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Vishay General Semiconductor - Diodes Division SMBJ36CAHM3_A/I
- Part No.:
- SMBJ36CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHM3_A/I.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ36CAHM3_A/I 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 stand-off 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 motor drives.
For engineers reviewing the SMBJ36CAHM3_A/I datasheet, SMBJ36CAHM3_A/I pinout, SMBJ36CAHM3_A/I application, or SMBJ36CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.42), MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and AEC-Q101 qualification suitability for automotive-grade transient protection without layout redesign.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), but conducts heavily when reverse voltage exceeds VBR, diverting surge energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns).
The SMBJ36CAHM3_A/I is rated for repetitive 10/1000 µs surges at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. Polarity-unmarked due to bidirectional symmetry, it requires no orientation during automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR min/max | 40.0 V / 44.2 V at IT = 1 mA - guaranteed breakdown onset range; ensures consistent triggering across production lots |
| VC @ IPPM | 58.1 V at 10.3 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected IC or MOSFET |
| PPPM | 600 W - peak transient power dissipation capability; supports robust protection against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | 1.0 µA max - ultra-low reverse leakage at stand-off voltage; prevents unwanted loading of high-impedance sensor or bias networks |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive or enclosed industrial enclosures |
| Package | SMB (DO-214AA) - standardized 2-pin SMD outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012AC and IPC-7351B |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration - no polarity marking required. 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 |
|---|---|---|
| Anode | Transient current return path (bidirectional) | Completes low-inductance surge path to ground or rail; symmetric with cathode for AC or floating-line protection |
| Cathode | Transient current return path (bidirectional) | Functions identically to anode; interchangeable in PCB layout - no directional marking needed |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN bus, encoder outputs) without polarity concerns |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 10.3 A - meets IEC 61000-4-5 surge immunity requirements for industrial equipment |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-20E; eliminates brominated flame retardants for safer end-of-life processing |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics; includes HTOL, TC, and HAST testing |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to protected devices - critical for 3.3 V or 5 V logic interfacing with 36 V supply rails |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and current-sense amplifiers against inductive kickback from BLDC motor phase switching. IC Role / Device Role / Timing Role: Shunt TVS placed across DC bus or gate drive traces to clamp transients <100 ns after onset. Use Value: Limits voltage spikes to ≤58.1 V, preventing gate oxide rupture in 60 V-rated MOSFETs and maintaining ADC accuracy during commutation. |
Use Scenario: Surge suppression on LIN bus lines and door module power inputs exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Bidirectional clamping element directly mounted at connector entry point to absorb ±100 V/500 ms transients. Use Value: Maintains communication integrity by holding bus voltage within ±40 V window during ISO 7637-2 Pulse 5a, avoiding LIN transceiver reset. |
| Industrial Sensor Interfaces | Telecom Power Feeds |
|
Use Scenario: Guarding 4–20 mA current loop transmitters and RTD input stages against ESD and field wiring faults. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) standoff device placed upstream of precision op-amps and reference buffers. Use Value: Prevents input stage saturation during 8 kV contact ESD (IEC 61000-4-2), preserving measurement linearity and zero-point stability. |
Use Scenario: Secondary-side transient protection on -48 V telecom power distribution boards feeding remote radio units. IC Role / Device Role / Timing Role: High-power (600 W) clamping diode mounted adjacent to DC-DC converter input capacitors. Use Value: Absorbs 10/1000 µs surges up to 10.3 A without derating, ensuring uninterrupted PoE+ or CPRI link operation during lightning-induced grid disturbances. |
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/I | Same electrical specs, RoHS-compliant but not halogen-free; uses standard SnPb-free matte tin plating without halogen restriction | Approved for commercial/industrial use only; not certified for automotive under AEC-Q101 | Select when halogen-free requirement is waived and cost optimization is prioritized over automotive qualification |
| SMAJ36CAHM3_A/I | Lower PPPM (400 W vs. 600 W); same VWM/VBR/VC but reduced IPPM (6.8 A vs. 10.3 A); SMA (DO-214AC) package (smaller footprint) | Insufficient for IEC 61000-4-5 Level 4; suitable only for lower-energy ESD or localized board-level transients | Choose only for space-constrained designs where surge threat level is limited to IEC 61000-4-2 ESD or low-duty-cycle switching noise |
Compared with SMBJ36CAHE3_A/I, the SMBJ36CAHM3_A/I adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ36CAHM3_A/I, it delivers 50% higher surge power handling in a slightly larger SMB package - essential for high-reliability industrial and automotive power rail protection.
Availability
SMBJ36CAHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, industrial sensor interfaces, and telecom power feeds requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ36CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and application-specific validation.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial automation, and telecom infrastructure where failure tolerance and long-term parametric stability are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ36CAHM3_A/I under a 10/1000 µs surge?
The SMBJ36CAHM3_A/I 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 Figure 1 in Vishay Document 88392 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMBJ36CAHM3_A/I maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C), with minimal derating required up to TJ = 125 °C.
Is SMBJ36CAHM3_A/I suitable for automotive applications?
Yes, SMBJ36CAHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3_X" (where "X" denotes revision A or later). It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST) per AEC-Q101 Rev D. The SMBJ36CAHM3_A/I is approved for use in body electronics, lighting control, and infotainment power domains - but not for safety-critical systems unless explicitly validated by the end customer per ISO 26262.
How does the bidirectional design of SMBJ36CAHM3_A/I affect PCB layout?
The SMBJ36CAHM3_A/I has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. PCB layout requires symmetric 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to meet the specified thermal resistance (RθJA = 100 °C/W) and surge current handling. Unlike unidirectional TVS diodes, the SMBJ36CAHM3_A/I can be placed across AC-coupled lines, differential buses, or floating supplies without risk of reverse-bias damage - simplifying layout and reducing BOM variants.
What is the leakage current specification for SMBJ36CAHM3_A/I at its stand-off voltage?
At its rated stand-off voltage (VWM) of 36 V and TA = 25 °C, the SMBJ36CAHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA. This ultra-low leakage ensures minimal impact on high-impedance circuits such as precision voltage references, thermistor bias networks, or battery-monitoring dividers. Leakage remains below 5 µA up to 85 °C ambient, supporting stable operation in sealed enclosures without thermal runaway concerns.
Does SMBJ36CAHM3_A/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMBJ36CAHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/85% RH and withstand lead-free reflow profiles with a maximum peak temperature of 260 °C. This eliminates bake requirements prior to assembly and supports standard SMT processes including nitrogen reflow and vapor phase soldering - critical for high-yield manufacturing of automotive and industrial control modules where SMBJ36CAHM3_A/I is commonly deployed.
SMBJ36CAHM3_A/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:
- 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/I FAQ
1.How can I place an order for SMBJ36CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHM3_A/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 SMBJ36CAHM3_A/I reliable?
The price and inventory of SMBJ36CAHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHM3_A/I?
SMBJ36CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHM3_A/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 SMBJ36CAHM3_A/I?
For technical support, including SMBJ36CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ36CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHM3_A/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 SMBJ36CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHM3_A/I?
All SMBJ36CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHM3_A/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 SMBJ36CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ36CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHM3_A/I Tags
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