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Vishay General Semiconductor - Diodes Division SMBJ110AHE3_A/I
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- Part No.:
- SMBJ110AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110AHE3_A/I.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,266
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Product details
Overview
SMBJ110AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 capability with 10/1000 µs waveform.
For engineers reviewing the SMBJ110AHE3_A/I datasheet, SMBJ110AHE3_A/I pinout, SMBJ110AHE3_A/I application, or SMBJ110AHE3_A/I equivalent, this device is selected for robust overvoltage protection in automotive power rails, industrial sensor interfaces, and telecom line-level circuits where AEC-Q101 qualification, low clamping ratio, and stable thermal performance up to 150 °C junction temperature are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for fast response (<1 ns) and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) support reliable operation under repetitive surge conditions when mounted on 5.0 mm × 5.0 mm copper pads.
The SMBJ110AHE3_A/I meets MSL level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and is AEC-Q101 qualified - confirmed by the "HE3" suffix and revision code "A/I". It exhibits a +0.107 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across its -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 110 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 122–135 V at 1 mA - Confirmed minimum/maximum reverse breakdown threshold; ensures consistent turn-on behavior across production lots. |
| VC (Clamping Voltage) | 177 V at IPPM = 3.4 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines actual stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 µs transient; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports deployment in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads; polarity indicated by cathode band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge events (e.g., reverse battery protection). |
| Cathode | Clamping reference terminal | Marked with band; connected to protected line (e.g., 110 V rail); initiates avalanche breakdown when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine control, ADAS, and body electronics. |
| 600 W peak pulse power | Enables single-device protection against high-energy transients per IEC 61000-4-5 (4 kV/2 Ω coupling network) without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during clamping - critical for safeguarding 120 V-rated MOSFETs and gate drivers in DC-DC converters. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility at peak temperatures up to 260 °C - eliminates baking requirements in high-volume SMT lines. |
| Glass passivated junction | Provides stable leakage and breakdown characteristics over time and temperature - essential for long-life industrial sensor modules. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 110 V auxiliary power bus in commercial vehicle infotainment systems against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and DC-DC regulator input stage. Use Value: Limits transient voltage to ≤177 V during 35 V/100 ms load dump events, preventing regulator latch-up and preserving system uptime. |
Use Scenario: Shielding 4–20 mA current loop inputs in PLC analog I/O modules from ESD and field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp protector on loop supply line, upstream of precision op-amp input stage. Use Value: Maintains <1.0 µA leakage at 110 V, avoiding offset error in µA-level current measurement while clamping 1 kV/500 Ω transients. |
| Telecom Line-Level Surge Suppression | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding RS-485 transceiver power pins in outdoor base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC line feeding isolated data interface ICs. Use Value: Responds in <1 ns to 10/1000 µs surges, limiting clamped voltage to 177 V and enabling compliance with ITU-T K.21 basic protection level. |
Use Scenario: Protecting high-side gate driver IC supply pins in 3-phase inverter drives subjected to shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-acting clamp on bootstrap capacitor charging rail (110 V nominal). Use Value: Withstands 100 A non-repetitive forward surge (IFSM), surviving repeated gate drive fault events without degradation. |
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_A/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | Required where halogen-free compliance (IEC 61249-2-21) is mandated for PCB assembly or end-product environmental certification. | Select SMBJ110AHM3_A/I when RoHS + halogen-free material declaration is contractually required; no design or layout changes needed. |
| SMCJ110AHE3_A/I | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; 1500 W PPPM rating and higher IPPM (6.8 A). | Used where higher surge energy handling is needed (e.g., primary AC input stages), but requires larger board area and different pad layout. | Choose SMCJ110AHE3_A/I only if 600 W is insufficient and board space allows SMC footprint; not a drop-in replacement due to package size difference. |
Compared with SMBJ110AHE3_A/I, the SMBJ110AHM3_A/I offers identical protection performance with halogen-free construction, while the SMCJ110AHE3_A/I delivers 2.5× higher surge power at the cost of increased footprint - making SMBJ110AHE3_A/I optimal for space-constrained AEC-Q101 designs requiring precise 600 W clamping.
Availability
SMBJ110AHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line-level surge suppression requiring stable component supply, AEC-Q101 traceability, and full RoHS compliance.
Supply support for SMBJ110AHE3_A/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 qualification.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial automation, and infrastructure applications where robustness, consistency, and long-term supply stability are critical.
FAQ
What is the clamping voltage of SMBJ110AHE3_A/I at its rated peak pulse current?
The SMBJ110AHE3_A/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 standard test conditions and defines the upper voltage limit imposed on the protected circuit during surge events - a key parameter for ensuring downstream ICs remain within their absolute maximum ratings. The SMBJ110AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ110AHE3_A/I suitable for automotive applications?
Yes, SMBJ110AHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix and revision code "A/I", and is explicitly rated for automotive use in engine control units, body electronics, and infotainment systems. It meets stringent requirements for temperature cycling, humidity bias, and mechanical shock, and operates reliably from -55 °C to +150 °C junction temperature - making SMBJ110AHE3_A/I appropriate for under-hood and cabin-mounted automotive subsystems.
What does the "HE3" suffix indicate in SMBJ110AHE3_A/I?
The "HE3" suffix in SMBJ110AHE3_A/I denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade "E3" variants. The "H" confirms automotive qualification, while "E3" specifies lead-free, matte tin-plated terminations compliant with JEDEC J-STD-020 MSL Level 1. The trailing "A/I" indicates manufacturing revision level and tape-and-reel packaging format (13" reel, 3200 units), ensuring full traceability and process control for SMBJ110AHE3_A/I.
How does SMBJ110AHE3_A/I differ from bidirectional TVS diodes like SMBJ110CA?
SMBJ110AHE3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas SMBJ110CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SMBJ110AHE3_A/I provides lower leakage (<1.0 µA at 110 V) and is preferred for DC power rail protection, while SMBJ110CA suits AC signal lines or differential buses. Their VBR and VC values differ accordingly - SMBJ110AHE3_A/I is not interchangeable with SMBJ110CA without circuit redesign.
What is the thermal resistance of SMBJ110AHE3_A/I, and how does it affect layout?
SMBJ110AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. To achieve rated 600 W pulse power, PCB layout must provide adequate copper area and thermal vias - reducing RθJA improves sustained surge handling. Insufficient copper will cause premature thermal derating, so SMBJ110AHE3_A/I layout must follow Vishay's recommended pad dimensions to maintain specification compliance.
SMBJ110AHE3_A/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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ110AHE3_A/I FAQ
1.How can I place an order for SMBJ110AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110AHE3_A/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_A/I reliable?
The price and inventory of SMBJ110AHE3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ110AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110AHE3_A/I?
SMBJ110AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110AHE3_A/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_A/I?
For technical support, including SMBJ110AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ110AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ110AHE3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ110AHE3_A/I?
All SMBJ110AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110AHE3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMBJ110AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110AHE3_A/I Tags
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