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Vishay General Semiconductor - Diodes Division SA7.5CA-E3/54
- Part No.:
- SA7.5CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5CA-E3/54.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SA7.5CA-E3/54 from Vishay General Semiconductor is a bidirectional TransZORB® transient voltage suppressor diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 500 W peak pulse power (10/1000 μs), 38.8 A peak pulse current (IPPM), and 12.9 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the SA7.5CA-E3/54 datasheet, SA7.5CA-E3/54 pinout, SA7.5CA-E3/54 application, or SA7.5CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-15 mechanical compatibility, AEC-Q101 qualification status, thermal derating above 25 °C, and clamping performance under 10/1000 μs surge conditions.
Technical Context
This device operates as a bidirectional TVS diode with symmetrical avalanche breakdown in both polarities, enabling protection of AC-coupled or floating signal paths without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<50 μA at VWM), while the DO-15 package supports lead-free soldering per J-STD-002 and JESD 22-B102.
Designed for repetitive surge immunity, SA7.5CA-E3/54 delivers 500 W peak pulse power at 10/1000 μs waveform with 0.01 % duty cycle, and maintains clamping performance across -55 °C to +175 °C operating junction temperature range. Its incremental surge resistance is minimized to limit voltage overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - tight breakdown window ensures predictable turn-on and minimal overvoltage exposure |
| VC @ IPPM | 12.9 V - clamping voltage at 38.8 A peak pulse; limits downstream component stress during ESD or inductive switching events |
| PPPM | 500 W - peak surge power handling with 10/1000 μs waveform; suitable for IEC 61000-4-5 Level 3/4 surge immunity |
| ID @ VWM | <50 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +175 °C - high junction temperature rating enables use in under-hood automotive or high-ambient industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
SA7.5CA-E3/54 is housed in a DO-15 (DO-204AC) axial-leaded package with matte tin-plated leads, UL 94 V-0 molded epoxy body, and no polarity marking - consistent with bidirectional TVS construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked ends) | Bidirectional avalanche terminals | Either end functions identically; no cathode band - enables placement flexibility in AC or differential signal paths |
| Leads (both) | PCB mounting and thermal conduction path | Supports solder dip up to 275 °C for 10 s; lead length ≥0.375" required for rated PD = 3.0 W at TL = 75 °C |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift |
| 500 W peak pulse power (10/1000 μs) | Provides robust protection against lightning-induced surges and inductive load switching transients |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring long-term field reliability |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, ensuring solder joint integrity in high-reliability assemblies |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before it reaches interface ICs. Use Value: Limits transient voltage to ≤12.9 V during 38.8 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V sensor front-ends. | Use Scenario: Safeguarding digital input/output channels in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between channel and ground, absorbing repetitive 500 W transients without degradation. Use Value: Maintains <50 μA leakage at 7.5 V, avoiding false triggering of 24 V DC input sensing circuits during normal operation. |
| Consumer Power Adapter EMI Filtering | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for USB-C PD and smart home hubs subjected to conducted EFT. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across isolated DC output rails to prevent overvoltage propagation to downstream PMICs. Use Value: Achieves 12.9 V clamping at 38.8 A with <1 ns response time, meeting IEC 61000-4-4 Level 4 immunity requirements. | Use Scenario: Primary protection for Ethernet PHY interfaces and DSL line drivers against induced surges from nearby power lines or lightning. IC Role / Device Role / Timing Role: First-stage TVS on differential pairs (e.g., MDI/MDIX), leveraging symmetry to avoid common-mode imbalance. Use Value: Symmetrical VBR (8.33–9.21 V) ensures matched clamping on both conductors, preserving signal integrity during bidirectional transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57 | Unidirectional; SMA package; same VWM/VBR/VC specs but polarity-sensitive | Requires correct orientation on PCB; unsuitable for AC or floating differential lines | Select only when polarity is fixed and board space favors SMD over axial DO-15 |
| P6SMB7.5CA | Same bidirectional function; SMB package; slightly higher VC (13.4 V) and lower IPPM (37.2 A) | Lower surge margin; may require derating in high-energy surge environments | Acceptable where footprint constraints outweigh 500 W rating requirement |
Compared with SMAJ7.5A-E3/57 and P6SMB7.5CA, SA7.5CA-E3/54 offers verified bidirectional symmetry, DO-15 axial form factor for through-hole ruggedness, and full AEC-Q101 qualification - making it preferred for automotive and industrial systems demanding orientation-agnostic protection and high-reliability mounting.
Availability
SA7.5CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for SA7.5CA-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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SAxxCA series is part of Vishay's TransZORB® TVS platform, engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and communications infrastructure where clamping precision and surge endurance are critical.
FAQ
What is the clamping voltage of SA7.5CA-E3/54 at its rated peak pulse current?
The SA7.5CA-E3/54 has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current (IPPM) of 38.8 A under a 10/1000 μs waveform. This value is measured per Figure 9 in the Vishay datasheet 88378 and reflects worst-case voltage seen by protected circuitry during standardized surge events. The SA7.5CA-E3/54 maintains this clamping performance across its full operating temperature range.
Is SA7.5CA-E3/54 suitable for automotive applications?
Yes, SA7.5CA-E3/54 is AEC-Q101 qualified, confirming its compliance with automotive reliability standards including temperature cycling, high-temperature reverse bias, and ESD testing. Its DO-15 package, 175 °C max junction temperature, and bidirectional clamping make it appropriate for engine control units, body electronics, and ADAS sensor interfaces. The SA7.5CA-E3/54 meets requirements for ISO 7637-2 and IEC 61000-4-5 surge immunity in vehicle subsystems.
Does SA7.5CA-E3/54 have polarity markings?
No, SA7.5CA-E3/54 does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SA7.5A), the SA7.5CA-E3/54 features symmetrical avalanche characteristics in both directions and carries no cathode band. This allows flexible PCB placement on AC-coupled lines or differential pairs without orientation concerns - a key design advantage confirmed in the "Polarity" section of the Vishay datasheet 88378.
What is the maximum reverse leakage current for SA7.5CA-E3/54 at its stand-off voltage?
The SA7.5CA-E3/54 exhibits a maximum reverse leakage current (ID) of 50 μA at its rated stand-off voltage (VWM) of 7.5 V and TA = 25 °C. This low leakage preserves signal fidelity in high-impedance sensor circuits and avoids false triggering in 24 V industrial inputs. Leakage remains within specification across the full -55 °C to +175 °C operating range, as validated in Vishay's electrical characteristics table.
How does the DO-15 package of SA7.5CA-E3/54 affect its power dissipation capability?
The DO-15 (DO-204AC) package of SA7.5CA-E3/54 supports a steady-state power dissipation (PD) of 3.0 W when mounted with 0.375" (9.5 mm) lead length to an infinite heatsink at TL = 75 °C. Derating begins above 25 °C ambient per Figure 2 in the datasheet, reaching ~1.5 W at 100 °C. This axial-leaded form factor provides superior mechanical robustness and thermal mass versus SMD alternatives, making SA7.5CA-E3/54 well-suited for high-vibration environments where solder joint integrity is critical.
SA7.5CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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)
SA7.5CA-E3/54 FAQ
1.How can I place an order for SA7.5CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5CA-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 SA7.5CA-E3/54 reliable?
The price and inventory of SA7.5CA-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 SA7.5CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA7.5CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5CA-E3/54?
SA7.5CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5CA-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 SA7.5CA-E3/54?
For technical support, including SA7.5CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5CA-E3/54 requirements.
6.How does Aetrix verify that SA7.5CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.5CA-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 SA7.5CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA7.5CA-E3/54?
All SA7.5CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5CA-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 SA7.5CA-E3/54 part is unused and in its original packaging.
Return procedure for SA7.5CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.5CA-E3/54 Tags
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