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Vishay General Semiconductor - Diodes Division SA17HE3/54
- Part No.:
- SA17HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA17HE3/54.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,108
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Product details
Overview
SA17HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 54 V stand-off voltage (VWM), 60 V minimum breakdown voltage (VBR), and 500 W peak pulse power (10/1000 μs). It clamps transients to ≤93.6 V at 5.3 A peak pulse current (IPPM) and is AEC-Q101 qualified for automotive-grade reliability.
For engineers reviewing the SA17HE3/54 datasheet, SA17HE3/54 pinout, SA17HE3/54 application, or SA17HE3/54 equivalent, this part serves as a robust overvoltage protection device for DC power rails, sensor interfaces, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and high surge immunity are required.
Technical Context
The SA17HE3/54 operates as a uni-directional avalanche diode with glass-passivated junction, enabling stable breakdown behavior under repetitive transient stress. Its 500 W peak pulse rating applies to non-repetitive 10/1000 μs waveforms at ≤0.01% duty cycle, and it exhibits a maximum clamping voltage of 93.6 V at IPPM = 5.3 A - yielding a clamping ratio (VC/VBR) of ~1.56.
Thermal performance is defined by a 3.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C, and a maximum junction temperature of 175 °C. The device supports 70 A peak forward surge current (IFSM, 10 ms half-sine) and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail protection threshold |
| VBR (min) | 60 V at IT = 1.0 mA - guaranteed avalanche initiation voltage; ensures predictable turn-on during overvoltage events |
| VC @ IPPM | 93.6 V at 5.3 A - clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure |
| PPPM | 500 W - peak transient energy handling capacity; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) |
| IFSM | 70 A - single-cycle surge current rating; supports robustness against inductive switch-off spikes in motor drives |
| TJ max | 175 °C - maximum junction temperature; allows operation in under-hood automotive environments without derating |
| AEC-Q101 | Qualified - validated for automotive applications including engine control units and body electronics per stress test requirements |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case with UL 94 V-0 flammability rating; cathode indicated by color band on anode-side lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Enables clamping when transient exceeds VWM; must be routed with low-inductance path to ground plane |
| Cathode | Current exit point in forward bias; marked with color band; connected to protected line | Provides low-impedance shunt path during overvoltage; placement adjacent to IC input minimizes clamping loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity stress |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV open-circuit / 2 kV source impedance in industrial and automotive systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and chassis modules requiring extended temperature range and lifetime validation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for sensitive CMOS inputs |
| Matte tin plating, JESD 201 Class 2 whisker tested | Guarantees solder joint integrity in reflow and long-term storage; eliminates risk of conductive filament growth in high-reliability assemblies |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator switching transients. IC Role / Device Role: Primary clamping element placed between battery rail and upstream DC/DC converter input. Use Value: Clamps 120 V/200 ms load dump transients to <94 V, preventing damage to 60 V-rated input capacitors and controller ICs. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role: Low-capacitance TVS placed at connector interface before signal conditioning amplifier. Use Value: Limits transient voltage to <94 V while adding <0.5 pF parasitic capacitance - preserving bandwidth of 100 kHz sensor signals. |
| MOSFET Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates against Miller-induced voltage spikes during fast switching. IC Role / Device Role: Uni-directional clamp from gate to source, referenced to local driver ground. Use Value: Responds in <1 ns to suppress >60 V gate-source transients, preventing unintended turn-on and device failure. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role: Series-connected TVS on negative rail, with cathode tied to protected load. Use Value: Handles 500 W pulses without degradation across -40 °C to +125 °C ambient, meeting GR-1089-CORE Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/54 | Same VWM (54 V), identical DO-214AC package; lower PPPM (400 W), higher VC (93.6 V vs. 93.6 V - same), slightly higher VBR min (60.0 V vs. 60.0 V - identical) | Lower surge rating limits use in high-energy industrial surge environments; suitable for space-constrained PCBs where SMA footprint is preferred | Select SMAJ54A-E3/54 only if board layout mandates SMC/SMA package and 400 W rating suffices for IEC 61000-4-5 Level 3 compliance |
| 1.5KE54A | Higher PPPM (1500 W), larger DO-201AD package; same VWM (54 V), identical VBR (60–66.3 V), higher VC (91.1 V); not AEC-Q101 qualified | Delivers higher surge margin but lacks automotive qualification and occupies 3× PCB area; requires heavier copper for thermal management | Choose 1.5KE54A only for non-automotive applications needing >500 W headroom and where package size and qualification are secondary |
Compared with SMAJ54A-E3/54 and 1.5KE54A, SA17HE3/54 uniquely balances AEC-Q101 qualification, DO-15 footprint compatibility, and full 500 W IEC-compliant surge handling - making it optimal for automotive and space-limited industrial designs requiring certified reliability.
Availability
SA17HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power input protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SA17HE3/54 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, efficiency, and application-specific optimization.
The SAxx series was developed specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SA17HE3/54 at its rated peak pulse current?
The SA17HE3/54 has a maximum clamping voltage (VC) of 93.6 V at its specified peak pulse current (IPPM) of 5.3 A under a 10/1000 μs waveform. This value is measured per Figure 7 in the Vishay datasheet 88378 and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SA17HE3/54 maintains this clamping performance across its full operating temperature range.
Is SA17HE3/54 suitable for protecting bidirectional signal lines?
No, SA17HE3/54 is a uni-directional TVS diode and is not suitable for bidirectional signal lines. Its design includes a cathode marking and asymmetric conduction - it conducts only when the cathode is positive relative to the anode. For bidirectional protection, a part with "CA" suffix (e.g., SA54CA) must be used. The SA17HE3/54 is intended for DC power rail or unidirectional interface protection where polarity is fixed.
Does SA17HE3/54 meet automotive qualification standards?
Yes, SA17HE3/54 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet 88378 footnote (1) and ordering information table. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock - validating its use in automotive powertrain, body control, and ADAS modules. The "HE3" suffix denotes AEC-Q101 compliance and JESD 201 Class 2 whisker resistance.
What is the thermal derating behavior of SA17HE3/54 above 25 °C ambient?
The SA17HE3/54 follows a linear derating curve from 3.0 W at TL = 75 °C (per Figure 5), with zero power dissipation at TL ≈ 175 °C. Its junction-to-lead thermal resistance is not published, but steady-state power handling drops to ~1.5 W at TL = 125 °C. For reliable operation, PCB copper area and thermal vias must be designed to maintain lead temperature below 75 °C under continuous 3.0 W dissipation. The SA17HE3/54 is not intended for sustained power dissipation.
Can SA17HE3/54 be used in place of SA54A without layout changes?
Yes, SA17HE3/54 is a direct replacement for SA54A in terms of electrical specs, package (DO-204AC), pinout, and thermal profile - both share identical VWM (54 V), VBR (60–66.3 V), VC (93.6 V), and PPPM (500 W). The "HE3" suffix adds AEC-Q101 qualification and enhanced whisker resistance, but requires no PCB modifications. SA17HE3/54 retains full functional and mechanical compatibility with SA54A.
SA17HE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA17HE3/54 FAQ
1.How can I place an order for SA17HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA17HE3/54 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 SA17HE3/54 reliable?
The price and inventory of SA17HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA17HE3/54 is usually 5 days.
3.What payment methods are accepted for SA17HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA17HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA17HE3/54?
SA17HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA17HE3/54 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 SA17HE3/54?
For technical support, including SA17HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA17HE3/54 requirements.
6.How does Aetrix verify that SA17HE3/54 is sourced from the original manufacturer or authorized distributors?
All SA17HE3/54 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 SA17HE3/54 meets industry standards.
7.What is the process for return or replacement of SA17HE3/54?
All SA17HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA17HE3/54, 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 SA17HE3/54 part is unused and in its original packaging.
Return procedure for SA17HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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