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Vishay General Semiconductor - Diodes Division SMA6J17A-E3/5A
- Part No.:
- SMA6J17A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J17A-E3/5A.pdf
- Description:
- TVS DIODE 17VWM 31.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,605
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Product details
Overview
SMA6J17A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR at IT = 1 mA), 31.4 V maximum clamping voltage (VC) at 111 A peak pulse current (IPP, 8/20 μs), and 600 W peak pulse power (10/1000 μs). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment against inductive switching surges.
For engineers reviewing the SMA6J17A-E3/5A datasheet, SMA6J17A-E3/5A pinout, SMA6J17A-E3/5A application, or SMA6J17A-E3/5A equivalent, key selection criteria include unidirectional polarity, 31.4 V clamping at 111 A (8/20 μs), 120 °C/W junction-to-ambient thermal resistance, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered above its reverse breakdown threshold. Its dynamic resistance (RD = 0.094 Ω) and low clamping ratio (VC/VBR ≈ 1.66) ensure rapid energy diversion during transient events such as EFT or lightning-induced surges. The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity.
It delivers 4000 W peak pulse power under 8/20 μs waveform conditions and sustains 50 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine). Thermal performance is defined with 5.0 mm × 5.0 mm copper pads per terminal, yielding RθJA = 120 °C/W - critical for board-level thermal design in compact power supplies and interface modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 15 V nominal rails. |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - tight breakdown tolerance ensures predictable turn-on across temperature and production lots. |
| VC @ IPP | 31.4 V at 111 A (8/20 μs) - clamping voltage seen by protected circuit during worst-case surge; determines residual stress on downstream components. |
| PPPM (10/1000 μs) | 600 W - energy-handling capability for slower transients like inductive kickback; requires ≥5 mm² copper pad per terminal for rating compliance. |
| ID @ VWM | 0.2 μA max - ultra-low leakage preserves signal integrity and battery life in always-on sensor interfaces. |
| TJ max | +150 °C - enables operation in high-ambient environments such as enclosed industrial drives or outdoor telecom enclosures. |
| RθJA | 120 °C/W - thermal resistance from junction to ambient under specified PCB layout; informs derating above TA = 25 °C. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode indicated by color band. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; establishes reference for clamping action when cathode is biased above it. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12–24 V supply rail or RS-485 bus); conducts surge current to anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 31.4 V VC at 111 A (8/20 μs) enables protection of 24 V systems with >5 V safety margin below typical 36 V absolute max ratings. |
| Thermal robustness | RθJA = 120 °C/W with standard pad layout supports sustained operation up to +105 °C ambient in sealed enclosures without forced cooling. |
| Automated assembly support | Low-profile SMA package and J-STD-020 MSL Level 1 rating allow reflow soldering at 260 °C peak without preconditioning or dry-pack requirements. |
| Leakage control | 0.2 μA max reverse leakage at 17 V ensures minimal standby current draw in battery-powered IoT sensor nodes. |
| Material compliance | E3 suffix denotes RoHS-compliant, industrial-grade construction with UL 94 V-0 molding compound and whisker-resistant terminations. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and DC-link sensing circuits against IGBT turn-off spikes in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient overvoltages on 15–24 V auxiliary rails feeding isolated gate drivers. Use Value: Limits voltage excursion to ≤31.4 V during 111 A surge, preventing latch-up or oxide rupture in SiC gate drivers rated for 35 V max. |
Use Scenario: Input-stage surge suppression on -48 V telecom rectifier outputs exposed to lightning-induced surges on central office distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC bus, placed upstream of DC/DC converters and monitoring ICs. Use Value: Absorbs 4000 W (8/20 μs) without failure, maintaining <0.2 μA leakage to avoid false fault detection in precision current-sense amplifiers. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load-dump and jump-start transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Line-end TVS on LIN physical layer, placed between connector and transceiver to clamp fast-rising edges. Use Value: Clamps 111 A (8/20 μs) within 1 ns response time, limiting voltage to 31.4 V - well below 36 V ABS MAX of automotive-grade transceivers. |
Use Scenario: Protection of analog front-ends in 4–20 mA current-loop sensors deployed in factory-floor PLC cabinets subject to relay coil switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable? No - unidirectional SMA6J17A-E3/5A used on supply side only; paired with series resistor for loop current path. Use Value: 17 V VWM aligns with 24 V loop supply; 0.2 μA leakage avoids introducing >10 nA error into 4–20 mA calibration baseline. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J17CA-E3/5A | Bidirectional variant with symmetric ±17 V VWM and same clamping (VC = 31.4 V at 111 A), but higher leakage (1 μA). | Required where AC-coupled lines or bidirectional data buses (e.g., CAN, RS-485) need symmetrical surge protection. | Select SMA6J17CA-E3/5A only if bidirectional clamping is mandatory; SMA6J17A-E3/5A is preferred for DC rails due to lower leakage. |
| SMCJ17A-E3/57T | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; higher PPPM (1500 W, 10/1000 μs) and lower RθJA (60 °C/W). | Suitable for higher-power industrial systems requiring greater thermal margin or longer surge duration handling. | Choose SMCJ17A-E3/57T when board space allows and thermal derating headroom is insufficient with SMA footprint. |
Compared with SMA6J17CA-E3/5A and SMCJ17A-E3/57T, the SMA6J17A-E3/5A offers optimal balance of low leakage (0.2 μA), compact SMA footprint, and sufficient 600 W surge rating for cost-sensitive 24 V industrial controls - making it ideal where PCB area and standby power are constrained.
Availability
SMA6J17A-E3/5A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and industrial sensor signal conditioning requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMA6J17A-E3/5A 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMA6J17A-E3/5A belongs to Vishay's TRANSZORB® family of transient suppressors, engineered specifically for robust, low-leakage clamping in space-constrained industrial and telecom power interfaces.
FAQ
What is the maximum clamping voltage of the SMA6J17A-E3/5A under an 8/20 μs surge?
The SMA6J17A-E3/5A has a maximum clamping voltage (VC) of 31.4 V when subjected to a peak pulse current (IPP) of 111 A using the 8/20 μs waveform. This value is measured at TA = 25 °C with the device mounted on 5.0 mm × 5.0 mm copper pads per terminal, and represents the upper voltage limit imposed on protected circuitry during such transients.
Is the SMA6J17A-E3/5A suitable for protecting 24 V DC power rails?
Yes, the SMA6J17A-E3/5A is specifically suited for 24 V DC rail protection: its 17 V stand-off voltage (VWM) provides adequate margin below nominal 24 V, while its 31.4 V clamping voltage remains safely below the 36 V absolute maximum rating typical of many 24 V-rated ICs and MOSFETs. Its 0.2 μA leakage also minimizes impact on system efficiency.
Does the SMA6J17A-E3/5A have a bidirectional configuration option?
No, the SMA6J17A-E3/5A is unidirectional only. For bidirectional protection, Vishay offers the SMA6J17CA-E3/5A, which features symmetric ±17 V stand-off voltage and identical clamping performance but higher leakage (1 μA). The "A" suffix in SMA6J17A-E3/5A explicitly denotes unidirectional polarity.
What is the thermal resistance and how does it affect layout for the SMA6J17A-E3/5A?
The SMA6J17A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Exceeding this pad size yields no significant improvement; reducing pad area increases thermal impedance and requires derating power dissipation above TA = 25 °C per Figure 2 in the datasheet.
What does the "E3/5A" suffix mean in SMA6J17A-E3/5A?
The "E3" suffix indicates RoHS-compliant, industrial-grade construction with matte tin terminations and JESD 201 Class 2 whisker resistance. The "5A" denotes packaging in 13-inch diameter plastic tape and reel containing 7500 units - distinct from "61" (7-inch reel, 1800 units) and optimized for high-volume SMT production lines.
SMA6J17A-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 31.4V
- Current - Peak Pulse (10/1000µs):
- 111A (8/20µs)
- Power - Peak Pulse:
- 4000W (4kW)
- 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)
SMA6J17A-E3/5A FAQ
1.How can I place an order for SMA6J17A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J17A-E3/5A 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 SMA6J17A-E3/5A reliable?
The price and inventory of SMA6J17A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J17A-E3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J17A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J17A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J17A-E3/5A?
SMA6J17A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J17A-E3/5A 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 SMA6J17A-E3/5A?
For technical support, including SMA6J17A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J17A-E3/5A requirements.
6.How does Aetrix verify that SMA6J17A-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J17A-E3/5A 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 SMA6J17A-E3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J17A-E3/5A?
All SMA6J17A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J17A-E3/5A, 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 SMA6J17A-E3/5A part is unused and in its original packaging.
Return procedure for SMA6J17A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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