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Vishay General Semiconductor - Diodes Division SMBJ110CAHM3_B/H
- Part No.:
- SMBJ110CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110CAHM3_B/H.pdf
- Description:
- 600W,110V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,206
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Product details
Overview
SMBJ110CAHM3_B/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 110 V stand-off voltage (VWM), 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), 600 W peak pulse power (10/1000 µs), and operates across –55 °C to +150 °C junction temperature. It protects MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the SMBJ110CAHM3_B/H datasheet, SMBJ110CAHM3_B/H pinout, SMBJ110CAHM3_B/H application, or SMBJ110CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, 110 V stand-off rating, 177 V clamping voltage under 3.4 A surge, SMB package compatibility with automated SMT placement, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltages induced by inductive switching or ESD events. Its symmetrical breakdown behavior ensures identical clamping in both polarities, making it suitable for AC-coupled or floating signal paths where polarity reversal is possible.
The device delivers 600 W peak pulse power handling with a 10/1000 µs waveform at TA = 25 °C, derating linearly above 25 °C per Fig. 2 of the datasheet. Thermal resistance is 100 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, and 20 °C/W junction-to-lead (RθJL), supporting reliable operation in compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse stand-off voltage before clamping begins; defines operating margin below breakdown. |
| VBR min / max | 122 V / 135 V at IT = 1 mA - Verified breakdown threshold range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 177 V at 3.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power dissipation capability; enables robust protection against lightning-induced surges and load-switching transients. |
| IPPM | 3.4 A - Peak surge current supported at rated clamping voltage; directly correlates with energy absorption (E ≈ VC × ∫i dt). |
| TJ max | +150 °C - Maximum junction temperature; supports operation in high-ambient environments such as industrial motor drives and base station power rails. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak). Bidirectional configuration has no polarity marking; terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; voltage clamping occurs when differential voltage exceeds ±122 V, enabling AC or floating-line protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in industrial motor controls and telecom line interfaces without degradation. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment while maintaining JESD201 Class 2 whisker resistance. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces. |
| 150 °C maximum junction temperature | Supports reliable long-term operation in enclosed enclosures or near heat-generating components like power MOSFETs or transformers. |
Applications
| Industrial Motor Drives | Telecom Line Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing circuits from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional TVS clamps voltage spikes exceeding ±122 V on isolated DC bus monitoring lines and PWM control traces. Use Value: Prevents latch-up or permanent damage to op-amps and microcontrollers exposed to >1 kV transients, extending system uptime in factory automation. |
Use Scenario: Surge suppression on POTS or xDSL line interface cards subjected to lightning-induced common-mode surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp limits differential-mode overvoltage across transformer-coupled line receivers before front-end amplifiers. Use Value: Maintains signal integrity up to 2 MHz while absorbing 600 W surge energy, meeting GR-1089-CORE immunity requirements without added filtering complexity. |
| Automotive Body Control Module | Consumer Sensor Hub |
|
Use Scenario: Input protection for LIN bus transceivers and window lift motor controllers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Clamps transients on 12 V supply rails and bidirectional data lines during battery disconnection events. Use Value: AEC-Q101 qualified variant (HM3 suffix) ensures reliability under thermal cycling and vibration, reducing field failure rates in harsh vehicle environments. |
Use Scenario: ESD and EFT protection for I²C/SPI lines connecting MEMS accelerometers, gyroscopes, and environmental sensors in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp suppresses 8 kV contact ESD (IEC 61000-4-2) without distorting low-speed digital waveforms. Use Value: Enables direct integration into space-constrained sensor PCBs with no additional layout area-no series resistors or RC filters required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CA-E3/52 | RoHS-compliant but not halogen-free; uses matte tin plating per J-STD-002, same electrical specs and SMB package. | Lacks halogen-free certification; acceptable for commercial-grade non-automotive designs where material compliance is less stringent. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 qualification is unnecessary. |
| SMCJ110CAHM3 | Same VWM/VC ratings but in larger SMC (DO-214AB) package; 1500 W peak pulse power, higher IPPM (7.1 A), RθJA = 50 °C/W. | Requires larger PCB footprint; suited for higher-energy surge environments (e.g., AC mains input stages) where 600 W is insufficient. | Choose only if system-level surge testing exceeds 600 W and board space allows SMC footprint; not drop-in compatible. |
Compared with SMBJ110CA-E3/52, the SMBJ110CAHM3_B/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMCJ110CAHM3, it trades surge capacity for compact SMB packaging-critical for dense sensor or telecom module layouts.
Availability
SMBJ110CAHM3_B/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, automotive body control modules, and consumer sensor hubs requiring stable component supply and halogen-free compliance.
Supply support for SMBJ110CAHM3_B/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in space-constrained, high-surge environments-targeting industrial automation, automotive electronics, and communications infrastructure where consistent clamping and long-term stability are critical.
FAQ
What is the clamping voltage of SMBJ110CAHM3_B/H at its rated peak pulse current?
The SMBJ110CAHM3_B/H exhibits a maximum clamping voltage (VC) of 177 V when subjected to its rated peak pulse current of 3.4 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ110CAHM3_B/H maintains this clamping performance across its full operating temperature range.
Is SMBJ110CAHM3_B/H suitable for automotive applications?
Yes, SMBJ110CAHM3_B/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), making it suitable for automotive body electronics including LIN bus protection, lighting control modules, and sensor interfaces. Its –55 °C to +150 °C operating range and JESD201 Class 2 whisker resistance meet automotive reliability standards without derating.
How does the bidirectional design of SMBJ110CAHM3_B/H affect PCB layout?
The bidirectional nature of SMBJ110CAHM3_B/H eliminates polarity marking-no cathode band or orientation dependency exists. This simplifies PCB layout by allowing placement in either direction across differential or floating nodes, reducing assembly errors and enabling reuse across AC-coupled signal paths like RS-485 or CAN FD physical layers without redesign.
What is the thermal resistance of SMBJ110CAHM3_B/H, and how does it impact power dissipation?
SMBJ110CAHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC standards. At its 5.0 W steady-state power dissipation rating, this results in a 500 °C rise above ambient-thus the device relies on transient (not continuous) power handling. Its 600 W peak rating applies only to short-duration surges, not DC loading.
Can SMBJ110CAHM3_B/H replace unidirectional TVS diodes in existing designs?
No-SMBJ110CAHM3_B/H is strictly bidirectional and cannot substitute for unidirectional TVS diodes (e.g., SMBJ110A) in DC-biased applications like 12 V supply rail protection, where forward conduction must be blocked. Attempting replacement may cause unintended conduction during normal operation. Always verify circuit topology and bias conditions before substituting SMBJ110CAHM3_B/H.
SMBJ110CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- 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)
SMBJ110CAHM3_B/H FAQ
1.How can I place an order for SMBJ110CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110CAHM3_B/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 SMBJ110CAHM3_B/H reliable?
The price and inventory of SMBJ110CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ110CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ110CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110CAHM3_B/H?
SMBJ110CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110CAHM3_B/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 SMBJ110CAHM3_B/H?
For technical support, including SMBJ110CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ110CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ110CAHM3_B/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 SMBJ110CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ110CAHM3_B/H?
All SMBJ110CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110CAHM3_B/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 SMBJ110CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ110CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110CAHM3_B/H Tags
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