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Vishay General Semiconductor - Diodes Division SMAJ10CAHE3/5A
- Part No.:
- SMAJ10CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10CAHE3/5A.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,207
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Product details
Overview
SMAJ10CAHE3/5A 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 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 (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMAJ10CAHE3/5A datasheet, SMAJ10CAHE3/5A pinout, SMAJ10CAHE3/5A application, or SMAJ10CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 17.0 V clamping under 23.5 A surge, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
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 dissipation during 10/1000 μs transients.
The device is rated for 400 W peak pulse power up to 78 V and derates to 300 W above that threshold, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive use - confirmed by HE3 suffix and Vishay's ordering code documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 11.1 V / 12.3 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 17.0 V at 23.5 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream components |
| PPPM | 400 W (≤78 V) - peak transient energy absorption capacity under standard waveform |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Bidirectional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identical clamping roles; no cathode band marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) when mounted on 5 mm × 5 mm copper pads |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak, compatible with standard SMT assembly processes |
| Glass passivated junction | Ensures stable VBR over time and temperature, with low parameter drift in harsh environments |
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: Standoff-clamp TVS placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: 17.0 V clamping ensures microcontroller GPIOs and ADC inputs remain below absolute maximum ratings during 10/1000 μs surges up to 23.5 A. | Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor on each channel, paired with series current-limiting resistor for overvoltage immunity. Use Value: Bidirectional symmetry allows single-component protection of both sourcing and sinking inputs without polarity concerns. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Clamping output overvoltage events in USB-C PD and 12 V wall adapters caused by feedback loop failure or transient coupling. IC Role / Device Role / Timing Role: Secondary-side TVS across regulated output rails to prevent damage to connected devices during fault conditions. Use Value: 10 V VWM aligns with nominal 12 V output, allowing normal operation while clamping >17 V excursions within 1 ns response time. | Use Scenario: Protecting Ethernet PHY interface pins (e.g., MDI pairs) from lightning-induced surges and ESD per IEC 61000-4-2/4-5. IC Role / Device Role / Timing Role: First-line defense between RJ45 magnetics and PHY IC, absorbing common-mode transients before signal conditioning. Use Value: Low 1.0 μA leakage at 10 V VWM prevents DC bias shift on transformer-coupled lines, preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10CA-E3/5A | No AEC-Q101 qualification; commercial-grade only | Not suitable for automotive production; acceptable for industrial/commercial prototypes | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive reliability validation |
| SMBJ10CAHE3/5A | Higher 600 W PPPM rating; larger SMB (DO-214AA) package | Requires PCB layout change; better suited for higher-energy surges in motor drives | Choose when system-level surge testing exceeds 400 W and board space permits larger footprint |
Compared with SMAJ10CA-E3/5A, the SMAJ10CAHE3/5A adds AEC-Q101 qualification for automotive use; compared with SMBJ10CAHE3/5A, it trades 200 W pulse power for 30 % smaller PCB area in SMA package - critical for compact sensor modules.
Availability
SMAJ10CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom line interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMAJ10CAHE3/5A 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 and application-specific performance.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where ESD, lightning, and switching surges threaten system uptime and safety.
FAQ
What does the 'HE3' suffix indicate in SMAJ10CAHE3/5A?
The 'HE3' suffix denotes RoHS-compliant construction with AEC-Q101 qualification. 'H' indicates AEC-Q101 compliance, 'E3' specifies RoHS-compliant matte tin plating. This distinguishes SMAJ10CAHE3/5A from commercial-grade variants like SMAJ10CA-E3/5A and confirms suitability for automotive production. The SMAJ10CAHE3/5A meets stress tests including temperature cycling, highly accelerated life testing, and ESD per AEC-Q101 Rev G.
Is SMAJ10CAHE3/5A unidirectional or bidirectional?
SMAJ10CAHE3/5A is bidirectional, as indicated by the 'CA' suffix. Its symmetrical VBR (11.1–12.3 V) and VC characteristics apply identically in both directions, making it ideal for protecting AC-coupled signals, differential buses (e.g., CAN, RS-485), and floating inputs. Unlike unidirectional 'A' versions, SMAJ10CAHE3/5A has no cathode marking and requires no polarity alignment during placement.
What is the maximum clamping voltage of SMAJ10CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of SMAJ10CAHE3/5A is 17.0 V at 23.5 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components experience no more than 17.0 V during specified surge events - critical for safeguarding 3.3 V or 5 V logic interfaces. The SMAJ10CAHE3/5A achieves this with low incremental surge resistance and fast sub-nanosecond response.
Can SMAJ10CAHE3/5A be used in place of SMAJ10AHE3/5A?
No - SMAJ10CAHE3/5A and SMAJ10AHE3/5A are not interchangeable. SMAJ10AHE3/5A is unidirectional (cathode-marked, conducts only in reverse), while SMAJ10CAHE3/5A is bidirectional (no marking, symmetrical conduction). Substituting one for the other risks incorrect clamping behavior: using the unidirectional version on an AC line may fail to protect negative transients, and vice versa. Always verify polarity requirements before selecting SMAJ10CAHE3/5A or SMAJ10AHE3/5A.
What PCB pad layout is recommended for optimal thermal and surge performance of SMAJ10CAHE3/5A?
Vishay specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for SMAJ10CAHE3/5A to achieve rated 400 W peak pulse power. Smaller pads reduce heat dissipation and cause premature thermal runaway during repetitive surges. The SMA (DO-214AC) package relies on copper area for both thermal mass and current spreading - undersized pads increase junction temperature beyond 150 °C, degrading clamping consistency. For automotive designs, ensure pads connect to internal ground/power planes via multiple thermal vias.
SMAJ10CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMAJ10CAHE3/5A FAQ
1.How can I place an order for SMAJ10CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10CAHE3/5A 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 SMAJ10CAHE3/5A reliable?
The price and inventory of SMAJ10CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ10CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10CAHE3/5A?
SMAJ10CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10CAHE3/5A 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 SMAJ10CAHE3/5A?
For technical support, including SMAJ10CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10CAHE3/5A requirements.
6.How does Aetrix verify that SMAJ10CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ10CAHE3/5A 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 SMAJ10CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ10CAHE3/5A?
All SMAJ10CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10CAHE3/5A, 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 SMAJ10CAHE3/5A part is unused and in its original packaging.
Return procedure for SMAJ10CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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