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Vishay General Semiconductor - Diodes Division SMCJ110AHM3_A/I
- Part No.:
- SMCJ110AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110AHM3_A/I.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,043
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Product details
Overview
SMCJ110AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 110 V standoff voltage (VWM), 177 V clamping voltage (VC) at 8.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It protects MOSFETs, ICs, and sensor signal lines in automotive power systems and industrial motor drives.
For engineers reviewing the SMCJ110AHM3_A/I datasheet, SMCJ110AHM3_A/I pinout, SMCJ110AHM3_A/I application, or SMCJ110AHM3_A/I equivalent, this part delivers AEC-Q101 qualified surge immunity, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for under-hood automotive electronics and high-reliability industrial control designs.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage (VBR) range of 122–135 V at 1 mA test current, enabling precise overvoltage thresholding before conduction. Its glass-passivated junction ensures stable avalanche behavior and fast response time (<1 ns) to transients induced by inductive load switching or ESD events.
Thermally, it features RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = +150 °C. The matte tin-plated leads meet J-STD-002 solderability standards and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 110 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe operating margin below clamping onset |
| VBR (Breakdown Voltage) | 122–135 V at 1 mA - precise avalanche initiation range ensuring consistent turn-on across temperature and unit variation |
| VC (Clamping Voltage) | 177 V at IPPM = 8.5 A (10/1000 μs waveform) - limits downstream voltage stress during surge, protecting 120 V-rated components |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy transients (e.g., ISO 7637-2 Pulse 5a) without failure when mounted on 8 mm × 8 mm copper pads |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - negligible standby current, preserving low-power sensor node battery life and signal integrity |
| TJ max. | +150 °C - enables deployment in engine control units, power inverters, and other high-temperature automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink terminal | Connects to protected line; conducts transient energy to ground when V > VBR; polarity-critical for unidirectional operation |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop; must maintain low-inductance path for effective surge diversion |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Withstands severe automotive load-dump surges (ISO 7637-2 Pulse 5a) without degradation when properly mounted |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive under-hood applications including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and across operating temperature range (−55 °C to +150 °C) |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, relay bounce), improving protection margin |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without pre-baking or special handling |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive DC Bus Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply rails from load-dump transients generated during alternator disconnection. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 12 V rail and chassis ground to clamp spikes up to 120 V. Use Value: Limits voltage to ≤177 V during 1500 W surges, preventing latch-up or gate oxide damage in 120 V-tolerant power management ICs. |
Use Scenario: Shields gate drivers and current-sense amplifiers from switching-induced voltage spikes on 100–200 V DC bus lines. IC Role / Device Role / Timing Role: Fast-response TVS connected across bus-to-ground to absorb inductive kickback from IGBT/MOSFET turn-off. Use Value: Clamps 10/1000 μs transients within 1 ns, maintaining <180 V stress on 200 V-rated SiC gate drivers and isolated amplifiers. |
| Telecom Power Supply Input Stage | Automotive ADAS Camera Module |
Use Scenario: Guards AC/DC front-end rectifier and PFC controller against lightning-induced surges on 90–130 VAC input lines. IC Role / Device Role / Timing Role: Primary-level TVS placed after bridge rectifier but before bulk capacitor to limit surge energy entering regulation stage. Use Value: Absorbs 1500 W pulses without thermal runaway, enabling use of smaller downstream MOVs and reducing BOM cost. |
Use Scenario: Safeguards image sensor interface lines (e.g., MIPI CSI-2) and power rails from ESD and cable discharge events in rear-view cameras. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on 12 V power input and shielded video lines to prevent pixel corruption or reset. Use Value: 1 μA leakage at 110 V preserves low-noise analog performance; AEC-Q101 qualification ensures field reliability in vibration-prone mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110AHE3/A | Lower PPPM (400 W), SMA package (DO-214AC), same VWM/VBR range | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD); not rated for ISO 7637-2 load dump | Select when space-constrained layouts require smaller footprint and surge energy is limited to ≤400 W |
| SMCJ110AHE3_A/I | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101), E3 suffix | Lacks automotive qualification; not approved for safety-critical vehicle subsystems | Use in industrial or consumer equipment where AEC-Q101 is not mandated and cost optimization is prioritized |
Compared with SMCJ110AHM3_A/I, SMAJ110AHE3/A offers reduced surge capacity in a smaller package, while SMCJ110AHE3_A/I provides identical protection performance without automotive qualification - making the HM3 variant essential for Tier 1 automotive supply chain compliance.
Availability
SMCJ110AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive systems, telecom power supplies, and ADAS camera modules requiring stable component supply and AEC-Q101 traceability.
Supply support for SMCJ110AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding robust, AEC-Q101 qualified surge protection.
FAQ
What is the clamping voltage of SMCJ110AHM3_A/I at its rated peak pulse current?
The SMCJ110AHM3_A/I has a maximum clamping voltage (VC) of 177 V at 8.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per JEDEC guidelines and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ110AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMCJ110AHM3_A/I suitable for bidirectional transient protection?
No, SMCJ110AHM3_A/I is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only when reverse-biased beyond its breakdown voltage and blocks forward current like a standard diode. For bidirectional protection - such as AC line or data bus applications - the SMCJ110CAHM3_A/I variant must be used. The SMCJ110AHM3_A/I is intended for DC power rail and signal line protection where polarity is fixed.
What does the "HM3" suffix signify in SMCJ110AHM3_A/I?
The "HM3" suffix in SMCJ110AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" indicates AEC-Q101 compliance, "M3" specifies halogen-free molding compound and matte tin plating meeting JESD201 Class 2 whisker resistance. This distinguishes it from commercial-grade variants like SMCJ110AE3_A/I and confirms suitability for automotive under-hood applications requiring extended temperature operation and long-term reliability validation.
How does the thermal resistance of SMCJ110AHM3_A/I affect PCB layout?
The SMCJ110AHM3_A/I has RθJA = 75 °C/W and RθJL = 15 °C/W, meaning effective heat dissipation depends heavily on copper pad area and via placement. To maintain junction temperature below 150 °C during repetitive surges, the datasheet specifies minimum 8.0 mm × 8.0 mm copper pads per terminal. Reducing pad size increases thermal resistance, risking premature thermal failure. Layouts for SMCJ110AHM3_A/I must therefore allocate adequate copper area and consider thermal vias to inner ground planes - especially in automotive ECUs where ambient temperatures exceed 100 °C.
Can SMCJ110AHM3_A/I replace SMCJ100AHE3_A/I in an existing design?
SMCJ110AHM3_A/I is not a direct replacement for SMCJ100AHE3_A/I due to higher VWM (110 V vs. 100 V) and VBR (122–135 V vs. 111–123 V), resulting in delayed clamping onset. While both share the same SMC package and 1500 W rating, substituting SMCJ110AHM3_A/I may allow transient voltages to exceed 100 V before clamping begins - potentially damaging 100 V-rated downstream components. Verify system overvoltage tolerance and surge profile before substitution; the SMCJ110AHM3_A/I is best applied where 110 V nominal rails or higher clamping margins are required.
SMCJ110AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 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_A/I FAQ
1.How can I place an order for SMCJ110AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110AHM3_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 SMCJ110AHM3_A/I reliable?
The price and inventory of SMCJ110AHM3_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 SMCJ110AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ110AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110AHM3_A/I?
SMCJ110AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110AHM3_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 SMCJ110AHM3_A/I?
For technical support, including SMCJ110AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ110AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ110AHM3_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 SMCJ110AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ110AHM3_A/I?
All SMCJ110AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110AHM3_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 SMCJ110AHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ110AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110AHM3_A/I Tags
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Diodes Incorporated
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