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Vishay General Semiconductor - Diodes Division SMB8J36CA-E3/5B
- Part No.:
- SMB8J36CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CA-E3/5B.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,493
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Product details
Overview
SMB8J36CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 13.8 A peak pulse current (IPPM), 58.1 V clamping voltage (VC) at 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-E3/5B datasheet, SMB8J36CA-E3/5B pinout, SMB8J36CA-E3/5B application, or SMB8J36CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable clamping under repetitive surges. Its bidirectional architecture enables symmetrical protection of AC-coupled or differential signal paths without polarity sensitivity.
Rated for 800 W peak pulse power per 10/1000 µs waveform and derated above 25 °C per Fig. 2, it maintains reliable operation up to TJ = 150 °C and meets MSL Level 1 (260 °C reflow peak). The 1.0 µA max reverse leakage at VWM ensures minimal standby power impact in battery-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 40.0 V / 44.2 V at 1.0 mA - guaranteed breakdown threshold for reliable turn-on margin |
| VC @ IPPM | 58.1 V - clamping voltage seen by protected circuit during 13.8 A transient event |
| PPPM | 800 W - surge energy handling capacity per 10/1000 µs standard waveform |
| IPPM | 13.8 A - peak surge current supported before voltage exceeds VC |
| TJ max | +150 °C - maximum junction temperature enabling under-hood automotive use |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients - no fixed polarity |
| Cathode | Transient return path (bidirectional) | Functions identically to anode under reverse polarity - symmetric clamping behavior confirmed per datasheet bidirectional table |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without preconditioning or dry-pack requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair to clamp ±58.1 V surges while preserving signal integrity below 36 V. Use Value: Prevents latch-up or permanent damage to transceivers during ISO 16750-2 load dump events (up to 120 V, 400 ms), enabled by AEC-Q101 qualification and 150 °C operation. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and ground to shunt transients exceeding 36 V before reaching optocoupler input stage. Use Value: Maintains functional safety integrity per IEC 61000-4-5 Level 4 (4 kV surge) with 800 W dissipation and <1 ns response - no additional series impedance required. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers in base station remote units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted directly at connector entry point to limit common-mode transients to ≤58.1 V. Use Value: Enables compliance with ITU-T K.21 basic protection level using single-device solution - eliminates need for discrete resistor-capacitor filtering stages. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: TVS placed across motor terminals to absorb inductive kickback energy during MOSFET switching transitions. Use Value: Extends MOSFET lifetime by limiting drain-source voltage overshoot to 58.1 V, verified under 13.8 A peak surge per IEC 61000-4-4 EFT testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-E3/52 | Same VWM/VBR/VC specs; differs only in tape-and-reel packaging (750 pcs vs. 3200 pcs) | No functional difference; identical electrical and thermal performance | Select SMBJ36CA-E3/52 for lower-volume prototyping or small-batch production where reel size impacts inventory turnover |
| SMCJ36CA-E3/57T | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC | Requires PCB layout change due to 7.11 mm × 6.22 mm footprint vs. SMB's 4.57 mm × 3.94 mm | Choose SMCJ36CA-E3/57T only when system-level surge tests exceed 800 W - not a drop-in replacement |
Compared with SMBJ36CA-E3/52 (identical function, smaller reel) and SMCJ36CA-E3/57T (higher power, larger footprint), SMB8J36CA-E3/5B delivers optimal balance of AEC-Q101 compliance, compact SMB packaging, and 800 W surge capability for space-constrained automotive and industrial designs.
Availability
SMB8J36CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB8J36CA-E3/5B 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 and application-specific optimization.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh-environment automotive and industrial control systems.
FAQ
What is the clamping voltage of SMB8J36CA-E3/5B at its rated peak pulse current?
The SMB8J36CA-E3/5B has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 13.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream ICs experience no more than 58.1 V during surge events - critical for protecting 3.3 V or 5 V logic interfaces interfacing with 24 V or 36 V systems.
Is SMB8J36CA-E3/5B suitable for automotive applications?
Yes, SMB8J36CA-E3/5B is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HE3/HM3 suffix variants). Its construction - glass-passivated junction, MSL Level 1 rating, and operation up to +150 °C - meets requirements for engine bay, chassis, and ADAS sensor module deployments. The SMB8J36CA-E3/5B datasheet confirms qualification per stress test conditions including HTGB, H3TRB, and temperature cycling.
How does SMB8J36CA-E3/5B differ from unidirectional SMB10J36A-E3/5B?
SMB8J36CA-E3/5B is bidirectional with symmetrical clamping for AC or differential signals, whereas SMB10J36A-E3/5B is unidirectional and requires correct polarity orientation. Key differences include higher IPPM (13.8 A vs. 17.2 A), lower PPPM (800 W vs. 1000 W), and absence of forward voltage (VF) specification - confirming SMB8J36CA-E3/5B is not intended for DC power rail protection but for signal-line or bidirectional bus protection.
What is the thermal resistance of SMB8J36CA-E3/5B from junction to ambient?
The typical junction-to-ambient thermal resistance (RθJA) of SMB8J36CA-E3/5B is 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This value assumes standard JEDEC test board conditions and informs thermal design margins - for example, at 800 W peak power, junction temperature rise would be ~57.6 °C above ambient, well within the 150 °C maximum rating.
Does SMB8J36CA-E3/5B require a heatsink for standard operation?
No, SMB8J36CA-E3/5B does not require an external heatsink for transient suppression duty cycles, as its 800 W peak pulse power is rated for non-repetitive events with defined cooling intervals per Fig. 2 derating curves. Continuous power dissipation capability remains limited (<0.5 W steady-state), so thermal design focuses on PCB copper area (minimum 0.2" × 0.2" pads) rather than heatsinking - consistent with standard SMB footprint implementation guidelines.
SMB8J36CA-E3/5B 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 (SMB)
SMB8J36CA-E3/5B FAQ
1.How can I place an order for SMB8J36CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CA-E3/5B 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-E3/5B reliable?
The price and inventory of SMB8J36CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J36CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J36CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CA-E3/5B?
SMB8J36CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CA-E3/5B 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-E3/5B?
For technical support, including SMB8J36CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CA-E3/5B requirements.
6.How does Aetrix verify that SMB8J36CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J36CA-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J36CA-E3/5B?
All SMB8J36CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CA-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J36CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CA-E3/5B Tags
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