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Vishay General Semiconductor - Diodes Division SMA5J7.5CAHE3/5A
- Part No.:
- SMA5J7.5CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5CAHE3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,961
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Product details
Overview
SMA5J7.5CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1 mA, 12.9 V clamping voltage (VC) at 38.8 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J7.5CAHE3/5A datasheet, SMA5J7.5CAHE3/5A pinout, SMA5J7.5CAHE3/5A application, or SMA5J7.5CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, 150 °C junction temperature rating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling consistent clamping performance across repeated 10/1000 μs transients up to 500 W.
The SMA5J7.5CAHE3/5A is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 80 °C/W) and RθJL = 25 °C/W support reliable power dissipation in compact PCB layouts without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse voltage before clamping begins; sets operating margin for protected line |
| VBR min/max | 8.33 V / 9.21 V at 1 mA - defines precise breakdown threshold for predictable turn-on during overvoltage events |
| VC @ IPPM | 12.9 V at 38.8 A - clamping voltage under full 500 W surge; determines maximum stress on downstream ICs |
| PPPM | 500 W - peak pulse power handling with 10/1000 μs waveform; supports automotive ISO 7637-2 Pulse 1/2a/5a compliance |
| TJ max | +150 °C - enables use in under-hood automotive environments and industrial enclosures without derating |
| Polarity | Bidirectional - provides symmetrical protection on AC-coupled or floating signal lines without polarity concerns |
| Qualification | AEC-Q101 qualified - validated for automotive electronics reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking on bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Surge current return path | Both terminals are electrically symmetric; either terminal conducts during positive or negative transients |
| Anode (Cathode) | Surge current return path | Identical role to opposite terminal; no functional distinction in bidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift in harsh environments |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns; eliminates bake requirements pre-SMT |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed industrial and automotive systems |
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 jump-start surges in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to clamp transients before reaching interface ICs. Use Value: Clamps 500 W surges to ≤12.9 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor front-ends. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Bidirectional clamping element on 24 V DC field wiring to absorb repetitive 10/1000 μs transients. Use Value: Withstands >1000 surges at rated PPPM while maintaining VWM = 7.5 V margin above common-mode noise floor. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Input-stage protection for USB-C PD adapters and AC/DC converters subject to lightning-induced surges on primary-side rectifier outputs. IC Role / Device Role / Timing Role: Secondary-side TVS across bulk capacitor to limit overvoltage during AC line transients. Use Value: 12.9 V VC limits stress on 12 V-rated output capacitors and synchronous rectifier MOSFETs. | Use Scenario: Primary protection on Ethernet PHY interfaces and POTS line cards exposed to induced surges from nearby power cables. IC Role / Device Role / Timing Role: Bidirectional shunt device on differential pair to suppress common-mode transients without disrupting DC bias. Use Value: Symmetrical clamping preserves signal balance and avoids skew in 10/100BASE-TX data paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5CA-M3/5A | Halogen-free, RoHS-compliant; identical electrical specs and AEC-Q101 qualification; differs only in material composition | Preferred for halogen-free BOM requirements in EU/Asia markets; same mounting and thermal behavior | Select when halogen-free compliance is mandated by end-equipment environmental policy |
| SMCJ7.5CAHE3/5A | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W vs. 80 °C/W); 1500 W PPPM rating | Suitable for higher-power industrial applications where board space allows; not drop-in due to footprint mismatch | Choose for enhanced surge margin where layout permits larger footprint and improved thermal dissipation |
Compared with SMA5J7.5CAHE3/5A, the M3 variant offers identical protection performance with halogen-free materials, while the SMCJ7.5CAHE3/5A delivers triple the pulse power in a non-compatible footprint - making the former a direct material alternative and the latter a higher-capacity upgrade requiring PCB revision.
Availability
SMA5J7.5CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply with AEC-Q101 validation and RoHS compliance.
Supply support for SMA5J7.5CAHE3/5A 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 TVS devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications - targeting automotive, industrial, and communications systems where robustness against ISO 7637-2 and IEC 61000-4-5 threats is critical.
FAQ
What is the clamping voltage of SMA5J7.5CAHE3/5A at its rated peak pulse current?
The SMA5J7.5CAHE3/5A has a maximum clamping voltage (VC) of 12.9 V at 38.8 A peak pulse current (IPPM), measured under standardized 10/1000 μs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during a full 500 W transient event. The SMA5J7.5CAHE3/5A maintains this clamping performance across its qualified temperature range (-55 °C to +150 °C), ensuring consistent protection in automotive and industrial environments.
Is SMA5J7.5CAHE3/5A suitable for automotive applications?
Yes, SMA5J7.5CAHE3/5A is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, and it meets MSL Level 1 for lead-free reflow. The SMA5J7.5CAHE3/5A withstands load dump, jump-start, and ESD events per ISO 7637-2 and ISO 10605, making it appropriate for under-hood and cabin-mounted systems.
How does the bidirectional configuration of SMA5J7.5CAHE3/5A affect its circuit implementation?
The bidirectional configuration of SMA5J7.5CAHE3/5A means both terminals behave identically - there is no cathode/anode marking, and it clamps symmetrically for positive and negative transients. This eliminates polarity concerns during layout and simplifies protection of AC-coupled lines, differential buses (e.g., CAN, RS-485), or floating sensors. The SMA5J7.5CAHE3/5A can be placed directly across any two nodes requiring balanced overvoltage suppression without orientation checks.
What is the thermal resistance of SMA5J7.5CAHE3/5A, and how does it impact PCB layout?
The SMA5J7.5CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's DO-214AC specification. To maintain safe operation at full 500 W surge rating, designers must allocate adequate copper area and avoid excessive trace length; the SMA5J7.5CAHE3/5A does not require heatsinking in standard applications but benefits from thermal vias under pads for sustained duty cycles.
Does SMA5J7.5CAHE3/5A have a specified junction capacitance, and is it suitable for high-speed data lines?
No junction capacitance value is specified for SMA5J7.5CAHE3/5A in the official Vishay datasheet (Document Number: 88875, Rev. 09-Jan-2024). While its low capacitance is implied by the SMA package and TVS architecture, the absence of a published CJ value means it should not be selected for high-speed data lines (e.g., USB 2.0+, HDMI, PCIe) without empirical validation. For such applications, Vishay recommends dedicated low-capacitance TVS arrays; the SMA5J7.5CAHE3/5A is optimized for power and medium-speed signal protection instead.
SMA5J7.5CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J7.5CAHE3/5A FAQ
1.How can I place an order for SMA5J7.5CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5CAHE3/5A 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 SMA5J7.5CAHE3/5A reliable?
The price and inventory of SMA5J7.5CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.5CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.5CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5CAHE3/5A?
SMA5J7.5CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5CAHE3/5A 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 SMA5J7.5CAHE3/5A?
For technical support, including SMA5J7.5CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J7.5CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5CAHE3/5A 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 SMA5J7.5CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.5CAHE3/5A?
All SMA5J7.5CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5CAHE3/5A, 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 SMA5J7.5CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.5CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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