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Vishay General Semiconductor - Diodes Division SA54AHE3/54
- Part No.:
- SA54AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA54AHE3/54.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,841
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Product details
Overview
SA54AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), clamping voltage of 87.1 V at 5.7 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA54AHE3/54 datasheet, SA54AHE3/54 pinout, SA54AHE3/54 application, or SA54AHE3/54 equivalent, this device is selected for high-energy transient suppression in DC power rails, sensor interfaces, and automotive control modules where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +175 °C are critical.
Technical Context
The SA54AHE3/54 operates as a unidirectional avalanche diode with glass-passivated junction, delivering precise voltage clamping during ESD, lightning-induced surges, or inductive switching transients. Its 500 W peak pulse power rating is defined per 10/1000 µs waveform at 0.01% duty cycle, and it maintains stable performance across -55 °C to +175 °C operating junction temperature.
It exhibits 3.5 V maximum forward voltage at 100 A surge, 600 µA max reverse leakage at VWM, and a temperature coefficient of +65 mV/°C on VBR. The device is RoHS-compliant, matte tin-plated, and qualified to JESD201 Class 2 whisker test (HE3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Ensures reliable turn-on within tight tolerance for predictable protection threshold |
| VC @ IPPM | 87.1 V at 5.7 A - Low clamping voltage limits stress on downstream ICs during 10/1000 µs transients |
| PPPM | 500 W - Sustains high-energy surges without failure under standardized repetitive testing conditions |
| IFSM | 70 A - Withstands 10 ms half-sine surge current, critical for motor driver and relay coil suppression |
| TJ max | +175 °C - Enables deployment in under-hood automotive environments and high-power industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive electronic systems requiring zero-failure reliability over lifetime |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, molded epoxy case with UL 94 V-0 flammability rating. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 54 V rail); conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over temperature and lifetime, critical for long-term field reliability |
| 500 W peak pulse power (10/1000 µs) | Provides immunity against IEC 61000-4-5 Level 4 surges (4 kV) on 54 V systems without derating |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules without additional qualification effort |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system-level robustness |
| Matte tin plating, J-STD-002 compliant | Guarantees reliable solder wetting and intermetallic formation in automated reflow and wave soldering processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V/54 V battery-supplied ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp positive-going surges above 54 V. Use Value: Limits peak voltage to ≤87.1 V during 5.7 A transients, preventing damage to MCU, CAN transceivers, and voltage regulators. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or single-ended output to suppress ESD and cable discharge events. Use Value: Sub-1 ns response time and 600 µA leakage at 54 V preserve signal integrity and minimize offset drift in precision measurement circuits. |
| Telecom DC Power Input Protection | Motor Drive Control Signal Protection |
Use Scenario: Guarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input stage, upstream of DC-DC converters and hot-swap controllers. Use Value: 500 W rating and 175 °C max junction temperature support sustained operation in sealed outdoor enclosures with limited airflow. | Use Scenario: Shielding gate drive signals of MOSFETs/IGBTs from inductive kickback in BLDC motor inverters. IC Role / Device Role / Timing Role: TVS placed across gate-source terminals or between driver output and power switch to absorb Miller-induced spikes. Use Value: Clamping voltage of 87.1 V prevents unintended turn-on or oxide breakdown in 60–65 V-rated gate drivers. |
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), same DO-214AC package, but lower PPPM = 400 W and higher VC = 87.1 V at 4.6 A | Less suitable for high-repetition surges or systems requiring margin beyond IEC 61000-4-5 Level 3 | Select when board space constraints favor SMD and thermal mass is sufficient for 400 W dissipation |
| 1.5KE54A | Same VWM/VBR range, but larger DO-201AD package, higher PPPM = 1500 W, and slower response due to higher junction capacitance | Better for high-energy, low-frequency surges (e.g., AC mains coupling), less optimal for fast ESD | Choose when legacy through-hole layout exists and surge energy exceeds 500 W requirements |
Compared with SMAJ54A-E3/54 and 1.5KE54A, the SA54AHE3/54 delivers AEC-Q101 qualification and tighter VBR tolerance in a compact DO-15 axial package-making it optimal for new automotive and industrial designs prioritizing qualification, size, and repeatable clamping behavior.
Availability
SA54AHE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for SA54AHE3/54 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 qualification for harsh environments.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure where consistent clamping, AEC-Q101 compliance, and thermal resilience are mandatory.
FAQ
What is the clamping voltage of the SA54AHE3/54 and how is it measured?
The SA54AHE3/54 has a maximum clamping voltage (VC) of 87.1 V, measured at a peak pulse current (IPPM) of 5.7 A using a standardized 10/1000 µs double-exponential waveform. This value reflects the actual voltage seen by protected circuitry during a surge event and is guaranteed per the Vishay datasheet revision 27-Sep-2021. The SA54AHE3/54 achieves this clamping performance while maintaining low incremental surge resistance, ensuring minimal overshoot.
Is the SA54AHE3/54 suitable for automotive applications?
Yes, the SA54AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, matte tin-plated leads compliant with J-STD-002, and qualification to JESD201 Class 2 whisker testing (HE3 suffix). The SA54AHE3/54 supports operating junction temperatures up to +175 °C and meets ISO 7637-2 pulse requirements for load dump and inductive switching-making it appropriate for engine control units, body electronics, and ADAS power domains.
What does the "HE3" suffix indicate in SA54AHE3/54?
The "HE3" suffix in SA54AHE3/54 denotes two key attributes: "H" indicates AEC-Q101 qualification, and "E3" specifies RoHS-compliant, matte tin-plated leads meeting JESD201 Class 2 whisker resistance. This distinguishes it from commercial-grade "E3" variants (e.g., SA54A-E3/54) and confirms its suitability for automotive and high-reliability industrial deployments where process-controlled plating and qualification are mandatory. The SA54AHE3/54 is not interchangeable with non-HE3 versions in qualified designs.
How does the SA54AHE3/54 compare to bidirectional TVS diodes like SA54CA?
The SA54AHE3/54 is unidirectional and intended for DC rail protection where polarity is fixed; it provides forward conduction capability and lower leakage at VWM. In contrast, SA54CA is bidirectional and used in AC or floating signal paths. The SA54AHE3/54 has a cathode band marking and must be oriented correctly in-circuit, whereas SA54CA has no polarity marking. Their VBR and VC values differ slightly-SA54CA has higher max VBR (7.25 V for SA5.0CA, scaling accordingly) and symmetric clamping. For 54 V DC systems, SA54AHE3/54 is preferred.
What is the maximum reverse leakage current for SA54AHE3/54 at its rated stand-off voltage?
The SA54AHE3/54 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM = 54 V) and TA = 25 °C. This ultra-low leakage preserves power efficiency in always-on systems such as automotive telematics or IoT edge nodes. Leakage remains below 5 µA up to +125 °C per characterization curves in the Vishay datasheet, confirming stability across extended temperature ranges. The SA54AHE3/54 achieves this while maintaining 60.0–66.3 V breakdown tolerance and 500 W surge capability.
SA54AHE3/54 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 5.7A
- 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)
SA54AHE3/54 FAQ
1.How can I place an order for SA54AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA54AHE3/54 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 SA54AHE3/54 reliable?
The price and inventory of SA54AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA54AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA54AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA54AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA54AHE3/54?
SA54AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA54AHE3/54 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 SA54AHE3/54?
For technical support, including SA54AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA54AHE3/54 requirements.
6.How does Aetrix verify that SA54AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA54AHE3/54 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 SA54AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA54AHE3/54?
All SA54AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA54AHE3/54, 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 SA54AHE3/54 part is unused and in its original packaging.
Return procedure for SA54AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA54AHE3/54 Tags
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