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Vishay General Semiconductor - Diodes Division SMBJ36-E3/5B
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- Part No.:
- SMBJ36-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36-E3/5B.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,135
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Product details
Overview
SMBJ36-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown range (VBR at 1.0 mA), 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial power supplies.
For engineers reviewing the SMBJ36-E3/5B datasheet, SMBJ36-E3/5B pinout, SMBJ36-E3/5B application, or SMBJ36-E3/5B equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data, and AEC-Q101-qualified alternatives - all critical for layout-integrated transient protection design and BOM validation.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt device: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from protected circuitry. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) support reliable operation up to +150 °C junction temperature under pulsed stress.
The SMBJ36-E3/5B uses a glass-passivated silicon junction in an SMB (DO-214AA) package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Polarity is marked by a cathode band; it meets MSL Level 1 per J-STD-020 and is RoHS-compliant (E3 suffix), with no halogen content specified for this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse operating voltage before significant leakage; defines upper limit of normal circuit operation. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients above system rail. |
| VC (Clamping Voltage) | 58.1 V at 10.3 A (10/1000 µs) - Peak voltage seen by protected load during worst-case surge; enables safe margin below IC absolute max ratings. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability under standardized 10/1000 µs surge; supports repetitive 0.01% duty cycle events. |
| IPPM (Peak Pulse Current) | 10.3 A - Maximum non-repetitive surge current the device can safely clamp without degradation. |
| RθJA (Thermal Resistance) | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| TJmax | +150 °C - Maximum allowable junction temperature; sets upper bound for thermal design in enclosed or high-power environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return in unidirectional configuration; completes clamping loop during overvoltage events. |
| Cathode | Reverse-biased terminal / Surge input node | Connected to protected line (e.g., 36 V rail or signal trace); avalanche conduction initiates here when VWM is exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 36 V systems without parallel staging. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 40 V-rated MOSFETs or automotive-grade microcontrollers. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling per JESD22-A101. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility at 260 °C peak without baking - simplifies SMT assembly planning. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU Directive 2011/65/EU and China RoHS; suitable for industrial and consumer applications where halogen-free is not mandated. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: 36 V DC input stage of programmable logic controller (PLC) power module exposed to relay coil flyback and load dump transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between 36 V rail and chassis ground to clamp transients before they reach DC-DC converter ICs. Use Value: Limits voltage excursion to ≤58.1 V during 10.3 A surges, preserving 60 V input-rated buck controllers and preventing latch-up in downstream logic. |
Use Scenario: LIN bus or sensor supply line (36 V nominal) in BCM subjected to ISO 7637-2 Pulse 1 and Pulse 2a transients. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 36 V sensor VCC rail, absorbing negative-going spikes while maintaining <1 µA leakage at 36 V. Use Value: Maintains signal integrity during 100 V/50 ms transients without forward conduction, avoiding false resets in 3.3 V MCU peripherals. |
| Telecom DC Feeder Line Protection | Motor Drive Gate Driver Supply Rail |
|
Use Scenario: -48 V telecom power feed line experiencing lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to negative rail, clamping positive excursions on the -48 V line to protect upstream rectifier and monitoring ICs. Use Value: Withstands 600 W pulses without degradation, enabling compliance with GR-1089-CORE Zone 3 surge requirements. |
Use Scenario: 36 V isolated gate driver auxiliary supply in 3-phase inverter, exposed to Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Fast-response shunt protector across gate driver VDD-GND, activated within <1 ns to suppress >100 V ringing. Use Value: Clamps spike amplitude to 58.1 V, preventing gate oxide breakdown in 650 V SiC drivers rated for 60 V max VDD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free material compliance is required (e.g., EU public infrastructure projects). | Direct form-fit-function replacement; same thermal and clamping performance; verify halogen-free certification documentation for end-equipment compliance. |
| SMBJ36AHM3_B/I | AEC-Q101 qualified, halogen-free, RoHS-compliant; otherwise matches SMBJ36-E3/5B electrically and mechanically. | Qualified for automotive applications (e.g., engine control, ADAS power rails); requires automotive PPAP documentation. | Preferred for automotive designs needing qualification evidence; not drop-in for commercial use due to extended test reporting overhead. |
Compared with SMBJ36-E3/5B, the M3/5B variant adds halogen-free compliance without altering surge response, while the HM3_B/I version adds AEC-Q101 qualification - making it suitable for automotive deployment but requiring additional validation effort for non-automotive use.
Availability
SMBJ36-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom DC feeder protection, and motor drive gate driver circuits requiring stable component supply and repeatable surge clamping performance.
Supply support for SMBJ36-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, power efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and telecom infrastructure where consistent clamping and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ36-E3/5B under a 10/1000 µs surge?
The SMBJ36-E3/5B has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 10.3 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The SMBJ36-E3/5B maintains this clamping performance across its full operating temperature range, ensuring predictable protection behavior in real-world surge events.
Is SMBJ36-E3/5B suitable for automotive applications?
SMBJ36-E3/5B is a commercial-grade, RoHS-compliant part and is not AEC-Q101 qualified. For automotive use, Vishay offers the SMBJ36AHM3_B/I variant, which carries full AEC-Q101 qualification. The SMBJ36-E3/5B may be used in non-safety-critical automotive prototypes or aftermarket modules, but it lacks the stress-test documentation required for OEM production. Always specify SMBJ36AHM3_B/I when automotive qualification is mandatory.
What is the standoff voltage (VWM) and why does it matter for SMBJ36-E3/5B?
The standoff voltage (VWM) of SMBJ36-E3/5B is 36 V - the maximum DC or continuous reverse voltage the device can block without entering avalanche conduction. This parameter ensures minimal leakage (<1.0 µA at 25 °C) during normal operation, preventing unnecessary power loss or false triggering. Selecting a VWM just above the system's maximum steady-state voltage (e.g., 36 V rail) is essential to avoid premature clamping while retaining headroom for ripple and tolerance.
How does the SMB (DO-214AA) package of SMBJ36-E3/5B affect PCB layout?
The SMB (DO-214AA) package of SMBJ36-E3/5B measures 4.57 mm × 3.94 mm × 2.20 mm and requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for optimal thermal dissipation and surge current handling. Its low profile supports automated placement and dense board layouts, but designers must observe the cathode band orientation and maintain ≥0.5 mm clearance to adjacent traces to prevent arcing during clamping. The SMBJ36-E3/5B's RθJA of 100 °C/W assumes this pad layout.
Can SMBJ36-E3/5B replace a bidirectional TVS like SMBJ36CA?
No - SMBJ36-E3/5B is unidirectional and only protects against positive transients relative to its cathode; it conducts forward current if the anode exceeds cathode by >3.5 V. A bidirectional part like SMBJ36CA clamps both polarities symmetrically and is required for AC-coupled lines or floating references. Substituting SMBJ36-E3/5B for SMBJ36CA risks failure during negative surges. Use SMBJ36CA only where bidirectional clamping is explicitly needed - the SMBJ36-E3/5B remains optimal for DC rail protection with defined polarity.
SMBJ36-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ36-E3/5B FAQ
1.How can I place an order for SMBJ36-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36-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 SMBJ36-E3/5B reliable?
The price and inventory of SMBJ36-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 SMBJ36-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ36-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36-E3/5B?
SMBJ36-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36-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 SMBJ36-E3/5B?
For technical support, including SMBJ36-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36-E3/5B requirements.
6.How does Aetrix verify that SMBJ36-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ36-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 SMBJ36-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ36-E3/5B?
All SMBJ36-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36-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 SMBJ36-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ36-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36-E3/5B Tags
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