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Vishay General Semiconductor - Diodes Division SA54CAHE3/54
- Part No.:
- SA54CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA54CAHE3/54.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,477
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Product details
Overview
SA54CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 54 V standoff voltage (VWM), 60–66.3 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 5.7 A peak pulse current (IPPM), and 87.1 V maximum clamping voltage (VC) - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SA54CAHE3/54 datasheet, SA54CAHE3/54 pinout, SA54CAHE3/54 application, or SA54CAHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-15 mechanical compatibility, low incremental surge resistance, and verified 175 °C junction temperature rating.
Technical Context
The SA54CAHE3/54 operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical clamping in both polarities. Its bidirectional architecture eliminates polarity concerns in AC-coupled or floating signal paths, and its 10/1000 μs waveform response ensures effective suppression of lightning-induced and inductive-switching transients.
It is rated for 3.0 W steady-state power dissipation at 75 °C lead temperature and supports repetitive surge events at ≤0.01 % duty cycle. The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 class 2 whisker resistance, confirming suitability for automotive and industrial reflow/solder-dip assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR (min/max) | 60.0 / 66.3 V at 1.0 mA - Confirmed breakdown threshold across production lot; ensures consistent turn-on under transient stress. |
| VC @ IPPM | 87.1 V at 5.7 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak transient energy handling capacity; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | DO-15 (DO-204AC) - Standard axial-leaded through-hole package; compatible with legacy PCB layouts and wave-solder processes. |
| Qualification | AEC-Q101 qualified - Validated for automotive electronic modules requiring reliability under thermal cycling, humidity, and vibration stress. |
Pinout & Package
DO-15 (DO-204AC) package: axial-leaded, molded epoxy body, matte tin-plated leads, no polarity marking (bidirectional). Lead length ≥25.4 mm, body diameter 3.3–3.5 mm, overall length ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional avalanche junction terminals | Electrically symmetric; either lead may connect to line or ground - no orientation dependency in circuit layout. |
| Leads (both) | Current-carrying terminals | Support 70 A non-repetitive forward surge (unidirectional test condition); sufficient for high-energy transient shunting. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal/humidity stress per AEC-Q101. |
| 500 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial control and telecom interfaces. |
| Low incremental clamping voltage (ΔVC = 27.1 V) | Minimizes overvoltage margin between VBR and VC, reducing stress on protected 54 V-rated components. |
| AEC-Q101 qualification | Confirms suitability for automotive powertrain, body electronics, and ADAS sensor protection without derating. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤87.1 V during 5.7 A surge, preventing latch-up or gate oxide damage in 5V–12V sensor front-ends. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC I/O rails to absorb 500 W surge energy without degradation. Use Value: Maintains system uptime by preventing controller reset or port latch-up during frequent 24 V coil switching events. |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Shielding Ethernet PHY magnetics or RS-485 transceiver pins from lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary-level transient suppressor on unshielded twisted-pair (UTP) side of isolation transformers. Use Value: Clamps common-mode surges within 1 ns response time, preserving signal integrity while meeting GR-1089-CORE Level 3 immunity. | Use Scenario: Secondary-side overvoltage protection on 48 V telecom or industrial DC-DC converter outputs. IC Role / Device Role / Timing Role: Standoff-clamp element across output rail to prevent downstream regulator or load damage during fault conditions. Use Value: Withstands 54 V nominal rail while clamping faults to 87.1 V - sufficient headroom for 100 V-rated capacitors and MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/5A | Unidirectional; SMA package (surface-mount); 54 V VWM; same VBR/VC specs but lower IPPM (5.4 A vs. 5.7 A). | Requires polarity-aware layout; suited for space-constrained PCBs where through-hole is impractical. | Select when automated SMT assembly is required and board real estate is limited; verify grounding path inductance does not degrade clamping performance. |
| 1.5KE54CA | Same DO-15 package and bidirectional function; higher PPPM (1500 W); larger VC (93.6 V); higher VBR spread (60–71.2 V). | Targets higher-energy threats (e.g., direct lightning coupling); less precise clamping due to wider VBR tolerance. | Choose for legacy designs needing higher surge margin; avoid where tight VC control is critical for 54 V-rated loads. |
Compared with SMAJ54A-E3/5A and 1.5KE54CA, the SA54CAHE3/54 offers AEC-Q101 qualification, tighter VBR tolerance (60–66.3 V), and optimized clamping (87.1 V) - making it preferred for automotive-grade signal-line protection where reliability and precision matter more than raw power rating.
Availability
SA54CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply across multi-year production cycles.
Supply support for SA54CAHE3/54 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SAxxCA series targets robust transient suppression in harsh environments; engineered for AEC-Q101 compliance and high-temperature operation in automotive, industrial, and telecom infrastructure.
FAQ
What is the polarity configuration of SA54CAHE3/54?
The SA54CAHE3/54 is a bidirectional TVS diode with no polarity marking on the DO-15 package. Its symmetrical avalanche structure allows connection in either orientation across protected lines - ideal for AC signals, differential buses, or floating grounds where polarity cannot be guaranteed. This differs from unidirectional variants like SA54A, which require cathode alignment.
Does SA54CAHE3/54 meet automotive qualification standards?
Yes, SA54CAHE3/54 is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number 88378, Revision 27-Sep-2021). The HE3 suffix explicitly denotes AEC-Q101 qualification, including testing for temperature cycling, humidity bias, mechanical shock, and solder heat resistance - validating its use in engine control units, body modules, and ADAS sensors.
What is the maximum clamping voltage of SA54CAHE3/54 under surge conditions?
The SA54CAHE3/54 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 Figure 9 in the datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream 54 V-rated components remain within safe operating limits.
Can SA54CAHE3/54 replace SA54A in existing designs?
No - SA54CAHE3/54 is bidirectional while SA54A is unidirectional. Substituting them requires verifying circuit topology: SA54CAHE3/54 may be used where polarity is undefined or AC-coupled, but SA54A must be retained if cathode-anode directionality is essential (e.g., DC power rail clamping with defined ground reference). Layout changes and functional validation are mandatory before replacement.
What packaging and reel format is supplied for SA54CAHE3/54?
SA54CAHE3/54 is supplied in 13-inch diameter paper tape and reel format, with a base quantity of 4000 pieces per reel (ordering code /54 confirms this packaging). The device uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, supporting both wave soldering and selective reflow processes without lead finish degradation.
SA54CAHE3/54 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:
- -
- Bidirectional Channels:
- 1
- 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)
SA54CAHE3/54 FAQ
1.How can I place an order for SA54CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA54CAHE3/54 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 SA54CAHE3/54 reliable?
The price and inventory of SA54CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA54CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA54CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA54CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA54CAHE3/54?
SA54CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA54CAHE3/54 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 SA54CAHE3/54?
For technical support, including SA54CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA54CAHE3/54 requirements.
6.How does Aetrix verify that SA54CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA54CAHE3/54 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 SA54CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA54CAHE3/54?
All SA54CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA54CAHE3/54, 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 SA54CAHE3/54 part is unused and in its original packaging.
Return procedure for SA54CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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