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Vishay General Semiconductor - Diodes Division SA54A-E3/54
- Part No.:
- SA54A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA54A-E3/54.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,654
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Product details
Overview
SA54A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for overvoltage protection of sensitive electronics. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 µs), 87.1 V clamping voltage at 5.7 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA54A-E3/54 datasheet, SA54A-E3/54 pinout, SA54A-E3/54 application, or SA54A-E3/54 equivalent, this device is selected for robust ESD and surge protection on DC power rails, signal lines, and MOSFET gate drivers where fast response (<1 ns), low clamping ratio, and stable junction temperature up to +175 °C are critical.
Technical Context
The SA54A-E3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its unidirectional polarity uses a cathode band marking and exhibits 3.5 V maximum forward voltage at 100 A, supporting high-current surge handling without latch-up.
It delivers 500 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle, with thermal derating above 25 °C and steady-state power dissipation of 3.0 W on infinite heatsink at TL = 75 °C. The device's 65 mV/°C temperature coefficient of VBR ensures predictable voltage drift across its -55 to +175 °C operating range.
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 1.0 mA - Ensures reliable avalanche initiation within tight tolerance band |
| VC @ IPPM | 87.1 V at 5.7 A - Clamping voltage limits downstream component stress during 10/1000 µs surge |
| PPPM | 500 W - Sustains high-energy transients common in automotive load-dump and inductive switching events |
| IFSM | 70 A - Withstands 10 ms half-sine surge without failure, critical for motor driver protection |
| TJ max. | +175 °C - Enables placement near hot components (e.g., power MOSFETs, DC-DC converters) |
| Package | DO-15 (DO-204AC) - Industry-standard axial leaded package with UL 94 V-0 molded epoxy |
Pinout & Package
DO-15 (DO-204AC) package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane during transient clamping |
| Cathode | Protected line connection / Clamping node | Connected to the line being protected (e.g., 48 V rail, sensor supply); color-banded end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche performance and long-term reliability under repetitive surge stress |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| 500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surge immunity requirements |
| Low incremental surge resistance | Minimizes VC overshoot and improves clamping precision during fast-rising transients |
| Solder dip rated 275 °C / 10 s | Compatible with standard wave and reflow soldering processes without degradation |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs against load dump and jump-start transients in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within nanoseconds. Use Value: Limits voltage to ≤87.1 V during 5.7 A surge, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field-induced spikes in factory automation. IC Role / Device Role / Timing Role: TVS connected in parallel with sensor output, referenced to system ground. Use Value: Sub-ns response and 60–66.3 V VBR ensure accurate signal integrity while surviving ±8 kV contact ESD per IEC 61000-4-2. |
| MOSFET Gate Driver Protection | Telecom DC Power Entry Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates driven by isolated gate drivers in industrial inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes. Use Value: 3.5 V max forward voltage at 100 A enables safe clamping of negative-going gate transients without forward conduction loss. | Use Scenario: Front-end protection of -48 V telecom rectifier outputs against lightning-induced surges on central office equipment. IC Role / Device Role / Timing Role: Primary unidirectional clamping device on DC input bus before bulk capacitance. Use Value: 500 W rating and 70 A IFSM support compliance with Telcordia GR-1089-CORE Level 3 surge testing. |
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-E3/57 | Same VWM/VBR/VC, but SMA package (surface-mount, 5.8 × 3.5 mm); lower IPPM (5.5 A vs. 5.7 A) | Requires PCB redesign; better suited for space-constrained, automated assembly | Select when board area is limited and reflow compatibility is prioritized over axial through-hole serviceability |
| 1.5KE54A | Higher PPPM (1500 W), larger DO-201 package; same VWM/VBR range but higher VC (93.6 V) | Used in legacy industrial power supplies where higher surge margin is required | Choose only if >500 W surge capacity is mandatory and DO-15 footprint cannot be modified |
Compared with SMAJ54A-E3/57 and 1.5KE54A, the SA54A-E3/54 offers optimal balance of automotive qualification, axial-leaded serviceability, and precise 54 V standoff-making it preferred for new designs targeting AEC-Q101 compliance and manual or selective soldering processes.
Availability
SA54A-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power entry circuits requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 assurance.
Supply support for SA54A-E3/54 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade validation.
The SAxxA series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where consistent clamping, low leakage, and thermal resilience are non-negotiable.
FAQ
What is the maximum clamping voltage of the SA54A-E3/54 under specified surge conditions?
The SA54A-E3/54 has a maximum clamping voltage (VC) of 87.1 V at 5.7 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during a defined transient event. The SA54A-E3/54 maintains this clamping performance across its full operating temperature range.
Is the SA54A-E3/54 suitable for automotive applications?
Yes, the SA54A-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-glass-passivated junction, DO-15 package with matte tin leads, and operation from -55 to +175 °C-meets stringent automotive reliability requirements. The SA54A-E3/54 is commonly deployed in engine control modules, body control units, and ADAS power domains where load-dump and jump-start immunity are essential.
How does the SA54A-E3/54 differ from bidirectional variants like SA54CA?
The SA54A-E3/54 is unidirectional, with a cathode band marking and forward conduction capability (VF ≤ 3.5 V at 100 A), whereas SA54CA is bidirectional and lacks polarity marking. The SA54A-E3/54 is used on DC lines referenced to ground; SA54CA suits AC or floating signal lines. Their VBR and VC values differ slightly-SA54CA has symmetric breakdown and higher VC due to dual-junction architecture.
What is the meaning of the "E3/54" suffix in SA54A-E3/54?
The "E3" suffix indicates RoHS-compliant, commercial-grade packaging with JESD 201 Class 1A whisker resistance; "/54" denotes the preferred package code for DO-15 in 13-inch paper tape and reel, with 4000 units per reel. This ordering code ensures traceable, standardized logistics and assembly compatibility-distinct from HE3 (AEC-Q101 qualified) or other reel sizes.
Can the SA54A-E3/54 be used in parallel for higher surge current handling?
No-parallel connection of SA54A-E3/54 devices is not recommended due to parameter mismatch (VBR tolerance, dynamic impedance), which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device (e.g., 1.5KE54A) or verify matched binning and derating per Vishay application note AN8002. The SA54A-E3/54 is characterized and validated as a standalone protection element.
SA54A-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA54A-E3/54 FAQ
1.How can I place an order for SA54A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA54A-E3/54 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 SA54A-E3/54 reliable?
The price and inventory of SA54A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA54A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA54A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA54A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA54A-E3/54?
SA54A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA54A-E3/54 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 SA54A-E3/54?
For technical support, including SA54A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA54A-E3/54 requirements.
6.How does Aetrix verify that SA54A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA54A-E3/54 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 SA54A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA54A-E3/54?
All SA54A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA54A-E3/54, 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 SA54A-E3/54 part is unused and in its original packaging.
Return procedure for SA54A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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