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Vishay General Semiconductor - Diodes Division SMAJ6.0CAHM3/I
- Part No.:
- SMAJ6.0CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.0CAHM3/I.pdf
- Description:
- TVS DIODE 6VWM 10.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,175
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Product details
Overview
SMAJ6.0CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping ESD and surge transients on signal/power lines. It features 6.0 V stand-off voltage (VWM), 6.67–7.37 V breakdown voltage (VBR) at 10 mA, 400 W peak pulse power (10/1000 μs), and clamps to ≤10.3 V at 38.8 A peak current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMAJ6.0CAHM3/I datasheet, SMAJ6.0CAHM3/I pinout, SMAJ6.0CAHM3/I application, or SMAJ6.0CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), MSL Level 1 rating, and compatibility with 0.2" × 0.2" copper pad layouts per JEDEC standards.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding VWM (6.0 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5 μA at VWM).
Thermal design relies on RθJA = 120 °C/W (typ.) and RθJL = 30 °C/W (typ.), requiring minimum 0.2" × 0.2" copper pads per terminal for rated 400 W pulse handling. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 6.67 V / 7.37 V at 10 mA - guaranteed avalanche onset range under standardized test conditions |
| VC @ IPPM | ≤10.3 V at 38.8 A - clamped voltage during 400 W 10/1000 μs surge, defining worst-case stress on downstream ICs |
| PPPM | 400 W (10/1000 μs) - peak transient energy absorption capacity without failure |
| ID @ VWM | ≤5 μA - reverse leakage current at stand-off voltage, critical for low-power sensor bias integrity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - surface-mount outline with 2.54 mm lead pitch, compatible with automated placement |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Shunts positive surges to ground/reference rail; symmetrical with cathode due to bidirectional structure |
| Cathode | Transient current entry (negative half-cycle) | Shunts negative surges to ground/reference rail; electrically identical to anode in CA configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental requirements and end-of-life recycling mandates |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during fast transients, protecting 3.3 V and 5 V logic interfaces |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed between signal line and ground, responding within <1 ns to transients. Use Value: Limits induced voltage to ≤10.3 V, preventing latch-up or gate oxide damage in 5 V tolerant transceivers. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff voltage (6.0 V) matches 5 V logic thresholds; clamps 1 kV/500 A transients per IEC 61000-4-4. Use Value: Enables robust operation in factory-floor environments with minimal PCB footprint and no series impedance. |
| Consumer USB Port ESD Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines upstream of integrated port protectors. IC Role / Device Role / Timing Role: Fast-response TVS absorbing ±15 kV contact discharge (IEC 61000-4-2) without degrading signal integrity. Use Value: Low capacitance (≈200 pF at 0 V) avoids signal rise-time degradation while maintaining 6.0 V DC operating margin. | Use Scenario: Overvoltage protection on low-voltage telecom interface circuits (e.g., RS-485, VDSL line drivers). IC Role / Device Role / Timing Role: Bidirectional clamping prevents damage from lightning-induced common-mode surges on twisted-pair lines. Use Value: Symmetric breakdown ensures equal protection for both polarities, critical for full-duplex communication links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0CAHE3/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial/industrial use only; not approved for automotive ECUs | Select when halogen-free content or automotive qualification is not required |
| SMBJ6.0CAHM3/I | Same electrical specs but SMB (DO-214AA) package - 25 % larger footprint, higher thermal mass | Better thermal dissipation for high-duty-cycle surges; requires PCB layout change | Choose when 400 W surge must be sustained at elevated ambient temperatures (>85 °C) |
Compared with SMAJ6.0CAHM3/I, SMAJ6.0CAHE3/I offers identical clamping performance without halogen-free or automotive qualification, while SMBJ6.0CAHM3/I trades compactness for improved thermal derating - making SMAJ6.0CAHM3/I optimal for space-constrained AEC-Q101 designs needing minimal board area.
Availability
SMAJ6.0CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer USB port protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMAJ6.0CAHM3/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against ESD, lightning, and switching surges is mission-critical.
FAQ
What does the 'CA' suffix indicate in SMAJ6.0CAHM3/I?
The 'CA' suffix denotes a bidirectional configuration: SMAJ6.0CAHM3/I provides symmetrical clamping for both positive and negative transients, unlike unidirectional 'A' variants. This makes SMAJ6.0CAHM3/I ideal for AC-coupled or floating signal lines where polarity reversal is possible, such as RS-485 buses or differential sensor outputs.
Is SMAJ6.0CAHM3/I qualified for automotive applications?
Yes, SMAJ6.0CAHM3/I is AEC-Q101 qualified, as confirmed by the 'HM3' suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). This certification validates its reliability for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces under extended temperature and vibration stress.
What is the maximum clamping voltage of SMAJ6.0CAHM3/I under surge conditions?
The maximum clamping voltage (VC) of SMAJ6.0CAHM3/I is 10.3 V at 38.8 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 400 W transient event, ensuring compatibility with 5 V logic families and analog front-ends.
How does the HM3 suffix differ from E3 or M3 in SMAJ6.0CAHM3/I?
The HM3 suffix in SMAJ6.0CAHM3/I specifies halogen-free, RoHS-compliant construction plus AEC-Q101 qualification. In contrast, E3 denotes RoHS-compliant only (commercial grade), and M3 adds halogen-free but excludes automotive qualification. Thus, SMAJ6.0CAHM3/I meets strict automotive environmental and reliability requirements not covered by E3 or M3 variants.
Can SMAJ6.0CAHM3/I be used in place of SMAJ6.0A in a design?
No - SMAJ6.0CAHM3/I is bidirectional, while SMAJ6.0A is unidirectional. Substituting SMAJ6.0CAHM3/I for SMAJ6.0A would eliminate polarity dependence but may increase leakage in DC-biased circuits and alter clamping behavior on grounded lines. Always verify circuit topology and bias conditions before interchanging SMAJ6.0CAHM3/I with unidirectional variants.
SMAJ6.0CAHM3/I 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):
- 6V
- Voltage - Breakdown (Min):
- 6.67V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ6.0CAHM3/I FAQ
1.How can I place an order for SMAJ6.0CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.0CAHM3/I 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 SMAJ6.0CAHM3/I reliable?
The price and inventory of SMAJ6.0CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.0CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMAJ6.0CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.0CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.0CAHM3/I?
SMAJ6.0CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.0CAHM3/I 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 SMAJ6.0CAHM3/I?
For technical support, including SMAJ6.0CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.0CAHM3/I requirements.
6.How does Aetrix verify that SMAJ6.0CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMAJ6.0CAHM3/I 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 SMAJ6.0CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMAJ6.0CAHM3/I?
All SMAJ6.0CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.0CAHM3/I, 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 SMAJ6.0CAHM3/I part is unused and in its original packaging.
Return procedure for SMAJ6.0CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.0CAHM3/I Tags
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