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Vishay General Semiconductor - Diodes Division SMB8J36CA-M3/5B
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- Part No.:
- SMB8J36CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CA-M3/5B.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,298
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Product details
Overview
SMB8J36CA-M3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on power and signal lines. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 13.8 A peak pulse current (IPPM) under 10/1000 µs waveform, and clamps to ≤58.1 V at rated surge, meeting AEC-Q101 for automotive electronics.
For engineers reviewing the SMB8J36CA-M3/5B datasheet, SMB8J36CA-M3/5B pinout, SMB8J36CA-M3/5B application, or SMB8J36CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, 800 W peak pulse power rating, low leakage (<1.0 µA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per Vishay's HM3 suffix standard.
Technical Context
This TVS diode operates as a voltage-clamping protector in parallel with sensitive circuit nodes, responding within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance across temperature.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W, enabling reliable operation on standard PCB copper pads (0.2" × 0.2") without forced cooling in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR min/max | 40.0 V / 44.2 V - Breakdown occurs within this range at 1.0 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | ≤58.1 V - Clamped voltage during 13.8 A 10/1000 µs surge; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 800 W - Peak pulse power handling under standardized 10/1000 µs waveform; quantifies single-event surge energy absorption. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at 36 V; critical for low-power sensor or battery-backed circuits where standby current matters. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive use and high-ambient industrial deployments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or floating lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current bidirectionally when voltage exceeds ±VBR - no orientation required during placement. |
| Cathode band (absent) | Polarity indicator | Not present on bidirectional variants; eliminates risk of incorrect orientation during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC lines, differential buses (e.g., CAN, RS-485), and floating sensors without polarity constraints. |
| Halogen-free & RoHS-compliant (M3) | Meets IEC 61249-2-21 and JEDEC J-STD-20 requirements for green manufacturing and end-of-life compliance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling prior to assembly. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage over temperature and lifetime, critical for automotive field reliability. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a), improving system-level immunity. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V supply rails in engine control units (ECUs) and body controllers against load dump and inductive switching spikes per ISO 7637-2. IC Role / Device Role / Timing Role: Parallel-connected voltage clamp that diverts surge current away from downstream regulators, microcontrollers, and gate drivers. Use Value: Limits rail voltage to ≤58.1 V during 800 W surges, preventing latch-up or permanent damage to 40 V-rated components. |
Use Scenario: Safeguarding analog outputs and digital I/O of pressure, temperature, or position sensors in factory automation systems exposed to relay coil kickback. IC Role / Device Role / Timing Role: Fast-response shunt element placed at sensor connector interface to absorb sub-microsecond transients before they reach precision front-end circuitry. Use Value: Sub-100 ns response time and ≤1.0 µA leakage preserve signal integrity and measurement accuracy in 24-bit ADC applications. |
| Telecom Data Line Surge Suppression | Consumer Appliance Motor Control Protection |
|
Use Scenario: Bidirectional protection of RS-485 transceivers in building management networks subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Symmetrical clamping device across differential pair (A/B lines), maintaining common-mode rejection while limiting differential overvoltage. Use Value: Matches differential bus impedance and clamps both polarities equally - avoids signal distortion or false triggering in half-duplex communication. |
Use Scenario: Shielding MCU GPIOs and H-bridge gate drivers in smart washing machines from motor commutation noise and brush arcing. IC Role / Device Role / Timing Role: Localized TVS at motor driver output stage to suppress repetitive 100–500 V spikes generated during PWM switching transitions. Use Value: Withstands >100,000 surge events per AEC-Q101 qualification, ensuring multi-year reliability in high-cycle consumer appliances. |
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-M3/5B | Same SMB package and 36 V rating, but lower PPPM (600 W vs. 800 W) and higher IPPM derating above 25 °C. | Less robust for repeated high-energy surges in under-hood automotive locations. | Select SMB8J36CA-M3/5B when full 800 W surge margin is required per ISO 16750-2. |
| SMCJ36CA-M3/5B | Larger SMC (DO-214AB) package with identical electrical specs but higher thermal mass and RθJA = 35 °C/W. | Better sustained power handling but requires larger PCB area and may not fit space-constrained modules. | Choose SMB8J36CA-M3/5B for compact layouts where 800 W must be delivered in minimal footprint. |
Compared with SMBJ36CA-M3/5B and SMCJ36CA-M3/5B, SMB8J36CA-M3/5B delivers superior power density (800 W in SMB) and automotive qualification out-of-box, making it optimal for space-limited, high-reliability 12 V/24 V systems requiring validated AEC-Q101 performance.
Availability
SMB8J36CA-M3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom data line protection, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMB8J36CA-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, efficiency, and application-specific optimization.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform engineered for high-power-density transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 validation and consistent clamping performance are mandatory.
FAQ
What is the peak pulse power rating of SMB8J36CA-M3/5B?
The SMB8J36CA-M3/5B has a peak pulse power rating (PPPM) of 800 W under the standardized 10/1000 µs waveform. This value reflects its ability to safely absorb single high-energy transients without failure, and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards. The 800 W rating distinguishes SMB8J36CA-M3/5B from lower-power variants like SMBJ36CA-M3/5B (600 W).
Is SMB8J36CA-M3/5B suitable for automotive applications?
Yes, SMB8J36CA-M3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HM3_X. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification. Its 150 °C max junction temperature and stable VBR over temperature make SMB8J36CA-M3/5B appropriate for engine bay, transmission control, and ADAS module protection.
What does the "CA" suffix indicate in SMB8J36CA-M3/5B?
The "CA" suffix in SMB8J36CA-M3/5B denotes a bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative voltage transients. This differs from unidirectional variants (e.g., SMB8J36A-M3/5B), which only clamp in one polarity and require correct cathode orientation. The CA version eliminates polarity concerns in AC or floating-line applications.
How does the M3 suffix affect compliance and processing of SMB8J36CA-M3/5B?
The M3 suffix indicates halogen-free, RoHS-compliant construction meeting IEC 61249-2-21 and JEDEC J-STD-20 standards. It also certifies MSL Level 1 rating (peak reflow temperature 260 °C), allowing SMB8J36CA-M3/5B to be placed directly onto PCBs using standard lead-free reflow profiles without pre-baking or special handling - reducing manufacturing complexity and cost.
What is the clamping voltage of SMB8J36CA-M3/5B at its rated surge current?
At its rated peak pulse current (IPPM) of 13.8 A (10/1000 µs waveform), SMB8J36CA-M3/5B clamps to a maximum voltage (VC) of 58.1 V. This clamping voltage defines the upper voltage limit imposed on protected circuitry during surge events and is guaranteed across temperature and production lot variations per Vishay's characterization data in Document 88422.
SMB8J36CA-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):
- 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-M3/5B FAQ
1.How can I place an order for SMB8J36CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CA-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 SMB8J36CA-M3/5B reliable?
The price and inventory of SMB8J36CA-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 SMB8J36CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J36CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CA-M3/5B?
SMB8J36CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CA-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 SMB8J36CA-M3/5B?
For technical support, including SMB8J36CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CA-M3/5B requirements.
6.How does Aetrix verify that SMB8J36CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J36CA-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 SMB8J36CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J36CA-M3/5B?
All SMB8J36CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CA-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 SMB8J36CA-M3/5B part is unused and in its original packaging.
Return procedure for SMB8J36CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CA-M3/5B Tags
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