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Vishay General Semiconductor - Diodes Division SMBJ110CAHM3/H
- Part No.:
- SMBJ110CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110CAHM3/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,477
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Product details
Overview
SMBJ110CAHM3/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 110 V standoff voltage (VWM), 122–135 V breakdown range (VBR at 1 mA), 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBJ110CAHM3/H datasheet, SMBJ110CAHM3/H pinout, SMBJ110CAHM3/H application, or SMBJ110CAHM3/H equivalent, this device is selected for robust bidirectional surge protection in automotive-grade commercial designs where halogen-free, RoHS-compliant, AEC-Q101-qualified components are required without layout modification to standard SMB footprints.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 20 °C/W junction-to-lead thermal resistance supports reliable power dissipation under repetitive surge conditions.
The device complies with MSL Level 1 per J-STD-020 and withstands peak reflow temperatures up to 260 °C. Its 150 °C maximum junction temperature and -55 °C to +150 °C operating range support deployment in under-hood automotive modules and industrial control cabinets exposed to wide thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 100 V nominal DC bus protection. |
| VBR (min/max) | 122 V / 135 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events above system rail. |
| VC @ IPPM | 177 V at 3.4 A - Clamped voltage during 600 W transient; limits downstream IC stress to <180 V under worst-case 10/1000 µs surge. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity testing. |
| IPPM | 3.4 A - Peak pulse current corresponding to 600 W clamping; determines minimum trace width and PCB copper area needed for thermal management. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in high-ambient environments such as motor drive enclosures or telecom base stations. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry path (negative half-cycle) | Conducts surge current when voltage at this terminal falls >VBR below cathode; symmetrical with cathode for bidirectional operation. |
| Cathode | Transient current entry path (positive half-cycle) | Conducts surge current when voltage at this terminal exceeds VBR above anode; functionally identical to anode in CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus stubs) without external polarity routing. |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge test requirements for industrial equipment ports with minimal derating up to 125 °C ambient. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect reliability and extended temperature cycling. |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and JEDEC JS709C material restrictions; eliminates brominated flame retardants in molding compound. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT line logistics for high-volume manufacturing. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIO and LIN transceiver pins from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to limit transients to <180 V before reaching protected ICs. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces during ISO 7637-2 Pulse 5a events without adding series impedance. |
Use Scenario: Shields 4–20 mA current loop receiver circuitry from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Fast-response shunt protector across input terminals, activated within <1 ns to divert >3 A surge current away from precision op-amps. Use Value: Maintains analog measurement integrity by limiting voltage excursion to ≤177 V during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Power Supply DC Output | Consumer Appliance Motor Driver Board |
Use Scenario: Suppresses back-EMF spikes from relay coils and fan motors connected to regulated 48 V telecom power rails. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kick energy before it propagates into DC-DC converter feedback networks. Use Value: Eliminates need for snubber RC networks, reducing BOM count while maintaining output regulation stability under dynamic load switching. |
Use Scenario: Guards H-bridge gate drivers and MCU reset lines against commutation noise in washing machine and HVAC blower inverters. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp minimizing signal distortion on PWM-controlled motor phase lines. Use Value: Enables use of cost-effective 5 V microcontrollers without external level-shifting, as clamping occurs before logic-level thresholds are exceeded. |
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/H | Same electrical specs, but RoHS-compliant without halogen-free certification; uses standard SnPb-free matte tin plating. | Approved for commercial and industrial use, but not certified for automotive AEC-Q101 applications. | Select when halogen-free compliance is not mandated and cost optimization is prioritized over automotive qualification. |
| SMAJ110CAHM3 | Lower 400 W peak pulse power rating; same VWM/VBR/VC, but reduced IPPM (2.2 A) and higher RθJA (140 °C/W). | Suitable only for lower-energy surge environments (e.g., Class B IEC 61000-4-5) and space-constrained layouts where SMB footprint is unavailable. | Choose when board area is limited and surge threat level is moderate, accepting 33% lower power handling than SMBJ110CAHM3/H. |
Compared with SMBJ110CAHE3/H, the SMBJ110CAHM3/H adds halogen-free assurance for stricter environmental compliance; versus SMAJ110CAHM3, it delivers 50% higher surge energy absorption and superior thermal performance in the same functional role - making it optimal for AEC-Q101 automotive and high-reliability industrial deployments.
Availability
SMBJ110CAHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom power supply outputs, and consumer appliance motor control boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ110CAHM3/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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 qualification, and precise clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in SMBJ110CAHM3/H?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ110CAHM3/H provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, it has no cathode marking and functions identically in either orientation - ideal for protecting AC-coupled or floating signal paths such as RS-485 buses or transformer-isolated power supplies where polarity cannot be guaranteed.
Is SMBJ110CAHM3/H suitable for automotive applications?
Yes, SMBJ110CAHM3/H is AEC-Q101 qualified (indicated by the "HM3" suffix), meaning it has passed stress tests for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life required for automotive electronics. It is approved for use in body control modules, infotainment power supplies, and sensor interface circuits where reliability under vibration and thermal extremes is critical - confirmed by Vishay's qualification report referenced in document 88392.
How does the clamping voltage of SMBJ110CAHM3/H compare to its standoff voltage?
SMBJ110CAHM3/H has a 110 V standoff voltage (VWM) and a maximum clamping voltage (VC) of 177 V at 3.4 A. This 67 V differential ensures sufficient margin between normal operation and protective conduction, preventing false triggering during line transients while still limiting downstream voltage stress to safe levels for 150 V-rated components - a key design advantage over lower-voltage TVS devices that may clamp too early or too late.
What is the significance of the "HM3" packaging code in SMBJ110CAHM3/H?
The "HM3" suffix in SMBJ110CAHM3/H specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It indicates the device uses bromine- and chlorine-free flame-retardant molding compound, matte tin-plated leads compliant with J-STD-002, and has passed whisker testing per JESD 201 Class 2 - distinguishing it from "HE3" (RoHS only) and "E3" (commercial RoHS) variants, and confirming suitability for environmentally regulated automotive and industrial end markets.
Can SMBJ110CAHM3/H replace SMBJ110A in an existing design?
No - SMBJ110CAHM3/H is bidirectional, while SMBJ110A is unidirectional with a defined cathode band. Substituting them requires verifying circuit topology: SMBJ110CAHM3/H may be used only where polarity-independent clamping is acceptable (e.g., across differential pairs or AC lines); using it in place of SMBJ110A on a DC rail with defined ground reference could result in unintended conduction during normal operation. Always validate with schematic review and transient simulation before replacement.
SMBJ110CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SMBJ110CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110CAHM3/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/H reliable?
The price and inventory of SMBJ110CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMBJ110CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110CAHM3/H?
SMBJ110CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110CAHM3/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/H?
For technical support, including SMBJ110CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110CAHM3/H requirements.
6.How does Aetrix verify that SMBJ110CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ110CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMBJ110CAHM3/H?
All SMBJ110CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMBJ110CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110CAHM3/H Tags
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