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Vishay General Semiconductor - Diodes Division SMBJ36CAHM3_A/H
- Part No.:
- SMBJ36CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHM3_A/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,323
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Product details
Overview
SMBJ36CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ36CAHM3_A/H datasheet, SMBJ36CAHM3_A/H pinout, SMBJ36CAHM3_A/H application, or SMBJ36CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both directions, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
The SMBJ36CAHM3_A/H is rated for TJ = –55 °C to +150 °C operation and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 100 °C/W junction-to-ambient thermal resistance requires careful PCB pad design (0.2" × 0.2") to sustain 5.0 W steady-state dissipation and avoid derating above TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at IT = 1 mA - Ensures reliable avalanche initiation within tight tolerance for predictable transient response. |
| VC (Clamping Voltage) | 58.1 V at IPPM = 10.3 A - Limits voltage seen by protected circuit during 10/1000 µs surge, critical for 3.3 V/5 V IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients (e.g., IEC 61000-4-5 Level 4) without failure when mounted on specified copper pads. |
| ID (Reverse Leakage) | 1.0 µA max. at VWM - Minimizes standby power loss and avoids false triggering in low-power sensor interfaces. |
| TJ max. | +150 °C - Supports operation in under-hood automotive or industrial enclosures with elevated ambient temperatures. |
| Package | SMB (DO-214AA) - Low-profile SMT footprint (5.21 mm × 4.06 mm × 2.20 mm) compatible with standard pick-and-place equipment. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping enables placement without orientation constraints on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) when properly mounted. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics where reliability under thermal cycling and humidity is mandatory. |
| Halogen-free & RoHS-compliant | Meets IPC-1752A material declaration requirements and supports environmentally regulated end markets (EU, China RoHS). |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead in high-volume SMT lines. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Voltage clamping element placed across DC bus or control line inputs to limit transient excursions to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V logic inputs during 100 V/10 µs switching transients, extending system MTBF. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Bidirectional transient suppressor installed at connector entry point to shunt ESD and ISO 7637-2 pulses. Use Value: Maintains communication integrity during 100 V/50 ms load dump events by clamping voltage to ≤58.1 V before downstream regulators. |
| Telecom Power Supplies | Consumer IoT Sensor Hubs |
|
Use Scenario: Input-stage protection of 48 V DC-DC converters against lightning-induced surges on PoE or AC/DC front-ends. IC Role / Device Role / Timing Role: Primary-level TVS placed before input filter capacitors to absorb energy before it reaches active regulation circuitry. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) without adding bulkier MOV-based solutions. |
Use Scenario: ESD protection for I²C and UART lines connecting environmental sensors (temp/humidity/pressure) to MCU hosts. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) bidirectional clamp minimizing signal distortion on 100 kHz–1 MHz digital buses. Use Value: Passes IEC 61000-4-2 ±8 kV contact discharge without data corruption or reset events in battery-powered edge devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CAHE3_A/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same electrical specs and SMB package. | Suitable for commercial-grade industrial equipment where automotive qualification is unnecessary. | Select when halogen-free content or automotive reliability validation is not required; lower cost alternative. |
| SMAJ36CAHM3_A/H | Lower PPPM rating (400 W vs. 600 W); same VWM/VBR/VC; SMA (DO-214AC) package with smaller footprint (4.5 mm × 2.7 mm). | Preferred for space-constrained consumer PCBs where 400 W surge margin suffices. | Choose for compact layouts accepting reduced surge handling; verify thermal performance with smaller pad area. |
Compared with SMBJ36CAHM3_A/H, SMBJ36CAHE3_A/H offers identical clamping performance without halogen-free or automotive qualification, while SMAJ36CAHM3_A/H trades 33% lower peak power for 30% smaller board area - requiring layout and thermal reassessment.
Availability
SMBJ36CAHM3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ36CAHM3_A/H 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 qualification.
The SMBJ series delivers high-power transient suppression in compact surface-mount packages, engineered specifically for robust overvoltage protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of SMBJ36CAHM3_A/H at its rated peak pulse current?
The SMBJ36CAHM3_A/H has a maximum clamping voltage (VC) of 58.1 V at 10.3 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured with the device mounted on 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuits during standardized surge events - critical for ensuring downstream 3.3 V or 5 V ICs remain within absolute maximum ratings.
Is SMBJ36CAHM3_A/H suitable for automotive applications?
Yes, SMBJ36CAHM3_A/H is AEC-Q101 qualified (denoted by HM3 suffix) and halogen-free, making it suitable for automotive body electronics, infotainment power rails, and sensor interfaces. Its –55 °C to +150 °C operating range, MSL Level 1 rating, and validated reliability under temperature cycling and humidity testing meet OEM requirements for under-hood and cabin-mounted modules.
How does the bidirectional configuration of SMBJ36CAHM3_A/H affect PCB layout?
The SMBJ36CAHM3_A/H has no polarity marking and symmetrical terminals, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled lines, differential buses (e.g., RS-485), or floating sensor references - unlike unidirectional variants that require cathode-band alignment. No silkscreen polarity indicator is needed, reducing assembly errors and supporting automated optical inspection.
What is the thermal resistance of SMBJ36CAHM3_A/H, and how does it impact board design?
SMBJ36CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperature under 5.0 W steady-state dissipation, designers must ensure adequate copper area and avoid excessive trace length or isolation - especially in enclosed industrial enclosures where ambient temperature may exceed 50 °C.
Does SMBJ36CAHM3_A/H meet industry surge immunity standards?
Yes, SMBJ36CAHM3_A/H supports compliance with IEC 61000-4-5 (surge immunity) Level 3 (2 kV line-earth) and IEC 61000-4-2 (ESD) ±8 kV contact discharge when applied with appropriate PCB layout (e.g., short traces to protected node, proper grounding). Its 600 W peak pulse power and 58.1 V clamping voltage provide sufficient margin to protect downstream circuitry without additional passive filtering in many Class B industrial designs.
SMBJ36CAHM3_A/H 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ36CAHM3_A/H FAQ
1.How can I place an order for SMBJ36CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHM3_A/H 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 SMBJ36CAHM3_A/H reliable?
The price and inventory of SMBJ36CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHM3_A/H?
SMBJ36CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHM3_A/H 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 SMBJ36CAHM3_A/H?
For technical support, including SMBJ36CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ36CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHM3_A/H 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 SMBJ36CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHM3_A/H?
All SMBJ36CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHM3_A/H, 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 SMBJ36CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ36CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHM3_A/H Tags
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