking is needed and orientation can be controlled |
Compared with SMB8J8.0CA-M3/52, the E3 variant trades halogen-free compliance and AEC-Q101 qualification for lower cost in non-automotive settings, while the SMBJ8.0CA-M3/52 requires careful polarity alignment and cannot replace SMB8J8.0CA-M3/52 in bidirectional signal paths without redesign.
Availability
SMB8J8.0CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB ports, and 12 V DC power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB8J8.0CA-M3/52 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, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-qualified surge suppression in harsh automotive and industrial environments where bidirectional clamping and thermal stability are critical.
FAQ
What is the clamping voltage of SMB8J8.0CA-M3/52 at its rated peak pulse current?
The SMB8J8.0CA-M3/52 has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 100 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry remains protected below this threshold during surge events. The SMB8J8.0CA-M3/52 achieves this with low incremental surge resistance and a glass-passivated junction for consistent performance across temperature and lifetime.
Is SMB8J8.0CA-M3/52 suitable for automotive applications?
Yes, SMB8J8.0CA-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its M3 suffix indicates halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance, and it meets MSL Level 1 reflow requirements. The SMB8J8.0CA-M3/52 is commonly deployed in ADAS sensor interfaces, body control modules, and infotainment power rails where bidirectional transient suppression is required.
How does the bidirectional design of SMB8J8.0CA-M3/52 affect PCB layout?
The bidirectional design of SMB8J8.0CA-M3/52 eliminates polarity sensitivity - both terminals are functionally identical, so no cathode band orientation is required during placement. This simplifies automated assembly and enables use in AC-coupled, floating, or differential signal paths (e.g., CAN, RS-485, audio lines) without risk of reverse connection. The SMB8J8.0CA-M3/52 can be placed in either direction on the PCB, reducing layout constraints and minimizing potential assembly errors.
What is the thermal resistance of SMB8J8.0CA-M3/52, and how does it impact power dissipation?
SMB8J8.0CA-M3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads. This allows efficient heat transfer from the die to the PCB, supporting repeated surge events without thermal runaway. For sustained operation, the SMB8J8.0CA-M3/52 relies on short-duration pulses (≤100 ms), and its 150 °C max junction temperature ensures robustness in high-ambient environments like automotive cabins or industrial enclosures.
Does SMB8J8.0CA-M3/52 meet industry standards for surge and ESD protection?
Yes, SMB8J8.0CA-M3/52 complies with multiple industry standards: it is rated per ANSI/IEEE C62.35 for transient suppression, meets IEC 61000-4-2 ESD (±30 kV air, ±30 kV contact per internal qualification), and withstands IEC 61000-4-5 surge waveforms (10/1000 µs). Its AEC-Q101 qualification further validates performance under automotive-specific stress tests including temperature cycling, HTRB, and mechanical shock - confirming suitability for SMB8J8.0CA-M3/52 in mission-critical protection roles.
SMB8J8.0CA-M3/52 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 58.8A
- Power - Peak Pulse:
- 800W
- 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)
SMB8J8.0CA-M3/52 FAQ
1.How can I place an order for SMB8J8.0CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J8.0CA-M3/52 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 SMB8J8.0CA-M3/52 reliable?
The price and inventory of SMB8J8.0CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J8.0CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J8.0CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J8.0CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J8.0CA-M3/52?
SMB8J8.0CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J8.0CA-M3/52 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 SMB8J8.0CA-M3/52?
For technical support, including SMB8J8.0CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J8.0CA-M3/52 requirements.
6.How does Aetrix verify that SMB8J8.0CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J8.0CA-M3/52 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 SMB8J8.0CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J8.0CA-M3/52?
All SMB8J8.0CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J8.0CA-M3/52, 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 SMB8J8.0CA-M3/52 part is unused and in its original packaging.
Return procedure for SMB8J8.0CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J8.0CA-M3/52 Tags
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