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Vishay General Semiconductor - Diodes Division SMBJ110CAHM3_B/I
- Part No.:
- SMBJ110CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110CAHM3_B/I.pdf
- Description:
- 600W,110V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ110CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features 110 V standoff voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 177 V at 3.4 A IPPM, and operates across -55 °C to +150 °C junction temperature range - deployed in industrial sensor signal lines and telecom interface protection.
For engineers reviewing the SMBJ110CAHM3_B/I datasheet, SMBJ110CAHM3_B/I pinout, SMBJ110CAHM3_B/I application, or SMBJ110CAHM3_B/I equivalent, key selection criteria include bidirectional clamping behavior, 177 V VC rating at rated surge current, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device functions as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to shunt surge energy away from downstream circuitry. Its bidirectional symmetry ensures identical clamping performance in both polarities, eliminating polarity sensitivity in AC-coupled or floating signal paths.
The SMBJ110CAHM3_B/I exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients. Thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead) supports reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin for protected line. |
| VBR (min/max) | 122 V / 135 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on within spec under standardized test conditions. |
| VC @ IPPM | 177 V at 3.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 600 W - Peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity designs. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with J-STD-020 MSL level 1 reflow profile (260 °C peak). |
| Construction | Halogen-free, RoHS-compliant, AEC-Q101 qualified - Meets automotive-grade reliability requirements and environmental compliance mandates for industrial deployments. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables use in high-ambient environments such as motor drives and base station power supplies. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Acts as cathode during positive transients and anode during negative transients; symmetric conduction path enables AC-line protection without orientation constraints. |
| Cathode | Transient current exit point (bidirectional) | Functions identically to Anode terminal due to symmetrical internal structure; terminals are interchangeable in PCB layout for bidirectional TVS devices. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 surges up to 4 kV (line-earth) without degradation under specified duty cycle (0.01 %). |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking or dry-pack handling, streamlining manufacturing for high-volume industrial assembly. |
| AEC-Q101 qualified (HM3 suffix) | Validates reliability for automotive subsystems including body control modules and infotainment interfaces exposed to load dump and ISO 7637-2 pulses. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term parameter stability under thermal cycling and humidity exposure. |
Applications
| Industrial Sensor Signal Protection | Telecom Interface Surge Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation systems exposed to relay coil flyback and EMI coupling. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal and return lines to limit transient excursions below 177 V. Use Value: Prevents ADC input saturation and op-amp rail-to-rail excursion, maintaining measurement integrity during 1 kV/500 A surge events. |
Use Scenario: Shielding RS-485 transceiver data lines in outdoor network equipment subjected to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Primary TVS element connected between differential pair (A/B) and ground, absorbing common-mode surges. Use Value: Maintains signal integrity by clamping transients before they exceed the ±12 V common-mode range of ISO/IEC 8073-compliant transceivers. |
| Automotive Body Control Module Inputs | AC-DC Power Supply Input Stage |
|
Use Scenario: Safeguarding switch inputs (door lock, window lift) in BCMs against load dump and jump-start induced voltage spikes. IC Role / Device Role / Timing Role: Bidirectional suppressor installed between input pin and chassis ground, triggered within <1 ns of overvoltage onset. Use Value: Eliminates need for external series impedance or filtering, enabling direct connection to microcontroller GPIO pins rated for 5 V logic levels. |
Use Scenario: Front-end protection of offline SMPS rectifier outputs against line surges and capacitor discharge transients. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor terminals to clamp voltage overshoot during hot-plug or brownout recovery. Use Value: Limits peak voltage to 177 V, preventing overvoltage shutdown or dielectric breakdown in 200 V-rated electrolytic capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CAHE3_B/I | Same electrical specs but RoHS-compliant (E3) without halogen-free certification; not AEC-Q101 qualified. | Suitable for commercial-grade industrial controls where automotive qualification is unnecessary. | Select when halogen-free requirement is waived and cost optimization is prioritized over automotive compliance. |
| SMAJ110CAHM3 | Lower PPPM (400 W vs. 600 W); same VWM/VBR/VC; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less thermal margin in high-ambient or high-duty-cycle environments. | Choose only if board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD or low-level inductive spikes. |
Compared with SMBJ110CAHE3_B/I, the SMBJ110CAHM3_B/I adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ110CAHM3, it delivers 50 % higher surge power handling and superior thermal dissipation in the larger SMB package.
Availability
SMBJ110CAHM3_B/I is available at Aetrix Electronics and suitable for industrial sensor protection, telecom interface hardening, automotive body control modules, and AC-DC power supply input stages requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ110CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series was engineered for high-power transient suppression in harsh environments - targeting industrial automation, automotive electronics, and infrastructure equipment where failure resilience is critical.
FAQ
What is the clamping voltage of SMBJ110CAHM3_B/I at its rated peak pulse current?
The SMBJ110CAHM3_B/I has a maximum clamping voltage (VC) of 177 V at its rated peak pulse current (IPPM) of 3.4 A under the standard 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/I maintains this clamping performance bidirectionally, making it suitable for AC-coupled or floating signal paths where polarity cannot be guaranteed.
Is SMBJ110CAHM3_B/I suitable for automotive applications?
Yes, SMBJ110CAHM3_B/I is AEC-Q101 qualified, as indicated by the HM3 suffix, and meets the stress testing requirements for automotive electronic components including temperature cycling, humidity bias, and mechanical shock. It is commonly used in body control modules, infotainment interfaces, and sensor front-ends where protection against load dump (ISO 7637-2) and ESD (ISO 10605) is required. The SMBJ110CAHM3_B/I's halogen-free and RoHS-compliant construction further supports compliance with automotive material restrictions.
How does the SMBJ110CAHM3_B/I differ from unidirectional SMBJ110A variants?
The SMBJ110CAHM3_B/I is bidirectional, meaning it provides symmetrical clamping for both positive and negative transients, with no cathode band marking. In contrast, unidirectional variants like SMBJ110A feature a cathode band and conduct only in reverse bias - they block forward current and require correct polarity orientation. The SMBJ110CAHM3_B/I's bidirectional design eliminates installation errors in AC or differential signal paths and simplifies layout for applications such as RS-485 or CAN bus protection where signal polarity alternates.
What is the thermal resistance of SMBJ110CAHM3_B/I, and how does it affect layout?
The SMBJ110CAHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means effective heat dissipation relies heavily on adequate copper area and via stitching to inner ground planes. For sustained surge duty cycles or high ambient temperatures, increasing pad size or adding thermal vias improves reliability - the SMBJ110CAHM3_B/I's 150 °C max junction temperature rating allows operation in demanding environments when thermally optimized.
Does SMBJ110CAHM3_B/I meet moisture sensitivity level (MSL) requirements for standard SMT reflow?
Yes, SMBJ110CAHM3_B/I meets J-STD-020 MSL Level 1, with a maximum peak reflow temperature of 260 °C. This classification means the device can be processed using standard lead-free reflow profiles without pre-baking or special dry-pack handling. The SMBJ110CAHM3_B/I's glass passivated chip junction and matte tin-plated leads ensure solderability per J-STD-002 and JESD 22-B102, supporting high-yield automated assembly in commercial and automotive production lines.
SMBJ110CAHM3_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:
- -
- 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/I FAQ
1.How can I place an order for SMBJ110CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110CAHM3_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 SMBJ110CAHM3_B/I reliable?
The price and inventory of SMBJ110CAHM3_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 SMBJ110CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ110CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110CAHM3_B/I?
SMBJ110CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110CAHM3_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 SMBJ110CAHM3_B/I?
For technical support, including SMBJ110CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ110CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ110CAHM3_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 SMBJ110CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ110CAHM3_B/I?
All SMBJ110CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110CAHM3_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 SMBJ110CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ110CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110CAHM3_B/I Tags
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