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Vishay General Semiconductor - Diodes Division SMA5J20CA-E3/61
- Part No.:
- SMA5J20CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J20CA-E3/61.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J20CA-E3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR), 32.4 V clamping voltage (VC) at 15.4 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the SMA5J20CA-E3/61 datasheet, SMA5J20CA-E3/61 pinout, SMA5J20CA-E3/61 application, or SMA5J20CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification eligibility (via HE3 suffix), low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low Rsurge enables effective energy diversion during ESD and lightning-induced transients.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and meets J-STD-020 MSL Level 1 (260 °C peak reflow). Thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable power dissipation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum reverse stand-off voltage before significant leakage; defines safe operating window for protected circuitry |
| VBR (min/max) | 22.2 V / 24.5 V at 1 mA - guaranteed breakdown threshold range ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | 32.4 V at 15.4 A - clamped voltage during 500 W 10/1000 µs surge; determines worst-case stress on downstream components |
| PPPM | 500 W - peak pulse power handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity |
| IPPM | 15.4 A - peak pulse current supported at rated clamping voltage; correlates directly with PCB trace and layout robustness |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount package with 2.54 mm lead pitch; compatible with standard 7" tape-and-reel (E3/61) |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output for transient energy; no cathode band marking required |
| Case (body) | Thermal and mechanical interface | Non-conductive epoxy body; thermal path routed via leads to PCB copper pads (0.2" × 0.2" min) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 500 W peak pulse power | Supports compliance with IEC 61000-4-5 (10/1000 µs) up to 1 kV open-circuit test level |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during surge, reducing risk of latch-up or gate oxide damage in protected ICs |
| MSL Level 1 (260 °C) | Permits single-reflow assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring validated reliability per stress test standards |
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 inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing surge energy before it reaches sensitive front-end amplifiers or microcontrollers. Use Value: Maintains signal integrity during 12 V/24 V system surges up to ±300 V (IEC 7637-2 Pulse 5a), with clamping below 33 V to prevent damage to 3.3 V/5 V logic interfaces. |
Use Scenario: Shielding digital and analog I/O channels on programmable logic controller (PLC) modules exposed to field wiring transients in factory automation. IC Role / Device Role / Timing Role: Primary surge suppression element on isolated input/output terminals, working in coordination with series impedance and filtering capacitors. Use Value: Withstands repeated 500 W surges without degradation, enabling >100,000 surge cycles per IEC 61000-4-5, extending field service life and reducing maintenance downtime. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Safeguarding Ethernet PHY interfaces, RS-485 transceivers, and DSL line drivers against lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: First-line transient suppressor located at connector entry point, shunting surge current away from isolation barriers and data converters. Use Value: 32.4 V clamping voltage ensures protected PHY ICs (e.g., MAX3078, SN65HVD72) remain within absolute maximum ratings during 10/1000 µs 4 kV tests. |
Use Scenario: Adding secondary-level surge protection on DC output rails of wall adapters and USB PD chargers to meet UL 62368-1 transient immunity requirements. IC Role / Device Role / Timing Role: Low-capacitance TVS placed after primary DC-DC regulation stage to suppress fast-rising ESD and ringwave events on 5–20 V outputs. Use Value: 1.0 µA max leakage at 20 V prevents standby current increase; fast response avoids propagation of sub-100 ns ESD pulses into connected devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20CA | Lower PPPM (400 W vs. 500 W); same VWM/VC; identical SMA package and bidirectional function | Not suitable for IEC 61000-4-5 Level 4 (4 kV) testing where higher energy margin is required | Select SMAJ20CA only for cost-sensitive consumer designs with lower surge exposure profiles |
| SMBJ20CA | Same electrical specs but SMB (DO-214AA) package - 3.56 mm width vs. SMA's 2.92 mm; 10% larger footprint | Requires PCB layout revision; better thermal performance (RθJA = 65 °C/W) for high-duty-cycle applications | Choose SMBJ20CA when thermal derating or long-term reliability under frequent surges outweighs space constraints |
Compared with SMAJ20CA and SMBJ20CA, the SMA5J20CA-E3/61 delivers superior energy handling in the smallest standardized SMA outline, making it optimal for space-constrained automotive and industrial modules where 500 W surge margin and AEC-Q101 upgrade path are critical.
Availability
SMA5J20CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line conditioning requiring stable component supply, full RoHS compliance, and traceable sourcing.
Supply support for SMA5J20CA-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in harsh environments, targeting design-in for AEC-Q101-compliant automotive systems and industrial equipment demanding robust 500 W surge immunity.
FAQ
What is the clamping voltage of the SMA5J20CA-E3/61 under a 10/1000 µs surge?
The SMA5J20CA-E3/61 clamps to 32.4 V at its peak pulse current of 15.4 A under a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the maximum voltage seen by downstream circuitry during a full-rated surge event. The SMA5J20CA-E3/61 maintains this clamping performance bidirectionally.
Is the SMA5J20CA-E3/61 suitable for automotive applications?
The SMA5J20CA-E3/61 is RoHS-compliant and manufactured to commercial-grade specifications. While the base E3/61 variant is not AEC-Q101 qualified, Vishay offers the SMA5J20CAHE3_A/H variant (HE3 suffix) which is fully AEC-Q101 qualified. For automotive use, specify the HE3 or HM3 version - the SMA5J20CA-E3/61 itself is intended for industrial and consumer applications unless upgraded.
Does the SMA5J20CA-E3/61 have polarity markings on the package?
No, the SMA5J20CA-E3/61 does not have polarity markings. As a bidirectional TVS diode, it has symmetrical electrical behavior in both directions, and Vishay omits the cathode band marking on CA-suffix devices. The SMA5J20CA-E3/61 functions identically regardless of orientation during PCB placement.
What is the maximum operating temperature for the SMA5J20CA-E3/61?
The SMA5J20CA-E3/61 has a maximum junction temperature (TJ) of +150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This allows deployment in under-hood automotive locations, industrial motor drives, and outdoor telecom enclosures where ambient temperatures exceed 100 °C.
How does the SMA5J20CA-E3/61 differ from the SMAJ20CA in practical design?
The SMA5J20CA-E3/61 provides 500 W peak pulse power versus 400 W for the SMAJ20CA, offering 25% higher surge energy handling with identical VWM, VBR, and VC. In practice, this enables the SMA5J20CA-E3/61 to pass stricter IEC 61000-4-5 Level 4 testing where the SMAJ20CA may fail. Both share the same SMA package and bidirectional functionality.
SMA5J20CA-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J20CA-E3/61 FAQ
1.How can I place an order for SMA5J20CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J20CA-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 SMA5J20CA-E3/61 reliable?
The price and inventory of SMA5J20CA-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 SMA5J20CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J20CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J20CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J20CA-E3/61?
SMA5J20CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J20CA-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 SMA5J20CA-E3/61?
For technical support, including SMA5J20CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J20CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J20CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J20CA-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 SMA5J20CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J20CA-E3/61?
All SMA5J20CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J20CA-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 SMA5J20CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J20CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J20CA-E3/61 Tags
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