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Vishay General Semiconductor - Diodes Division SMCJ6.5AHE3_A/I
- Part No.:
- SMCJ6.5AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5AHE3_A/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,356
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Product details
Overview
SMCJ6.5AHE3_A/I from Vishay General Semiconductor is a unidirectional 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 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), 11.2 V clamping voltage at 133.9 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCJ6.5AHE3_A/I datasheet, SMCJ6.5AHE3_A/I pinout, SMCJ6.5AHE3_A/I application, or SMCJ6.5AHE3_A/I equivalent, this device is selected for high-energy surge immunity in automotive ECUs, industrial sensor interfaces, and 12 V supply rail protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCJ6.5AHE3_A/I operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR range (7.22–7.98 V) to clamp transients to ≤11.2 V at rated surge current. Its glass-passivated junction ensures stable breakdown and low leakage (≤500 µA at 6.5 V).
Thermally, it delivers 6.5 W steady-state dissipation at TA = 50 °C with RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = 150 °C. Polarity is marked by a cathode band; no marking on bidirectional 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 - guaranteed avalanche initiation window for predictable turn-on |
| VC @ IPPM | 11.2 V at 133.9 A - clamped voltage during 1500 W, 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capability per IEC 61000-4-5 Level 4 compliance |
| ID @ VWM | ≤500 µA - low leakage preserves battery life and avoids false triggers in low-power systems |
| TJ max | +150 °C - extended thermal range supports under-hood automotive deployment |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (e.g., 4 kV/2 Ω) without degradation |
| 11.2 V clamping voltage | Protects 5 V and 3.3 V logic interfaces connected to 12 V supply rails against destructive overvoltage |
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature, humidity, and mechanical stress tests |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking, reducing manufacturing complexity |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Transceiver Protection |
|---|---|
Use Scenario: Protecting 12 V power input and LIN bus pins in BCMs exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach MCU and driver ICs. Use Value: Limits voltage to ≤11.2 V during 133.9 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V microcontrollers. | Use Scenario: Safeguarding CANH/CANL differential pair inputs in industrial PLC modules subjected to EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to common ground, absorbing common-mode transients. Use Value: Maintains signal integrity below ISO 11898-2 thresholds while surviving repeated 1 kV EFT bursts due to low clamping and fast response. |
| Consumer Power Adapter Input Stage | Telecom PoE Midspan Surge Protection |
Use Scenario: Input-side protection of AC/DC adapters against line surges and capacitor discharge events. IC Role / Device Role / Timing Role: Primary-level TVS on DC output (e.g., 5 V/12 V) to absorb residual transients passing through primary-side filtering. Use Value: Prevents secondary-side regulator failure and downstream USB port damage with sub-12 V clamping at full 1500 W rating. | Use Scenario: Secondary-side protection of 48 V PoE power delivery circuits in midspan injectors before Ethernet magnetics. IC Role / Device Role / Timing Role: Unidirectional TVS on PSE output rail to clamp induced surges from cable coupling or hot-plug events. Use Value: Ensures IEEE 802.3af/at compliance by limiting voltage excursion to <15 V during 10/1000 µs surges, preserving PD interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0AHE3_A/I | Lower PPPM (500 W), lower VBR (5.2–6.0 V), same SMC package and AEC-Q101 qualification | Better suited for 5 V rail protection; insufficient for 12 V load dump immunity | Select when protecting 3.3 V/5 V logic with lower surge exposure and tighter VWM margin |
| SMCJ6.5CAHE3_A/I | Bidirectional variant; identical VWM/VBR/PPPM but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, audio) where polarity reversal occurs | Choose for bidirectional signal paths; not interchangeable without circuit redesign due to polarity behavior |
Compared with SAC5.0AHE3_A/I and SMCJ6.5CAHE3_A/I, the SMCJ6.5AHE3_A/I provides optimal balance of 12 V rail compatibility, 1500 W surge capacity, and automotive qualification-making it the preferred choice for unidirectional DC power line protection where clamping voltage headroom and energy absorption are critical.
Availability
SMCJ6.5AHE3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom power delivery systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMCJ6.5AHE3_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, efficiency, and application-specific validation.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding AEC-Q101 qualification, low clamping, and robust surge endurance.
FAQ
What is the clamping voltage of the SMCJ6.5AHE3_A/I at its rated peak pulse current?
The SMCJ6.5AHE3_A/I has a maximum clamping voltage (VC) of 11.2 V at its rated peak pulse current (IPPM) of 133.9 A, measured under the standard 10/1000 µs waveform. This value ensures downstream 5 V and 3.3 V components remain within safe operating limits during surge events. The SMCJ6.5AHE3_A/I achieves this performance via low incremental surge resistance and optimized junction design.
Is the SMCJ6.5AHE3_A/I suitable for automotive applications?
Yes, the SMCJ6.5AHE3_A/I is AEC-Q101 qualified and specifically designed for automotive use, including body control modules, infotainment power supplies, and sensor interfaces. Its construction-glass-passivated junction, MSL Level 1 reflow compatibility, and operation up to +150 °C junction temperature-meets stringent automotive reliability requirements. The SMCJ6.5AHE3_A/I also supports load dump and jump-start transient protection per ISO 7637-2.
How does the SMCJ6.5AHE3_A/I differ from the bidirectional SMCJ6.5CAHE3_A/I?
The SMCJ6.5AHE3_A/I is unidirectional and clamps only during reverse-voltage transients, with polarity indicated by a cathode band. In contrast, the SMCJ6.5CAHE3_A/I is bidirectional and clamps symmetrically for both polarities-required for AC-coupled or floating lines like RS-485. They share identical VWM (6.5 V), VBR, PPPM (1500 W), and package, but the SMCJ6.5AHE3_A/I cannot replace the CA version without circuit modification due to polarity dependence.
What is the maximum reverse leakage current for the SMCJ6.5AHE3_A/I at its stand-off voltage?
The SMCJ6.5AHE3_A/I exhibits a maximum reverse leakage current (ID) of 500 µA at its stand-off voltage (VWM) of 6.5 V, measured at TA = 25 °C. This low leakage minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. The SMCJ6.5AHE3_A/I maintains this specification across its full operating temperature range, supporting battery-powered and energy-sensitive designs.
Does the SMCJ6.5AHE3_A/I require special PCB layout considerations?
Yes-the SMCJ6.5AHE3_A/I should be mounted using the minimum recommended pad layout (0.31" × 0.31" copper pads per terminal) to achieve rated 1500 W pulse power and thermal performance. Short, low-inductance traces to ground are essential to minimize voltage overshoot during fast transients. The SMCJ6.5AHE3_A/I's cathode band must align with the protected line, and thermal relief should be avoided on anode/cathode pads to ensure optimal heat dissipation per RθJL = 15 °C/W.
SMCJ6.5AHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ6.5AHE3_A/I FAQ
1.How can I place an order for SMCJ6.5AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5AHE3_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 SMCJ6.5AHE3_A/I reliable?
The price and inventory of SMCJ6.5AHE3_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 SMCJ6.5AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ6.5AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5AHE3_A/I?
SMCJ6.5AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5AHE3_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 SMCJ6.5AHE3_A/I?
For technical support, including SMCJ6.5AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ6.5AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5AHE3_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 SMCJ6.5AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ6.5AHE3_A/I?
All SMCJ6.5AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5AHE3_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 SMCJ6.5AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ6.5AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5AHE3_A/I Tags
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