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Vishay General Semiconductor - Diodes Division SMBJ36-E3/52
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- Part No.:
- SMBJ36-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36-E3/52.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,578
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Product details
Overview
SMBJ36-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR at 1.0 mA), 58.1 V clamping voltage (VC) at 10.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines of industrial motor drives and automotive body control modules.
For engineers reviewing the SMBJ36-E3/52 datasheet, SMBJ36-E3/52 pinout, SMBJ36-E3/52 application, or SMBJ36-E3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, JEDEC-compliant packaging details, and AEC-Q101 qualification status for automotive-grade deployment.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche response. Its low incremental surge resistance (typical <0.5 Ω) and sub-nanosecond response time ensure effective suppression of fast-rising transients up to 10.3 A (10/1000 µs).
Thermal design relies on RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, enabling operation from –55 °C to +150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail protection threshold. |
| VBR (min/max) | 40.0 V / 44.2 V at 1.0 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 58.1 V at 10.3 A - clamped voltage during 600 W transient; determines protected circuit's maximum overvoltage exposure. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| IPPM | 10.3 A - peak pulse current capability; sets minimum surge current margin for 36 V system interfaces. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode identified by molded band; anode is unmarked end. Designed for PCB mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to meet thermal and surge ratings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated surge immunity for IEC 61000-4-5 Level 4 (4 kV line-to-ground) in 12 V–48 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers and microcontrollers. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; supports high-yield manufacturing with no floor-life restrictions. |
| AEC-Q101 qualified option (HE3 suffix) | Meets automotive reliability requirements including HTOL, TC, and ESD testing - validated for under-hood ECUs. |
| Glass-passivated junction | Ensures stable VBR tolerance (<±5%) and long-term parameter stability under thermal cycling. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 36 V supply rail and LIN bus lines from load dump and alternator ripple in BCMs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground. Use Value: Limits transient voltage to ≤58.1 V during 10.3 A surges, preventing damage to 40 V-rated MCU power pins and LIN transceivers. | Use Scenario: Shields 24–48 V digital input channels from field-wiring induced surges in factory automation PLCs. IC Role / Device Role / Timing Role: Standoff-clamp protector on each optocoupler input channel. Use Value: Clamps 1 kV/0.5 A surge (per IEC 61000-4-4) to safe levels within 1 ns, preserving input isolation integrity. |
| Telecom Power Supply Front-End | Motor Drive Gate Driver Protection |
Use Scenario: Safeguards AC/DC rectifier output and DC-DC converter inputs in telecom base station power supplies. IC Role / Device Role / Timing Role: Secondary-level TVS on 36 V intermediate bus against lightning-induced coupling. Use Value: Absorbs 600 W pulses without degradation, maintaining <1 µA leakage at 36 V to avoid standby power loss. | Use Scenario: Guards isolated gate driver supply rails (e.g., 15–20 V) against Miller-induced transients in 400 V motor inverters. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on VDD pin of gate driver IC. Use Value: Prevents latch-up in driver ICs by clamping spikes to ≤58.1 V while adding <0.5 pF parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Same electrical specs and package; identical marking code "CP" and VBR range (40.0–44.2 V); differs only in ordering suffix convention. | No functional difference; both rated for commercial-grade 36 V unidirectional protection. | Select SMBJ36A-E3/52 if sourcing from legacy BOMs referencing "A" suffix nomenclature. |
| SMAJ36A-E3/52 | Lower 400 W PPPM, higher VC = 58.7 V at 7.5 A, SMA (DO-214AC) package (smaller 4.5 mm × 2.7 mm footprint). | Reduced surge margin; suitable only where space constraints outweigh power-handling needs. | Choose SMAJ36A-E3/52 only when PCB area is critical and peak surge current remains ≤7.5 A. |
Compared with SMBJ36A-E3/52, the SMBJ36-E3/52 offers identical protection performance but aligns with Vishay's updated part numbering; versus SMAJ36A-E3/52, it delivers +50% pulse power headroom and lower clamping voltage - critical for 36 V systems exposed to repetitive industrial surges.
Availability
SMBJ36-E3/52 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, telecom power front-ends, and motor drive gate driver circuits requiring stable component supply across production lifecycles.
Supply support for SMBJ36-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, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ36-E3/52 at its rated peak pulse current?
The SMBJ36-E3/52 has a maximum clamping voltage (VC) of 58.1 V at its rated peak pulse current (IPPM) of 10.3 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ36-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ36-E3/52 RoHS-compliant and lead-free?
Yes, SMBJ36-E3/52 is RoHS-compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It uses matte tin-plated leads and conforms to J-STD-002 and JESD 22-B102 solderability standards. The device also passes JESD 201 Class 2 whisker testing and meets UL 94 V-0 flammability requirements for its molding compound.
Does SMBJ36-E3/52 meet automotive qualification standards?
The base SMBJ36-E3/52 is commercial-grade and not AEC-Q101 qualified; however, the automotive variant SMBJ36HE3 is explicitly qualified per AEC-Q101. That version shares identical electrical characteristics and SMB package but adds stress testing for high-reliability automotive use. Engineers requiring automotive qualification must specify the HE3 suffix, not SMBJ36-E3/52.
What is the standoff voltage (VWM) and why is it critical for SMBJ36-E3/52 selection?
The standoff voltage (VWM) of SMBJ36-E3/52 is 36 V - the maximum continuous reverse voltage the device can block without entering avalanche conduction. Selecting a VWM ≥ system operating voltage prevents false triggering during normal operation. For a nominal 36 V rail, SMBJ36-E3/52 provides optimal margin: VWM matches the rail while VBR starts at 40.0 V, ensuring reliable blocking and clean clamping onset.
How does the SMB package of SMBJ36-E3/52 impact thermal performance in PCB layout?
The SMB (DO-214AA) package of SMBJ36-E3/52 requires specific pad geometry - 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - to achieve its rated RθJA of 100 °C/W. Reducing pad size increases thermal resistance, derating both power dissipation and surge capability. Layouts must also maintain clearance to adjacent traces to prevent arcing during clamping events. The SMBJ36-E3/52's low profile (2.20 mm height) supports compact, low-profile board designs.
SMBJ36-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:
- 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-E3/52 FAQ
1.How can I place an order for SMBJ36-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36-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 SMBJ36-E3/52 reliable?
The price and inventory of SMBJ36-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 SMBJ36-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ36-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36-E3/52?
SMBJ36-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36-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 SMBJ36-E3/52?
For technical support, including SMBJ36-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36-E3/52 requirements.
6.How does Aetrix verify that SMBJ36-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ36-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 SMBJ36-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ36-E3/52?
All SMBJ36-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36-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 SMBJ36-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ36-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36-E3/52 Tags
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