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Vishay General Semiconductor - Diodes Division SMA5J17CA-E3/61
- Part No.:
- SMA5J17CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17CA-E3/61.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,426
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Product details
Overview
SMA5J17CA-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 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR), 500 W peak pulse power (10/1000 μs), clamping voltage of 27.6 V at 18.1 A, and operates from −55 °C to +150 °C - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J17CA-E3/61 datasheet, SMA5J17CA-E3/61 pinout, SMA5J17CA-E3/61 application, or SMA5J17CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating, DO-214AC thermal performance (RθJA = 80 °C/W), AEC-Q101 qualification path, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response to transients and low incremental surge resistance. Its symmetrical avalanche structure ensures identical clamping behavior in both polarities, with no polarity marking required on the SMA package.
Rated for 500 W peak pulse power under standardized 10/1000 μs waveform, it delivers 27.6 V clamping at 18.1 A while maintaining ≤1.0 μA reverse leakage at 17 V - enabling robust protection of 3.3 V, 5 V, and 12 V interfaces without affecting signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12–15 V systems. |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - verified breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 27.6 V at 18.1 A - clamping voltage limits downstream IC stress during 500 W surge; critical for MOSFET gate and MCU I/O protection. |
| PPPM | 500 W (10/1000 μs) - high power density enables single-device protection against lightning-induced surges and inductive switching spikes. |
| TJ range | −55 °C to +150 °C - supports under-hood automotive, industrial motor control, and outdoor telecom deployments. |
| RθJA | 80 °C/W - thermal resistance measured on 5.0 mm × 5.0 mm copper pads; informs PCB layout for sustained surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0, J-STD-002 solderability, and JESD 22-B102 whisker resistance (Class 2). Bidirectional construction means no cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; connects across protected line and ground (or between differential lines) without polarity constraint. |
| Case (body) | Thermal and mechanical interface | Plastic body transfers heat to PCB copper; requires minimum 5.0 mm × 5.0 mm pad per terminal for rated power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity concerns. |
| 500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV surge) without degradation when mounted per recommended pad layout. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1.0 μA) over temperature and lifetime; eliminates risk of moisture-induced parametric shift. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles; no pre-baking required prior to assembly. |
| AEC-Q101 qualification path | Base P/NHE3 suffix variants available - supports automotive-grade sourcing with traceable lot-level reliability data. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting wheel speed, pressure, and temperature sensors exposed to load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor supply/return lines to clamp transients before they reach ASIC front-end. Use Value: Maintains 17 V standoff while limiting clamped voltage to 27.6 V - preserving sensor accuracy and preventing latch-up in 5 V analog front-ends. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subjected to EFT bursts and ground potential differences. IC Role / Device Role / Timing Role: Connected between A/B differential lines and ground to absorb common-mode surges without distorting signal edges. Use Value: Sub-ns response and symmetrical clamping prevent data corruption during 10/1000 μs surges up to 500 W - sustaining >500 kbps communication integrity. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
Use Scenario: Secondary-side surge suppression on 12–19 V DC outputs of wall adapters used in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Placed between VOUT and GND to protect downstream PMICs and USB controllers from external surge coupling. Use Value: 27.6 V clamping ensures connected 3.3 V/5 V logic remains within absolute maximum ratings even during repeated 1 kV surges. |
Use Scenario: Primary protection stage on DSL line cards handling asymmetric surges from telephone line induction and lightning coupling. IC Role / Device Role / Timing Role: Mounted across tip/ring pair to shunt longitudinal surges before reaching transformer-coupled PHY interface. Use Value: 500 W rating and 80 °C/W thermal resistance allow reliable operation under Telcordia GR-1089 Class B surge conditions without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA | Lower PPPM (400 W vs. 500 W); same VWM/VBR range and SMA package. | Less suitable for IEC 61000-4-5 Level 4 or repetitive surge environments requiring higher energy margin. | Select SMAJ17CA only if system-level testing confirms 400 W suffices and cost sensitivity outweighs headroom needs. |
| SMBJ17CA | Same electrical specs but SMB (DO-214AA) package - 2.5 mm wider body, higher RθJA (~90 °C/W), and larger footprint. | Requires PCB redesign; preferred where board space allows and higher thermal mass improves long-pulse survivability. | Choose SMBJ17CA when thermal management under sustained surge duty dominates over board area constraints. |
Compared with SMAJ17CA and SMBJ17CA, the SMA5J17CA-E3/61 delivers superior power density (500 W in SMA), making it optimal for space-constrained automotive and industrial modules where both surge margin and layout efficiency are critical.
Availability
SMA5J17CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer power adapter outputs requiring stable component supply, RoHS-compliant commercial-grade TVS protection, and support for tape-and-reel SMT assembly.
Supply support for SMA5J17CA-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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-energy transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems needing AEC-Q101-ready, surface-mount TVS solutions with 500 W capability.
FAQ
What does the "CA" suffix mean in SMA5J17CA-E3/61?
The "CA" suffix in SMA5J17CA-E3/61 indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with identical VBR, VC, and IPPM characteristics regardless of polarity. This eliminates the need for polarity marking on the SMA package and simplifies layout for AC-coupled or floating-line protection.
Is SMA5J17CA-E3/61 RoHS-compliant and lead-free?
Yes, SMA5J17CA-E3/61 is RoHS-compliant and lead-free. The "E3" suffix denotes Vishay's commercial-grade, RoHS-compliant variant with matte tin-plated leads that meet J-STD-002 solderability requirements and JESD 22-B102 whisker resistance Class 2 standards.
What is the maximum clamping voltage of SMA5J17CA-E3/61 under surge conditions?
The maximum clamping voltage (VC) of SMA5J17CA-E3/61 is 27.6 V, measured at its peak pulse current (IPPM) of 18.1 A under the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream circuit voltage margining.
Can SMA5J17CA-E3/61 be used in automotive applications?
SMA5J17CA-E3/61 itself is commercial-grade, but Vishay offers AEC-Q101-qualified versions under the HE3 suffix (e.g., SMA5J17CAHE3_A). For automotive use, specify the HE3 or HM3 variant - SMA5J17CA-E3/61 is suitable for non-safety-critical automotive subsystems where qualification is not mandated.
What PCB pad layout is required to achieve the rated 500 W pulse power for SMA5J17CA-E3/61?
To achieve the full 500 W peak pulse power rating, SMA5J17CA-E3/61 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88875. Smaller pads will increase thermal resistance and reduce sustainable surge energy, potentially causing premature failure during repeated transients.
SMA5J17CA-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- 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)
SMA5J17CA-E3/61 FAQ
1.How can I place an order for SMA5J17CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17CA-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 SMA5J17CA-E3/61 reliable?
The price and inventory of SMA5J17CA-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 SMA5J17CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J17CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17CA-E3/61?
SMA5J17CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17CA-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 SMA5J17CA-E3/61?
For technical support, including SMA5J17CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17CA-E3/61 requirements.
6.How does Aetrix verify that SMA5J17CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J17CA-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 SMA5J17CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J17CA-E3/61?
All SMA5J17CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17CA-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 SMA5J17CA-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J17CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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