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Vishay General Semiconductor - Diodes Division SMAJ10CA-E3/61
- Part No.:
- SMAJ10CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10CA-E3/61.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,090
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Product details
Overview
SMAJ10CA-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 10 V standoff voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 1 mA, clamps transients to ≤17.0 V at 23.5 A peak pulse current (IPPM), and delivers 400 W peak pulse power (10/1000 μs waveform) - deployed in automotive sensor interfaces and industrial I/O protection circuits.
For engineers reviewing the SMAJ10CA-E3/61 datasheet, SMAJ10CA-E3/61 pinout, SMAJ10CA-E3/61 application, or SMAJ10CA-E3/61 equivalent, key selection criteria include bidirectional clamping behavior, SMA (DO-214AC) package compatibility, AEC-Q101 qualification eligibility, and verified 17.0 V max clamping voltage under 23.5 A surge conditions.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction enables fast response (<1 ps) to ESD and lightning-induced transients, while low incremental surge resistance ensures stable clamping performance under repetitive 0.01% duty cycle surges.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working range for protected line. |
| VBR min/max | 11.1 V / 12.3 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | ≤17.0 V at 23.5 A - Measured clamping voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; validates protection capability against IEC 61000-4-5 Level 4 surges. |
| IPPM | 23.5 A - Peak surge current supported at VC; directly correlates with energy absorption (E = VC × ∫i dt). |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 2.54 mm lead pitch; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive polarity) | One terminal of symmetrical junction; conducts during positive-going transients relative to cathode reference. |
| Cathode | Transient current entry (negative polarity) | Second terminal of symmetrical junction; conducts during negative-going transients - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in AC-coupled or floating signal lines. |
| 400 W peak pulse power | Validated at 10/1000 μs waveform - provides margin against IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit. |
| Low clamping ratio (VC/VBR) | 1.53 max (17.0 V / 11.1 V) - minimizes overvoltage overshoot during transient events, protecting 3.3 V and 5 V logic interfaces. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak without baking - reduces manufacturing complexity and avoids moisture-related popcorning. |
| AEC-Q101 qualification path | Available as SMAJ10CAHE3 variant - supports automotive applications requiring validated reliability for engine control, body electronics, and ADAS sensors. |
Applications
| Automotive Sensor Interface | Industrial Digital 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: Bidirectional shunt clamp placed between signal line and ground, absorbing surge energy before it reaches the transceiver IC. Use Value: Limits transient voltage to ≤17.0 V, preventing latch-up or gate oxide damage in 5 V tolerant automotive interface ICs. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils and motor drives. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines, clamping spikes within 1 ns to preserve signal integrity during switching events. Use Value: Withstands 400 W surges at 10/1000 μs, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements. |
| Consumer USB Port Protection | Telecom Line Interface |
|
Use Scenario: Shielding USB 2.0 D+/D− lines in portable devices from ESD events (IEC 61000-4-2 ±15 kV air, ±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector, diverting ESD current away from PHY IC. Use Value: Clamps ESD-induced transients to <17.0 V within sub-nanosecond response, preventing data corruption or PHY latch-up. |
Use Scenario: Protecting Ethernet PHY or DSL line drivers from lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to common-mode ground, suppressing common- and differential-mode transients. Use Value: Symmetrical 10 V standoff and 17.0 V clamping ensure balanced protection without skewing differential signaling integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A-E3/61 | Unidirectional; cathode band marked; same VWM, VBR, VC, and PPPM. | Requires polarity-aware PCB layout; suitable only for DC-biased or ground-referenced lines. | Select when protecting single-polarity supply rails or unidirectional data lines where reverse conduction must be blocked. |
| SMBJ10CA-E3/52 | Same functionality but in SMB (DO-214AA) package; 400 W rating; 1.6 mm wider body and 5.3 mm length vs. SMA's 4.6 mm length. | Higher thermal mass improves surge endurance but requires larger PCB footprint and different pad layout. | Choose when higher surge repetition tolerance or legacy SMB footprint compatibility is required; verify board space and thermal relief. |
Compared with SMAJ10CA-E3/61, the unidirectional SMAJ10A-E3/61 offers identical electrical protection with polarity constraint, while the SMBJ10CA-E3/52 trades compact SMA size for enhanced thermal capacity in a larger package - critical for high-duty-cycle industrial surge environments.
Availability
SMAJ10CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer USB port protection, and telecom line driver circuits requiring stable component supply and RoHS-compliant sourcing.
Supply support for SMAJ10CA-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 and application-specific performance.
The SMAJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMAJ10CA-E3/61 under maximum surge conditions?
The SMAJ10CA-E3/61 clamps to a maximum of 17.0 V when subjected to its rated peak pulse current of 23.5 A (10/1000 μs waveform). This value is measured and guaranteed per the Vishay datasheet revision 09-Jan-2024, ensuring downstream ICs see no more than 17.0 V during transient events - critical for safeguarding 3.3 V and 5 V logic interfaces. The SMAJ10CA-E3/61 achieves this with low dynamic impedance and symmetrical bidirectional behavior.
Is the SMAJ10CA-E3/61 suitable for automotive applications?
Yes - the base SMAJ10CA-E3/61 is commercial-grade and RoHS-compliant, and Vishay offers the AEC-Q101 qualified variant SMAJ10CAHE3 for automotive use. While SMAJ10CA-E3/61 itself is not certified, its construction (glass-passivated junction, MSL Level 1, TJ max = +150 °C) aligns with automotive environmental requirements. For production automotive designs, specify SMAJ10CAHE3; the SMAJ10CA-E3/61 remains appropriate for prototyping and non-safety-critical systems where qualification is pending. The SMAJ10CA-E3/61 shares identical electrical specs with its qualified counterpart.
How does the bidirectional design of the SMAJ10CA-E3/61 affect PCB layout?
The SMAJ10CA-E3/61 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Unlike unidirectional variants (e.g., SMAJ10A-E3/61), it requires no cathode alignment check, reducing assembly errors and enabling use on AC-coupled, floating, or differential signal lines such as USB D+/D− or RS-485 pairs. Its SMA (DO-214AC) footprint remains unchanged, and the SMAJ10CA-E3/61 integrates seamlessly into existing layouts designed for bidirectional protection without netlist or silkscreen modifications.
What is the thermal resistance of the SMAJ10CA-E3/61, and how does it impact power dissipation?
The SMAJ10CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This means a 3.3 W steady-state power dissipation (PD) raises the junction temperature by ~396 °C above ambient - but since TVS devices handle energy in short pulses, not continuous DC, RθJA primarily affects recovery time between surges. For repetitive transients, the SMAJ10CA-E3/61's 30 °C/W junction-to-lead resistance (RθJL) dominates heat transfer to the PCB. The SMAJ10CA-E3/61 relies on pulse derating curves (Fig. 2) rather than steady-state limits.
Can the SMAJ10CA-E3/61 replace the SMAJ10A-E3/61 in an existing design?
No direct replacement without layout review - the SMAJ10CA-E3/61 is bidirectional and unmarked, while the SMAJ10A-E3/61 is unidirectional with a cathode band. Swapping them may cause unintended conduction in DC-biased circuits if reverse voltage exceeds VWM. However, in AC, floating, or differential applications (e.g., USB, RS-485), the SMAJ10CA-E3/61 is functionally superior and requires no changes beyond removing polarity checks. Always verify circuit topology: the SMAJ10CA-E3/61 is safe only where bidirectional clamping is acceptable and reverse leakage at VWM is tolerable.
SMAJ10CA-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):
- 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-E3/61 FAQ
1.How can I place an order for SMAJ10CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10CA-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 SMAJ10CA-E3/61 reliable?
The price and inventory of SMAJ10CA-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 SMAJ10CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ10CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10CA-E3/61?
SMAJ10CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10CA-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 SMAJ10CA-E3/61?
For technical support, including SMAJ10CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10CA-E3/61 requirements.
6.How does Aetrix verify that SMAJ10CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ10CA-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 SMAJ10CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ10CA-E3/61?
All SMAJ10CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10CA-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 SMAJ10CA-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ10CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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