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Vishay General Semiconductor - Diodes Division SMCJ6.5AHE3_A/H
- Part No.:
- SMCJ6.5AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5AHE3_A/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,917
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Product details
Overview
SMCJ6.5AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount 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 7.22 V minimum breakdown voltage (VBR), 11.2 V maximum clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard automotive ECUs, industrial sensor interfaces, and power supply inputs against ESD and load dump transients.
For engineers reviewing the SMCJ6.5AHE3_A/H datasheet, SMCJ6.5AHE3_A/H pinout, SMCJ6.5AHE3_A/H application, or SMCJ6.5AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 6.5 V standoff voltage (VWM), low 0.061 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly on standard PCB pad layouts per J-STD-020 MSL level 1.
Technical Context
The SMCJ6.5AHE3_A/H operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transient energy before downstream ICs are damaged. Its cathode-band polarity marking enables unambiguous orientation during placement.
Thermal performance is defined by RθJA = 75 °C/W (junction-to-ambient, typical) and RθJL = 15 °C/W (junction-to-lead), supporting reliable operation up to TJ = +150 °C. The device meets UL 497B recognition (QVGQ2) and is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.22 V to 7.98 V at IT = 10 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 6.5 V - maximum continuous reverse operating voltage; ensures no leakage conduction under normal DC bias |
| VC @ IPPM | 11.2 V at 133.9 A (10/1000 µs) - limits worst-case transient voltage seen by protected circuitry |
| PPPM | 1500 W - peak transient energy absorption capacity without failure under standardized surge waveform |
| IFSM | 200 A (8.3 ms half-sine) - supports high-energy inductive switching events like relay coil de-energization |
| TJ max. | +150 °C - enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| Temperature Coefficient | 0.061 %/°C - ensures stable VBR across operating temperature range, critical for precision protection |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band denotes terminal polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Provides return path during clamping; must be routed with low-inductance trace to minimize voltage overshoot |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line | Acts as high-impedance node until VBR exceeded; determines directionality and clamping polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock testing |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking or special handling |
| UL 497B recognition (QVGQ2) | Confirms compliance with telecom and industrial surge protection safety standards |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot during transients, reducing stress on downstream MOSFETs and microcontrollers |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V–12 V power rails in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between input rail and chassis ground to shunt load-dump energy. Use Value: Clamps 12 V rail to ≤11.2 V during 133.9 A surge, preventing damage to LDOs and CAN transceivers without derating margin loss. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (e.g., RS-485) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff protection element mounted at connector entry point, referenced to local ground plane. Use Value: Limits induced transients to <11.2 V within 1 ns, preserving signal integrity and avoiding false triggering of ADCs or comparators. |
| Consumer Power Adapter Input Protection | Telecom DC Feeder Line Protection |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs and set-top boxes subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp on regulated 5 V/9 V output rail, upstream of USB ports and PMICs. Use Value: Absorbs 1500 W transient energy without degradation, maintaining output regulation and enabling Class II isolation compliance. |
Use Scenario: Primary protection on -48 V DC feeder lines in base station remote radio units (RRUs) and optical network terminals (ONTs). IC Role / Device Role / Timing Role: Cathode-connected to -48 V rail, anode to ground, providing fail-safe clamping during power-up sequencing faults. Use Value: Withstands repeated 200 A surge events while maintaining VWM = 6.5 V standoff - compatible with telecom-specific -48 V nominal systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5AHE3/A | Lower PPPM (400 W), smaller SMA (DO-214AC) package, same VWM/VBR specs | Not suitable for 1500 W surge requirements; limited to lower-energy consumer electronics | Select only when board space is constrained and surge threat level is ≤400 W |
| SMCJ6.5CAHE3_A/H | Bidirectional variant; identical VBR, VC, and PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose for RS-232, Ethernet PHY, or audio line protection where bidirectional clamping is mandatory |
Compared with SMCJ6.5AHE3_A/H, SMAJ6.5AHE3/A offers footprint reduction at the cost of 73 % lower surge capability, while SMCJ6.5CAHE3_A/H retains full 1500 W performance but sacrifices unidirectional optimization for polarity-agnostic protection - making each alternative appropriate only for distinct circuit topology and threat profile requirements.
Availability
SMCJ6.5AHE3_A/H is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, consumer power adapters, and telecom DC feeder lines requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for SMCJ6.5AHE3_A/H 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, emphasizing AEC-Q101 qualification, low clamping ratios, and robust thermal design for under-hood and factory-floor deployment.
FAQ
What is the standoff voltage rating of the SMCJ6.5AHE3_A/H?
The SMCJ6.5AHE3_A/H has a maximum reverse standoff voltage (VWM) of 6.5 V, meaning it remains in high-impedance state below this DC or RMS voltage level. This value ensures minimal leakage current (<500 µA) during normal operation while allowing precise coordination with downstream overvoltage thresholds. The 6.5 V rating makes SMCJ6.5AHE3_A/H ideal for protecting 5 V logic rails and low-voltage power supplies where tight voltage margins are required.
Is the SMCJ6.5AHE3_A/H AEC-Q101 qualified?
Yes, the SMCJ6.5AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST). The SMCJ6.5AHE3_A/H is therefore approved for use in automotive powertrain, chassis, and body electronics where reliability under thermal and mechanical stress is mandatory.
What is the clamping voltage of the SMCJ6.5AHE3_A/H at its rated peak pulse current?
The SMCJ6.5AHE3_A/H clamps to a maximum of 11.2 V at its rated peak pulse current (IPPM) of 133.9 A, measured using the standardized 10/1000 µs double-exponential waveform. This clamping voltage is guaranteed across the full operating temperature range and represents the highest voltage that will appear across the protected line during a worst-case transient event. Designers use this value to verify that downstream components such as microcontrollers or gate drivers remain within their absolute maximum ratings.
Does the SMCJ6.5AHE3_A/H have a specified junction-to-ambient thermal resistance?
Yes, the SMCJ6.5AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value is critical for calculating maximum power dissipation under steady-state conditions and estimating junction temperature rise during repetitive surge events. For higher reliability in thermally dense layouts, designers should consider adding thermal vias or increasing copper area to approach the RθJL = 15 °C/W lead-based limit.
How does the SMCJ6.5AHE3_A/H differ from the bidirectional SMCJ6.5CAHE3_A/H?
The SMCJ6.5AHE3_A/H is unidirectional - it conducts only when cathode voltage exceeds anode by ≥VBR, making it suitable for DC rail protection with defined polarity. In contrast, SMCJ6.5CAHE3_A/H provides symmetrical clamping in both directions and lacks polarity marking. Both share identical VBR, VC, and PPPM, but SMCJ6.5AHE3_A/H offers tighter leakage control in reverse bias and avoids unnecessary conduction on AC-coupled lines. Selection depends strictly on circuit topology and signal polarity constraints.
SMCJ6.5AHE3_A/H 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/H FAQ
1.How can I place an order for SMCJ6.5AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5AHE3_A/H 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/H reliable?
The price and inventory of SMCJ6.5AHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMCJ6.5AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5AHE3_A/H?
SMCJ6.5AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5AHE3_A/H 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/H?
For technical support, including SMCJ6.5AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5AHE3_A/H requirements.
6.How does Aetrix verify that SMCJ6.5AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5AHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMCJ6.5AHE3_A/H?
All SMCJ6.5AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5AHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMCJ6.5AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5AHE3_A/H Tags
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