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Vishay General Semiconductor - Diodes Division SA7.0CA-E3/54
- Part No.:
- SA7.0CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.0CA-E3/54.pdf
- Description:
- TVS DIODE 7VWM 12VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:22,943
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Product details
Overview
SA7.0CA-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 7.0 V stand-off voltage (VWM), 8.60 V maximum breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 41.7 A peak pulse current (IPPM), and 12.0 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in industrial control systems.
For engineers reviewing the SA7.0CA-E3/54 datasheet, SA7.0CA-E3/54 pinout, SA7.0CA-E3/54 application, or SA7.0CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-15 mechanical compatibility, AEC-Q101 qualification status, thermal derating above 25 °C, and compliance with IEC 61000-4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 7.0 V), but switches to low-impedance conduction when reverse voltage exceeds VBR (7.78–8.60 V). Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the bidirectional structure eliminates polarity concerns in AC-coupled or floating lines.
Designed for repetitive surge events at ≤0.01% duty cycle, SA7.0CA-E3/54 sustains 500 W peak pulse power per 10/1000 μs waveform and derates linearly above TA = 25 °C, maintaining 3.0 W steady-state dissipation at TL = 75 °C on infinite heatsink. Junction temperature range is –55 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - defines reliable turn-on threshold across production lot |
| VC @ IPPM | 12.0 V at 41.7 A - clamping voltage during worst-case 10/1000 μs surge, limiting downstream stress |
| PPPM | 500 W - peak surge energy handling capacity per standardized waveform |
| ID @ VWM | 500 μA max - low leakage preserves signal integrity in high-impedance circuits |
| TJ Range | –55 °C to +175 °C - supports operation in automotive engine bays and industrial enclosures |
| Package | DO-15 (DO-204AC) - industry-standard axial leaded package with UL 94 V-0 molding |
Pinout & Package
SA7.0CA-E3/54 is a two-terminal bidirectional TVS diode in DO-15 package; no polarity marking is applied. The molded epoxy case measures 3.3–3.5 mm diameter × 25.4 mm minimum length, with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional clamping node | Either terminal serves as input/output - symmetric behavior enables placement across AC lines or ungrounded buses without orientation check |
| Leads (both) | PCB interconnect interface | Matte tin plating ensures robust solder joint formation; 275 °C/10 s solder dip rating supports wave and reflow processes |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and <500 μA leakage at VWM across temperature and life |
| 500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive powertrain and body electronics per stress test requirements |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed industrial or telecom equipment housings |
| Low incremental clamping resistance | Ensures VC stays within 12.0 V even at 41.7 A peak, minimizing overvoltage exposure to protected ICs |
Applications
| Industrial PLC I/O Protection | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 24 V DC analog input channels in programmable logic controllers against inductive kickback from solenoid switching. IC Role / Device Role / Timing Role: Shunt clamping element placed between signal line and ground, activated only during >8.6 V transients. Use Value: Limits voltage seen by ADC front-end to ≤12.0 V, preventing latch-up or damage to 12-bit precision converters. | Use Scenario: Safeguarding CAN bus differential pairs and LIN slave nodes in vehicle cabin modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across signal pair, suppressing ±100 V spikes within nanoseconds. Use Value: Maintains signal integrity during 10/1000 μs surges up to 41.7 A, enabling uninterrupted communication during ESD events. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Guarding RS-485 transceivers in base station backhaul links against lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary protection stage before secondary GDT or polymer TVS, absorbing bulk surge energy. Use Value: Clamps common-mode transients to <12.0 V before they reach the transceiver's ±7 V absolute maximum rating. | Use Scenario: Shielding microcontroller GPIOs and gate drivers in washing machine motor inverters from commutation noise. IC Role / Device Role / Timing Role: Localized clamp across MCU supply rail or half-bridge driver outputs. Use Value: Prevents false resets and shoot-through by holding VDD within safe margin during 500 W inductive spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/5A | Unidirectional; same VWM/VBR/VC specs but single-polarity; SMA package (surface-mount) | Requires polarity-aware layout; better suited for DC-biased rails where reverse conduction is undesirable | Select when space-constrained PCBs demand SMT and circuit topology guarantees unidirectional surge direction |
| P6SMB7.0CA | Bidirectional; same VWM/VBR/VC; higher 600 W PPPM rating; SMB package (SMT) | Higher surge margin allows longer lifetime in high-cycle industrial environments; requires rework of footprint | Choose when system-level surge testing exceeds 500 W and board area permits SMB pad layout |
Compared with SMAJ7.0A-E3/5A and P6SMB7.0CA, SA7.0CA-E3/54 offers through-hole mechanical robustness, AEC-Q101 qualification in HE3 variant, and proven reliability in vibration-prone industrial mounts - making it optimal for legacy designs and field-serviceable equipment.
Availability
SA7.0CA-E3/54 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive sensor signal lines, and telecom line interface applications requiring stable component supply and long-term obsolescence management.
Supply support for SA7.0CA-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, and protection devices with emphasis on reliability, AEC-Q qualification, and high-volume manufacturability.
The SAxxCA series targets board-level transient suppression in harsh environments, delivering consistent clamping performance across automotive, industrial, and telecom applications where failure modes must be mitigated without active control.
FAQ
What is the maximum clamping voltage of SA7.0CA-E3/54 under surge conditions?
The SA7.0CA-E3/54 exhibits a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 41.7 A using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures protected downstream components remain within safe voltage limits during transient events.
Is SA7.0CA-E3/54 suitable for automotive applications?
Yes - the SA7.0CA-E3/54 is part of Vishay's AEC-Q101-qualified TransZORB® family. While the E3 suffix denotes commercial-grade RoHS compliance, the HE3 variant (e.g., SA7.0CAHE3/54) is fully AEC-Q101 certified for use in automotive powertrain and body electronics, including sensor interfaces and infotainment power rails.
How does SA7.0CA-E3/54 differ from unidirectional SA7.0A-E3/54?
The SA7.0CA-E3/54 is bidirectional with symmetrical clamping in both polarities, whereas SA7.0A-E3/54 is unidirectional and conducts only in reverse bias. SA7.0CA-E3/54 has no cathode band marking and supports AC-coupled or floating-line protection, while SA7.0A-E3/54 requires correct polarity alignment and handles forward surge current (IFSM = 70 A).
What is the thermal derating behavior of SA7.0CA-E3/54 above 25 °C ambient?
SA7.0CA-E3/54 follows a linear derating curve: peak pulse power remains at 500 W up to TA = 25 °C, then decreases proportionally to zero at TJ = 175 °C. For steady-state power, PD drops from 3.0 W at TL = 75 °C to zero at TL = 150 °C, per Vishay's Fig. 2 and Fig. 5 curves in document 88378.
Can SA7.0CA-E3/54 be used in parallel for higher surge current handling?
No - SA7.0CA-E3/54 is not characterized for parallel operation. Variations in VBR (7.78–8.60 V) cause current imbalance, risking thermal runaway. For higher IPPM, select a single higher-rated device such as SA10CA-E3/54 (29.4 A) or P6SMB10CA (65 A), rather than paralleling SA7.0CA-E3/54 units.
SA7.0CA-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- 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)
SA7.0CA-E3/54 FAQ
1.How can I place an order for SA7.0CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.0CA-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 SA7.0CA-E3/54 reliable?
The price and inventory of SA7.0CA-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 SA7.0CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA7.0CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.0CA-E3/54?
SA7.0CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.0CA-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 SA7.0CA-E3/54?
For technical support, including SA7.0CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0CA-E3/54 requirements.
6.How does Aetrix verify that SA7.0CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.0CA-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 SA7.0CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA7.0CA-E3/54?
All SA7.0CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0CA-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 SA7.0CA-E3/54 part is unused and in its original packaging.
Return procedure for SA7.0CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.0CA-E3/54 Tags
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