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Vishay General Semiconductor - Diodes Division P4SMA15CAHE3/61
- Part No.:
- P4SMA15CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15CAHE3/61.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA15CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 12.8 V stand-off voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 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 to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA15CAHE3/61 datasheet, P4SMA15CAHE3/61 pinout, P4SMA15CAHE3/61 application, or P4SMA15CAHE3/61 equivalent, this device serves as an AEC-Q101 qualified, RoHS-compliant bidirectional TVS for ESD and surge protection where low-profile mounting, fast response (<1 ns), and stable clamping under repetitive transients are required.
Technical Context
The P4SMA15CAHE3/61 operates as a bidirectional avalanche diode, symmetrically clamping voltage surges in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while its thermal resistance (RθJA = 120 °C/W) supports operation up to +150 °C junction temperature.
It delivers 400 W peak pulse power per 10/1000 µs waveform when mounted on 5.0 mm × 5.0 mm copper pads, with derated capability above 25 °C ambient. The device meets J-STD-020 MSL Level 1 and passes JESD 201 Class 2 whisker testing, confirming suitability for automated SMT assembly and high-reliability automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - Confirmed avalanche conduction threshold; tight tolerance enables precise overvoltage protection. |
| VC (Clamping Voltage) | 21.2 V at 18.9 A - Peak voltage seen by protected circuit during 10/1000 µs transient; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability under standard lightning/surge waveform; rated at TA = 25 °C. |
| IPPM (Peak Pulse Current) | 18.9 A - Maximum non-repetitive surge current handled at VC; determines minimum trace width and PCB layout robustness. |
| TJmax | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; supports PPAP documentation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated terminals, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either end connects to protected line; clamps positive and negative transients equally. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3/4 surges without cascading failure. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring zero field failures. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without popcorn effect or delamination. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge). |
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 vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point, shunting surge energy to ground before reaching signal conditioning ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 2 kV surge, preventing latch-up or permanent damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field wiring surges induced by motor contactors or relay coils. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC I/O lines, coordinated with upstream fusing and filtering to meet IEC 61000-4-4/5 immunity requirements. Use Value: Limits transient voltage to ≤21.2 V, ensuring compatibility with 24 V-rated optocouplers and microcontroller GPIOs while surviving ≥100,000 surge events. |
| Consumer Power Adapter Input Protection | Telecom Line Interface Protection |
|
Use Scenario: Clamping AC/DC adapter primary-side transients caused by mains switching noise or nearby lightning-induced coupling. IC Role / Device Role / Timing Role: Secondary-level TVS across bridge rectifier output or bulk capacitor, absorbing residual spikes after MOV-based primary protection. Use Value: Prevents overvoltage stress on PWM controller ICs and electrolytic capacitors, extending product lifetime in unregulated wall adapters. |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers connected to outdoor cabling exposed to induced surges and ESD. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional clamp on differential data lines, preserving signal rise/fall times while meeting Telcordia GR-1089-CORE Level 3. Use Value: Delivers <1 ns response and 21.2 V clamping to preserve signal eye diagram integrity and prevent receiver saturation during 10/1000 µs surges. |
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 | Same VWM/VBR/VC, but SMB package (DO-214AA); 600 W PPPM, higher thermal mass. | Preferred for higher-energy surges (>400 W) or where board space allows larger footprint. | Select SMBJ15CA when surge energy exceeds 400 W or thermal dissipation demands lower RθJA. |
| 1.5KE15CA | Through-hole TO-204AE (DO-201AE); 1500 W PPPM, slower response due to higher parasitic inductance. | Suitable for legacy designs, high-power AC mains protection, or prototyping with breadboards. | Choose 1.5KE15CA only for through-hole assembly or where 1.5 kW surge handling is mandatory. |
Compared with SMBJ15CA and 1.5KE15CA, the P4SMA15CAHE3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it the preferred choice for space-constrained, automotive-grade SMT designs requiring validated reliability and fast transient response.
Availability
P4SMA15CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA15CAHE3/61 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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series was developed for high-volume, surface-mount transient suppression in automotive, industrial, and consumer systems - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping behavior across temperature and lifetime.
FAQ
What is the clamping voltage of P4SMA15CAHE3/61 at its rated peak pulse current?
The P4SMA15CAHE3/61 has a maximum clamping voltage (VC) of 21.2 V at 18.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads and represents the upper voltage limit imposed on protected circuitry during surge events. The P4SMA15CAHE3/61 maintains this clamping performance across its full operating temperature range.
Is P4SMA15CAHE3/61 suitable for automotive applications?
Yes, the P4SMA15CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, and is rated for operation from –65 °C to +150 °C. The P4SMA15CAHE3/61 is commonly deployed in body control modules, sensor interfaces, and infotainment power supplies.
What does the "CA" suffix indicate in P4SMA15CAHE3/61?
The "CA" suffix in P4SMA15CAHE3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA15A), the P4SMA15CAHE3/61 has no cathode band marking and functions identically regardless of polarity applied across its terminals.
How does the thermal resistance of P4SMA15CAHE3/61 affect PCB layout?
The P4SMA15CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout. To maintain safe junction temperatures under repetitive surges, designers must use ≥5.0 mm × 5.0 mm copper pads per terminal and avoid excessive trace length or isolation. The P4SMA15CAHE3/61 thermal performance degrades significantly with smaller pads or poor copper pour.
Can P4SMA15CAHE3/61 replace P4SMA15A in a design?
No - the P4SMA15CAHE3/61 is bidirectional, while P4SMA15A is unidirectional and marked with a cathode band. Substituting them requires verifying circuit polarity, grounding scheme, and transient directionality. In a unidirectional application (e.g., DC rail protection), using the P4SMA15CAHE3/61 introduces unnecessary conduction during normal reverse bias and may increase leakage. Always validate the P4SMA15CAHE3/61 in context before replacement.
P4SMA15CAHE3/61 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:
- Discontinued at Digi-Key
- 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)
P4SMA15CAHE3/61 FAQ
1.How can I place an order for P4SMA15CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15CAHE3/61 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 P4SMA15CAHE3/61 reliable?
The price and inventory of P4SMA15CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA15CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15CAHE3/61?
P4SMA15CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15CAHE3/61 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 P4SMA15CAHE3/61?
For technical support, including P4SMA15CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA15CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA15CAHE3/61 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 P4SMA15CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA15CAHE3/61?
All P4SMA15CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15CAHE3/61, 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 P4SMA15CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA15CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA15CAHE3/61 Tags
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