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Vishay General Semiconductor - Diodes Division SMA5J15CAHE3/5A
- Part No.:
- SMA5J15CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15CAHE3/5A.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,867
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Product details
Overview
SMA5J15CAHE3/5A 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 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 20.5 A peak pulse current, and 500 W peak pulse power rating 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 SMA5J15CAHE3/5A datasheet, SMA5J15CAHE3/5A pinout, SMA5J15CAHE3/5A application, or SMA5J15CAHE3/5A equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, RoHS-compliant HE3 suffix, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transients exceeding its reverse stand-off voltage. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the bidirectional configuration enables symmetrical clamping on AC-coupled or differential lines without polarity concerns.
The device is rated for 150 °C maximum junction temperature and exhibits 80 °C/W typical junction-to-ambient thermal resistance when mounted per recommended pad layout. Its 500 W peak pulse power capability is derated linearly above 25 °C ambient, maintaining robust protection across automotive under-hood and industrial control environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 16.7 V / 18.5 V - Breakdown voltage range at 1 mA test current; ensures reliable turn-on margin above VWM. |
| VC @ IPPM | 24.4 V - Clamping voltage at 20.5 A peak pulse current; limits transient voltage seen by downstream ICs. |
| PPPM | 500 W - Peak pulse power handling with 10/1000 µs waveform; supports high-energy surges like ISO 7637-2 Pulse 5a. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial enclosures. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with standard reflow profiles. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow). Bidirectional construction means no polarity marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal lines without polarity constraints or external diode pairing. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage (<1.0 µA), and long-term reliability under thermal and humidity stress. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces. |
| MSL Level 1 compliance | Supports standard SMT assembly without dry-pack or baking requirements, reducing manufacturing overhead. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) in vehicle ECUs from load dump and ISO 16750-2 transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector or IC input pin to clamp overvoltage before it reaches signal conditioning circuitry. Use Value: Limits clamped voltage to 24.4 V during 20.5 A surge, safeguarding 3.3 V/5 V microcontrollers and ADC front-ends without additional series impedance. |
Use Scenario: Safeguarding RS-485, 4–20 mA loop, or digital I/O lines in PLC modules exposed to lightning-induced surges and relay switching noise. IC Role / Device Role / Timing Role: Primary line-level TVS element on field-side PCB traces, coordinated with gas discharge tubes or MOVs for multi-stage protection. Use Value: Withstands 500 W pulses and maintains <1.0 µA leakage at 15 V, preserving signal integrity and minimizing standby power loss in always-on systems. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side DC bus protection in wall adapters and USB PD chargers subjected to conducted EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Fast-response clamping device placed after primary filter stage to absorb residual energy not suppressed upstream. Use Value: Responds in <1 ps to transients, clamping within 24.4 V while dissipating up to 500 W - enabling compact designs without oversized capacitors or chokes. |
Use Scenario: Overvoltage protection on Ethernet PHY or DSL line interface circuits in residential gateways and base station equipment. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into front-end protection network to handle both normal-mode and common-mode surges on twisted-pair lines. Use Value: Symmetrical clamping eliminates need for dual unidirectional devices, reducing BOM count and PCB area while meeting GR-1089-CORE telecom surge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15CA-M3/5A | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; differs only in material composition. | No functional difference; selected where halogen-free compliance is mandated by end-equipment environmental policy. | Choose SMA5J15CA-M3/5A if halogen-free materials are required; otherwise SMA5J15CAHE3/5A offers same performance with standard RoHS compliance. |
| SMA6J15CAHE3/5A | 600 W peak pulse power (vs. 500 W), same VWM/VC, larger thermal mass; otherwise identical footprint and pinout. | Higher energy handling enables longer surge duration support (e.g., extended ISO 7637-2 Pulse 5b) without derating. | Select SMA6J15CAHE3/5A when system-level surge testing exceeds 500 W requirements; SMA5J15CAHE3/5A remains optimal for cost-sensitive, space-constrained designs meeting standard 500 W spec. |
Compared with SMA5J15CA-M3/5A, SMA5J15CAHE3/5A provides identical surge protection performance with standard RoHS compliance, while SMA6J15CAHE3/5A delivers +20 % peak power headroom in the same SMA package - enabling design flexibility for evolving EMC test margins without layout change.
Availability
SMA5J15CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply, AEC-Q101 validation, and RoHS-compliant sourcing.
Supply support for SMA5J15CAHE3/5A 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in automotive, industrial, and communications systems - delivering robust 500 W surge handling in the compact SMA package with AEC-Q101 qualification.
FAQ
What is the clamping voltage of the SMA5J15CAHE3/5A at its rated peak pulse current?
The SMA5J15CAHE3/5A has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current of 20.5 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J15CAHE3/5A maintains this clamping performance across its full operating temperature range when mounted per the recommended pad layout.
Is the SMA5J15CAHE3/5A suitable for automotive applications?
Yes, the SMA5J15CAHE3/5A is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity, and validated performance across -55 °C to +150 °C junction temperature range - all confirmed per AEC-Q101 stress test requirements. The SMA5J15CAHE3/5A meets these qualifications without derating.
Does the SMA5J15CAHE3/5A have polarity markings on the package?
No, the SMA5J15CAHE3/5A does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants that feature a cathode band, the SMA5J15CAHE3/5A uses symmetrical internal structure so both terminals perform identically in either direction. This eliminates orientation concerns during automated placement and simplifies layout for AC-coupled or differential signal paths.
What is the maximum reverse leakage current for the SMA5J15CAHE3/5A at its stand-off voltage?
The SMA5J15CAHE3/5A exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage preserves signal integrity and minimizes power loss in always-on or battery-powered systems. Leakage remains within specification across the full -55 °C to +125 °C operating ambient range, as verified in Vishay's characterization data.
How does the HE3 suffix in SMA5J15CAHE3/5A differ from the E3 suffix?
The HE3 suffix in SMA5J15CAHE3/5A indicates RoHS-compliant construction with AEC-Q101 qualification, whereas the E3 suffix denotes RoHS compliance only (commercial grade). Both share identical electrical characteristics and SMA package dimensions, but SMA5J15CAHE3/5A undergoes additional automotive-grade reliability testing including temperature cycling, HTRB, and ESD verification. The SMA5J15CAHE3/5A is therefore specified for mission-critical automotive applications where qualification evidence is mandatory.
SMA5J15CAHE3/5A 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- 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)
SMA5J15CAHE3/5A FAQ
1.How can I place an order for SMA5J15CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15CAHE3/5A 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 SMA5J15CAHE3/5A reliable?
The price and inventory of SMA5J15CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J15CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15CAHE3/5A?
SMA5J15CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15CAHE3/5A 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 SMA5J15CAHE3/5A?
For technical support, including SMA5J15CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J15CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J15CAHE3/5A 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 SMA5J15CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J15CAHE3/5A?
All SMA5J15CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15CAHE3/5A, 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 SMA5J15CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J15CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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