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Vishay General Semiconductor - Diodes Division SMAJ10CAHE3_A/I
- Part No.:
- SMAJ10CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10CAHE3_A/I.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,420
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Product details
Overview
SMAJ10CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features 10 V standoff voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 1 mA, 17.0 V maximum clamping voltage (VC) at 23.5 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMAJ10CAHE3_A/I datasheet, SMAJ10CAHE3_A/I pinout, SMAJ10CAHE3_A/I application, or SMAJ10CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.53), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports fast energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its 10/1000 μs waveform response delivers repeatable 400 W surge handling up to 0.01% duty cycle, derating linearly above 25 °C ambient per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR min/max | 11.1 V / 12.3 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 17.0 V at 23.5 A - Clamped voltage seen by protected circuit under full-rated 10/1000 μs surge; determines downstream component stress. |
| PPPM | 400 W - Peak transient power dissipation capability with standardized 10/1000 μs waveform; validates robustness against IEC 61000-4-5 surges. |
| ID @ VWM | ≤1.0 μA - Reverse leakage current at standoff voltage; ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; enables reliable operation in under-hood automotive or industrial environments. |
| MSL Level | Level 1 (per J-STD-020) - Allows unlimited floor life and reflow at peak 260 °C; eliminates bake requirements prior to assembly. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles in bidirectional clamping; no cathode band marking required - simplifies layout and orientation verification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV surge) on 50 Ω source impedance without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.53) | Minimizes voltage overshoot across protected ICs - critical for safeguarding 3.3 V or 5 V logic rails with tight absolute maximum ratings. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress; reduces parameter drift over 10+ year service life. |
| Matte tin-plated leads | Complies with J-STD-002 and JESD 22-B102 for solderability; supports lead-free reflow profiles up to 260 °C peak without dewetting or voiding. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 12 V/24 V system surges up to 400 W while meeting AEC-Q101 reliability requirements for 15-year automotive service life. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each isolated input channel, coordinated with upstream fusing and optocoupler isolation. Use Value: Limits voltage excursion to ≤17.0 V during 10/1000 μs surges, preventing latch-up or permanent damage to microcontroller GPIO pins. |
| Consumer Power Adapter Output | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression on 5 V/9 V/12 V USB-C PD and wall adapter outputs exposed to user-insertion ESD and cable coupling noise. IC Role / Device Role / Timing Role: Final-stage TVS placed adjacent to output connector to absorb fast-rising ESD events (IEC 61000-4-2 ±8 kV contact) before reaching connected devices. Use Value: Sub-1 ns response time and <1.0 μA leakage preserve efficiency and standby current compliance in Energy Star–certified adapters. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 or telephone jacks in residential gateways and VoIP phones. IC Role / Device Role / Timing Role: Differential-mode clamp across twisted-pair lines, used in conjunction with common-mode chokes and GDTs for full-spectrum surge immunity. Use Value: Symmetrical 10 V standoff and 17.0 V clamping enable balanced protection of full-duplex data lines without signal distortion or DC bias shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10CA-M3 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; differs only in material composition (no brominated flame retardants). | No functional difference in circuit protection performance; selected where halogen-free compliance is mandated by OEM environmental specifications. | Choose SMAJ10CA-M3 when halogen-free materials are contractually required; otherwise SMAJ10CAHE3_A/I offers same reliability with broader supply chain traceability. |
| SMBJ10CAHE3_A/I | Same VWM (10 V), VBR (11.1–12.3 V), and VC (17.0 V), but in SMB (DO-214AA) package - larger footprint (4.58 mm × 3.94 mm vs. 4.50 mm × 2.79 mm) and higher PPPM (600 W). | Higher surge capacity suits applications with more severe threat levels (e.g., outdoor telecom cabinets); requires PCB layout revision due to larger body and different pad dimensions. | Select SMBJ10CAHE3_A/I only when 600 W surge rating is needed and board space permits larger package; SMAJ10CAHE3_A/I remains optimal for space-constrained automotive and portable designs. |
Compared with SMAJ10CA-M3, SMAJ10CAHE3_A/I provides identical clamping performance with standard RoHS compliance, while SMBJ10CAHE3_A/I trades compact size for higher surge margin - making SMAJ10CAHE3_A/I the preferred choice for AEC-Q101–required, space-sensitive 10 V bidirectional protection.
Availability
SMAJ10CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter outputs requiring stable component supply, AEC-Q101 validation, and consistent TVS clamping behavior across production lots.
Supply support for SMAJ10CAHE3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping voltage, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMAJ10CAHE3_A/I at its rated peak pulse current?
The SMAJ10CAHE3_A/I has a maximum clamping voltage (VC) of 17.0 V at its rated peak pulse current (IPPM) of 23.5 A with a 10/1000 μs waveform. This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMAJ10CAHE3_A/I maintains this clamping performance across its qualified temperature range of –55 °C to +150 °C.
Is SMAJ10CAHE3_A/I suitable for automotive applications?
Yes, SMAJ10CAHE3_A/I is AEC-Q101 qualified and specifically designed for automotive use - validated for temperature cycling, highly accelerated life testing, and ESD robustness per the AEC-Q101 stress test standard. Its bidirectional architecture, 10 V standoff, and 17.0 V clamping make it appropriate for protecting CAN transceivers, LIN bus nodes, and sensor signal lines in engine control, body electronics, and ADAS subsystems.
What does the "HE3" suffix indicate in SMAJ10CAHE3_A/I?
The "HE3" suffix in SMAJ10CAHE3_A/I denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade variants (E3) and halogen-free versions (HM3). The "A/I" further specifies packaging: 13-inch tape-and-reel format with 7500 units per reel. This ordering code ensures traceable sourcing, automotive-grade reliability, and compatibility with high-volume SMT assembly lines.
How does SMAJ10CAHE3_A/I differ from unidirectional SMAJ10AHE3_A/I?
SMAJ10CAHE3_A/I is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas SMAJ10AHE3_A/I is unidirectional with a cathode band and conducts only in reverse bias. The SMAJ10CAHE3_A/I supports AC-coupled or differential signal protection (e.g., RS-485, CAN), while SMAJ10AHE3_A/I is intended for DC rail protection where polarity is fixed. Their VWM, VBR, and VC values are closely matched but not identical due to structural differences.
What is the thermal resistance of SMAJ10CAHE3_A/I under standard mounting conditions?
SMAJ10CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - per the manufacturer's recommended layout. Its junction-to-lead resistance (RθJL) is 30 °C/W, supporting effective heat transfer to PCB copper. These values are essential for calculating safe power derating above 25 °C ambient, especially in sealed enclosures or high-density layouts.
SMAJ10CAHE3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 23.5A
- 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)
SMAJ10CAHE3_A/I FAQ
1.How can I place an order for SMAJ10CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10CAHE3_A/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 SMAJ10CAHE3_A/I reliable?
The price and inventory of SMAJ10CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ10CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10CAHE3_A/I?
SMAJ10CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10CAHE3_A/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 SMAJ10CAHE3_A/I?
For technical support, including SMAJ10CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10CAHE3_A/I requirements.
6.How does Aetrix verify that SMAJ10CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ10CAHE3_A/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 SMAJ10CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ10CAHE3_A/I?
All SMAJ10CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10CAHE3_A/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 SMAJ10CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMAJ10CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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