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Vishay General Semiconductor - Diodes Division SMCJ6.5AHM3/I
- Part No.:
- SMCJ6.5AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5AHM3/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,220
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Product details
Overview
SMCJ6.5AHM3/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 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 μs), 133.9 A peak pulse current (IPPM), and 11.2 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the SMCJ6.5AHM3/I datasheet, SMCJ6.5AHM3/I pinout, SMCJ6.5AHM3/I application, or SMCJ6.5AHM3/I equivalent, key selection criteria include unidirectional polarity, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector: under normal bias it presents high impedance (>1 MΩ leakage at 6.5 V), then avalanches within picoseconds when transient voltage exceeds VBR to clamp downstream circuitry at ≤11.2 V. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for single-polarity DC rail protection, SMCJ6.5AHM3/I supports surge immunity per IEC 61000-4-5 (10/1000 μs waveform) and meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance standards. The HM3 suffix confirms halogen-free, RoHS-compliant, commercial-grade construction with AEC-Q101 qualification available via HE3/HM3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - defines reliable avalanche initiation window for design margining |
| VC @ IPPM | 11.2 V at 133.9 A - clamping voltage during 1500 W transient, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capability for 10/1000 μs surges per IEC 61000-4-5 |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction, clamps reverse transients |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ6.5AHM3/I uses the SMC (DO-214AB) package: a 2-terminal surface-mount device with cathode identified by a molded band on the body. Terminals are matte tin-plated leads, compatible with J-STD-002 soldering and JESD22-B102 wetting tests.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment |
| Glass-passivated junction | Ensures stable VBR tolerance, long-term reliability, and resistance to humidity-induced degradation |
| AEC-Q101 qualified option | HM3 suffix indicates halogen-free, RoHS-compliant construction with qualification path for automotive use |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without preconditioning |
| 1500 W surge capability | Provides robust protection against lightning-induced surges and inductive switching transients |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 11.2 V. Use Value: Limits voltage seen by downstream PMICs and microcontrollers to safe levels during ISO 16750-2 pulses. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs. IC Role / Device Role / Timing Role: TVS mounted across differential signal pair or single-ended output to ground. Use Value: Prevents ESD damage (IEC 61000-4-2) and cable discharge events without degrading signal integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Input-side protection of AC/DC adapters against mains-borne surges and capacitor discharge. IC Role / Device Role / Timing Role: Primary clamping device upstream of rectifier and bulk capacitor. Use Value: Absorbs 1500 W transients while maintaining <1 μA leakage at 6.5 V to avoid standby power penalty. | Use Scenario: Protecting -48 V telecom power distribution boards from hot-swap and fault transients. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on positive-rail side only. Use Value: Clamps positive-going spikes to ≤11.2 V without affecting steady-state -48 V rail operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for lower-energy transients; limited to consumer-grade non-automotive use | Select when board space is constrained and surge energy does not exceed 400 W |
| SMCJ6.5A-M3/57T | Same electrical specs and SMC package, but M3 suffix denotes halogen-free RoHS without AEC-Q101 path | Commercial industrial use only; not qualified for automotive environments | Choose for cost-sensitive industrial designs where AEC-Q101 is not required |
Compared with SMCJ6.5AHM3/I, SMAJ6.5AHE3/A offers smaller size but reduced surge capacity and thermal performance, while SMCJ6.5A-M3/57T matches all electrical and mechanical specs but lacks the AEC-Q101 qualification pathway - making SMCJ6.5AHM3/I the preferred choice for automotive-qualified designs requiring halogen-free compliance.
Availability
SMCJ6.5AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with halogen-free, RoHS-compliant construction and AEC-Q101 qualification readiness.
Supply support for SMCJ6.5AHM3/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, precision, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is critical.
FAQ
What is the clamping voltage of SMCJ6.5AHM3/I at its rated peak pulse current?
The SMCJ6.5AHM3/I has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 133.9 A under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88394) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ6.5AHM3/I maintains this clamping performance across its specified operating temperature range.
Is SMCJ6.5AHM3/I suitable for automotive applications?
Yes, SMCJ6.5AHM3/I is built on Vishay's AEC-Q101-qualified platform: the HM3 suffix indicates halogen-free, RoHS-compliant construction with qualification path for automotive use. While the base SMCJ6.5AHM3/I is commercial-grade, its HE3/HM3 variants are explicitly rated for automotive environments. Engineers must verify final qualification status per lot documentation, but the SMCJ6.5AHM3/I shares identical electrical, thermal, and mechanical specs with qualified versions.
What is the thermal resistance of SMCJ6.5AHM3/I, and how does it affect layout?
The SMCJ6.5AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and minimize trace length between terminals and ground planes. Derating curves in Figure 2 of the SMCJ6.5AHM3/I datasheet guide thermal design for elevated ambient conditions.
How does the HM3 suffix differ from E3 or M3 in SMCJ6.5AHM3/I?
The HM3 suffix in SMCJ6.5AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification eligibility - distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). All three share identical electrical parameters and SMC package dimensions, but only HM3 and HE3 variants support the full AEC-Q101 test suite. The "I" in SMCJ6.5AHM3/I specifies 13-inch tape-and-reel packaging (3500 units per reel).
Can SMCJ6.5AHM3/I be used in bidirectional configurations?
No, SMCJ6.5AHM3/I is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional operation requires the CA variant (e.g., SMCJ6.5CA), which has symmetrical breakdown in both polarities. Using SMCJ6.5AHM3/I in reverse-biased configurations risks permanent damage due to forward conduction beyond its 3.5 V VF rating at 100 A. For bidirectional protection, select the corresponding CA-series part with verified VBR symmetry.
SMCJ6.5AHM3/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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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)
SMCJ6.5AHM3/I FAQ
1.How can I place an order for SMCJ6.5AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5AHM3/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 SMCJ6.5AHM3/I reliable?
The price and inventory of SMCJ6.5AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ6.5AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5AHM3/I?
SMCJ6.5AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5AHM3/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 SMCJ6.5AHM3/I?
For technical support, including SMCJ6.5AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5AHM3/I requirements.
6.How does Aetrix verify that SMCJ6.5AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5AHM3/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 SMCJ6.5AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ6.5AHM3/I?
All SMCJ6.5AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5AHM3/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 SMCJ6.5AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ6.5AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5AHM3/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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