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Vishay General Semiconductor - Diodes Division SMB8J36CA-M3/52
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- Part No.:
- SMB8J36CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CA-M3/52.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,367
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Product details
Overview
SMB8J36CA-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 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V clamping voltage (VC) at 13.8 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 SMB8J36CA-M3/52 datasheet, SMB8J36CA-M3/52 pinout, SMB8J36CA-M3/52 application, or SMB8J36CA-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 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while the SMB package delivers thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
Rated for -55 °C to +150 °C operating junction temperature, SMB8J36CA-M3/52 meets MSL Level 1 per J-STD-020 (peak reflow 260 °C) and is qualified to AEC-Q101 for automotive use - confirmed by HM3/HM3_X ordering codes and Vishay's revision-controlled documentation (Doc. #88422, Rev. 09-Jan-2024).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 3.3 V/5 V/12 V/24 V rail protection |
| VBR min/max | 40.0 V / 44.2 V at IT = 1 mA - tight 10.5% tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 58.1 V at 13.8 A - clamping voltage limits downstream IC stress during 800 W transient events |
| PPPM | 800 W (10/1000 µs) - supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor circuits |
| TJ max | +150 °C - enables deployment in under-hood automotive environments and industrial enclosures |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals serve identically as clamping nodes; no cathode band - enables layout flexibility on bidirectional data/signal lines |
| Case (body) | Thermal conduction path | Exposed metal slug transfers heat to PCB copper pads; requires 5.0 mm × 5.0 mm minimum pad area per terminal per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS sensor, and infotainment modules |
| Halogen-free & RoHS-compliant (M3) | Meets JEDEC J-STD-201 Class 2 whisker resistance and global environmental mandates without compromising surge performance |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (58.1 V / 40.0 V = 1.45) - reduces let-through energy versus standard TVS diodes |
| Fast response time | <1 ps junction response - clamps before most microsecond-scale transients propagate into protected circuitry |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced popcorn failure |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing up to 800 W surges while maintaining ≤58.1 V clamping across 13.8 A pulses. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor front-ends and transceivers without adding series impedance or signal delay. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs and motor drives exposed to ground-bounce and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Symmetrical clamping element placed across differential A/B lines and common-mode GND to suppress ±1 kV EFT and 10/1000 µs surges. Use Value: Maintains signal integrity over 12 Mbps operation by limiting common-mode voltage excursion to <58.1 V, avoiding receiver saturation. |
| Consumer USB-C Port Protection | Smart Meter Power Line Interface |
Use Scenario: Guarding USB-C CC, VCONN, and sideband use (SBU) pins against ESD (IEC 61000-4-2 ±15 kV air) and hot-plug transients in portable electronics. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector with <1.0 µA leakage at 36 V. Use Value: Enables full-speed USB 2.0 signaling without bandwidth degradation while meeting UL 62368-1 surge immunity requirements. |
Use Scenario: Shielding microcontroller GPIOs and isolated power supply inputs in ANSI C12.20-certified smart meters from utility-side surges and neutral-ground faults. IC Role / Device Role / Timing Role: Primary clamping device on 24 V DC auxiliary supply and pulse-output metering lines. Use Value: Survives repeated 6 kV/3 kA surges per IEC 61000-4-5 Ed. 3, extending field lifetime beyond 15 years in outdoor deployments. |
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-M3/52 | 1000 W PPPM (unidirectional variant); same VWM/VBR/VC but higher IPPM (17.2 A) and lower RθJA (65 °C/W) | Unidirectional only - unsuitable for AC or differential line protection; requires polarity-aware layout | Select when protecting DC rails where polarity is fixed and higher surge margin is needed |
| SMCJ36CA-M3 | Larger SMC (DO-214AB) package; 1500 W PPPM, 22.5 A IPPM, same VWM/VBR/VC, but RθJA = 35 °C/W | Higher thermal mass and power handling - used where board space allows and >800 W surges are expected | Choose for industrial power supplies or telecom base stations needing extended surge endurance |
Compared with SMBJ36CA-M3/52 and SMCJ36CA-M3, SMB8J36CA-M3/52 offers optimal balance of bidirectional capability, compact SMB footprint, AEC-Q101 qualification, and 800 W surge rating - making it the preferred choice for space-constrained automotive and industrial signal-line protection where polarity symmetry matters.
Availability
SMB8J36CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and smart meter power interfaces requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMB8J36CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-density, AEC-Q101-compliant transient suppression in automotive and industrial systems where bidirectional clamping and low-profile SMT integration are critical.
FAQ
What is the clamping voltage of SMB8J36CA-M3/52 and how is it measured?
The SMB8J36CA-M3/52 has a maximum clamping voltage (VC) of 58.1 V, measured at a peak pulse current (IPPM) of 13.8 A using a 10/1000 µs double-exponential surge waveform per ANSI/IEEE C62.35. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and reflects worst-case device behavior under standardized surge conditions - critical for validating protection margins in safety-critical designs.
Is SMB8J36CA-M3/52 suitable for automotive applications?
Yes, SMB8J36CA-M3/52 is AEC-Q101 qualified and designated for automotive use via its HM3 suffix (halogen-free, RoHS-compliant, AEC-Q101). It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness - validated for deployment in engine control units, ADAS camera modules, and body electronics where transient immunity and long-term reliability are mandatory.
How does the M3 suffix affect SMB8J36CA-M3/52's compliance and performance?
The M3 suffix on SMB8J36CA-M3/52 indicates halogen-free construction and RoHS compliance per JEDEC J-STD-201 Class 2 whisker resistance, with no impact on electrical specs. It retains identical VWM (36 V), VBR (40.0–44.2 V), VC (58.1 V), and PPPM (800 W) as non-M3 variants - enabling drop-in replacement in environmentally regulated programs without design revalidation.
What is the thermal resistance of SMB8J36CA-M3/52 and how does it influence layout?
SMB8J36CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To achieve rated PPPM, the PCB must provide minimum 5.0 mm × 5.0 mm copper pads per terminal (per datasheet fig. 2), with internal ground planes recommended - insufficient copper area will derate surge capability and risk thermal runaway during repetitive transients.
Can SMB8J36CA-M3/52 be used in bidirectional signal lines like RS-485 or USB-C?
Yes, SMB8J36CA-M3/52 is explicitly bidirectional with no polarity marking, making it ideal for differential or AC-coupled signal lines. Its symmetrical clamping behavior protects both polarities equally - verified in RS-485 transceiver inputs and USB-C sideband use (SBU) pins where transient direction is unpredictable. The 1.0 µA leakage at 36 V ensures minimal impact on signal fidelity.
SMB8J36CA-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):
- 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 (SMBJ)
SMB8J36CA-M3/52 FAQ
1.How can I place an order for SMB8J36CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CA-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 SMB8J36CA-M3/52 reliable?
The price and inventory of SMB8J36CA-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 SMB8J36CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J36CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CA-M3/52?
SMB8J36CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CA-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 SMB8J36CA-M3/52?
For technical support, including SMB8J36CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CA-M3/52 requirements.
6.How does Aetrix verify that SMB8J36CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J36CA-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 SMB8J36CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J36CA-M3/52?
All SMB8J36CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CA-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 SMB8J36CA-M3/52 part is unused and in its original packaging.
Return procedure for SMB8J36CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CA-M3/52 Tags
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