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Vishay General Semiconductor - Diodes Division SMAJ6.5C-E3/61
- Part No.:
- SMAJ6.5C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5C-E3/61.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,255
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Product details
Overview
SMAJ6.5C-E3/61 from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. 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 rating with 10/1000 µs waveform - suitable for protecting I/O ports and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ6.5C-E3/61 datasheet, SMAJ6.5C-E3/61 pinout, SMAJ6.5C-E3/61 application, or SMAJ6.5C-E3/61 equivalent, key selection criteria include bi-directional surge capability, low clamping ratio (VC/VWM = 1.89), RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 7.22 V and 8.82 V at 10 mA test current. Its clamping behavior is defined under standardized 10/1000 µs surge conditions, delivering consistent protection without polarity dependence.
Thermal performance is characterized by 120 °C/W junction-to-ambient thermal resistance (RθJA) on 0.2 × 0.2" copper pads, and it supports continuous operation from −55 °C to +150 °C junction temperature. The device meets JESD201 Class 1A whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum steady-state reverse voltage before conduction begins; sets operating margin for protected circuitry. |
| VC @ IPPM | 12.3 V - Clamped voltage during 32.5 A 10/1000 µs surge; defines worst-case overvoltage seen by downstream components. |
| IPPM | 32.5 A - Peak surge current handled at rated clamping voltage; determines robustness against lightning or ESD events. |
| PPPM | 400 W - Peak pulse power dissipation capability; enables protection of low-voltage interfaces without derating below 78 V. |
| TJ Range | −55 °C to +150 °C - Full industrial/automotive temperature range; ensures reliability in under-hood or factory-floor environments. |
| Package | DO-214AC (SMA) - Standard surface-mount outline with 2.54 mm lead pitch; compatible with JEDEC-standard reflow profiles. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two unmarked terminals; bi-directional symmetry means no cathode band or polarity marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; surge current flows bidirectionally through the same junction structure. |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor; requires no grounding or isolation design consideration. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power | Supports high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) on 5–12 V rails without external series impedance. |
| Low clamping ratio (1.89) | Minimizes overvoltage stress on 3.3 V or 5 V logic ICs when used with appropriate trace inductance and layout. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
| RoHS-compliant matte tin leads | Ensures solderability per J-STD-002 and eliminates post-reflow whisker risk in long-life applications. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure/temperature sensors exposed to load dump and inductive switching noise in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point, shunting transients before reaching ADC input or signal conditioner. Use Value: Maintains signal integrity under ISO 16750-2 transient test conditions while avoiding false triggering due to its 6.5 V VWM margin above nominal 5 V sensor supply. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled surges in factory automation PLC modules. IC Role / Device Role / Timing Role: Paired SMAJ6.5C-E3/61 devices (one per line) provide symmetrical clamping referenced to common-mode ground. Use Value: Limits differential overvoltage to <25 V during IEC 61000-4-2 contact discharge, preserving CAN transceiver functionality without adding series resistance. |
| Consumer USB Port ESD Protection | Smart Meter Power Supply Input Clamp |
|
Use Scenario: Secondary-level ESD protection on USB D+/D− lines behind primary polymer fuse or ferrite bead. IC Role / Device Role / Timing Role: Fast-response TVS absorbing >8 kV HBM ESD pulses before they reach USB PHY transceiver. Use Value: 12.3 V clamping ensures safe margin below USB 2.0 eye diagram limits (1.3 V differential swing + 0.3 V noise), preventing data corruption. |
Use Scenario: Surge suppression on 24 V DC input stage of utility smart meters subjected to induced lightning surges. IC Role / Device Role / Timing Role: First-line clamp ahead of DC-DC converter, limiting input voltage excursions during 10/1000 µs surges. Use Value: 400 W rating sustains multiple 1 kV/500 A surges per IEC 61000-4-5 Level 3, extending meter field lifetime without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA-E3/61 | Identical electrical specs and package; CA suffix denotes same bi-directional construction per Vishay ordering nomenclature. | No functional difference; CA and C suffixes are interchangeable per Vishay Document 88390 revision 29-Oct-08. | Select SMAJ6.5CA-E3/61 only if legacy BOM or distributor inventory mandates CA suffix; otherwise SMAJ6.5C-E3/61 is fully equivalent. |
| SMBJ6.5C-E3/52 | Same VWM and VC, but SMB package (DO-214AA) with higher 600 W PPPM rating and 10% larger footprint. | Better suited for higher-energy surges where board space permits; not drop-in due to different pad layout and thermal mass. | Choose SMBJ6.5C-E3/52 when system-level testing requires >400 W surge handling; verify PCB land pattern and reflow profile compatibility. |
Compared with SMAJ6.5C-E3/61, SMAJ6.5CA-E3/61 offers identical protection performance in the same form factor, while SMBJ6.5C-E3/52 trades compactness for enhanced energy absorption - making the former ideal for footprint-constrained designs and the latter for high-reliability industrial inputs.
Availability
SMAJ6.5C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB ports, and smart meter power inputs requiring stable component supply across extended production cycles.
Supply support for SMAJ6.5C-E3/61 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, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMAJ series was developed specifically for surface-mount transient suppression in space-constrained, high-volume electronics - emphasizing automated assembly compatibility, MSL Level 1 robustness, and repeatable clamping performance across temperature.
FAQ
What is the clamping voltage of SMAJ6.5C-E3/61 under a 10/1000 µs surge?
The SMAJ6.5C-E3/61 clamps to a maximum of 12.3 V when subjected to its rated peak pulse current of 32.5 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on recommended 0.2 × 0.2" copper pads and represents the upper limit of overvoltage imposed on protected circuitry during surge events. The SMAJ6.5C-E3/61 maintains this clamping performance across its full operating temperature range.
Is SMAJ6.5C-E3/61 suitable for bi-directional signal line protection?
Yes, SMAJ6.5C-E3/61 is explicitly designed as a bi-directional TVS diode, with symmetrical electrical characteristics in both forward and reverse directions. Its breakdown voltage (7.22–8.82 V) and clamping behavior apply equally regardless of polarity, making it ideal for protecting AC-coupled interfaces like RS-485, CAN, or audio lines. The SMAJ6.5C-E3/61 has no polarity marking on the DO-214AC package, confirming its bi-directional nature.
Does SMAJ6.5C-E3/61 meet automotive qualification standards?
The base SMAJ6.5C-E3/61 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive applications requiring qualification, Vishay offers the SMAJ6.5CHE3/61 variant (HE3 suffix), which is AEC-Q101 certified and rated for high-reliability use. Engineers specifying SMAJ6.5C-E3/61 should confirm whether end-equipment requirements mandate AEC-Q101 compliance before final selection.
What is the maximum leakage current of SMAJ6.5C-E3/61 at its stand-off voltage?
At its 6.5 V stand-off voltage (VWM), the SMAJ6.5C-E3/61 exhibits a maximum reverse leakage current (ID) of 500 µA at TA = 25 °C. This value is confirmed in Vishay Document 88390, Table "ELECTRICAL CHARACTERISTICS", and remains within acceptable limits for low-power sensor and communication circuits where standby current budget is critical. The SMAJ6.5C-E3/61 leakage increases predictably with temperature but stays below 1 mA up to +125 °C.
Can SMAJ6.5C-E3/61 be used in place of SMAJ6.5A-E3/61?
No - SMAJ6.5C-E3/61 and SMAJ6.5A-E3/61 are not interchangeable. The "C" suffix indicates bi-directional construction, while "A" denotes uni-directional operation with a cathode band marking. Substituting SMAJ6.5C-E3/61 for SMAJ6.5A-E3/61 would eliminate polarity-dependent blocking behavior and may compromise protection in DC-biased circuits. Always match suffix type to circuit topology; the SMAJ6.5C-E3/61 must only replace other "C" or "CA" variants.
SMAJ6.5C-E3/61 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.5C-E3/61 FAQ
1.How can I place an order for SMAJ6.5C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5C-E3/61 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 SMAJ6.5C-E3/61 reliable?
The price and inventory of SMAJ6.5C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ6.5C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5C-E3/61?
SMAJ6.5C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5C-E3/61 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 SMAJ6.5C-E3/61?
For technical support, including SMAJ6.5C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5C-E3/61 requirements.
6.How does Aetrix verify that SMAJ6.5C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5C-E3/61 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 SMAJ6.5C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ6.5C-E3/61?
All SMAJ6.5C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5C-E3/61, 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 SMAJ6.5C-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ6.5C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5C-E3/61 Tags
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