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Vishay General Semiconductor - Diodes Division SMBJ36AHM3/I
- Part No.:
- SMBJ36AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36AHM3/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,338
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Product details
Overview
SMBJ36AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the SMBJ36AHM3/I datasheet, SMBJ36AHM3/I pinout, SMBJ36AHM3/I application, or SMBJ36AHM3/I equivalent, this page delivers verified electrical parameters, thermal behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world protection use cases - supporting ESD/surge design validation and BOM selection for high-reliability embedded systems.
Technical Context
This unidirectional TVS diode operates as a fast-acting shunt clamp during overvoltage events, leveraging a glass-passivated silicon junction with 150 °C max junction temperature and 100 °C/W junction-to-ambient thermal resistance. Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of inductive switching spikes and lightning-induced surges.
The device is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 1.0 µA max reverse leakage at VWM, and maintains stable clamping performance across -55 °C to +150 °C operating range - validated under J-STD-020 MSL Level 1 and qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before conduction begins; sets safe operating margin for 36 V nominal rail protection. |
| VBR (min/max) | 40.0 V / 44.2 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable triggering above system operating voltage with margin. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamped voltage during 600 W transient; limits stress on downstream 40 V-rated components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 3 surge immunity. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated SMT placement and reflow. |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant (HM3 suffix); meets automotive reliability and environmental requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts to ground when transient exceeds VBR. |
| Anode | Ground reference terminal | Low-impedance return path for surge current; must connect to solid ground plane for effective clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles IEC 61000-4-5 10/1000 µs surges up to 10.3 A without degradation - sufficient for 24 V/48 V industrial bus protection. |
| Fast response time | Sub-nanosecond junction turn-on enables clamping before sensitive ICs experience overvoltage damage. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics. |
| Halogen-free & RoHS | HM3 suffix confirms compliance with JEDEC J-STD-20 and EU RoHS Directive 2011/65/EU - no brominated flame retardants. |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events, improving protection margin for 3.3 V/5 V logic interfaces. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between 12 V supply and chassis ground. Use Value: Limits clamped voltage to 58.1 V, preventing latch-up or gate oxide damage in 40 V-rated power management ICs. |
Use Scenario: Shields 24 V digital input circuitry from inductive kickback when solenoids or relays de-energize. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to divert surge energy before optocoupler input stage. Use Value: Withstands 100 A surge (8.3 ms) and maintains <1 µA leakage at 36 V - ensuring stable logic-level detection during normal operation. |
| Telecom Power Supply Front-End | Motor Drive Gate Driver Protection |
|
Use Scenario: Guards AC/DC converter output against lightning-induced surges entering via PoE or external DC input. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side 48 V output rail feeding baseband processors. Use Value: 600 W rating and 58.1 V clamping allow compliance with ITU-T K.20 and IEC 61000-4-5 Level 4 immunity testing. |
Use Scenario: Safeguards high-side and low-side gate drivers from Miller-induced voltage spikes during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Localized TVS mounted directly at driver IC supply pins to suppress dV/dt coupling. Use Value: Sub-ns response and low VC prevent false triggering or shoot-through in half-bridge configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/I | Same electrical specs, but RoHS-compliant commercial grade (E3) without halogen-free certification. | Lacks halogen-free assurance; not approved for automotive AEC-Q101 applications. | Select when halogen-free requirement is absent and cost sensitivity outweighs automotive qualification needs. |
| SMAJ36A-M3 | Lower 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VC. | Reduced surge handling; suitable only for lower-energy transients or space-constrained layouts. | Choose only if board area is critical and surge threat level is below IEC 61000-4-5 Level 2. |
Compared with SMBJ36AHM3/I, SMBJ36AHE3/I omits halogen-free compliance and AEC-Q101 qualification while retaining identical clamping performance, whereas SMAJ36A-M3 trades 33 % lower pulse power and inferior thermal dissipation for smaller size - making SMBJ36AHM3/I the optimal choice for automotive and high-reliability industrial surge protection.
Availability
SMBJ36AHM3/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC input modules, telecom power front-ends, and motor drive gate driver protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ36AHM3/I 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, efficiency, and application-specific optimization.
The SMBJ series was developed for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the maximum clamping voltage of SMBJ36AHM3/I at its rated peak pulse current?
The SMBJ36AHM3/I has a maximum clamping voltage (VC) of 58.1 V at its specified peak pulse current (IPPM) of 10.3 A, measured under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a surge event and is critical for ensuring compatibility with downstream components' absolute maximum ratings. The SMBJ36AHM3/I maintains this clamping performance across its full operating temperature range.
Is SMBJ36AHM3/I qualified for automotive applications?
Yes, SMBJ36AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It is specifically intended for automotive under-hood and chassis applications such as engine control units, body control modules, and ADAS power supplies where reliability under thermal cycling, vibration, and high-energy transients is mandatory.
What does the "HM3" suffix indicate for SMBJ36AHM3/I?
The "HM3" suffix in SMBJ36AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3) and confirms compliance with JEDEC J-STD-20 MSL Level 1, JESD 201 Class 2 whisker resistance, and automotive reliability standards - essential for Tier 1 suppliers and OEMs requiring strict material declarations.
How does SMBJ36AHM3/I differ from bidirectional TVS diodes like SMBJ36CA?
SMBJ36AHM3/I is unidirectional and functions only in reverse breakdown, requiring correct polarity installation with the cathode band toward the protected line. In contrast, SMBJ36CA is bidirectional and symmetrical, suitable for AC-coupled or floating signal lines. The SMBJ36AHM3/I offers lower leakage (<1 µA at 36 V) and is preferred for DC power rail protection where polarity is fixed and leakage sensitivity matters.
What is the thermal resistance of SMBJ36AHM3/I, and how does it affect layout design?
SMBJ36AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value requires adequate PCB copper area and thermal vias for sustained surge duty cycles; insufficient copper increases junction temperature and reduces surge endurance. Layout must follow Vishay's recommended pad dimensions in the SMB (DO-214AA) outline drawing to maintain rated performance.
SMBJ36AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ36AHM3/I FAQ
1.How can I place an order for SMBJ36AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36AHM3/I 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 SMBJ36AHM3/I reliable?
The price and inventory of SMBJ36AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36AHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ36AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36AHM3/I?
SMBJ36AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36AHM3/I 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 SMBJ36AHM3/I?
For technical support, including SMBJ36AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36AHM3/I requirements.
6.How does Aetrix verify that SMBJ36AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36AHM3/I 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 SMBJ36AHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ36AHM3/I?
All SMBJ36AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36AHM3/I, 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 SMBJ36AHM3/I part is unused and in its original packaging.
Return procedure for SMBJ36AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36AHM3/I Tags
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