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Vishay General Semiconductor - Diodes Division SA17AHE3/54
- Part No.:
- SA17AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA17AHE3/54.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,132
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Product details
Overview
SA17AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on power and signal lines. It features 500 W peak pulse power (10/1000 μs), 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR at 1.0 mA), 27.6 V maximum clamping voltage (VC) at 18.1 A, and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SA17AHE3/54 datasheet, SA17AHE3/54 pinout, SA17AHE3/54 application, or SA17AHE3/54 equivalent, this device is selected for robust overvoltage protection in DC power rails, sensor interfaces, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and high surge current tolerance (18.1 A IPPM) are critical.
Technical Context
The SA17AHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to ESD and lightning-induced transients. Its unidirectional polarity uses a cathode band marking, and it conducts only in reverse breakdown above VBR, maintaining <1.0 μA leakage at 17 V.
Thermal performance is defined by 175 °C max junction temperature, 3.0 W steady-state power dissipation at 75 °C lead temperature, and derating per Fig. 2. It withstands 70 A non-repetitive forward surge (10 ms half-sine) and exhibits +19 mV/°C VBR temperature coefficient - critical for stable clamping across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 12 V nominal bus) |
| VBR (min/max) | 18.9 V / 20.9 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature conduction |
| VC @ IPPM | 27.6 V at 18.1 A - Clamped voltage during 500 W transient; limits downstream stress to ≤27.6 V under worst-case surge |
| PPPM | 500 W (10/1000 μs) - Sustains industry-standard lightning/surge pulses without failure; validated per IEC 61000-4-5 |
| IPPM | 18.1 A - Peak surge current capability; determines minimum trace width and fuse coordination in PCB layout |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and industrial enclosures without thermal shutdown |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics, including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode identified by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Cathode terminal | Connected to protected line; reverse-biased during normal operation; conducts when VLINE exceeds VBR |
| Cathode (non-banded end) | Anode terminal | Typically tied to ground or lower-potential rail; completes clamping path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 immunity requirements for industrial and automotive power inputs |
| Low incremental clamping resistance | Ensures minimal voltage overshoot beyond VC during fast-rising transients (e.g., ESD >15 kV) |
| AEC-Q101 qualification | Validates suitability for automotive body control modules, infotainment power supplies, and ADAS sensor interfaces |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - required for automotive production |
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 TVS placed between power input and ground, clamping surges within nanoseconds. Use Value: Limits voltage to ≤27.6 V during 18.1 A transients, preventing damage to LDOs, microcontrollers, and CAN transceivers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to ground, preserving signal integrity up to 1 MHz. Use Value: Sub-1 ns response and <1.0 μA leakage at 17 V ensure no DC loading or noise injection into precision sensor circuits. |
| MOSFET Gate Driver Protection | DC Motor Control Board Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by PWM controllers in BLDC inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes during switching. Use Value: 27.6 V clamping prevents gate oxide breakdown while allowing full 12–15 V gate drive swing during normal operation. | Use Scenario: Suppressing inductive kickback from brushed DC motor commutation in power tools and HVAC actuators. IC Role / Device Role / Timing Role: Unidirectional TVS across motor terminals or supply rail to absorb stored inductive energy. Use Value: 500 W rating handles repetitive 10/1000 μs surges from motor switching, extending board lifetime in high-duty-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/54 | Same VWM (17 V), identical DO-214AC package; 400 W PPPM vs. 500 W; slightly higher VC (27.7 V) | Limited to lower-energy transients; not AEC-Q101 qualified | Select SMAJ17A-E3/54 only if space-constrained SMD layout is mandatory and surge levels are ≤400 W |
| 1.5KE18A | Higher PPPM (1500 W), DO-201 package; larger footprint; VWM = 15.3 V, VC = 27.7 V | Better for high-energy lightning surges but incompatible with compact DO-15 footprints | Choose 1.5KE18A when system-level surge testing requires >500 W margin and board area permits larger axial package |
Compared with SMAJ17A-E3/54 and 1.5KE18A, the SA17AHE3/54 uniquely balances 500 W surge handling, AEC-Q101 compliance, and DO-15 form factor - making it optimal for automotive and industrial designs requiring proven reliability in legacy through-hole layouts.
Availability
SA17AHE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and MOSFET gate driver protection requiring stable component supply and long-term lifecycle support.
Supply support for SA17AHE3/54 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 and automotive-grade qualification.
The SAxxA series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SA17AHE3/54 at its rated peak pulse current?
The SA17AHE3/54 has a maximum clamping voltage (VC) of 27.6 V at its peak pulse current (IPPM) of 18.1 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 500 W transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SA17AHE3/54 maintains this clamping performance across its specified temperature range.
Is SA17AHE3/54 suitable for automotive applications?
Yes, SA17AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, JESD 201 Class 2 whisker-resistant plating, and guaranteed operation from –55 °C to +175 °C. These attributes make SA17AHE3/54 appropriate for engine control units, body electronics, and ADAS power domains where reliability under thermal and mechanical stress is essential.
What does the "HE3" suffix indicate in SA17AHE3/54?
The "HE3" suffix in SA17AHE3/54 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions (e.g., SA17AE3/54), confirming that SA17AHE3/54 meets automotive reliability standards for solderability, intermetallic growth, and long-term stability in vibration-prone environments.
How does SA17AHE3/54 differ from bidirectional TVS diodes like SA17CA?
SA17AHE3/54 is unidirectional and features a cathode band for polarity identification, conducting only during reverse overvoltage events. In contrast, SA17CA is bidirectional with no polarity marking and clamps transients of either polarity - suited for AC lines or differential data buses. SA17AHE3/54 offers lower leakage (<1.0 μA at 17 V) and is preferred for DC power rails where asymmetric protection suffices and leakage must be minimized.
What is the maximum steady-state power dissipation for SA17AHE3/54?
The SA17AHE3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C. This rating decreases linearly above 75 °C per the derating curve in Figure 5 of the datasheet. Unlike transient power, PD applies to continuous DC or low-frequency reverse bias conditions and must be considered in thermal design for sustained overvoltage scenarios.
SA17AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- 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:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA17AHE3/54 FAQ
1.How can I place an order for SA17AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA17AHE3/54 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 SA17AHE3/54 reliable?
The price and inventory of SA17AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA17AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA17AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA17AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA17AHE3/54?
SA17AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA17AHE3/54 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 SA17AHE3/54?
For technical support, including SA17AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA17AHE3/54 requirements.
6.How does Aetrix verify that SA17AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA17AHE3/54 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 SA17AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA17AHE3/54?
All SA17AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA17AHE3/54, 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 SA17AHE3/54 part is unused and in its original packaging.
Return procedure for SA17AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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