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Vishay General Semiconductor - Diodes Division SMAJ6.5CHE3/5A
- Part No.:
- SMAJ6.5CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5CHE3/5A.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,523
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Product details
Overview
SMAJ6.5CHE3/5A from Vishay General Semiconductor is a high-reliability, AEC-Q101-qualified bi-directional transient voltage suppressor (TVS) in DO-214AC (SMA) package, designed for automotive and industrial surge protection. It features 6.5 V stand-off voltage (VWM), 12.3 V clamping voltage (VC) at 32.5 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), protecting sensitive signal lines and power rails against ESD and load-switching transients.
For engineers reviewing the SMAJ6.5CHE3/5A datasheet, SMAJ6.5CHE3/5A pinout, SMAJ6.5CHE3/5A application, or SMAJ6.5CHE3/5A equivalent, this device serves as a RoHS-compliant, high-reliability TVS for automotive-grade sensor interfaces, CAN bus protection, and microcontroller I/O line safeguarding where low leakage (<500 µA at VWM) and fast response (<1 ns) are critical.
Technical Context
This bi-directional TVS operates symmetrically in both polarities with identical breakdown (7.22–8.82 V at 10 mA), clamping (12.3 V max), and leakage characteristics. Its glass-passivated junction ensures stable performance across -55 °C to +150 °C operating temperature range and supports automated SMT placement per J-STD-020 MSL Level 1.
The device delivers 400 W peak pulse power handling on 0.2 × 0.2" copper pads, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets AEC-Q101 stress testing requirements and exhibits <1 ns response time to transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse working voltage before clamping begins; sets safe operating margin for 5 V logic or sensor supply rails. |
| VBR (min/max) | 7.22 V / 8.82 V at 10 mA - Confirmed breakdown threshold ensures reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 12.3 V at 32.5 A - Clamped voltage limits downstream IC stress during 10/1000 µs surges, compatible with 12 V automotive systems. |
| IPPM | 32.5 A - Peak surge current capacity enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 transients. |
| PPPM | 400 W - Peak pulse power rating validated under standard 10/1000 µs waveform; derates above 78 V but fully applicable at 6.5 V. |
| ID @ VWM | <500 µA - Low reverse leakage preserves signal integrity and battery life in always-on automotive modules. |
| TJ Range | -55 °C to +150 °C - Extended junction temperature range supports under-hood and engine-control unit deployment. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals suitable for AC-coupled or differential signal paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Either terminal accepts positive or negative transients; no cathode band marking required for CA-series devices. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control, ADAS sensors, and body controllers requiring zero-failure reliability. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 (260 °C) | Enables lead-free reflow compatibility without pre-baking; supports high-volume automated assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving protection margin for sub-13 V-rated ICs. |
| RoHS & WEEE compliant | Meets EU regulatory requirements for hazardous substances and end-of-life recycling in automotive and industrial equipment. |
Applications
| Automotive Sensor Interface | CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional TVS placed between sensor output and MCU ADC input to clamp ±100 V transients without affecting DC accuracy. Use Value: Maintains signal fidelity with <500 µA leakage at 6.5 V and clamps to 12.3 V, ensuring ADC input stays within absolute maximum ratings. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle network nodes against ESD (±8 kV contact) and ISO 7637-2 coupled surges. IC Role / Device Role / Timing Role: Paired SMAJ6.5CHE3/5A devices placed line-to-ground on each CAN differential pair to absorb common-mode energy. Use Value: Symmetrical 12.3 V clamping prevents CAN transceiver damage while preserving bus differential signaling integrity during fast transients. |
| Industrial PLC I/O Module | Consumer Appliance Motor Control |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback when solenoids or relays switch off. IC Role / Device Role / Timing Role: Bi-directional TVS connected across input terminals to shunt surge energy before it reaches optocoupler or Schmitt trigger input stage. Use Value: 400 W pulse power rating handles repetitive 10/1000 µs transients up to 0.01% duty cycle, extending module field lifetime. |
Use Scenario: Protecting microcontroller GPIO pins driving H-bridge gate drivers in washing machine or HVAC blower motor circuits. IC Role / Device Role / Timing Role: Local TVS at MCU output pin to suppress voltage spikes induced by motor commutation noise coupling into logic lines. Use Value: Sub-1 ns response time limits spike duration, preventing false triggering or latch-up in 3.3 V/5 V logic despite proximity to high-current switching nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5AHE3/5A | Uni-directional variant with same VWM, VC, and PPPM; includes cathode band marking and forward voltage drop (VF = 3.5 V @ 25 A). | Requires polarity-aware layout; suited for DC-biased rails where unidirectional clamping suffices (e.g., 12 V supply input). | Select SMAJ6.5AHE3/5A only when circuit topology guarantees consistent polarity and benefits from lower forward conduction loss. |
| SMCJ6.5CHE3/5A | Same VWM and bi-directionality but in larger DO-214AB (SMC) package; rated for 1500 W PPPM and 113 A IPPM. | Higher surge capacity suits primary-level protection (e.g., main board input), not secondary-side signal line use. | Choose SMCJ6.5CHE3/5A only when system-level surge tests exceed 400 W or PCB space allows larger footprint. |
Compared with SMAJ6.5CHE3/5A, the uni-directional SMAJ6.5AHE3/5A offers polarity-specific clamping with forward conduction capability, while the SMCJ6.5CHE3/5A provides higher surge margin at the cost of footprint and thermal mass-making SMAJ6.5CHE3/5A optimal for compact, bi-directional, automotive-grade secondary protection.
Availability
SMAJ6.5CHE3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus safeguarding, and industrial PLC I/O modules requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMAJ6.5CHE3/5A 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 qualification.
The SMAJ series is engineered specifically for high-reliability transient suppression in harsh environments, targeting automotive electronics, industrial controls, and telecom infrastructure where AEC-Q101 validation and stable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMAJ6.5CHE3/5A under maximum rated surge current?
The SMAJ6.5CHE3/5A has a maximum clamping voltage (VC) of 12.3 V when subjected to its rated peak pulse current of 32.5 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on recommended 0.2 × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMAJ6.5CHE3/5A suitable for automotive applications?
Yes, SMAJ6.5CHE3/5A is explicitly qualified to AEC-Q101 standards and carries the "HE3" suffix denoting high-reliability, automotive-grade construction. It operates reliably from -55 °C to +150 °C, passes MSL Level 1 reflow, and meets whisker resistance Class 2 per JESD201-making it appropriate for engine control units, ADAS sensors, and body electronics.
How does SMAJ6.5CHE3/5A differ from the standard SMAJ6.5CHE3/5A without the 'H' suffix?
The 'H' in SMAJ6.5CHE3/5A indicates high-reliability/automotive grade (AEC-Q101 qualified), whereas non-H variants like SMAJ6.5CE3/5A are commercial-grade only. SMAJ6.5CHE3/5A undergoes additional stress testing, tighter parametric screening, and extended temperature validation-critical for automotive deployment where failure modes must be rigorously controlled.
What is the reverse leakage current specification for SMAJ6.5CHE3/5A at its stand-off voltage?
At its rated stand-off voltage (VWM) of 6.5 V and ambient temperature of 25 °C, the SMAJ6.5CHE3/5A exhibits a maximum reverse leakage current (ID) of 500 µA. This low leakage preserves power efficiency in always-on systems and avoids loading sensitive analog or reference circuits.
Can SMAJ6.5CHE3/5A be used in bi-directional signal lines such as RS-485 or USB D+/D-?
Yes, SMAJ6.5CHE3/5A is a bi-directional TVS with symmetrical electrical characteristics in both polarities, making it suitable for protecting balanced differential signal lines. Its 12.3 V clamping voltage and low capacitance (typical 500 pF at 0 V, per family data) support signal integrity in protocols like RS-485, though layout must minimize parasitic inductance to preserve response speed.
SMAJ6.5CHE3/5A 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)
SMAJ6.5CHE3/5A FAQ
1.How can I place an order for SMAJ6.5CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5CHE3/5A 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 SMAJ6.5CHE3/5A reliable?
The price and inventory of SMAJ6.5CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ6.5CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5CHE3/5A?
SMAJ6.5CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5CHE3/5A 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 SMAJ6.5CHE3/5A?
For technical support, including SMAJ6.5CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5CHE3/5A requirements.
6.How does Aetrix verify that SMAJ6.5CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5CHE3/5A 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 SMAJ6.5CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ6.5CHE3/5A?
All SMAJ6.5CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5CHE3/5A, 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 SMAJ6.5CHE3/5A part is unused and in its original packaging.
Return procedure for SMAJ6.5CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5CHE3/5A Tags
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