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Vishay General Semiconductor - Diodes Division SMCJ6.5HE3/57T
- Part No.:
- SMCJ6.5HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5HE3/57T.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,422
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Product details
Overview
SMCJ6.5HE3/57T from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. 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), 133.9 A peak pulse current (IPPM), and clamps transients to ≤11.2 V. It is AEC-Q101 qualified and used in automotive power line and sensor interface protection.
For engineers reviewing the SMCJ6.5HE3/57T datasheet, SMCJ6.5HE3/57T pinout, SMCJ6.5HE3/57T application, or SMCJ6.5HE3/57T equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, 11.2 V clamping voltage at rated IPPM, RoHS-compliant AEC-Q101 qualification, and DO-214AB thermal performance with RθJA = 75 °C/W.
Technical Context
The SMCJ6.5HE3/57T operates as a silicon avalanche diode, leveraging glass-passivated junction technology for stable, repeatable breakdown behavior under transient stress. Its unidirectional configuration enables integration into DC power rails and signal paths where reverse conduction must be blocked.
It complies with ANSI/IEEE C62.35 for surge suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow). Thermal resistance is specified at RθJA = 75 °C/W on 8.0 mm × 8.0 mm copper pads, supporting reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC working margin. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC @ IPPM | ≤11.2 V at IPPM = 133.9 A - Clamping voltage under full 1500 W surge; determines protected circuit's maximum transient exposure. |
| PPPM | 1500 W (10/1000 µs waveform) - Peak surge energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a automotive transients. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments with minimal derating. |
| Package | DO-214AB (SMCJ) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 3.20 mm height; supports automated placement and IPC-compliant reflow. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for powertrain and body control modules. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads; cathode indicated by band on one end; terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential node; completes conduction path during positive transients on cathode side. |
| Cathode (banded end) | High-side surge input terminal | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, ADAS sensors, and infotainment power supplies. |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns; no baking required prior to assembly. |
| Low incremental surge resistance | Supports tight clamping (VC − VBR ≈ 3.5 V) and minimizes voltage overshoot during fast-rising transients. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - critical for high-reliability automotive PCBs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 13.5 V while blocking reverse leakage. Use Value: Limits peak voltage to ≤11.2 V during 133.9 A transients, preventing damage to downstream LDOs, MCUs, and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontrollers in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal lines to absorb ESD and inductive kickback without distorting millivolt-level signals. Use Value: Clamps fast transients within nanoseconds while maintaining <1 µA leakage at 6.5 V, preserving ADC accuracy and signal integrity. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Securing 48 V PoE-powered equipment inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary surge limiter upstream of DC-DC converters; coordinated with secondary TVS and filter stages. Use Value: Absorbs 1500 W pulses without failure, enabling compliance with IEC 61000-4-5 Level 4 (4 kV/2 Ω) when properly mounted. |
Use Scenario: Hardening USB VBUS lines in portable chargers and docking stations against ESD and cable discharge events. IC Role / Device Role / Timing Role: Uni-directional clamp referenced to ground; blocks reverse conduction while shunting positive surges on +5 V line. Use Value: Delivers <11.2 V clamping at 133.9 A with <1000 µA leakage at 6.5 V, ensuring USB enumeration stability and port longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (~110 °C/W), same VWM/VBR range. | Not suitable for 1500 W automotive load dump; limited to low-energy ESD and signal-line protection. | Select only for space-constrained consumer interfaces where surge energy is <400 W. |
| SMCJ6.5AHE3/57T | Identical electrical specs and AEC-Q101 qualification; differs only in marking code (no "E" in part number per Vishay ordering guide). | No functional difference; both meet same automotive reliability and thermal requirements. | SMCJ6.5HE3/57T and SMCJ6.5AHE3/57T are functionally interchangeable - verify marking acceptance with your assembly house. |
Compared with SMAJ6.5A-E3/61T, the SMCJ6.5HE3/57T delivers 3.75× higher surge power and superior thermal dissipation for under-hood use; versus SMCJ6.5AHE3/57T, it is identical in performance and qualification - choice depends solely on internal part numbering policy.
Availability
SMCJ6.5HE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, AEC-Q101 traceability, and 1500 W transient immunity.
Supply support for SMCJ6.5HE3/57T 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 automotive-grade qualification.
The SMCJ6.5HE3/57T belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ6.5HE3/57T under full-rated surge current?
The SMCJ6.5HE3/57T clamps to a maximum of 11.2 V when subjected to its rated peak pulse current of 133.9 A (10/1000 µs waveform). This value is measured and guaranteed per the Vishay datasheet (Document Number 88394, page 2), and defines the upper voltage limit imposed on protected circuits during worst-case transients.
Is the SMCJ6.5HE3/57T suitable for bi-directional transient protection?
No - the SMCJ6.5HE3/57T is a uni-directional TVS diode, as confirmed by its "A" suffix and cathode band marking. For bi-directional protection, Vishay specifies the SMCJ6.5CA variant (e.g., SMCJ6.5CAHE3/57T), which lacks polarity marking and conducts symmetrically in both directions.
Does the HE3 suffix on SMCJ6.5HE3/57T indicate RoHS compliance and automotive qualification?
Yes - the HE3 suffix denotes both RoHS compliance and AEC-Q101 qualification per Vishay's ordering nomenclature. The "H" signifies AEC-Q101 qualification, "E3" indicates RoHS-compliant matte tin plating, and "HE3" together confirms automotive-grade reliability and lead-free assembly compatibility.
What is the thermal resistance of the SMCJ6.5HE3/57T, and how does it affect layout design?
The SMCJ6.5HE3/57T 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. To maintain TJ ≤ 150 °C at full 6.5 W steady-state dissipation, PCB layout must provide adequate copper area and avoid thermal bottlenecks near the device.
Can the SMCJ6.5HE3/57T replace the older SMCJ6.5A-E3/57T in existing designs?
Yes - the SMCJ6.5HE3/57T is a direct replacement for SMCJ6.5A-E3/57T in all electrical, mechanical, and thermal aspects. Both share identical VWM, VBR, VC, PPPM, and DO-214AB packaging; the HE3 version adds AEC-Q101 qualification and enhanced whisker resistance, making it backward-compatible and more robust.
SMCJ6.5HE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 122A
- 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)
SMCJ6.5HE3/57T FAQ
1.How can I place an order for SMCJ6.5HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5HE3/57T 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 SMCJ6.5HE3/57T reliable?
The price and inventory of SMCJ6.5HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ6.5HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5HE3/57T?
SMCJ6.5HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5HE3/57T 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 SMCJ6.5HE3/57T?
For technical support, including SMCJ6.5HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5HE3/57T requirements.
6.How does Aetrix verify that SMCJ6.5HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5HE3/57T 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 SMCJ6.5HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ6.5HE3/57T?
All SMCJ6.5HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5HE3/57T, 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 SMCJ6.5HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ6.5HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5HE3/57T Tags
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