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Vishay General Semiconductor - Diodes Division SMCJ110AHM3/H
- Part No.:
- SMCJ110AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110AHM3/H.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,769
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Product details
Overview
SMCJ110AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 110 V standoff voltage (VWM), 177 V maximum clamping voltage (VC) at 8.5 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (10/1000 µs waveform), making it suitable for automotive power supply rail protection against load dump and ISO 7637-2 transients.
For engineers reviewing the SMCJ110AHM3/H datasheet, SMCJ110AHM3/H pinout, SMCJ110AHM3/H application, or SMCJ110AHM3/H equivalent, this device is selected for high-energy transient suppression where low clamping ratio, AEC-Q101 qualification, halogen-free RoHS compliance, and stable thermal performance up to +150 °C junction temperature are required.
Technical Context
The SMCJ110AHM3/H operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to ESD and surge events. Its unidirectional polarity enables cathode-grounded configuration on positive rails, with breakdown voltage (VBR) specified at 122–135 V (IT = 1 mA), ensuring precise triggering above nominal system voltage.
Thermally, it exhibits RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), supporting reliable operation under pulsed stress when mounted on 8.0 mm × 8.0 mm copper pads per terminal. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's normal DC rail. |
| VC @ IPPM | 177 V - Clamped voltage during 8.5 A 10/1000 µs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; determines survivability against high-energy transients like ISO 7637-2 Pulse 5a. |
| IPPM | 8.5 A - Peak pulse current corresponding to VC; used with PCB trace impedance to estimate let-through energy. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; supports automated placement and reflow. |
| Leakage @ VWM | 1.0 µA - Reverse leakage at 110 V; ensures minimal quiescent power loss in always-on systems. |
Pinout & Package
SMCJ110AHM3/H uses the standard SMC (DO-214AB) package: two-terminal, surface-mount, cathode-indicated by a band on the body. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., battery feed); conducts during forward surge only in unidirectional mode. |
| Cathode | Ground reference | Connected to system ground; avalanche conduction occurs between cathode and anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with environmental regulations and end-of-life recycling mandates. |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ≈ 1.40) and minimizes let-through energy during fast transients. |
| 1500 W peak pulse power | Supports protection against severe load-dump events (e.g., 12 V system with 100 V overshoot, 100 ms duration). |
| Fast response time < 1 ns | Clamps before sensitive logic or analog components experience damaging overvoltage stress. |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2b (switching transients). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery line and chassis ground to clamp surges before they reach LDOs, microcontrollers, or CAN transceivers. Use Value: Limits peak voltage to ≤177 V during 8.5 A transients, preventing latch-up or gate oxide damage in downstream semiconductors. | Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives against inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input terminals, coordinated with upstream fuses and filtering capacitors. Use Value: Absorbs up to 1500 W of transient energy without degradation, maintaining system uptime in factory automation environments. |
| Telecom Power Interface | Automotive Sensor Signal Line Protection |
Use Scenario: Shielding PoE-powered network switches and base station power inputs from lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Secondary-level TVS on DC output of offline SMPS, complementing MOV-based primary protection. Use Value: Provides precise clamping (177 V) with low leakage (1.0 µA), avoiding false triggering while ensuring immunity to 10/1000 µs threats. | Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in ADAS modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized TVS at connector entry point, with cathode tied to local sensor ground plane. Use Value: Sub-1 ns response prevents >110 V transients from propagating into precision ADC front-ends or LIN transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VC specs but reduced surge margin. | Suitable for space-constrained consumer or industrial boards where 1500 W rating is not required. | Select when board area is critical and surge threat level is moderate (e.g., IEC 61000-4-5 Level 3). |
| SMCJ110A-M3/57T | Same electrical specs and SMC package, but M3 suffix indicates halogen-free RoHS compliance without AEC-Q101 qualification. | Applicable in commercial/industrial designs lacking automotive qualification requirements. | Choose for cost-sensitive non-automotive applications needing identical surge performance and footprint. |
Compared with SMCJ110AHM3/H, SMAJ110AHE3/A offers smaller size but lower energy handling, while SMCJ110A-M3/57T matches mechanical and electrical performance but lacks automotive qualification-making SMCJ110AHM3/H the sole choice when AEC-Q101 compliance is mandatory.
Availability
SMCJ110AHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial PLC power inputs, and telecom DC power interfaces requiring stable component supply across long production lifecycles.
Supply support for SMCJ110AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping, thermal stability, and qualification rigor are essential.
FAQ
What is the breakdown voltage range of the SMCJ110AHM3/H?
The SMCJ110AHM3/H has a guaranteed breakdown voltage (VBR) range of 122 V to 135 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This ensures reliable triggering above the 110 V standoff voltage while accommodating process variation-critical for predictable protection behavior in automotive power rails where SMCJ110AHM3/H is commonly deployed.
Is the SMCJ110AHM3/H suitable for bidirectional transient suppression?
No, the SMCJ110AHM3/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay offers the SMCJ110CA variant. Using SMCJ110AHM3/H in bidirectional circuits risks failure during negative-going transients, as it conducts only in reverse avalanche mode-not in forward conduction like a bidirectional device.
Does the SMCJ110AHM3/H meet automotive qualification standards?
Yes, the HM3 suffix explicitly denotes AEC-Q101 qualification, verified per stress test requirements including HTGB, HTRB, TCT, and ESD. This makes SMCJ110AHM3/H suitable for under-hood and cabin automotive applications such as body control modules and ADAS power supplies where SMCJ110AHM3/H must withstand temperature cycling and vibration without parametric shift.
What is the thermal resistance of the SMCJ110AHM3/H and how does it affect layout?
The SMCJ110AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended pad layout (0.31″ × 0.31″ copper pads). To maintain safe junction temperatures during repeated surges, designers must provide adequate copper area and avoid thermal isolation-especially important in automotive applications where ambient temperatures exceed 85 °C and SMCJ110AHM3/H may experience multiple transient events.
How does the clamping voltage of SMCJ110AHM3/H compare to its standoff voltage?
The SMCJ110AHM3/H clamps at 177 V (VC) during an 8.5 A 10/1000 µs surge, resulting in a clamping ratio (VC/VWM) of 1.61. This ratio reflects low incremental resistance and efficient energy absorption-key for protecting 12 V or 24 V systems where downstream components have absolute maximum ratings near 200 V. The ratio remains stable across temperature due to the device's 0.107 %/°C VBR temperature coefficient.
SMCJ110AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 8.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ110AHM3/H FAQ
1.How can I place an order for SMCJ110AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110AHM3/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 SMCJ110AHM3/H reliable?
The price and inventory of SMCJ110AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110AHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ110AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110AHM3/H?
SMCJ110AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110AHM3/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 SMCJ110AHM3/H?
For technical support, including SMCJ110AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110AHM3/H requirements.
6.How does Aetrix verify that SMCJ110AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ110AHM3/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 SMCJ110AHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ110AHM3/H?
All SMCJ110AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110AHM3/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 SMCJ110AHM3/H part is unused and in its original packaging.
Return procedure for SMCJ110AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110AHM3/H Tags
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