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Vishay General Semiconductor - Diodes Division SMBJ36AHM3_B/I
- Part No.:
- SMBJ36AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36AHM3_B/I.pdf
- Description:
- 600W,36V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,814
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Product details
Overview
SMBJ36AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 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.
For engineers reviewing the SMBJ36AHM3_B/I datasheet, SMBJ36AHM3_B/I pinout, SMBJ36AHM3_B/I application, or SMBJ36AHM3_B/I equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ns) and low incremental surge resistance. Its 150 °C maximum junction temperature and MSL Level 1 rating support reflow soldering up to 260 °C peak.
The SMBJ36AHM3_B/I delivers stable clamping across ambient temperatures via a +0.100 %/°C VBR temperature coefficient and maintains ≤1.0 µA reverse leakage at 36 V standoff. It is rated for 100 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and derates linearly above 25 °C per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC rail protection threshold. |
| VBR min/max | 40.0 V / 44.2 V at 1.0 mA IT - Confirmed breakdown range ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamping voltage under standardized 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability with 0.01 % duty cycle; supports repetitive surge events in industrial environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on minimum recommended pad layout; informs PCB copper area requirements for thermal management. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Low-profile SMT package with 0.220" × 0.155" footprint; compatible with standard pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 5.59 mm × 3.94 mm × 2.44 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point in unidirectional mode | Connected to lower-potential side of protected line (e.g., ground or return path); must be routed with low-inductance trace. |
| Cathode | Clamping output terminal (marked with band) | Connected to higher-potential side (e.g., VCC or signal line); conducts surge current to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1; supports green manufacturing and end-of-life compliance. |
| 600 W 10/1000 µs surge rating | Withstands EN 61000-4-5 Level 4 (4 kV) surge events on 50 Ω source impedance without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfaces and MOSFET gate drivers. |
| Fast response time & low dynamic impedance | Sub-nanosecond turn-on and <0.5 Ω incremental surge resistance ensure effective suppression before sensitive circuitry is stressed. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between VBAT and GND, absorbing >100 V spikes within nanoseconds. Use Value: Limits voltage seen by microcontroller power supply to ≤58.1 V, preventing latch-up or permanent damage during vehicle cranking or alternator regulation faults. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) in factory-floor pressure/temperature sensors from ESD and cable-coupled noise. IC Role / Device Role / Timing Role: Bidirectional-capable design not used; SMBJ36AHM3_B/I serves as unidirectional clamp on signal return path relative to local ground. Use Value: Maintains signal integrity below 36 V standoff while clamping induced surges to 58.1 V, preserving ADC input range and avoiding saturation or reset. |
| Telecom DC Power Input Stage | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered switches and base station RF modules from lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary TVS in series with input filter capacitor; shunts surge energy to chassis ground before reaching DC/DC converter. Use Value: Withstands 600 W peak pulses without failure, enabling compliance with IEC 61000-4-5 Ed. 3 Class 3 (2 kV differential mode) testing. |
Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Secondary clamp after primary common-mode choke; handles fast-rising ESD (IEC 61000-4-2 ±15 kV contact) and hot-swap transients. Use Value: Clamps VBUS to ≤58.1 V within <1 ns, protecting USB PD controller and Type-C CC logic from overvoltage-induced malfunction or latch-up. |
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_B/I | Same electrical specs, but RoHS-compliant without halogen-free certification; uses standard SnPb-free matte tin plating. | Approved for commercial/industrial use; not qualified to AEC-Q101 or halogen-free material standards. | Select when automotive qualification or halogen-free compliance is not required; lower cost alternative for non-automotive BOMs. |
| SMCJ36A-M3 | Larger SMC (DO-214AB) package; same VWM/VBR/VC ratings but higher RθJA (60 °C/W) and 1500 W PPPM rating. | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout. | Choose for higher-reliability industrial systems where 1500 W surge headroom and improved thermal dissipation justify added board space. |
Compared with SMBJ36AHM3_B/I, SMBJ36AHE3_B/I offers identical clamping behavior without halogen-free assurance, while SMCJ36A-M3 provides greater surge robustness in a larger package-enabling trade-offs between board density, thermal headroom, and material compliance.
Availability
SMBJ36AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power inputs, and consumer USB-C port protection requiring stable component supply and full traceability.
Supply support for SMBJ36AHM3_B/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in space-constrained SMT designs, targeting automotive, industrial, and communications systems where AEC-Q101 qualification and halogen-free compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ36AHM3_B/I under a 10/1000 µs surge?
The SMBJ36AHM3_B/I has a maximum clamping voltage (VC) of 58.1 V at 10.3 A peak pulse current (IPPM), measured with a 10/1000 µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ36AHM3_B/I achieves this clamping performance while maintaining low dynamic impedance and sub-nanosecond response.
Is SMBJ36AHM3_B/I qualified for automotive applications?
Yes, SMBJ36AHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the SMBJ5.0A–SMBJ188A datasheet (Document Number: 88392, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-making SMBJ36AHM3_B/I suitable for engine control units, body electronics, and ADAS power domains.
What does the "HM3" suffix indicate in SMBJ36AHM3_B/I?
The "HM3" suffix in SMBJ36AHM3_B/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free molding compound and terminations, and "3" confirms RoHS compliance per EU Directive 2011/65/EU. This distinguishes it from "HE3" (AEC-Q101 + RoHS, not halogen-free) and "E3" (RoHS only, no AEC-Q101).
Can SMBJ36AHM3_B/I be used in bidirectional configurations?
No, SMBJ36AHM3_B/I is a unidirectional TVS diode, identified by its cathode band marking and specified electrical parameters (e.g., VBR only defined for reverse direction, VF = 3.5 V max. at 50 A forward). For bidirectional protection, Vishay specifies part numbers ending in "CA", such as SMBJ36CA. Using SMBJ36AHM3_B/I in reverse-biased configurations risks permanent damage due to lack of symmetrical breakdown capability.
What is the thermal resistance and recommended PCB layout for SMBJ36AHM3_B/I?
SMBJ36AHM3_B/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, as defined in the datasheet. To achieve this rating, designers must follow the recommended SMB (DO-214AA) mounting pad layout-ensuring adequate copper area, minimal trace inductance, and avoidance of thermal relief on high-current paths. Derating applies above 25 °C ambient per Figure 2.
SMBJ36AHM3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for SMBJ36AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36AHM3_B/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_B/I reliable?
The price and inventory of SMBJ36AHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ36AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36AHM3_B/I?
SMBJ36AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36AHM3_B/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_B/I?
For technical support, including SMBJ36AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ36AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36AHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ36AHM3_B/I?
All SMBJ36AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36AHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMBJ36AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36AHM3_B/I Tags
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