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Vishay General Semiconductor - Diodes Division SMBJ36HE3/52
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- Part No.:
- SMBJ36HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36HE3/52.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,434
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Product details
Overview
SMBJ36HE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤58.1 V at 10.3 A peak pulse current (IPPM) under 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives and automotive ECUs.
For engineers reviewing the SMBJ36HE3/52 datasheet, SMBJ36HE3/52 pinout, SMBJ36HE3/52 application, or SMBJ36HE3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance, and direct replacement guidance - all aligned with Vishay Document #88392 (Rev. 09-Jan-2024).
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device: during normal operation it presents high impedance above its 36 V reverse standoff voltage (VWM); when a transient exceeds its 40.0–44.2 V breakdown threshold (VBR), it avalanches rapidly (<1 ns response time) to limit voltage across protected circuitry. Its low incremental surge resistance ensures stable clamping under repetitive surges.
Rated for 600 W peak pulse power (10/1000 µs), it sustains 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and operates from −55 °C to +150 °C junction temperature. The HE3 suffix confirms RoHS-compliant construction with AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before leakage rises significantly; defines safe DC/AC rail margin. |
| VBR (min/max) | 40.0 V / 44.2 V at IT = 1 mA - precise avalanche onset range used to set protection threshold tolerance. |
| VC @ IPPM | ≤58.1 V at 10.3 A - clamped voltage during 10/1000 µs surge; determines maximum stress on downstream ICs. |
| PPPM | 600 W - peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; guides heatsinking requirements. |
| IFSM | 100 A - single half-sine surge rating (8.3 ms); supports protection against load dump events in 12 V automotive systems. |
| Junction Temp | −55 °C to +150 °C - extended operating range suitable for under-hood automotive and industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads; meets UL 94 V-0 flammability and J-STD-002 solderability standards. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; completes clamping loop during avalanche conduction. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 36 V supply rail or CAN_H); blocks reverse current until VBR exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients per ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in MOSFETs/ICs. |
| MSL Level 1 (260 °C reflow) | Enables compatibility with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECU power input subjected to load dump (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between VBAT and GND, activated within <1 ns to clamp surge below 58.1 V. Use Value: Prevents permanent damage to LDO regulators and microcontrollers by limiting peak voltage to safe levels during worst-case transients. |
Use Scenario: 36 V analog sensor supply line exposed to inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-sensor rail, suppressing ±1 kV EFT bursts (IEC 61000-4-4). Use Value: Maintains sensor accuracy and uptime by preventing false resets or ADC saturation caused by sub-100 ns transients. |
| Telecom Line Card Surge Suppression | Motor Drive Gate Driver Protection |
|
Use Scenario: DC power feed to remote telecom node (e.g., PoE-powered base station) experiencing lightning-induced surges on 48 V input. IC Role / Device Role / Timing Role: Primary TVS stage upstream of DC/DC converter, absorbing 600 W pulses before secondary protection engages. Use Value: Extends system MTBF by eliminating catastrophic failures from induced surges exceeding 1 kV on long cable runs. |
Use Scenario: High-side gate drive supply (15 V) in 3-phase inverter subject to Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Local TVS across gate driver VDD-GND, clamping fast-rising dV/dt spikes before they exceed gate oxide rating. Use Value: Eliminates gate oxide breakdown and erratic switching by limiting transient overvoltage to ≤58.1 V at critical control nodes. |
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-E3/52 | No AEC-Q101 qualification; commercial-grade only; identical VWM, VBR, and VC specs. | Not approved for automotive production; suitable for industrial/commercial designs without automotive qualification mandates. | Select when AEC-Q101 is not required and cost optimization is prioritized. |
| SMAJ36AHE3/A | Lower peak pulse power (400 W vs. 600 W); SMA (DO-214AC) package with smaller footprint and higher RθJA (140 °C/W). | Limited to lower-energy transients; less effective in load dump scenarios requiring >500 W absorption. | Choose only if board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4. |
Compared with SMBJ36A-E3/52 and SMAJ36AHE3/A, SMBJ36HE3/52 uniquely combines AEC-Q101 qualification, 600 W surge capacity, and SMB package thermal performance - making it the only option qualified for automotive power rail protection where both reliability and energy handling are mandatory.
Availability
SMBJ36HE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and motor drive gate drivers requiring stable component supply across multi-year production cycles.
Supply support for SMBJ36HE3/52 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, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMBJ series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be eliminated through AEC-Q101 stress testing and robust packaging.
FAQ
What is the clamping voltage of SMBJ36HE3/52 at its rated peak pulse current?
The SMBJ36HE3/52 clamps to a maximum of 58.1 V at its rated peak pulse current of 10.3 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay Document #88392, ensuring predictable overvoltage limiting for downstream components such as microcontrollers and gate drivers in the SMBJ36HE3/52 protection circuit.
Is SMBJ36HE3/52 qualified for automotive applications?
Yes, SMBJ36HE3/52 carries the HE3 suffix, which denotes RoHS-compliant construction and full AEC-Q101 qualification per Vishay's ordering nomenclature. This certification covers stress tests including temperature cycling, humidity bias HAST, and mechanical shock - validating SMBJ36HE3/52 for use in engine control units, body control modules, and ADAS sensor interfaces per automotive OEM requirements.
What is the standoff voltage (VWM) and why is it critical for SMBJ36HE3/52 selection?
The standoff voltage (VWM) of SMBJ36HE3/52 is 36 V - the maximum continuous reverse voltage it can block without significant leakage. This parameter is critical because it must exceed the normal operating voltage of the protected line (e.g., 36 V sensor supply or 24 V industrial rail) while remaining safely below the breakdown threshold. Selecting SMBJ36HE3/52 ensures reliable blocking during steady-state operation while enabling fast clamping when transients exceed 40.0 V.
How does the SMB (DO-214AA) package of SMBJ36HE3/52 impact thermal performance?
The SMB (DO-214AA) package of SMBJ36HE3/52 provides a thermal resistance of 100 °C/W (junction-to-ambient) when mounted on standard 0.2" × 0.2" copper pads, per Vishay's test conditions. This allows SMBJ36HE3/52 to dissipate 5.0 W continuously and sustain 600 W transient pulses without exceeding its 150 °C max junction temperature - a key advantage over smaller packages like SMA for high-power surge scenarios.
Can SMBJ36HE3/52 replace bidirectional TVS diodes in circuit designs?
No - SMBJ36HE3/52 is strictly unidirectional and must be oriented with its cathode toward the protected line and anode to ground. It cannot suppress positive transients on grounded lines or negative transients on positive rails. For bidirectional protection (e.g., data lines like RS-485), a part with "CA" suffix such as SMBJ36CAHE3/52 is required. Using SMBJ36HE3/52 in place of a bidirectional device leaves half the transient spectrum unprotected.
SMBJ36HE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ36HE3/52 FAQ
1.How can I place an order for SMBJ36HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36HE3/52 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 SMBJ36HE3/52 reliable?
The price and inventory of SMBJ36HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ36HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36HE3/52?
SMBJ36HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36HE3/52 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 SMBJ36HE3/52?
For technical support, including SMBJ36HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36HE3/52 requirements.
6.How does Aetrix verify that SMBJ36HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ36HE3/52 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 SMBJ36HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ36HE3/52?
All SMBJ36HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36HE3/52, 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 SMBJ36HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ36HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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