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Vishay General Semiconductor - Diodes Division SA75CA-E3/54
- Part No.:
- SA75CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA75CA-E3/54.pdf
- Description:
- TVS DIODE 75VWM 121VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,226
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Product details
Overview
SA75CA-E3/54 from Vishay is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 75 V standoff voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 121 V maximum clamping voltage at 4.1 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA75CA-E3/54 datasheet, SA75CA-E3/54 pinout, SA75CA-E3/54 application, or SA75CA-E3/54 equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping, low leakage (<1.0 μA at 75 V), and high surge current capability are critical.
Technical Context
The SA75CA-E3/54 operates as a symmetric, bidirectional avalanche diode with no polarity marking - its terminals are interchangeable. It responds to transient overvoltages in both directions with matched VBR min/max (83.3 V / 92.1 V) and identical clamping behavior (VC = 121 V at IPPM = 4.1 A).
Its glass-passivated junction ensures stable breakdown characteristics across temperature (tempco = 91 mV/°C), while the DO-15 package supports soldering per J-STD-002 and JESD 22-B102, with matte tin leads passing JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuit. |
| VBR (min/max) | 83.3 V / 92.1 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | 121 V at 4.1 A (10/1000 μs) - Clamped voltage seen by downstream circuit during worst-case surge; limits stress on ICs/MOSFETs. |
| PPPM | 500 W - Peak transient energy absorption capacity; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage at rated standoff; avoids signal distortion or bias shift in high-impedance sensor lines. |
| TJ max | +175 °C - Extended junction temperature rating enables under-hood automotive deployment without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM/MM. |
Pinout & Package
DO-15 (DO-204AC) molded epoxy package with axial leads; no polarity marking for bidirectional operation - either lead may serve as anode or cathode depending on transient polarity. Leads are matte tin plated, solderable per J-STD-002, and compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current bidirectionally when voltage exceeds ±VBR. |
| Case | Non-electrical mechanical interface | Plastic body provides insulation and mechanical anchoring; no thermal or electrical connection to die. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature; eliminates surface degradation risks. |
| 500 W peak pulse power (10/1000 μs) | Withstands repetitive automotive load-dump and inductive switching events without parameter drift or failure. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, ADAS sensors, and body electronics. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD), improving protection margin for sensitive ICs. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and EU RoHS Directive 2011/65/EU for commercial-grade supply chain compliance. |
Applications
| Automotive Sensor Interface | 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 clamping element placed between signal line and ground, absorbing transients before they reach the transceiver input stage. Use Value: Maintains signal integrity under ISO 16750-2 load dump (12 V system, +120 V/60 ms) and IEC 61000-4-2 ESD (±15 kV air), preventing latch-up or damage to SA75CA-E3/54-protected ICs. | Use Scenario: Shielding digital input/output channels of programmable logic controllers from field-induced surges caused by relay coil switching or lightning-induced coupling. IC Role / Device Role / Timing Role: Primary surge suppression component mounted at connector entry point, shunting transient energy to chassis ground. Use Value: Enables reliable operation in harsh factory environments by limiting transient voltage to ≤121 V during 4.1 A 10/1000 μs surges, preserving PLC controller uptime and reducing maintenance cycles. |
| Telecom Power Rail Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding 48 V DC power inputs of telecom base station modules against induced surges from nearby AC mains or antenna coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across input rail and ground, activated only during overvoltage events exceeding 75 V. Use Value: Prevents catastrophic failure of DC-DC converters and FET drivers during IEC 61000-4-5 Level 3 (1 kV line-earth) surges, with <1.0 μA leakage avoiding standby power waste. | Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge outputs, conducting bidirectionally during commutation spikes. Use Value: Extends MOSFET lifespan by clamping inductive kickback to 121 V, eliminating need for larger heatsinks or higher-voltage FETs in cost-sensitive appliance designs using SA75CA-E3/54. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VWM/VBR/VC, but SMB (DO-214AA) surface-mount package; 600 W PPPM; lower thermal resistance. | Requires PCB rework for SMT layout; better suited for space-constrained, high-density boards vs. through-hole DO-15. | Select SMBJ75CA when board real estate is limited and automated assembly is preferred; SA75CA-E3/54 remains optimal for manual prototyping or high-reliability through-hole mounting. |
| 1.5KE75CA | Same VWM/VBR, but higher PPPM (1500 W); larger DO-201AD package; higher IPPM (23.3 A); slower response due to higher junction capacitance. | Better for high-energy lightning surges (IEC 61000-4-5 Level 4), but excessive clamping voltage margin may reduce protection precision for low-voltage ICs. | Choose 1.5KE75CA for infrastructure-grade surge immunity; SA75CA-E3/54 offers tighter VC and faster response for automotive and industrial signal-line protection. |
Compared with SMBJ75CA and 1.5KE75CA, the SA75CA-E3/54 delivers optimal balance of compact through-hole form factor, precise 121 V clamping, AEC-Q101 validation, and low-leakage performance - making it the preferred choice for automotive and industrial applications demanding reliability, ease of assembly, and accurate voltage limiting.
Availability
SA75CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom power rail protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified assurance.
Supply support for SA75CA-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 passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The SAxxCA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for bidirectional transient suppression in automotive, industrial, and telecom systems where robustness against load dump, ESD, and inductive switching is mandatory.
FAQ
What is the standoff voltage rating of the SA75CA-E3/54?
The SA75CA-E3/54 has a standoff voltage (VWM) of 75 V - the maximum DC or continuous reverse voltage it can block without entering avalanche conduction. This value ensures compatibility with 48 V and 60 V nominal systems while maintaining low leakage (<1.0 μA) under normal operating conditions. The SA75CA-E3/54 maintains this rating across its full operating temperature range of -55 °C to +175 °C.
Is the SA75CA-E3/54 suitable for automotive applications?
Yes, the SA75CA-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body-model ESD (HBM). Its DO-15 package, 175 °C max junction temperature, and stable VBR tempco (91 mV/°C) make it suitable for under-hood and chassis-mounted automotive electronics. The SA75CA-E3/54 is explicitly referenced in Vishay's automotive-grade TVS documentation for sensor and bus protection.
What is the maximum clamping voltage of the SA75CA-E3/54 during a surge event?
The SA75CA-E3/54 clamps to a maximum of 121 V when subjected to its rated peak pulse current of 4.1 A under the standard 10/1000 μs waveform. This clamping voltage is measured across the device terminals during transient conduction and represents the upper voltage limit imposed on the protected circuit. The SA75CA-E3/54 achieves this with low incremental surge resistance, ensuring minimal overshoot beyond VC.
Does the SA75CA-E3/54 have polarity markings?
No, the SA75CA-E3/54 is a bidirectional TVS diode and carries no polarity marking on its DO-15 package. Both leads are functionally identical, allowing installation in either orientation. This symmetry enables straightforward placement across differential lines or ungrounded circuits without concern for anode/cathode alignment - a key design simplification confirmed in the Vishay SAxxCA datasheet footnote stating "no marking on bidirectional types."
What is the peak pulse power rating of the SA75CA-E3/54?
The SA75CA-E3/54 is rated for 500 W peak pulse power dissipation with a 10/1000 μs waveform at 25 °C ambient, per Figure 1 in the Vishay datasheet. This rating applies to non-repetitive surges at a duty cycle of 0.01 % (4 pulses per minute maximum). The SA75CA-E3/54 sustains this performance with derating above 25 °C, maintaining ≥300 W capability up to +100 °C case temperature as shown in the pulse derating curve.
SA75CA-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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
SA75CA-E3/54 FAQ
1.How can I place an order for SA75CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA75CA-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 SA75CA-E3/54 reliable?
The price and inventory of SA75CA-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 SA75CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA75CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA75CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA75CA-E3/54?
SA75CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA75CA-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 SA75CA-E3/54?
For technical support, including SA75CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA75CA-E3/54 requirements.
6.How does Aetrix verify that SA75CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA75CA-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 SA75CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA75CA-E3/54?
All SA75CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA75CA-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 SA75CA-E3/54 part is unused and in its original packaging.
Return procedure for SA75CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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