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Vishay General Semiconductor - Diodes Division SMAJ6.5CAHE3/61
- Part No.:
- SMAJ6.5CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5CAHE3/61.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,901
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Product details
Overview
SMAJ6.5CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 35.7 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ6.5CAHE3/61 datasheet, SMAJ6.5CAHE3/61 pinout, SMAJ6.5CAHE3/61 application, or SMAJ6.5CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.48), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max (7.22–7.98 V), VC (11.2 V), and IPPM (35.7 A) under 10/1000 μs surge conditions. Its glass-passivated junction ensures stable leakage (<500 μA at VWM) and fast response time (<1 ns), enabling protection against ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for TJ = –55 °C to +150 °C, exhibits a VBR temperature coefficient of +0.061 %/°C, and delivers 3.3 W steady-state power dissipation on infinite heatsink at TA = 50 °C. Thermal resistance is RθJA = 120 °C/W and RθJL = 30 °C/W, supporting reliable operation in compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - Confirmed breakdown range ensuring predictable turn-on across production lot. |
| VC @ IPPM | 11.2 V at 35.7 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy absorption capacity; derates to 300 W above 78 V. |
| ID @ VWM | ≤500 μA - Low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| MSL Level | Level 1 (J-STD-020) - Supports standard reflow without baking; compatible with high-volume SMT assembly. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. No polarity marking on bidirectional types; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity surge) | Accepts reverse surge current during negative-going transients; forms one side of bidirectional clamping path. |
| Cathode | Transient current entry (positive polarity surge) | Accepts forward surge current during positive-going transients; completes symmetrical clamping loop with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when mounted on 5 mm × 5 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V and 5 V logic rails. |
| MSL Level 1, LF peak 260 °C | Enables single-pass lead-free reflow without moisture-related popcorning or delamination. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤11.2 V during 35.7 A surges, preventing latch-up or gate oxide damage in 5 V tolerant transceivers. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel, referenced to common ground or supply rail. Use Value: Absorbs up to 400 W of transient energy without degradation, maintaining system uptime in factory automation environments. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Input-stage protection for USB-C PD adapters and AC/DC converters exposed to mains-borne transients per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS between AC input rectifier output and bulk capacitor, shunting surge current away from controller ICs. Use Value: Fast <1 ns response clamps 1 kV/0.5 kA surges within 11.2 V, preserving OVP circuitry and feedback optocouplers. |
Use Scenario: Secondary-side protection on Ethernet PHY or DSL line drivers subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional clamp across transformer-coupled data lines, referenced to isolated ground plane. Use Value: Symmetric clamping maintains signal integrity on differential pairs while meeting GR-1089-CORE telecom surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM spec. | Choose SMAJ6.5CA-M3/61 for green manufacturing programs requiring halogen-free bill-of-materials. |
| SMBJ6.5CAHE3/61 | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; higher IPPM (52.2 A) and PPPM (600 W). | Requires larger PCB footprint; suited for higher-energy surge environments where 400 W is insufficient. | Choose SMBJ6.5CAHE3/61 when surge threat level exceeds IEC 61000-4-5 Level 4 or layout allows larger package. |
Compared with SMAJ6.5CA-M3/61, the SMAJ6.5CAHE3/61 offers identical performance with standard RoHS compliance; versus SMBJ6.5CAHE3/61, it trades 33 % lower surge rating for 30 % smaller board area-ideal for space-constrained automotive ECUs and portable industrial sensors.
Availability
SMAJ6.5CAHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with AEC-Q101 validation and traceable sourcing.
Supply support for SMAJ6.5CAHE3/61 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 diodes, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMAJ series was developed specifically for robust, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and repeatable clamping performance.
FAQ
What is the clamping voltage of SMAJ6.5CAHE3/61 at its rated peak pulse current?
The SMAJ6.5CAHE3/61 has a maximum clamping voltage (VC) of 11.2 V at its rated peak pulse current (IPPM) of 35.7 A under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per Vishay's test condition, and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMAJ6.5CAHE3/61 suitable for automotive applications?
Yes, SMAJ6.5CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets stringent requirements for temperature cycling, humidity resistance, and surge robustness-making it appropriate for engine control modules, body electronics, and ADAS sensor interfaces where reliability under vibration and thermal stress is critical.
How does the bidirectional configuration of SMAJ6.5CAHE3/61 affect its circuit implementation?
The bidirectional configuration of SMAJ6.5CAHE3/61 means it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. In practice, this allows direct placement across AC-coupled lines, differential pairs, or ungrounded signal paths-eliminating the need for orientation verification during placement and simplifying layout for noise-sensitive analog or communication interfaces.
What is the maximum steady-state power dissipation for SMAJ6.5CAHE3/61?
The SMAJ6.5CAHE3/61 has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at ambient temperature (TA) of 50 °C. Under typical PCB conditions with limited copper area, derating applies-actual usable power is governed by thermal resistance (RθJA = 120 °C/W) and local board temperature rise.
Does SMAJ6.5CAHE3/61 require special handling during reflow soldering?
No-SMAJ6.5CAHE3/61 is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, making it compatible with standard lead-free soldering profiles without pre-baking. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 for solderability, and whisker resistance is certified to JESD 201 Class 2.
SMAJ6.5CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 35.7A
- 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)
SMAJ6.5CAHE3/61 FAQ
1.How can I place an order for SMAJ6.5CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5CAHE3/61 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 SMAJ6.5CAHE3/61 reliable?
The price and inventory of SMAJ6.5CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ6.5CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5CAHE3/61?
SMAJ6.5CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5CAHE3/61 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 SMAJ6.5CAHE3/61?
For technical support, including SMAJ6.5CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5CAHE3/61 requirements.
6.How does Aetrix verify that SMAJ6.5CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5CAHE3/61 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 SMAJ6.5CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ6.5CAHE3/61?
All SMAJ6.5CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5CAHE3/61, 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 SMAJ6.5CAHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ6.5CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5CAHE3/61 Tags
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