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Vishay General Semiconductor - Diodes Division SMAJ16CA-E3/61
- Part No.:
- SMAJ16CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CA-E3/61.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:23,747
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Product details
Overview
SMAJ16CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection on signal and power lines. It features a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the SMAJ16CA-E3/61 datasheet, SMAJ16CA-E3/61 pinout, SMAJ16CA-E3/61 application, or SMAJ16CA-E3/61 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.625), AEC-Q101 qualification eligibility (via HE3 suffix variants), and SMA (DO-214AC) package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical breakdown (VBR min/max = 17.8 V / 19.7 V at 1 mA) and clamping behavior in either direction. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced transients (IEC 61000-4-5).
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation from –55 °C to +150 °C. The device derates linearly above 25 °C ambient, maintaining 300 W pulse capability above 78 V and full 400 W rating at ≤78 V - consistent with its placement on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin for 12–15 V nominal systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - Confirmed bidirectional breakdown range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 26.0 V at 15.4 A - Clamping voltage under 10/1000 μs surge; limits downstream IC stress to <26 V during 400 W transient. |
| PPPM | 400 W - Peak pulse power handling (10/1000 μs); sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges. |
| IPPM | 15.4 A - Peak surge current corresponding to VC; directly usable for PCB trace sizing and fuse coordination. |
| Junction Temp | –55 °C to +150 °C - Full automotive-grade temperature range; supports under-hood and industrial control cabinet deployment. |
| Package | SMA (DO-214AC) - Standardized 2-pin surface-mount outline; compatible with IPC-7351B footprint and J-STD-020 reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; meets UL 94 V-0, MSL Level 1 (260 °C peak), and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 (cathode band side not marked) | Bidirectional symmetry means no polarity marking; either terminal serves as anode or cathode depending on transient polarity. |
| Anode | Terminal 2 (opposite end) | Identical electrical role to Terminal 1; enables symmetrical clamping without orientation constraints during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware routing in differential or AC-coupled lines. |
| 400 W peak pulse power | Rated at 10/1000 μs waveform - handles high-energy transients common in automotive load-dump and industrial motor switching. |
| Low clamping ratio | VC/VWM = 1.625 - minimizes overvoltage overshoot relative to system rail, protecting 16 V-tolerant interface ICs. |
| AEC-Q101 readiness | HE3/HM3 variants qualified - enables drop-in use in automotive ECUs when specified with appropriate suffix (not applicable to E3/61 base variant). |
| Automated placement support | Low-profile SMA package with J-STD-002 solderability - compatible with high-speed pick-and-place and lead-free reflow (260 °C peak). |
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 ESD in engine control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point, shunting transients before reaching PHY or ADC front-end. Use Value: Limits induced voltage to ≤26.0 V during 15.4 A surge, preserving integrity of 3.3 V/5 V microcontrollers and 12-bit SAR ADCs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and ground, activated within picoseconds to clamp >1 kV spikes. Use Value: Maintains 16 V working margin while clamping to 26.0 V, ensuring compatibility with standard 24 V optocoupler input thresholds. |
| Telecom Line Interface | Consumer USB Port Protection |
|
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in network edge devices from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair lines, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: Withstands 400 W pulses per IEC 61000-4-5 Ed.3 Level 3 (2 Ω source impedance), reducing system-level failure rate by >90% in field deployments. |
Use Scenario: ESD hardening of USB 2.0 data lines (D+/D−) and VBUS in portable media players and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed adjacent to connector, meeting IEC 61000-4-2 ±15 kV contact discharge. Use Value: Delivers sub-1.0 μA leakage at 16 V and <1.0 ps response - preserves signal integrity without degrading 480 Mbps data eye. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package. | No functional difference; selected where halogen-free compliance is mandated (e.g., EU public infrastructure projects). | Direct material substitution when halogen-free certification is required; same thermal and mechanical behavior. |
| SMAJ16A-E3/61 | Unidirectional version - cathode-marked, asymmetric clamping (forward VF = 3.5 V at 25 A; no reverse conduction). | Only suitable for DC-biased lines with defined polarity; cannot replace SMAJ16CA-E3/61 in AC or floating signal paths. | Select only for unidirectional rails (e.g., 12 V supply input); requires polarity-aware layout and failsafe verification for reverse transients. |
Compared with SMAJ16CA-E3/61, the M3/61 variant offers identical protection performance with halogen-free construction, while the SMAJ16A-E3/61 provides unidirectional clamping - requiring careful circuit polarity validation and offering no reverse-path surge handling.
Availability
SMAJ16CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, RoHS-compliant commercial-grade TVS diodes, and SMA package compatibility with high-volume SMT production.
Supply support for SMAJ16CA-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive qualification.
The SMAJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatable clamping, and AEC-Q101 scalability are critical design requirements.
FAQ
What is the clamping voltage of SMAJ16CA-E3/61 under a 10/1000 μs surge?
The SMAJ16CA-E3/61 clamps to a maximum of 26.0 V when subjected to its rated peak pulse current of 15.4 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88390 and reflects worst-case behavior at TA = 25 °C with proper PCB pad layout (5.0 mm × 5.0 mm copper). The SMAJ16CA-E3/61 maintains this clamping performance bidirectionally, making it suitable for AC-coupled or floating signal lines.
Is SMAJ16CA-E3/61 AEC-Q101 qualified?
The SMAJ16CA-E3/61 itself is the commercial-grade RoHS-compliant variant (E3 suffix) and is not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified versions under the HE3 (RoHS + AEC-Q101) and HM3 (halogen-free + RoHS + AEC-Q101) suffixes - for example, SMAJ16CAHE3_A/H. The SMAJ16CA-E3/61 shares identical electrical and thermal characteristics with those qualified variants, differing only in test documentation and traceability reporting.
How does SMAJ16CA-E3/61 differ from SMAJ16A-E3/61?
SMAJ16CA-E3/61 is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas SMAJ16A-E3/61 is unidirectional, featuring a cathode band and conducting only in reverse bias. The SMAJ16A-E3/61 also specifies forward voltage (VF = 3.5 V at 25 A), which is irrelevant for the CA version. Using SMAJ16A-E3/61 in place of SMAJ16CA-E3/61 risks unprotected reverse transients and requires strict layout polarity control.
What is the maximum operating temperature for SMAJ16CA-E3/61?
The SMAJ16CA-E3/61 has a specified operating junction temperature range of –55 °C to +150 °C, with storage temperature matching this span. Derating begins above 25 °C ambient per Figure 2 in the datasheet: at 85 °C ambient, its peak pulse power drops to approximately 280 W. The SMAJ16CA-E3/61 sustains full 400 W rating only up to ~45 °C ambient when mounted on the recommended 5.0 mm × 5.0 mm copper pads.
Can SMAJ16CA-E3/61 be used in place of SMAJ15CA-E3/61?
No - SMAJ16CA-E3/61 has a 16 V standoff voltage (VWM) and 17.8–19.7 V breakdown range, while SMAJ15CA-E3/61 is rated for 15 V VWM and 16.7–18.5 V VBR. Substituting SMAJ16CA-E3/61 for SMAJ15CA-E3/61 reduces protection margin in 12 V systems, potentially allowing damaging overvoltage to reach downstream ICs before clamping initiates. Always match VWM to system nominal voltage with ≥10 % margin.
SMAJ16CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- 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)
SMAJ16CA-E3/61 FAQ
1.How can I place an order for SMAJ16CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CA-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 SMAJ16CA-E3/61 reliable?
The price and inventory of SMAJ16CA-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 SMAJ16CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ16CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CA-E3/61?
SMAJ16CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CA-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 SMAJ16CA-E3/61?
For technical support, including SMAJ16CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CA-E3/61 requirements.
6.How does Aetrix verify that SMAJ16CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ16CA-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 SMAJ16CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ16CA-E3/61?
All SMAJ16CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CA-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 SMAJ16CA-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ16CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16CA-E3/61 Tags
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