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Vishay General Semiconductor - Diodes Division SMCJ8.0AHM3/I
- Part No.:
- SMCJ8.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.0AHM3/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,304
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Product details
Overview
SMCJ8.0AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage at 110.3 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMCJ8.0AHM3/I datasheet, SMCJ8.0AHM3/I pinout, SMCJ8.0AHM3/I application, or SMCJ8.0AHM3/I equivalent, this device is selected for robust overvoltage protection in automotive-grade industrial power supplies, DC bus lines, and sensor interface circuits where halogen-free RoHS compliance and AEC-Q101 qualification are required.
Technical Context
The SMCJ8.0AHM3/I operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its breakdown range of 8.89–9.83 V at 10 mA test current. Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it delivers thermal performance with RθJA = 75 °C/W and junction temperature range of –55 °C to +150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR Min/Max | 8.89 V / 9.83 V at 10 mA - Confirmed breakdown threshold for reliable turn-on margin |
| VC @ IPPM | 13.6 V at 110.3 A - Clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capability with standardized 10/1000 μs waveform |
| ID @ VWM | 50 μA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ Range | –55 °C to +150 °C - Supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
SMCJ8.0AHM3/I uses the SMC (DO-214AB) package: a surface-mount, molded plastic case with two terminals. Polarity is marked by a cathode band; the banded end is the cathode (K), non-banded end is anode (A). Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive terminal in forward bias; connected to protected line's lower-potential side | Provides current return path during clamping; must be routed to ground or common reference |
| Cathode (K) | Marked end; reverse-biased terminal during normal operation | Connected to the line being protected; conducts only during overvoltage events above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for automotive and industrial PCBs without compromising surge robustness |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during transients, protecting downstream MOSFETs and ICs with tight VDS or VCC margins |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable electrical characteristics and long-term reliability under repeated surge stress |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
Use Scenario: Protection of 12 V battery-fed ECUs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and regulator input to clamp transients up to ISO 7637-2 Pulse 5a. Use Value: With 13.6 V clamping and 1500 W rating, SMCJ8.0AHM3/I prevents regulator latch-up and MOSFET failure during 120 V/50 ms load dump events. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting transients to ground before reaching op-amp or ADC input. Use Value: 50 μA leakage at 8.0 V ensures no measurable offset error in precision 24-bit sensor front-ends while clamping ±8 kV contact ESD per IEC 61000-4-2. |
| DC Motor Drive Bus | Telecom Power Supply Input |
Use Scenario: Suppressing inductive kickback from brushed DC motors in factory automation actuators. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge supply rails to absorb flyback energy during PWM switching. Use Value: 110.3 A peak pulse current capacity handles repetitive 100 A inductive spikes without degradation, supported by 150 °C max junction temperature. | Use Scenario: Primary-side surge protection on 48 V telecom rectifier inputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense in series with MOVs or GDTs, providing fast-response clamping before slower devices activate. Use Value: Sub-1 ns response time and 13.6 V clamping ensure sensitive DC-DC controllers remain within safe operating area during combined 10/700 μs telecom surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A-M3/867 | Lower PPPM (400 W), smaller SMA package, same VWM and VBR range | Not suitable for 1500 W surge events; limited to low-energy signal-line protection | Select only for space-constrained, low-power interfaces where full SMCJ-level robustness is unnecessary |
| SMCJ8.0AHE3_A/I | Same electrical specs and SMC package, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified) | Lacks automotive qualification and halogen-free certification; unsuitable for Tier-1 automotive BOMs | Choose for cost-sensitive industrial applications where AEC-Q101 and halogen-free are not mandated |
Compared with SMAJ8.0A-M3/867 and SMCJ8.0AHE3_A/I, the SMCJ8.0AHM3/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction-making it the only option among the three approved for safety-critical automotive power domains.
Availability
SMCJ8.0AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, DC motor drive bus, and telecom power supply input applications requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ8.0AHM3/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, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where consistent clamping performance and qualification rigor are mandatory.
FAQ
What is the breakdown voltage range of the SMCJ8.0AHM3/I?
The SMCJ8.0AHM3/I has a guaranteed breakdown voltage (VBR) range of 8.89 V to 9.83 V at 10 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures predictable turn-on behavior across manufacturing lots and temperature extremes, directly supporting design margin calculations for protected circuits. The SMCJ8.0AHM3/I maintains this specification under all rated operating conditions without derating.
Is the SMCJ8.0AHM3/I suitable for automotive applications?
Yes, the SMCJ8.0AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction-both required for automotive electronics. It meets MSL Level 1 and operates from –55 °C to +150 °C, enabling use in engine control modules, body control units, and ADAS power rails. The SMCJ8.0AHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix for transient suppression.
What does the "HM3" suffix mean in SMCJ8.0AHM3/I?
The "HM3" suffix in SMCJ8.0AHM3/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Unlike base "M3" parts, HM3 devices undergo additional automotive reliability testing and material verification. The SMCJ8.0AHM3/I's HM3 designation is confirmed in Vishay's ordering information table and applies to both electrical performance and mechanical compliance-no interpretation or cross-reference needed.
How does the clamping voltage of SMCJ8.0AHM3/I compare to its stand-off voltage?
The SMCJ8.0AHM3/I has a stand-off voltage (VWM) of 8.0 V and a maximum clamping voltage (VC) of 13.6 V at 110.3 A, yielding a clamping ratio of ~1.70. This ratio reflects real-world surge suppression performance: during a 1500 W transient, the SMCJ8.0AHM3/I limits voltage seen by downstream components to ≤13.6 V, well below typical 16–20 V absolute maximum ratings of protected ICs and MOSFETs.
Can SMCJ8.0AHM3/I be used in bidirectional configurations?
No, the SMCJ8.0AHM3/I is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and presence of cathode band marking. Bidirectional variants such as SMCJ8.0CA exist but differ in internal structure, leakage profile, and clamping symmetry. Using SMCJ8.0AHM3/I in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or circuit. Always match suffix and polarity marking to system requirements.
SMCJ8.0AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 110.3A
- 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)
SMCJ8.0AHM3/I FAQ
1.How can I place an order for SMCJ8.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.0AHM3/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 SMCJ8.0AHM3/I reliable?
The price and inventory of SMCJ8.0AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ8.0AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ8.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.0AHM3/I?
SMCJ8.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.0AHM3/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 SMCJ8.0AHM3/I?
For technical support, including SMCJ8.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.0AHM3/I requirements.
6.How does Aetrix verify that SMCJ8.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ8.0AHM3/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 SMCJ8.0AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ8.0AHM3/I?
All SMCJ8.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.0AHM3/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 SMCJ8.0AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ8.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.0AHM3/I Tags
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