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Vishay General Semiconductor - Diodes Division P4SMA15CAHE3_A/H
- Part No.:
- P4SMA15CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15CAHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA15CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features 15 V standoff voltage (VWM), 17.1 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 18.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA15CAHE3_A/H datasheet, P4SMA15CAHE3_A/H pinout, P4SMA15CAHE3_A/H application, or P4SMA15CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.24), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA15CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
Rated for 150 °C maximum junction temperature and derated above 25 °C ambient, it delivers 400 W peak pulse power below 91 V (300 W above), with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets UL 497B recognition and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 12.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - Voltage at which device enters avalanche region; ensures precise, repeatable clamping onset. |
| VC (Clamping Voltage) | 21.2 V at 18.9 A - Maximum voltage seen by protected circuit during 10/1000 μs transient; critical for IC-level overvoltage safety. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity under standardized 10/1000 μs surge; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) events. |
| ID (Reverse Leakage) | 1.0 μA at 12.8 V - Negligible standby current; avoids loading sensitive analog or low-power sensor circuits. |
| TJ max. | 150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. No polarity marking - bidirectional symmetry confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; no fixed polarity required. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode terminal; terminals interchangeable due to symmetrical construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN, RS-485) without polarity concerns. |
| 400 W peak pulse power | Handles repetitive surge events up to 0.01% duty cycle, supporting robust protection in motor drive feedback or power supply monitoring. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensor interfaces, and body electronics. |
| MSL Level 1 (260 °C peak) | Permits standard reflow soldering without pre-baking; simplifies manufacturing for high-volume automotive and industrial PCB assembly. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime stress conditions. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay or chassis modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp ±200 V transients before reaching ADC input or signal conditioner. Use Value: Prevents latch-up or permanent damage to 12-bit SAR ADCs and rail-to-rail op-amps operating at 3.3 V or 5 V supply rails. |
Use Scenario: Shielding 24 V digital input channels on PLC modules against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, limiting voltage to ≤21.2 V during 1 kV/2 Ω surge events. Use Value: Maintains functional safety integrity by ensuring optocoupler LED remains within absolute maximum ratings during EMC immunity testing. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable medical devices against ESD per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF at VWM) placed adjacent to USB connector to suppress sub-ns ESD events. Use Value: Preserves signal integrity with <1% bit error rate degradation at 480 Mbps while meeting Class B EMC compliance. |
Use Scenario: Protecting RJ-11 telephone line interface ICs in VoIP gateways from lightning-induced longitudinal surges on tip/ring pairs. IC Role / Device Role / Timing Role: Bidirectional clamp installed between transformer secondary and SLIC device, rated for 10/1000 μs waveform per ITU-T K.20. Use Value: Limits voltage across SLIC to <25 V during 100 V/100 Ω surge, preventing internal overvoltage shutdown and call drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Higher package thermal mass (SMB/DO-214AA); 600 W PPPM rating; 24.4 V VC at 24.4 A. | Better suited for higher-energy surges but requires larger PCB footprint; less optimal for space-constrained automotive modules. | Select when surge energy exceeds 400 W and board layout allows SMB footprint. |
| 1.5KE15CA | Through-hole TO-218 package; 1500 W PPPM; 24.4 V VC at 61.5 A; no AEC-Q101 qualification. | Used in legacy industrial power supplies where manual assembly and high-energy clamping dominate over automotive reliability requirements. | Choose only for non-automotive, through-hole designs requiring >1 kW surge handling and no qualification mandates. |
Compared with SMBJ15CA and 1.5KE15CA, the P4SMA15CAHE3_A/H offers the smallest footprint among AEC-Q101-qualified 15 V bidirectional TVS diodes, enabling dense routing in ADAS camera modules and reducing system-level BOM count via direct SMT integration.
Availability
P4SMA15CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O conditioning, and telecom line interface applications requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for P4SMA15CAHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume surge protection needs in automotive, industrial, and consumer electronics - engineered for automated assembly, AEC-Q101 compliance, and consistent clamping performance across temperature and life cycle.
FAQ
What is the clamping voltage of P4SMA15CAHE3_A/H at its rated peak pulse current?
The P4SMA15CAHE3_A/H has a maximum clamping voltage (VC) of 21.2 V at 18.9 A peak pulse current (IPPM) under the 10/1000 μs waveform condition. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during transient events. The low VC ensures compatibility with 3.3 V and 5 V logic interfaces while maintaining margin against IC absolute maximum ratings.
Is P4SMA15CAHE3_A/H suitable for automotive applications?
Yes, P4SMA15CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It supports operation from −65 °C to +150 °C, passes temperature cycling and HTRB tests, and is rated for under-hood environments such as engine control units and ADAS sensor nodes where transient immunity is critical.
Does P4SMA15CAHE3_A/H have polarity markings on the package?
No, P4SMA15CAHE3_A/H has no polarity markings because it is a bidirectional TVS diode. Both terminals are functionally identical - the device clamps symmetrically for positive and negative transients. This eliminates orientation errors during automated placement and simplifies layout for differential or AC-coupled signal paths like CAN or RS-485 bus lines.
What is the standoff voltage (VWM) rating for P4SMA15CAHE3_A/H?
The standoff voltage (VWM) for P4SMA15CAHE3_A/H is 12.8 V, representing the maximum DC or continuous peak voltage the device can withstand without entering avalanche conduction. This rating provides a 10–15% margin above typical 12 V automotive nominal systems and aligns with IEC 61000-4-5 surge test levels, ensuring reliable blocking during normal operation while triggering promptly during overvoltage events.
How does the thermal resistance of P4SMA15CAHE3_A/H affect PCB layout?
P4SMA15CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, which means PCB copper pad area directly impacts power dissipation capability. Vishay specifies mounting on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power. Reducing pad size increases thermal impedance and risks exceeding 150 °C junction temperature during repetitive surges, so layout must follow the recommended pad dimensions in the DO-214AC outline drawing.
P4SMA15CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA15CAHE3_A/H FAQ
1.How can I place an order for P4SMA15CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15CAHE3_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 P4SMA15CAHE3_A/H reliable?
The price and inventory of P4SMA15CAHE3_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 P4SMA15CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA15CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15CAHE3_A/H?
P4SMA15CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15CAHE3_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 P4SMA15CAHE3_A/H?
For technical support, including P4SMA15CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA15CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA15CAHE3_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 P4SMA15CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA15CAHE3_A/H?
All P4SMA15CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15CAHE3_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 P4SMA15CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA15CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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