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Vishay General Semiconductor - Diodes Division SMA5J15CAHE3_A/H
- Part No.:
- SMA5J15CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15CAHE3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,609
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Product details
Overview
SMA5J15CAHE3_A/H 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), 16.7–18.5 V breakdown voltage (VBR), 24.4 V clamping voltage at 20.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J15CAHE3_A/H datasheet, SMA5J15CAHE3_A/H pinout, SMA5J15CAHE3_A/H application, or SMA5J15CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, RoHS-compliant construction with matte tin leads, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA suffix configuration, enabling protection against positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time under ESD and lightning-induced surges.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable operation in thermally constrained automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - breakdown occurs within this range at 1 mA test current |
| VC @ IPPM | 24.4 V - clamps transients to ≤24.4 V when subjected to 20.5 A 10/1000 µs surge |
| PPPM | 500 W - peak pulse power handling capability per standard 10/1000 µs waveform |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; reflow compatible up to 260 °C peak |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, with cathode band omitted per bidirectional design convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (1) | Surge current path (bidirectional) | Either terminal accepts transient current in either direction; no fixed polarity |
| Anode/Cathode (2) | Surge current return path (bidirectional) | Completes symmetrical clamping loop; identical electrical behavior as Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without external polarity management |
| Glass passivated junction | Ensures low leakage (<1.0 µA) and long-term stability under humidity and thermal stress |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor modules |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| Automated placement compatibility | SMA package geometry and lead finish meet IPC-A-610 Class 2 requirements for high-yield SMT assembly |
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 inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair or supply rail to clamp ±24.4 V surges before reaching downstream ICs. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and analog front-ends during ISO 16750-2 and ISO 7637-2 compliance testing. | Use Scenario: Safeguarding digital input/output terminals of programmable logic controllers against field-wiring induced surges in factory automation environments. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between signal line and ground to shunt >500 W transient energy within nanoseconds. Use Value: Maintains functional safety integrity by limiting voltage excursions to <24.4 V during 1 kV/500 A surge events per IEC 61000-4-5. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY interface circuits and RS-485 transceivers from ESD and lightning-induced surges in outdoor telecom equipment. IC Role / Device Role / Timing Role: Bidirectional clamping device placed at connector entry point to divert common-mode transients before entering isolation barrier. Use Value: Achieves >15 kV contact ESD immunity (IEC 61000-4-2) and 4 kV lightning surge robustness (IEC 61000-4-5) without degrading signal integrity. | Use Scenario: Suppressing line-side surges on AC-DC adapter primary-side rectifier outputs and secondary-side DC bus rails. IC Role / Device Role / Timing Role: Transient suppressor mounted across bulk capacitor to absorb energy from MOV failure or lightning coupling. Use Value: Extends adapter lifetime by preventing overvoltage stress on secondary-side controllers and optocouplers during repeated 500 W surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15CAHM3_A/H | Halogen-free version; identical electrical specs and AEC-Q101 qualification | Required where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Select SMA5J15CAHM3_A/H when RoHS + halogen-free certification is contractually required |
| SMC5J15CAHE3_A/H | Larger SMC (DO-214AB) package; same VWM/VBR/VC but higher thermal mass and 600 W PPPM rating | Better suited for high-temperature ambient (>105 °C) or higher-energy surge environments | Choose SMC5J15CAHE3_A/H when board layout allows larger footprint and system-level surge tests exceed 500 W |
Compared with SMA5J15CAHE3_A/H, SMA5J15CAHM3_A/H offers identical protection performance with halogen-free molding compound, while SMC5J15CAHE3_A/H provides higher surge margin and thermal derating headroom at the cost of increased PCB area - both require validation of mechanical fit and layout clearance.
Availability
SMA5J15CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, AEC-Q101 qualification, and RoHS compliance.
Supply support for SMA5J15CAHE3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial applications, balancing low clamping voltage, fast response, and robust surge handling in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in SMA5J15CAHE3_A/H?
The "CA" suffix in SMA5J15CAHE3_A/H denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. This eliminates the need for polarity-aware placement and makes it ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and ungrounded power rails. Unlike unidirectional variants (e.g., SMA5J15A), SMA5J15CAHE3_A/H has no cathode band marking and exhibits symmetric VBR and VC characteristics.
Is SMA5J15CAHE3_A/H qualified for automotive use?
Yes, SMA5J15CAHE3_A/H is AEC-Q101 qualified, confirming its reliability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The "HE3" suffix explicitly indicates RoHS-compliant construction with AEC-Q101 qualification. Test validation covers temperature cycling, highly accelerated life testing (HALT), and surge robustness per automotive stress profiles - making SMA5J15CAHE3_A/H suitable for under-hood and cabin-mounted systems.
What is the maximum clamping voltage of SMA5J15CAHE3_A/H and under what conditions?
The maximum clamping voltage (VC) of SMA5J15CAHE3_A/H is 24.4 V, measured at a peak pulse current (IPPM) of 20.5 A using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and reflects worst-case voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMA (DO-214AC) package of SMA5J15CAHE3_A/H affect thermal performance?
The SMA (DO-214AC) package of SMA5J15CAHE3_A/H delivers a 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. Its compact size enables high-density layout but requires adherence to recommended pad geometry to maintain thermal derating curves. For sustained surge duty cycles, thermal relief via internal layer copper pours or adjacent thermal vias is advised to prevent junction temperature exceeding 150 °C.
Can SMA5J15CAHE3_A/H replace SMA5J15A in an existing design?
No - SMA5J15CAHE3_A/H cannot directly replace SMA5J15A without circuit review, because SMA5J15A is unidirectional (cathode-marked, asymmetric conduction), while SMA5J15CAHE3_A/H is bidirectional (no marking, symmetric clamping). Substitution may cause unintended forward conduction or incorrect biasing in DC-coupled circuits. Use SMA5J15CAHE3_A/H only where bidirectional protection is explicitly required and layout accommodates non-polarized placement.
SMA5J15CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_A/H FAQ
1.How can I place an order for SMA5J15CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15CAHE3_A/H 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_A/H reliable?
The price and inventory of SMA5J15CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J15CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15CAHE3_A/H?
SMA5J15CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15CAHE3_A/H 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_A/H?
For technical support, including SMA5J15CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15CAHE3_A/H requirements.
6.How does Aetrix verify that SMA5J15CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J15CAHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J15CAHE3_A/H?
All SMA5J15CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15CAHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for SMA5J15CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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