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Vishay General Semiconductor - Diodes Division SA7.5CAHE3/54
- Part No.:
- SA7.5CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5CAHE3/54.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,118
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Product details
Overview
SA7.5CAHE3/54 from Vishay General Semiconductor is a bidirectional TransZORB® transient voltage suppressor (TVS) diode in DO-15 package, rated for 7.5 V stand-off voltage, 500 W peak pulse power (10/1000 μs), 38.8 A peak pulse current, and 12.9 V maximum clamping voltage at IPPM. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against inductive switching transients.
For engineers reviewing the SA7.5CAHE3/54 datasheet, SA7.5CAHE3/54 pinout, SA7.5CAHE3/54 application, or SA7.5CAHE3/54 equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, DO-15 mechanical compatibility, and verified 12.9 V clamping at 38.8 A under standardized 10/1000 μs surge conditions.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical breakdown in both polarities, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR (8.33–9.21 V) and low incremental surge resistance, critical for fast response to ESD and load-dump events.
Designed for repetitive surge duty cycles up to 0.01 %, it maintains thermal stability across -55 °C to +175 °C junction temperature range and delivers consistent clamping performance under 10/1000 μs waveform stress, per IEC 61000-4-5 Level 4 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 8.33 V / 9.21 V - Verified breakdown threshold at 1.0 mA test current, ensuring reliable turn-on margin |
| VC @ IPPM | 12.9 V - Clamping voltage at 38.8 A peak pulse current, defining worst-case protected circuit overvoltage |
| PPPM | 500 W - Peak surge power handling capability under standardized 10/1000 μs waveform |
| ID @ VWM | 50 μA - Reverse leakage at rated stand-off voltage, minimizing standby power loss |
| TJ max | +175 °C - Maximum junction temperature rating, supporting under-hood automotive deployment |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per stress-test requirements |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, molded epoxy case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. No polarity marking - bidirectional operation confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Transient conduction path | Identical electrical behavior in both directions; no cathode band - symmetric clamping |
| Lead 1 | Connection node | Electrically interchangeable with Lead 2; no functional distinction in bidirectional mode |
| Lead 2 | Connection node | Matches Lead 1 in voltage standoff, breakdown, and clamping characteristics |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit / 0.5 A short-circuit test levels |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics per stress-test protocols |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage exposure during transient events, protecting downstream 12 V logic interfaces |
| 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 bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector entry point to clamp transients before reaching sensitive ICs. Use Value: Limits induced overvoltage to ≤12.9 V during 38.8 A surges, preserving integrity of 5 V/12 V interface logic and ADC front-ends. | Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers against field-wiring inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted on PCB edge connectors to absorb ±1 kV/0.5 A transients per IEC 61000-4-5. Use Value: Enables robust 24 V DC I/O operation with <50 μA leakage at rated voltage, minimizing false triggering in high-noise factory environments. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Suppressing fast-rising transients on AC/DC adapter secondary-side outputs caused by nearby relay switching or ESD discharge. IC Role / Device Role / Timing Role: Secondary-side TVS placed between VOUT and GND to clamp output rail excursions during fault conditions. Use Value: Maintains regulated 5 V/9 V/12 V output integrity with sub-13 V clamping, preventing latch-up or damage to connected USB peripherals. | Use Scenario: Protecting Ethernet PHY interfaces and RS-485 transceivers in network equipment from ESD (IEC 61000-4-2) and surge (IEC 61000-4-5). IC Role / Device Role / Timing Role: Bidirectional shunt suppressor installed on differential data lines to equalize transient energy across both conductors. Use Value: Provides symmetrical clamping with matched VBR (±0.44 V spread), preserving signal integrity on full-duplex communication links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | Same VWM (7.5 V) and bidirectional configuration, but SMA package (smaller footprint, lower thermal mass) | Preferred for space-constrained PCBs; derated IPPM (37.3 A) due to smaller package thermal capacity | Select when board area is limited and peak surge duty is infrequent |
| P6SMB7.5CA | Same DO-214AA (SMB) package, higher PPPM (600 W), identical VWM and clamping (12.9 V) | Better suited for higher-energy surge environments (e.g., 10/1000 μs 500 W vs. 600 W); requires larger pad layout | Choose for enhanced surge margin where PCB real estate permits SMB footprint |
Compared with SA7.5CAHE3/54, SMAJ7.5CA offers compactness at the cost of thermal endurance, while P6SMB7.5CA provides higher surge headroom in a larger surface-mount package - both require layout adaptation and do not share pinout or mounting compatibility.
Availability
SA7.5CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface designs requiring stable component supply with AEC-Q101 assurance and DO-15 through-hole compatibility.
Supply support for SA7.5CAHE3/54 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 TVS devices with emphasis on reliability, power handling, and automotive qualification.
The SAxxCA series is engineered specifically for bidirectional transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where symmetrical clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of the SA7.5CAHE3/54?
The SA7.5CAHE3/54 has a minimum breakdown voltage (VBR) of 8.33 V and a maximum of 9.21 V, measured at 1.0 mA test current per the Vishay datasheet. This tight VBR window ensures predictable turn-on behavior during transient events and supports accurate system-level overvoltage margining for 12 V circuits. The SA7.5CAHE3/54 maintains this specification across its qualified operating temperature range.
Is the SA7.5CAHE3/54 suitable for automotive applications?
Yes, the SA7.5CAHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its -55 °C to +175 °C junction temperature range, glass-passivated junction, and DO-15 package with matte tin leads meet automotive reliability and solderability requirements. The SA7.5CAHE3/54 is commonly deployed in engine control units, body control modules, and sensor interfaces where bidirectional transient suppression is required.
What does the "HE3" suffix indicate in SA7.5CAHE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 class 2 whisker resistance. Specifically, HE3 confirms that the SA7.5CAHE3/54 meets automotive reliability standards, including extended thermal cycling and mechanical shock testing, and uses matte tin plating validated for high-reliability solder joints. This distinguishes it from commercial-grade E3 variants.
How does the clamping voltage of SA7.5CAHE3/54 compare to its stand-off voltage?
The SA7.5CAHE3/54 has a 7.5 V stand-off voltage (VWM) and clamps at 12.9 V when subjected to its rated 38.8 A peak pulse current (IPPM). This results in a clamping ratio (VC/VWM) of 1.72, indicating moderate overvoltage margin - appropriate for protecting 12 V systems where downstream ICs tolerate up to 14–16 V transient exposure. The SA7.5CAHE3/54 achieves this with low incremental surge resistance, minimizing voltage overshoot.
Can SA7.5CAHE3/54 replace unidirectional TVS diodes like SA7.5AHE3/54?
No - the SA7.5CAHE3/54 is strictly bidirectional and lacks polarity marking, whereas SA7.5AHE3/54 is unidirectional with a cathode band. Substituting them requires circuit redesign: SA7.5CAHE3/54 conducts in both directions and must be placed across differential or floating nodes, while SA7.5AHE3/54 is intended for single-polarity rail-to-ground protection. Using SA7.5CAHE3/54 in place of SA7.5AHE3/54 may cause unintended conduction in DC-biased paths.
SA7.5CAHE3/54 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:
- -
- 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)
SA7.5CAHE3/54 FAQ
1.How can I place an order for SA7.5CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5CAHE3/54 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 SA7.5CAHE3/54 reliable?
The price and inventory of SA7.5CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.5CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA7.5CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5CAHE3/54?
SA7.5CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5CAHE3/54 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 SA7.5CAHE3/54?
For technical support, including SA7.5CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5CAHE3/54 requirements.
6.How does Aetrix verify that SA7.5CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.5CAHE3/54 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 SA7.5CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA7.5CAHE3/54?
All SA7.5CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5CAHE3/54, 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 SA7.5CAHE3/54 part is unused and in its original packaging.
Return procedure for SA7.5CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.5CAHE3/54 Tags
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