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Vishay General Semiconductor - Diodes Division SMAJ6.5CHE3/61
- Part No.:
- SMAJ6.5CHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5CHE3/61.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,758
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Product details
Overview
SMAJ6.5CHE3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection of sensitive electronics. It features a 6.5 V stand-off voltage (VWM), 12.3 V maximum clamping voltage (VC) at 32.5 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), making it suitable for automotive-grade ESD and surge protection on signal lines and power rails.
For engineers reviewing the SMAJ6.5CHE3/61 datasheet, SMAJ6.5CHE3/61 pinout, SMAJ6.5CHE3/61 application, or SMAJ6.5CHE3/61 equivalent, this device serves as a high-reliability, AEC-Q101 qualified TVS for automotive sensor interfaces, industrial I/O ports, and low-voltage DC power inputs where stable clamping and low leakage (<500 µA at VWM) are critical.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 7.22 V and 8.82 V at 10 mA test current. Its glass-passivated junction ensures stable performance under repetitive surge stress and supports operation across –55 °C to +150 °C junction temperature range.
The device delivers 400 W peak pulse power capability (derated to 300 W above 78 V) with low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2), lightning-induced surges (IEC 61000-4-5), and inductive switching transients in compact surface-mount layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 5 V systems. |
| VC @ IPPM | 12.3 V - Clamped voltage at 32.5 A peak pulse current; ensures protected ICs see no more than 12.3 V during worst-case surge. |
| IPPM | 32.5 A - Peak surge current survivable with 10/1000 µs waveform; sufficient for Level 4 IEC 61000-4-5 (4 kV, 2 Ω source). |
| PPPM | 400 W - Peak pulse power rating; enables robust protection without thermal runaway under short-duration transients. |
| ID @ VWM | <500 µA - Reverse leakage at 6.5 V; minimizes standby power loss and avoids false triggering in low-current circuits. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade operating and storage temperature range; validated per AEC-Q101. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or floating signal paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | Either terminal accepts positive or negative transients; no cathode band marking required for CA/HE3 variants. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures long-term reliability and stable VBR drift <±5% over lifetime under thermal cycling and humidity stress. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning; supports automated SMT assembly. |
| Low clamping ratio (VC/VWM = 1.89) | Minimizes overvoltage exposure during clamping - critical for protecting 5 V logic and analog front-ends. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Node |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller ADC pins in vehicle door modules against load dump and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting transient overvoltage to ≤12.3 V while drawing <500 µA leakage at 6.5 V nominal rail. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation controllers exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Symmetrical clamping device mounted across bus pair to suppress common-mode surges without disrupting DC bias. Use Value: Enables reliable communication up to 1 Mbps by clamping ±12.3 V transients within 1 ns, preserving signal edge fidelity. |
| USB 2.0 Data Line Protection | 5 V Power Rail Surge Suppression |
Use Scenario: ESD protection for D+/D– lines in automotive infotainment USB ports compliant with IEC 61000-4-2 Level 4 (±15 kV contact). IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed inline with data traces to avoid signal degradation. Use Value: Provides sub-1 ns response with <500 µA leakage, meeting USB 2.0 eye diagram requirements while surviving repeated ESD events. |
Use Scenario: Secondary overvoltage clamp on 5 V supply rail feeding MCU, memory, and interface ICs in telematics units. IC Role / Device Role / Timing Role: Standby protector that activates only during >6.5 V excursions, complementing primary DC-DC regulation. Use Value: Limits fault voltage to 12.3 V during 32.5 A surges, preventing latch-up or gate oxide damage in downstream silicon. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA-E3/61 | Same VWM (6.5 V), identical DO-214AC package and AEC-Q101 qualification, but commercial-grade (non-HE3) construction. | Lacks high-reliability whisker testing (JESD201 Class 2) and extended lifetime validation for mission-critical automotive modules. | Select when cost sensitivity outweighs need for automotive-grade process controls and long-term field reliability assurance. |
| SMCJ6.5CAHE3/61 | Higher 1500 W PPPM, same VWM/VC, but in larger DO-214AB (SMC) package - 2.5× footprint and higher thermal mass. | Better suited for high-energy surge environments (e.g., 12 V battery line protection), but incompatible with space-constrained PCB layouts. | Choose only if system-level surge testing requires >400 W handling and board area permits SMC footprint. |
Compared with SMAJ6.5CHE3/61, SMAJ6.5CA-E3/61 offers identical electrical specs at lower cost but reduced process rigor, while SMCJ6.5CAHE3/61 trades compactness for higher energy absorption - neither is pin-compatible due to differing package geometries and thermal footprints.
Availability
SMAJ6.5CHE3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN node hardening, and 5 V USB data line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMAJ6.5CHE3/61 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, MOSFETs, and passive components engineered for automotive, industrial, and computing applications.
The SMAJ series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing low clamping voltage, repeatable surge endurance, and compatibility with modern lead-free manufacturing.
FAQ
What is the clamping voltage of SMAJ6.5CHE3/61 at its rated peak pulse current?
The SMAJ6.5CHE3/61 has a maximum clamping voltage (VC) of 12.3 V when subjected to its rated peak pulse current of 32.5 A using a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number 88390, Rev. 29-Oct-08) and reflects worst-case performance at TA = 25 °C with recommended PCB pad layout. The SMAJ6.5CHE3/61 maintains this clamping level consistently across its qualified temperature range.
Is SMAJ6.5CHE3/61 unidirectional or bidirectional, and how is polarity identified?
SMAJ6.5CHE3/61 is a bi-directional TVS diode, indicated by the "CA" suffix and "HE3" high-reliability grade. Unlike uni-directional variants, it carries no cathode band marking and functions identically in both polarities - essential for protecting AC-coupled or floating signal paths. This symmetry is confirmed in the Electrical Characteristics table of the Vishay datasheet, where parameters apply "in both directions" for CA devices like SMAJ6.5CHE3/61.
Does SMAJ6.5CHE3/61 meet automotive qualification standards?
Yes, SMAJ6.5CHE3/61 is explicitly qualified to AEC-Q101 for high-reliability automotive use, as denoted by the "HE3" suffix in its part number and stated in the Mechanical Data section of the Vishay datasheet. It undergoes rigorous stress testing including temperature cycling, humidity bias, and mechanical shock - all documented in the qualification report referenced by Document Number 88390. The SMAJ6.5CHE3/61 is approved for under-hood and cabin applications requiring zero defect rates over vehicle lifetime.
What is the maximum reverse leakage current for SMAJ6.5CHE3/61 at its stand-off voltage?
The maximum reverse leakage current (ID) for SMAJ6.5CHE3/61 is 500 µA at its stand-off voltage (VWM) of 6.5 V and TA = 25 °C, per the Electrical Characteristics table in the Vishay datasheet. This low leakage ensures minimal impact on power budget and signal integrity in battery-powered or precision analog circuits. The SMAJ6.5CHE3/61 maintains this specification across its full operating temperature range, with typical values significantly lower at room temperature.
What package type and mounting specifications apply to SMAJ6.5CHE3/61?
SMAJ6.5CHE3/61 uses the DO-214AC (SMA) surface-mount package, with mechanical dimensions defined in Figure 5 of the Vishay datasheet (Document Number 88390). It requires 0.2 × 0.2 inch (5.0 × 5.0 mm) copper pads per terminal for rated power dissipation and is compatible with MSL Level 1 reflow profiles (peak 260 °C). The SMAJ6.5CHE3/61 is supplied in 7-inch tape-and-reel format (package code 61), optimized for high-speed pick-and-place assembly.
SMAJ6.5CHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 32.5A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ6.5CHE3/61 FAQ
1.How can I place an order for SMAJ6.5CHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5CHE3/61 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 SMAJ6.5CHE3/61 reliable?
The price and inventory of SMAJ6.5CHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5CHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ6.5CHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5CHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5CHE3/61?
SMAJ6.5CHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5CHE3/61 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 SMAJ6.5CHE3/61?
For technical support, including SMAJ6.5CHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5CHE3/61 requirements.
6.How does Aetrix verify that SMAJ6.5CHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5CHE3/61 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 SMAJ6.5CHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ6.5CHE3/61?
All SMAJ6.5CHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5CHE3/61, 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 SMAJ6.5CHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ6.5CHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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