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Vishay General Semiconductor - Diodes Division SMAJ10CA-E3/5A
- Part No.:
- SMAJ10CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10CA-E3/5A.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,740
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Product details
Overview
SMAJ10CA-E3/5A 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 stand-off 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 (10/1000 μs waveform), targeting protection of MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the SMAJ10CA-E3/5A datasheet, SMAJ10CA-E3/5A pinout, SMAJ10CA-E3/5A application, or SMAJ10CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 23.5 A surge, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient overvoltage events, leveraging an avalanche junction to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
The SMAJ10CA-E3/5A delivers fast response time (<1 ns), low incremental surge resistance, and stable thermal performance up to +150 °C junction temperature. It meets J-STD-020 MSL Level 1 and supports reflow soldering with peak temperature up to 260 °C, making it suitable for high-reliability commercial and AEC-Q101-qualified automotive designs when ordered with HE3/HM3 suffixes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR min/max | 11.1 V / 12.3 V at 1 mA - Confirmed breakdown threshold ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 17.0 V at 23.5 A - Clamping voltage under full-rated 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 400 W (≤78 V) - Peak pulse power handling per 10/1000 μs waveform; defines transient energy absorption capacity. |
| ID @ VWM | 1.0 μA - Reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient environments. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal derating in real layouts. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002/JESD 22-B102 solderability standards. Bidirectional construction means no cathode marking - both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as input/output for surge current; no polarity dependency simplifies layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 12 V supply rails without derating. |
| 17.0 V clamping voltage @ 23.5 A | Limits voltage overshoot below 18 V during worst-case transients, safeguarding 16 V-rated logic and analog ICs. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow assembly without moisture-related popcorn failure or delamination. |
| Glass passivated junction | Ensures long-term stability of breakdown characteristics and low leakage across temperature and lifetime. |
| AEC-Q101 qualification option (HE3/HM3) | Validates reliability for automotive powertrain and body electronics where qualification evidence is mandatory. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Prevents latch-up or permanent damage to transceivers by limiting transient voltage to ≤17.0 V while maintaining signal fidelity during normal operation. |
Use Scenario: Shielding 24 V digital input modules in programmable logic controllers from field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to shunt surge energy before reaching optocoupler or Schmitt trigger inputs. Use Value: Enables >100,000 surge cycles at 23.5 A without parameter shift, ensuring long-term system uptime in factory automation environments. |
| Consumer Power Adapter Output Protection | Telecom Line Interface Surge Guard |
Use Scenario: Safeguarding USB-C PD and 5–20 V DC-DC converter outputs against ESD and accidental AC mains coupling in wall adapters and chargers. IC Role / Device Role / Timing Role: Final-stage clamping device located immediately after output filter capacitor, before connector. Use Value: Maintains <1.0 μA leakage at 10 V, avoiding standby current penalties while delivering sub-1 ns response to 8 kV ESD events. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges on RJ-45 or telephone line interfaces. IC Role / Device Role / Timing Role: Primary protection element mounted directly at connector entry point, coordinated with GDT or MOV secondary stages. Use Value: Symmetrical bidirectional clamping ensures equal protection for tip/ring polarity reversal common in telecom wiring practices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10CA-M3/5A | Halogen-free, RoHS-compliant variant with identical electrical specs and package; same thermal and surge ratings. | No difference in protection performance; selected only when halogen-free compliance is mandated by end-equipment environmental policy. | Choose SMAJ10CA-M3/5A if halogen-free material declaration is required for final product certification. |
| P6SMB10CA | Same VWM (10 V) and VC (17.0 V), but lower PPPM (600 W) and higher RθJA (140 °C/W); DO-214AA (SMB) package, 2.5 mm wider. | Higher thermal resistance requires larger copper area for equivalent power dissipation; SMB footprint incompatible with SMA-layout PCBs. | Select P6SMB10CA only when board space allows SMB package and higher surge margin (600 W) justifies layout redesign. |
Compared with SMAJ10CA-E3/5A, the M3 variant offers identical protection with halogen-free materials, while P6SMB10CA trades package compatibility and thermal efficiency for higher peak power - requiring careful thermal validation and footprint adaptation.
Availability
SMAJ10CA-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter designs requiring stable component supply, RoHS compliance, and surface-mount manufacturability.
Supply support for SMAJ10CA-E3/5A 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, precision, and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification readiness are critical design requirements.
FAQ
What is the clamping voltage of SMAJ10CA-E3/5A at its rated peak pulse current?
The SMAJ10CA-E3/5A has a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) of 23.5 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience more than 17.0 V during such transient events, making SMAJ10CA-E3/5A suitable for safeguarding 16 V-tolerant ICs and microcontrollers.
Is SMAJ10CA-E3/5A suitable for automotive applications?
SMAJ10CA-E3/5A itself is commercial-grade; however, the identical device with HE3 or HM3 suffix (e.g., SMAJ10CAHE3_A/I) is AEC-Q101 qualified and approved for automotive use. The SMAJ10CA-E3/5A shares the same electrical characteristics, package, and thermal behavior - only the qualification documentation and traceability differ. For non-safety-critical automotive subsystems, SMAJ10CA-E3/5A may be used pending internal validation, but SMAJ10CA-E3/5A must not be assumed qualified without HE3/HM3 ordering code.
Does SMAJ10CA-E3/5A have polarity markings on the package?
No, SMAJ10CA-E3/5A does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMAJ10A), which feature a cathode band, the CA version uses a symmetrical junction structure - both terminals perform identically regardless of applied voltage polarity. This eliminates orientation errors during automated placement and simplifies schematic symbol usage.
What is the maximum operating temperature for SMAJ10CA-E3/5A?
The SMAJ10CA-E3/5A has a maximum junction temperature (TJ max) of +150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This rating allows reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, and thermal design must account for RθJA = 120 °C/W on standard 0.2" × 0.2" copper pads.
How does the 10/1000 μs waveform rating apply to SMAJ10CA-E3/5A's surge capability?
The 400 W peak pulse power rating for SMAJ10CA-E3/5A is defined specifically for the 10/1000 μs double-exponential current waveform per IEC 61000-4-5 and ANSI/IEEE C62.35. This waveform simulates lightning-induced surges and heavy inductive switching transients. At 23.5 A peak current, the device clamps to ≤17.0 V for the full duration, enabling robust protection without degradation - provided duty cycle remains ≤0.01 % to avoid thermal accumulation.
SMAJ10CA-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ10CA-E3/5A FAQ
1.How can I place an order for SMAJ10CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10CA-E3/5A 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 SMAJ10CA-E3/5A reliable?
The price and inventory of SMAJ10CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ10CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10CA-E3/5A?
SMAJ10CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10CA-E3/5A 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 SMAJ10CA-E3/5A?
For technical support, including SMAJ10CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10CA-E3/5A requirements.
6.How does Aetrix verify that SMAJ10CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ10CA-E3/5A 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 SMAJ10CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ10CA-E3/5A?
All SMAJ10CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10CA-E3/5A, 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 SMAJ10CA-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ10CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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