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Vishay General Semiconductor - Diodes Division SMBJ110AHE3_B/I
- Part No.:
- SMBJ110AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110AHE3_B/I.pdf
- Description:
- 600W,110V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ110AHE3_B/I from Vishay General Semiconductor is a unidirectional 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), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom infrastructure.
For engineers reviewing the SMBJ110AHE3_B/I datasheet, SMBJ110AHE3_B/I pinout, SMBJ110AHE3_B/I application, or SMBJ110AHE3_B/I equivalent, key selection criteria include clamping voltage margin vs. protected device's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity confirmation for DC-biased lines, and AEC-Q101 qualification status for automotive-grade variants.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its low incremental surge resistance (typical <0.5 Ω) ensures minimal voltage overshoot during transient events, while its fast response time (<1.0 ps) enables suppression of ESD and lightning-induced surges before downstream components are stressed.
The SMBJ110AHE3_B/I is rated for 150 °C maximum junction temperature and exhibits a +0.057 %/°C temperature coefficient of VBR - confirming stable breakdown behavior across industrial temperature ranges. Its 100 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad design (0.2" × 0.2") to sustain repetitive 600 W pulses at ≤0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 110 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 122–135 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC (Clamping Voltage) | 177 V at IPPM = 3.4 A - Peak voltage seen by protected circuit during 10/1000 µs transient; must stay below downstream IC's absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible standby power loss and minimal impact on high-impedance sensor bias networks. |
| TJ max. | 150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without forced cooling. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TC, and HAST; suffix HE3 denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, MSL Level 1, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; forms current path during transient clamp event. |
| Cathode | High-side input terminal | Connected to protected line (e.g., 110 V rail); band-marked end; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Level 4 surge immunity testing for industrial equipment. |
| 177 V clamping voltage at 3.4 A | Provides ≥10 V margin below typical 180 V absolute max rating of 120 V-rated power MOSFETs and controllers. |
| AEC-Q101 qualified (HE3 suffix) | Enables drop-in use in automotive body control modules, ADAS power rails, and infotainment supply protection without requalification. |
| Low profile SMB package | Reduces board space vs. SMA/SMB alternatives; compatible with standard pick-and-place equipment and reflow profiles up to 260 °C peak. |
| 1.0 µA max reverse leakage at VWM | Prevents measurable current draw in always-on 110 V auxiliary supplies, preserving battery backup runtime in telecom systems. |
Applications
| Industrial Power Supply Protection | Telecom DC Feeder Line Protection |
|---|---|
|
Use Scenario: Protecting primary-side switching MOSFETs and controller ICs in 110 VAC-derived offline SMPS against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed across bulk capacitor or MOSFET drain-source. Use Value: Limits transient voltage to 177 V, preventing avalanche failure of 200 V-rated MOSFETs and ensuring >20,000-cycle surge endurance. |
Use Scenario: Safeguarding PoE-powered Ethernet switches and remote radio units connected to 110 V DC feeder lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage protector on DC input rail upstream of DC-DC converters and hot-swap controllers. Use Value: Clamps 6 kV/3 kA IEC 61000-4-5 surges within 1 ns, maintaining downstream converter uptime and avoiding latch-up in PMICs. |
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|
Use Scenario: Securing 12 V–110 V hybrid power domains in BCMs handling headlight drivers, window lift motors, and HVAC actuators. IC Role / Device Role / Timing Role: AEC-Q101-qualified TVS on switched 110 V supply rails feeding high-current drivers. Use Value: Survives 1000+ thermal cycles (-40 °C to +125 °C) and meets ISO 7637-2 pulse 5a/b requirements without degradation. |
Use Scenario: Shielding analog front-ends of pressure/temperature sensors in factory automation PLCs interfacing with 110 V solenoid-controlled pneumatic systems. IC Role / Device Role / Timing Role: Input-stage transient suppressor on sensor excitation or return line adjacent to high-noise inductive loads. Use Value: Prevents 100 V/ms dv/dt transients from coupling into 24-bit ADC references, eliminating measurement offset drift during actuator switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110AHM3_B/I | Halogen-free, RoHS-compliant, AEC-Q101 qualified - identical electrical specs but different material composition. | Required where halogen-free compliance is mandated (e.g., EU public transport, medical devices). | Select when environmental compliance exceeds standard RoHS; no layout or performance change needed. |
| SMCJ110AHE3_A/I | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM rating; higher thermal mass. | Better suited for high-repetition surge environments (e.g., motor drive inverters) requiring extended thermal endurance. | Choose when board space allows and surge repetition rate exceeds 0.01%; provides 2.5× peak power headroom. |
Compared with SMBJ110AHE3_B/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ110AHE3_A/I delivers higher surge energy handling in a larger footprint - enabling trade-offs between PCB area, environmental compliance, and thermal robustness.
Availability
SMBJ110AHE3_B/I is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC feeder protection, and automotive body control modules requiring stable component supply with AEC-Q101 qualification and RoHS compliance.
Supply support for SMBJ110AHE3_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, power efficiency, and automotive-grade validation.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where compact size, high surge capability, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SMBJ110AHE3_B/I at its rated peak pulse current?
The SMBJ110AHE3_B/I has a maximum clamping voltage (VC) of 177 V at its specified peak pulse current (IPPM) of 3.4 A under a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry will not experience voltages exceeding 177 V during standardized surge events - critical for ensuring compatibility with 200 V-rated power semiconductors. The SMBJ110AHE3_B/I maintains this clamping performance across its full operating temperature range.
Is SMBJ110AHE3_B/I suitable for automotive applications?
Yes, SMBJ110AHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and Vishay's official documentation. It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and humidity testing - making it appropriate for under-hood and cabin applications such as body control modules, lighting drivers, and HVAC power stages. The SMBJ110AHE3_B/I meets automotive reliability requirements without derating for temperature or surge repetition rate.
What does the "B/I" suffix indicate in SMBJ110AHE3_B/I?
The "B/I" suffix in SMBJ110AHE3_B/I specifies packaging and reel configuration: "B" denotes the revision level (document revision B), and "I" indicates 13-inch diameter plastic tape-and-reel packaging with a base quantity of 3200 units. This format supports high-volume automated assembly and is compatible with standard SMT feeders. The SMBJ110AHE3_B/I is distinct from the "B/H" variant (7-inch reel, 750 units), and both share identical electrical and thermal specifications.
How does SMBJ110AHE3_B/I compare to bidirectional TVS diodes like SMBJ110CA?
The SMBJ110AHE3_B/I is unidirectional and intended for DC-biased lines where polarity is fixed - it conducts only during reverse overvoltage events and blocks forward current. In contrast, SMBJ110CA is bidirectional and symmetrical, suitable for AC lines or data signals with no defined polarity. Using SMBJ110AHE3_B/I on an AC line would cause forward conduction and failure; the SMBJ110AHE3_B/I must be applied only where cathode connects to the higher-potential side of a DC rail.
What PCB layout guidance applies to SMBJ110AHE3_B/I for optimal thermal performance?
For optimal thermal performance, SMBJ110AHE3_B/I should be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, per Vishay's datasheet. These pads reduce thermal resistance (RθJA = 100 °C/W) and prevent junction overheating during repetitive 600 W surges. Avoid narrow traces or thermal reliefs on anode/cathode connections; use internal ground/power planes if possible. The SMBJ110AHE3_B/I thermal design must account for ambient temperature derating above 25 °C per Figure 2 in Document 88392.
SMBJ110AHE3_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):
- 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)
SMBJ110AHE3_B/I FAQ
1.How can I place an order for SMBJ110AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110AHE3_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 SMBJ110AHE3_B/I reliable?
The price and inventory of SMBJ110AHE3_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 SMBJ110AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ110AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110AHE3_B/I?
SMBJ110AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110AHE3_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 SMBJ110AHE3_B/I?
For technical support, including SMBJ110AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ110AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ110AHE3_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 SMBJ110AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ110AHE3_B/I?
All SMBJ110AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110AHE3_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 SMBJ110AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ110AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110AHE3_B/I Tags
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