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Vishay General Semiconductor - Diodes Division SMA5J17CHE3/5A
- Part No.:
- SMA5J17CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17CHE3/5A.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,246
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Product details
Overview
SMA5J17CHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR), 27.6 V clamping voltage (VC) at 18.1 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J17CHE3/5A datasheet, SMA5J17CHE3/5A pinout, SMA5J17CHE3/5A application, or SMA5J17CHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 µA leakage at 17 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
The device is rated for 500 W peak pulse power per 10/1000 µs waveform, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation in compact layouts when mounted per recommended pad dimensions (0.2" × 0.2").
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 18.9 V / 20.9 V - guaranteed avalanche breakdown range at 1 mA test current |
| VC @ IPPM | 27.6 V - clamped voltage during 500 W surge, limiting downstream stress |
| IPPM | 18.1 A - peak pulse current supported by 10/1000 µs waveform |
| PPPM | 500 W - transient energy absorption capacity without failure |
| TJ max | 150 °C - maximum junction temperature for sustained reliability in automotive environments |
| Leakage @ VWM | <1.0 µA - minimal standby power loss and signal integrity impact |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94 V-0, matte tin-plated leads solderable per J-STD-002/JESD 22-B102, cathode indicated by band marking. MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (during surge conduction) | Connected to protected line side; conducts when transient exceeds VBR |
| Cathode (banded end) | Reverse-biased reference terminal | Connected to ground or lower-potential rail; defines unidirectional clamping polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures repeatable, stable avalanche performance across temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving system-level robustness |
| MSL Level 1 rating | Enables standard Pb-free reflow without pre-baking or moisture sensitivity concerns |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and EU RoHS Directive 2011/65/EU |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground. Use Value: Clamps transients to ≤27.6 V within nanoseconds, preventing damage to 3.3 V/5 V microcontrollers and CAN transceivers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential or single-ended signal lines to ground. Use Value: Sub-1 µA leakage preserves signal accuracy; 27.6 V clamping prevents op-amp input stage latch-up. |
| DC-DC Converter Input Protection | MOSFET Gate Driver Surge Suppression |
Use Scenario: Shielding buck converter inputs from inductive switching spikes in motor drives. IC Role / Device Role / Timing Role: Primary-side TVS installed upstream of input filter capacitor. Use Value: 500 W rating absorbs repetitive 100–500 mJ surges without degradation; DO-214AC footprint fits tight board space. | Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs due to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp dv/dt-induced overvoltage. Use Value: Fast <1 ns response limits gate-source voltage excursion to safe levels below 20 V, preserving driver IC integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J17A-E3/5A | Commercial-grade version (non-AEC-Q101); identical electrical specs and DO-214AC package | Lacks automotive qualification; suitable for consumer/industrial use only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMC5J17AHE3/5A | Same VWM/VC specs but in larger DO-214AB (SMC) package with higher IFSM (100 A vs. 40 A) | Better surge endurance for high-repetition or high-energy events; requires larger PCB area | Choose when system-level surge testing exceeds 500 W single-event limits or demands higher IFSM margin |
Compared with SMA5J17A-E3/5A, the SMA5J17CHE3/5A adds AEC-Q101 validation for automotive deployment; versus SMC5J17AHE3/5A, it trades package size and surge current headroom for tighter layout integration in space-constrained modules.
Availability
SMA5J17CHE3/5A is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and DC-DC converter input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMA5J17CHE3/5A 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 SMA5J series is engineered for high-power-density transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, AEC-Q101 compliance, and consistent clamping behavior are critical.
FAQ
What is the clamping voltage of the SMA5J17CHE3/5A under a 10/1000 µs surge?
The SMA5J17CHE3/5A has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 18.1 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C with the device mounted on 0.2" × 0.2" copper pads per the datasheet test condition, ensuring predictable overvoltage limiting for downstream components.
Is the SMA5J17CHE3/5A suitable for automotive applications?
Yes, the SMA5J17CHE3/5A is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, matte tin-plated leads compliant with JESD 201 Class 2 whisker testing, and operation up to 150 °C junction temperature - all validated per automotive reliability standards for engine control units, body electronics, and ADAS subsystems.
What does the "HE3" suffix indicate in SMA5J17CHE3/5A?
The "HE3" suffix in SMA5J17CHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from the commercial "E3" version (e.g., SMA5J17A-E3/5A), confirming enhanced process controls and extended reliability testing for mission-critical applications.
How does the SMA5J17CHE3/5A differ from bi-directional TVS diodes like SMA5J17CA?
The SMA5J17CHE3/5A is unidirectional and functions as a polarity-sensitive clamp - conducting only during positive transients relative to its cathode. In contrast, SMA5J17CA is bi-directional and clamps both polarities, making it suitable for AC lines or differential signals. The unidirectional SMA5J17CHE3/5A offers lower leakage and better DC blocking capability for single-rail protection.
What is the thermal resistance of the SMA5J17CHE3/5A, and how does it affect PCB layout?
The SMA5J17CHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W. To maintain safe junction temperatures under repeated surges, the PCB must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - underscoring the need for adequate copper pour and thermal vias in high-duty-cycle applications.
SMA5J17CHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J17CHE3/5A FAQ
1.How can I place an order for SMA5J17CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17CHE3/5A 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 SMA5J17CHE3/5A reliable?
The price and inventory of SMA5J17CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J17CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17CHE3/5A?
SMA5J17CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17CHE3/5A 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 SMA5J17CHE3/5A?
For technical support, including SMA5J17CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17CHE3/5A requirements.
6.How does Aetrix verify that SMA5J17CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J17CHE3/5A 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 SMA5J17CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J17CHE3/5A?
All SMA5J17CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17CHE3/5A, 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 SMA5J17CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J17CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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