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Vishay General Semiconductor - Diodes Division P4SMA11CAHE3/5A
- Part No.:
- P4SMA11CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11CAHE3/5A.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA11CAHE3/5A 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 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V standoff voltage (VWM), 15.6 V maximum clamping voltage (VC) at 25.6 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and ICs in automotive and industrial control systems.
For engineers reviewing the P4SMA11CAHE3/5A datasheet, P4SMA11CAHE3/5A pinout, P4SMA11CAHE3/5A application, or P4SMA11CAHE3/5A equivalent, this device delivers AEC-Q101 qualified transient suppression for bidirectional signal lines, with verified thermal resistance (RθJA = 120 °C/W), low leakage (<5 µA at VWM), and MSL Level 1 moisture sensitivity - critical for high-reliability automotive PCB designs.
Technical Context
The P4SMA11CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), while the SMA package supports automated placement and meets UL 94 V-0 flammability.
Rated for -65 °C to +150 °C operating junction temperature, it delivers 400 W peak pulse power (derated to 300 W above 91 V), with 120 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads. It is AEC-Q101 qualified (HE3 suffix), RoHS-compliant, and rated for repetitive surge duty cycle ≤0.01%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at IT = 1 mA - defines precise clamping onset threshold for bidirectional protection |
| VWM | 9.4 V - maximum continuous reverse working voltage before leakage exceeds 5 µA |
| VC @ IPPM | 15.6 V at 25.6 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient power handling capability under standardized surge waveform |
| IPPM | 25.6 A - maximum non-repetitive peak pulse current supported without failure |
| RθJA | 120 °C/W - thermal resistance determines safe power derating in real PCB layouts |
| Junction Temp Range | -65 °C to +150 °C - enables operation in under-hood automotive and industrial environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to protected line; conducts during negative surges relative to cathode reference |
| Cathode | Transient return path (bidirectional) | Connects to protected line; conducts during positive surges relative to anode reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V supply rails |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected 3.3 V/5 V logic and analog front-ends |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly without pre-baking |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over 15-year service life |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs against load dump and ESD in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Limits induced voltage to ≤15.6 V during 25.6 A surge, preventing latch-up or gate oxide damage in ISO 11898-compliant transceivers. |
Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Symmetric clamping device across differential pair to suppress common-mode and differential-mode transients. Use Value: Maintains signal integrity by clamping surges within ±15.6 V window while adding <1 pF junction capacitance at 0 V bias. |
| Consumer Power Adapter Input Stage | Telecom Ethernet Port Surge Protection |
Use Scenario: Secondary-side transient suppression on 12 V DC output rails of wall adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS after primary-side MOV and secondary-side filter, absorbing residual energy before DC-DC converters. Use Value: Absorbs up to 400 W for 1 ms without degradation, enabling compliance with IEC 61000-4-5 Ed.3 Class B immunity testing. |
Use Scenario: Protecting PoE-powered Ethernet PHYs (e.g., IEEE 802.3af/at) from induced surges on data pairs. IC Role / Device Role / Timing Role: Bidirectional clamp on each twisted pair, referenced to isolated ground plane to avoid ground loop coupling. Use Value: Withstands 10/1000 µs surges up to 25.6 A while maintaining <5 µA leakage at 9.4 V, preserving link detection functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Higher package thermal mass (SMB/DO-214AA); RθJA = 75 °C/W; same VBR, VC, and PPPM | Better power dissipation in high-duty-cycle scenarios; requires larger PCB footprint | Select when board layout allows SMB size and thermal performance outweighs space constraints |
| 1.5KE11CA | Through-hole (DO-201AE); 1500 W PPPM; higher VC = 18.2 V; slower response due to parasitic inductance | Suitable for legacy through-hole designs or high-energy primary-side protection | Choose only for non-SMT platforms where 1.5 kW surge margin justifies mechanical mounting and layout overhead |
Compared with SMBJ11CA and 1.5KE11CA, the P4SMA11CAHE3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained, high-volume automotive and industrial SMT assemblies requiring validated reliability.
Availability
P4SMA11CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom power-over-Ethernet systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA11CAHE3/5A 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets cost-sensitive, high-volume transient protection applications where AEC-Q101 qualification, tight VBR tolerance, and surface-mount compatibility are mandatory - especially in ECUs, battery management, and sensor signal conditioning.
FAQ
What is the meaning of the "CA" suffix in P4SMA11CAHE3/5A?
The "CA" suffix in P4SMA11CAHE3/5A indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA11A), it has no polarity marking and functions identically in either orientation, making it ideal for AC-coupled or differential signal lines such as CAN bus or audio interfaces. This is confirmed in Vishay's P4SMA datasheet revision 09-Jan-2024, section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P4SMA11CAHE3/5A suitable for automotive applications?
Yes, P4SMA11CAHE3/5A is explicitly AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering information table. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements, and is rated for operation from -65 °C to +150 °C. Its 400 W peak pulse power and low clamping voltage make it appropriate for protecting automotive sensors, LIN transceivers, and body control module power rails - all documented in the P4SMA Series datasheet (Doc. #88367).
What is the maximum clamping voltage of P4SMA11CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of P4SMA11CAHE3/5A is 15.6 V at 25.6 A peak pulse current with a 10/1000 µs waveform, as specified in the Electrical Characteristics table on page 2 of the Vishay P4SMA datasheet. This value represents the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream ICs (e.g., 3.3 V or 5 V microcontrollers) remain within absolute maximum ratings.
How does the HE3 suffix differ from E3 or M3 in P4SMA11CAHE3/5A?
The "HE3" suffix in P4SMA11CAHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification, whereas "E3" is RoHS-compliant commercial grade only, and "M3" adds halogen-free compliance. The HE3 variant undergoes additional automotive-specific reliability testing (e.g., HTGB, TCT, H3TRB) and is approved for use in safety-critical vehicle subsystems - a distinction clearly defined in the "MECHANICAL DATA" section of the P4SMA datasheet (Rev. 09-Jan-2024).
What is the standoff voltage (VWM) of P4SMA11CAHE3/5A, and why does it matter?
The standoff voltage (VWM) of P4SMA11CAHE3/5A is 9.4 V - the maximum continuous reverse voltage the device can block without exceeding 5 µA leakage current. This parameter ensures the TVS remains inactive during normal operation (e.g., on a 9 V automotive supply rail), avoiding power loss or false triggering, while still responding instantly to transients exceeding 10.5 V (VBR min). It is a key selection criterion for matching system operating voltage margins.
P4SMA11CAHE3/5A 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA11CAHE3/5A FAQ
1.How can I place an order for P4SMA11CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11CAHE3/5A 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 P4SMA11CAHE3/5A reliable?
The price and inventory of P4SMA11CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA11CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11CAHE3/5A?
P4SMA11CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11CAHE3/5A 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 P4SMA11CAHE3/5A?
For technical support, including P4SMA11CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA11CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA11CAHE3/5A 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 P4SMA11CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA11CAHE3/5A?
All P4SMA11CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11CAHE3/5A, 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 P4SMA11CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA11CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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