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Vishay General Semiconductor - Diodes Division SMB8J36CA-E3/52
- Part No.:
- SMB8J36CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CA-E3/52.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,073
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Product details
Overview
SMB8J36CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 800 W peak pulse power (10/1000 µs), 36 V stand-off voltage (VWM), and 58.1 V clamping voltage (VC) at 13.8 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom front-end circuits against ESD and inductive switching transients.
For engineers reviewing the SMB8J36CA-E3/52 datasheet, SMB8J36CA-E3/52 pinout, SMB8J36CA-E3/52 application, or SMB8J36CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low leakage (<1 µA at 36 V), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA reverse leakage at 36 V, but triggers into low-impedance conduction when transient voltage exceeds its 40.0–44.2 V breakdown range (tested at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
Thermally, it features RθJA = 72 °C/W and RθJL = 20 °C/W, enabling reliable operation up to +150 °C junction temperature. The SMB package supports MSL Level 1 handling and withstands 260 °C peak reflow per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 40.0 V / 44.2 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 58.1 V - Clamped voltage during 13.8 A 10/1000 µs surge, limiting downstream stress |
| PPPM | 800 W - Peak pulse power handling per 10/1000 µs waveform, critical for lightning/inductive spike immunity |
| ID @ VWM | <1 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or data lines |
| TJ max | +150 °C - Enables use in under-hood automotive or enclosed industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking (unlike unidirectional variants which feature cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients - symmetrical conduction |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional construction; terminals are interchangeable |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage and long-term parameter stability across temperature and life |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS device placed directly at connector entry point to clamp transients before reaching protected ICs. Use Value: Withstands 800 W surges and maintains <1 µA leakage at 36 V, preserving signal fidelity while meeting ISO 16750-2 and ISO 10605 requirements. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules exposed to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each channel's input node, coordinated with series current-limiting resistor. Use Value: 58.1 V clamping voltage ensures downstream optocoupler or Schmitt trigger remains within safe operating area during 1 kV/500 A surge events. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Front-end protection of Ethernet PHYs, PoE injectors, or DSL line drivers against induced lightning surges and hot-swap transients. IC Role / Device Role / Timing Role: Bidirectional shunt element on differential pair or DC bias rail, selected for symmetry and low capacitance. Use Value: Symmetrical 40–44.2 V breakdown enables balanced clamping on both polarities, minimizing common-mode distortion in high-speed data paths. | Use Scenario: Secondary-side transient suppression on 36 V output rails of switched-mode power supplies used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage clamp after bulk filtering, absorbing residual switching spikes and external coupling noise. Use Value: 36 V VWM aligns precisely with nominal output, allowing full utilization of margin before clamping activates at 58.1 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-E3/52 | Same SMB package, same VWM/VC specs, but rated for 600 W PPPM (vs. 800 W) | Limited to lower-energy surge environments (e.g., consumer USB ports vs. automotive power lines) | Select SMB8J36CA-E3/52 where 800 W immunity per IEC 61000-4-5 Level 4 is required |
| SMCJ36CA-E3/52 | Higher-power SMC (DO-214AB) package, 1500 W PPPM, same VWM/VC | Requires larger PCB footprint and higher thermal mass; suited for main power rail protection | Choose SMB8J36CA-E3/52 when space-constrained layouts demand SMB footprint without sacrificing 800 W rating |
Compared with SMBJ36CA-E3/52 and SMCJ36CA-E3/52, SMB8J36CA-E3/52 uniquely delivers 800 W surge capability in the compact SMB outline-enabling automotive-grade protection where board area is limited but energy levels exceed standard SMBJ ratings.
Availability
SMB8J36CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer power adapter outputs requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB8J36CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in space-constrained automotive and industrial systems.
FAQ
What is the clamping voltage of SMB8J36CA-E3/52 at its rated peak pulse current?
The SMB8J36CA-E3/52 has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 13.8 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe operating limits during surge events. The SMB8J36CA-E3/52 achieves this clamping performance while maintaining low incremental surge resistance, a key factor in transient energy dissipation.
Is SMB8J36CA-E3/52 suitable for automotive applications?
Yes, SMB8J36CA-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control module environments. Its construction includes glass-passivated junction technology, MSL Level 1 moisture sensitivity, and guaranteed operation from –55 °C to +150 °C. The SMB8J36CA-E3/52 meets ISO 16750-2 load dump and ISO 10605 ESD requirements when implemented per Vishay's recommended pad layout and thermal design guidelines.
How does SMB8J36CA-E3/52 differ from unidirectional SMB10J36A-E3/52?
The SMB8J36CA-E3/52 is bidirectional with symmetric breakdown (40.0–44.2 V in both directions) and no polarity marking, whereas SMB10J36A-E3/52 is unidirectional, featuring a cathode band and conducting only in reverse bias. SMB8J36CA-E3/52 offers 800 W PPPM and 13.8 A IPPM, while SMB10J36A-E3/52 delivers 1000 W PPPM and 17.2 A IPPM but requires correct orientation. The SMB8J36CA-E3/52 is preferred for AC-coupled or differential signal lines where polarity cannot be assumed.
What is the reverse leakage current of SMB8J36CA-E3/52 at its stand-off voltage?
At its 36 V stand-off voltage (VWM), the SMB8J36CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C, as specified in the Vishay datasheet. This ultra-low leakage preserves signal integrity in high-impedance circuits such as sensor front-ends or precision analog monitoring paths. Leakage remains well below 10 µA even at elevated temperatures up to +125 °C, ensuring stable performance across automotive and industrial operating ranges.
Does SMB8J36CA-E3/52 require special PCB layout considerations?
Yes - Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal to achieve rated 800 W pulse power and thermal performance. The SMB8J36CA-E3/52 must be mounted using standard SMT reflow profiles compliant with J-STD-020 (peak 260 °C), and the absence of polarity marking means orientation is non-critical. Thermal vias under pads are recommended for sustained surge duty cycles to maintain junction temperature below 150 °C.
SMB8J36CA-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- 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 (SMB)
SMB8J36CA-E3/52 FAQ
1.How can I place an order for SMB8J36CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CA-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 SMB8J36CA-E3/52 reliable?
The price and inventory of SMB8J36CA-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 SMB8J36CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J36CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CA-E3/52?
SMB8J36CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CA-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 SMB8J36CA-E3/52?
For technical support, including SMB8J36CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CA-E3/52 requirements.
6.How does Aetrix verify that SMB8J36CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J36CA-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 SMB8J36CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J36CA-E3/52?
All SMB8J36CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CA-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 SMB8J36CA-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J36CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CA-E3/52 Tags
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