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Vishay General Semiconductor - Diodes Division SMA5J17AHE3/5A
- Part No.:
- SMA5J17AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J17AHE3/5A.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,497
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Product details
Overview
SMA5J17AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), 27.6 V clamping voltage at 18.1 A peak pulse current, 500 W peak pulse power rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J17AHE3/5A datasheet, SMA5J17AHE3/5A pinout, SMA5J17AHE3/5A application, or SMA5J17AHE3/5A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, junction temperature derating above 25 °C, unidirectional polarity marking, and RoHS-compliant AEC-Q101 qualification for automotive electronics design.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 17 V, then avalanches rapidly at VBR = 18.9–20.9 V to divert surge current away from downstream circuitry. Its low incremental surge resistance ensures stable clamping at VC = 27.6 V under 18.1 A (10/1000 µs).
Designed for surface-mount automated assembly, it uses a glass-passivated silicon junction and meets MSL Level 1 (260 °C reflow peak). Thermal resistance is RθJA = 80 °C/W and RθJL = 25 °C/W, with operating junction temperature range of –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for protected line. |
| VBR (min/max) | 18.9 V / 20.9 V - Breakdown voltage range at 1 mA test current; determines precise turn-on threshold under surge conditions. |
| VC @ IPPM | 27.6 V at 18.1 A - Clamping voltage during 10/1000 µs transient; limits maximum stress seen by downstream ICs or MOSFETs. |
| PPPM | 500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 40 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush or load-dump event tolerance. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade junction temperature range; validated per AEC-Q101 for under-hood applications. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; current flows anode-to-cathode during surge clamp. |
| Cathode (banded end) | Reverse-biased reference terminal | Connected to higher-potential rail (e.g., VCC); defines polarity and establishes VWM and VBR thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors requiring long-term reliability under thermal cycling and vibration. |
| Glass-passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and consistent VBR over lifetime and temperature. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving clamping predictability for sensitive 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-volume automated assembly at peak 260 °C. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and GND, clamping surges up to 500 W within nanoseconds. Use Value: Limits peak voltage to ≤27.6 V, preventing damage to MCU power supplies and CAN transceivers rated for 36 V absolute max. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line (e.g., 4–20 mA loop), grounded at system GND to absorb EFT bursts and inductive kickback. Use Value: Maintains signal integrity with <1.0 µA leakage at 17 V, while clamping 1 kV/50 Ω ESD events to <28 V at the ADC input. |
| Consumer Device DC Input Protection | Telecom Power Supply Clamp |
Use Scenario: Securing USB-C PD adapter 20 V output rails against reverse connection or hot-swap transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at DC jack input, cathode tied to VOUT, anode to GND. Use Value: Withstands 40 A single-half-sine surge (IFSM), enabling compliance with UL 62368-1 fault current requirements. | Use Scenario: Clamping secondary-side 48 V telecom power rails subject to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary surge suppression stage before DC-DC converter input, sized for 500 W 10/1000 µs waveform. Use Value: Delivers repeatable 27.6 V clamping across –40 °C to +125 °C ambient, supporting NEBS GR-1089 Class 3 immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J17A-E3/5A | Same electrical specs, but commercial-grade (non-AEC-Q101); no automotive qualification testing. | Approved for industrial/commercial designs only; not suitable for automotive OEM or Tier-1 production. | Select when cost sensitivity outweighs automotive qualification requirement and full temperature range validation is not needed. |
| SMA6J17AHE3/5A | 600 W PPPM, same VWM/VBR, larger SMA package variant with higher thermal mass. | Supports higher energy surges (e.g., ISO 16750-2 long-duration pulses); requires revised PCB pad layout. | Choose for enhanced surge margin in harsh environments where footprint increase is acceptable. |
Compared with SMA5J17A-E3/5A, the SMA5J17AHE3/5A adds AEC-Q101 qualification and extended reliability validation; compared with SMA6J17AHE3/5A, it trades 100 W peak power for smaller footprint and identical mounting compatibility.
Availability
SMA5J17AHE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMA5J17AHE3/5A 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 space-constrained automotive and industrial applications, delivering 500 W surge capability in the compact SMA (DO-214AC) footprint.
FAQ
What is the clamping voltage of the SMA5J17AHE3/5A under a standard 10/1000 µs surge?
The SMA5J17AHE3/5A clamps to a maximum 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 devices mounted on 0.2" × 0.2" copper pads per JEDEC standards. The SMA5J17AHE3/5A maintains this clamping performance across its full operating temperature range, making it suitable for automotive under-hood deployment.
Is the SMA5J17AHE3/5A suitable for bidirectional transient protection?
No, the SMA5J17AHE3/5A is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the "CA" suffix (e.g., SMA5J17CA). Using SMA5J17AHE3/5A in reverse-biased AC applications risks permanent failure due to forward conduction during negative half-cycles. Always verify polarity alignment in schematic and layout for the SMA5J17AHE3/5A.
Does the SMA5J17AHE3/5A meet automotive qualification standards?
Yes, the SMA5J17AHE3/5A is explicitly AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's 88875 datasheet revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock-validating suitability for automotive powertrain, body, and ADAS modules. The SMA5J17AHE3/5A is not just RoHS-compliant but fully automotive-grade.
What is the maximum leakage current of the SMA5J17AHE3/5A at its stand-off voltage?
The SMA5J17AHE3/5A exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its VWM of 17 V and tested at TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits and prevents false triggering in high-impedance sensor interfaces. The SMA5J17AHE3/5A maintains this specification across its full –55 °C to +150 °C junction temperature range per AEC-Q101 test conditions.
How does the thermal performance of the SMA5J17AHE3/5A affect PCB layout?
The SMA5J17AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W, meaning its junction temperature rises 80 °C per watt dissipated without heatsinking. To maintain reliability under repeated surges, PCB layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as specified in the datasheet. Reducing pad size or omitting thermal vias will degrade RθJA and risk exceeding the 150 °C TJMAX limit for the SMA5J17AHE3/5A.
SMA5J17AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J17AHE3/5A FAQ
1.How can I place an order for SMA5J17AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J17AHE3/5A 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 SMA5J17AHE3/5A reliable?
The price and inventory of SMA5J17AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J17AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J17AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J17AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J17AHE3/5A?
SMA5J17AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J17AHE3/5A 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 SMA5J17AHE3/5A?
For technical support, including SMA5J17AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J17AHE3/5A requirements.
6.How does Aetrix verify that SMA5J17AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J17AHE3/5A 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 SMA5J17AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J17AHE3/5A?
All SMA5J17AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J17AHE3/5A, 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 SMA5J17AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J17AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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