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Vishay General Semiconductor - Diodes Division SMB8J5.0CA-M3/52
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- Part No.:
- SMB8J5.0CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CA-M3/52.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,728
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Product details
Overview
SMB8J5.0CA-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 a 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR) at 10 mA, 9.2 V clamping voltage (VC) at 2000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J5.0CA-M3/52 datasheet, SMB8J5.0CA-M3/52 pinout, SMB8J5.0CA-M3/52 application, or SMB8J5.0CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm 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. Its glass-passivated junction ensures stable breakdown behavior, while bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and delivers 87.0 A maximum IPPM at 10/1000 µs when derated above 25 °C ambient - validated under ANSI/IEEE C62.35 surge standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse working voltage before clamping activation |
| VBR (min/max) | 6.40 V / 7.25 V at IT = 10 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 9.2 V at IPPM = 2000 A - clamping voltage limiting downstream circuit stress during surge |
| PPPM | 800 W (10/1000 µs) - peak transient energy absorption capacity under standardized surge waveform |
| IR @ VWM | 2000 µA max - low leakage ensuring minimal standby power loss and signal integrity |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance enabling efficient heat transfer to PCB copper |
| TJ max. | +150 °C - extended thermal rating supporting under-hood automotive and industrial environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity: bidirectional - no cathode marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically - bidirectional conduction allows placement without orientation check |
| Case (body) | Thermal interface | Exposed metal slug transfers heat directly to PCB copper pads (0.2" × 0.2") for thermal derating compliance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for modern automotive and industrial supply chains |
| Low incremental surge resistance | Enables tighter clamping (VC = 9.2 V) under 2000 A surge, reducing voltage overshoot on protected ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard 260 °C reflow without baking preconditioning |
| Glass passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional shunt clamp absorbing up to 800 W surges while maintaining <9.2 V rail voltage during transients. Use Value: Prevents latch-up or permanent damage to 5 V-tolerant microcontrollers and signal-conditioning ASICs in engine control modules. | Use Scenario: Safeguarding PLC digital input channels against field-wiring induced surges and relay contact bounce. IC Role / Device Role: Fast-response (sub-nanosecond) voltage limiter placed across 24 V DC input terminals prior to optocoupler isolation stage. Use Value: Eliminates need for external series impedance or RC snubbers, reducing BOM count and board space in DIN-rail mounted controllers. |
| USB 2.0 Data Line Protection | DC Power Rail Clamp (5 V) |
Use Scenario: ESD and cable discharge protection on USB D+/D− lines in automotive infotainment head units. IC Role / Device Role: Low-capacitance bidirectional TVS (CJ ≈ 100 pF at 0 V) suppressing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity up to 480 Mbps while meeting automotive EMC test requirements without degrading eye diagram. | Use Scenario: Secondary overvoltage clamp on regulated 5 V supply rails feeding safety-critical logic in ADAS domain controllers. IC Role / Device Role: Redundant shunt protector backing up primary DC-DC OVP, triggered only during abnormal conditions (e.g., feedback loop failure). Use Value: Limits rail excursion to ≤9.2 V, preventing catastrophic failure of 5.5 V absolute-maximum-rated FPGAs and PMICs. |
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-M3/52 | 1000 W PPPM (unidirectional variant); same VWM/VBR/VC but lower IPPM (1000 A vs. 2000 A) | Not rated for bidirectional 2000 A surges; unsuitable for AC-coupled or symmetric line protection | Select only if unidirectional operation and lower surge margin are acceptable |
| SMAJ5.0CA-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Limited to lower-energy transients; thermal performance inadequate for sustained surge duty cycles | Use where board space is constrained and surge threat level is Class I/II per IEC 61000-4-5 |
Compared with SMBJ5.0CA-M3/52 and SMAJ5.0CA-M3, SMB8J5.0CA-M3/52 provides 2× higher bidirectional surge current handling and superior thermal dissipation - making it the preferred choice for AEC-Q101-compliant 5 V rail protection in harsh environments.
Availability
SMB8J5.0CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, USB 2.0 data line hardening, and 5 V DC power rail clamping requiring stable component supply and full traceability.
Supply support for SMB8J5.0CA-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 SMB8JxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in automotive and industrial systems where bidirectional clamping and thermal robustness are critical.
FAQ
What is the clamping voltage of SMB8J5.0CA-M3/52 at its rated peak pulse current?
The SMB8J5.0CA-M3/52 has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPPM) of 2000 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream 5 V logic circuits remain within safe operating limits during surge events.
Is SMB8J5.0CA-M3/52 suitable for automotive applications?
Yes, SMB8J5.0CA-M3/52 is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (M3 suffix). Its -55 °C to +150 °C operating range, MSL Level 1 rating, and validation against automotive surge standards (ISO 7637-2, IEC 61000-4-5) make it suitable for engine control units, body electronics, and ADAS sensor modules.
How does the bidirectional design of SMB8J5.0CA-M3/52 affect PCB layout?
The SMB8J5.0CA-M3/52 is fully bidirectional with symmetrical terminals and no polarity marking, eliminating orientation constraints during placement. This simplifies PCB layout, reduces assembly errors, and supports protection of AC-coupled or differential signal pairs (e.g., RS-485, CAN) without additional routing considerations.
What is the thermal resistance from junction to lead (RθJL) for SMB8J5.0CA-M3/52?
The SMB8J5.0CA-M3/52 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, enabling efficient heat transfer from the silicon die to the PCB copper pads. This value supports reliable operation under repeated surge conditions when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout.
Does SMB8J5.0CA-M3/52 meet industry-standard surge test requirements?
Yes, SMB8J5.0CA-M3/52 is characterized per ANSI/IEEE C62.35 and validated for 800 W peak pulse power (10/1000 µs), making it compliant with IEC 61000-4-5 (Level 3/4), ISO 16750-2 (load dump), and ISO 7637-2 (pulse 1, 2a, 3a/b) when applied with proper PCB layout and decoupling. Its 2000 A IPPM rating exceeds typical Class III surge thresholds.
SMB8J5.0CA-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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)
SMB8J5.0CA-M3/52 FAQ
1.How can I place an order for SMB8J5.0CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CA-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 SMB8J5.0CA-M3/52 reliable?
The price and inventory of SMB8J5.0CA-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 SMB8J5.0CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CA-M3/52?
SMB8J5.0CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CA-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 SMB8J5.0CA-M3/52?
For technical support, including SMB8J5.0CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CA-M3/52 requirements.
6.How does Aetrix verify that SMB8J5.0CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CA-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 SMB8J5.0CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CA-M3/52?
All SMB8J5.0CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CA-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 SMB8J5.0CA-M3/52 part is unused and in its original packaging.
Return procedure for SMB8J5.0CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CA-M3/52 Tags
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