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Vishay General Semiconductor - Diodes Division P4SMA15CAHE3/5A
- Part No.:
- P4SMA15CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15CAHE3/5A.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,076
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Product details
Overview
P4SMA15CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 15 V standoff voltage (VWM), 17.1 V minimum breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use - deployed to protect MOSFETs and sensor signal lines in industrial and automotive control units.
For engineers reviewing the P4SMA15CAHE3/5A datasheet, P4SMA15CAHE3/5A pinout, P4SMA15CAHE3/5A application, or P4SMA15CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, 21.2 V maximum clamping voltage at 18.9 A peak pulse current, RoHS-compliant AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance of 120 °C/W junction-to-ambient.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 12.8 V), while the 10/1000 µs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5.
The device delivers 400 W peak pulse power up to 91 V and derates to 300 W above that threshold, with thermal performance governed by RθJA = 120 °C/W and RθJL = 30 °C/W. It meets MSL Level 1 per J-STD-020 and supports reflow soldering at 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1.0 mA - Confirmed voltage range where device transitions from high-impedance to low-impedance clamping state. |
| VC (Clamping Voltage) | 21.2 V at 18.9 A IPPM - Maximum voltage seen across protected circuit during 10/1000 µs surge; critical for IC-level overvoltage margin. |
| PPPM (Peak Pulse Power) | 400 W (≤91 V), 300 W (>91 V) - Surge energy handling capacity under standard lightning/surge test waveform; determines robustness against transient events. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Ensures minimal standby power loss and signal integrity degradation in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature defining operational reliability limit under sustained power dissipation or ambient heating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Molding compound meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | Not marked on device; symmetrical terminals enable polarity-agnostic placement on PCB. |
| Cathode | Current exit terminal in forward bias; common node for bidirectional conduction path | Not marked on bidirectional variants - no polarity identification required for layout or routing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints or external diode pairing. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line, 2 kV line-to-ground) in properly designed layouts. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring extended temperature and life-cycle reliability. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume automated SMT assembly. |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift over time, and resistance to humidity-induced parameter shift. |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface or IC input pins to clamp fast-rising surges before they reach sensitive analog front-ends or transceivers. Use Value: Limits voltage excursion to ≤21.2 V during 18.9 A transients, preserving ADC reference integrity and preventing latch-up in microcontrollers. |
Use Scenario: Shielding digital and analog I/O channels of programmable logic controllers from field-side ESD and motor drive coupling noise. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC input/output terminals, coordinated with upstream fuses and downstream filtering. Use Value: Maintains <1.0 µA leakage at 12.8 V stand-off, avoiding false triggering in high-impedance dry-contact sensing circuits. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers in network edge devices exposed to lightning-induced surges on unshielded cabling. IC Role / Device Role / Timing Role: First-stage clamping device on differential pair lines, preceding common-mode chokes and secondary TVS arrays. Use Value: Achieves 21.2 V clamping at 18.9 A with <1 ns response time, limiting transient energy delivered to transceiver ESD structures. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals or H-bridge outputs to absorb inductive kickback during PWM switching. Use Value: Handles 400 W peak pulses without degradation, sustaining >100,000 surge cycles per AEC-Q101 lifetime requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (12.8 V) and VC (24.4 V), but SMB package (DO-214AA); 600 W PPPM rating | Higher power handling but larger footprint; requires PCB pad redesign | Select when higher surge margin is needed and board space allows SMB footprint. |
| 1.5KE15CA | Through-hole TO-218 package; same VWM/VC specs but 1500 W PPPM and higher thermal mass | Not suitable for SMT-only production; used in legacy or high-reliability power supply designs | Choose only for through-hole assembly or where manual replacement serviceability is required. |
Compared with SMBJ15CA and 1.5KE15CA, P4SMA15CAHE3/5A offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 400 W surge capability - making it preferred for new automotive and industrial SMT designs where space, reliability, and process compatibility are jointly constrained.
Availability
P4SMA15CAHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, AEC-Q101 compliance, and surface-mount manufacturability.
Supply support for P4SMA15CAHE3/5A 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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA series was developed specifically for high-volume, space-constrained transient suppression in automotive, industrial, and communications systems - prioritizing AEC-Q101 compliance, low-profile packaging, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P4SMA15CAHE3/5A at its rated peak pulse current?
The P4SMA15CAHE3/5A has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 18.9 A under a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The P4SMA15CAHE3/5A maintains this clamping performance across its full operating temperature range.
Is P4SMA15CAHE3/5A suitable for automotive applications?
Yes, P4SMA15CAHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC requirements, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under harsh environmental conditions is mandatory. The P4SMA15CAHE3/5A meets these standards without derating.
What does the "CA" suffix indicate in P4SMA15CAHE3/5A?
The "CA" suffix in P4SMA15CAHE3/5A denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical electrical characteristics (VWM, VBR, VC) regardless of voltage polarity applied. This eliminates the need for polarity-aware placement and enables use on AC lines, differential pairs, or floating nodes. Unlike unidirectional variants (e.g., P4SMA15A), the P4SMA15CAHE3/5A has no cathode marking and functions identically in either orientation.
What is the thermal resistance of P4SMA15CAHE3/5A, and how does it affect PCB layout?
P4SMA15CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surge conditions, PCB layout must provide adequate copper area and avoid excessive trace length between the P4SMA15CAHE3/5A and ground planes - especially critical in high-duty-cycle industrial applications.
How does P4SMA15CAHE3/5A compare to unidirectional P4SMA15A in terms of leakage and breakdown behavior?
P4SMA15CAHE3/5A exhibits ≤1.0 µA maximum reverse leakage at its 12.8 V stand-off voltage, matching the unidirectional P4SMA15A's spec. Its breakdown voltage range (14.3–15.8 V) is identical to P4SMA15A, but applies equally in both directions due to symmetrical construction. Unlike P4SMA15A, which conducts only in reverse bias and requires correct polarity orientation, the P4SMA15CAHE3/5A delivers identical clamping in either direction - simplifying layout and eliminating risk of reverse installation. Both share the same 400 W PPPM rating and SMA package.
P4SMA15CAHE3/5A 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)
P4SMA15CAHE3/5A FAQ
1.How can I place an order for P4SMA15CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15CAHE3/5A 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 P4SMA15CAHE3/5A reliable?
The price and inventory of P4SMA15CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA15CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15CAHE3/5A?
P4SMA15CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15CAHE3/5A 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 P4SMA15CAHE3/5A?
For technical support, including P4SMA15CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA15CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA15CAHE3/5A 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 P4SMA15CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA15CAHE3/5A?
All P4SMA15CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15CAHE3/5A, 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 P4SMA15CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA15CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA15CAHE3/5A Tags
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