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Vishay General Semiconductor - Diodes Division P4SMA110CAHE3_A/I
- Part No.:
- P4SMA110CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA110CAHE3_A/I.pdf
- Description:
- TVS DIODE 94VWM 152VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,184
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Product details
Overview
P4SMA110CAHE3_A/I 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 a 94.0 V standoff voltage (VWM), 105–116 V breakdown voltage (VBR) at 1 mA, 152 V maximum clamping voltage (VC) at 2.0 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), targeting protection of automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA110CAHE3_A/I datasheet, P4SMA110CAHE3_A/I pinout, P4SMA110CAHE3_A/I application, or P4SMA110CAHE3_A/I equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive electronics and ruggedized industrial control designs.
Technical Context
The P4SMA110CAHE3_A/I operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling transient suppression on AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports automated SMT placement and meets UL 94 V-0 flammability requirements.
Thermally, it exhibits a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and a junction-to-lead value of 30 °C/W, requiring minimal copper pad area (0.2" × 0.2") for rated 400 W pulse handling. Derating above 25 °C ambient follows Fig. 2, maintaining safe operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 94.0 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 105–116 V at IT = 1 mA - Avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 152 V at IPPM = 2.0 A (10/1000 µs) - Peak voltage seen by protected circuit under full-rated surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy absorption capability with standard 10/1000 µs waveform; enables robust protection against inductive switching transients. |
| ID (Max Reverse Leakage) | 1.0 µA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
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), cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | One terminal of symmetrical avalanche junction; conducts during positive transients relative to other terminal. |
| Anode / Cathode (shared) | Transient current entry/exit point (bidirectional) | No fixed polarity; either terminal serves as anode or cathode depending on transient polarity - enables AC line protection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity constraints. |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy surges from inductive load switching (e.g., solenoids, relays) common in automotive body control modules. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power supplies. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking; simplifies manufacturing integration. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, reducing drift in long-term deployed systems like industrial PLCs. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to limit transient voltage before it reaches sensitive analog front-ends or communication PHYs. Use Value: Maintains signal fidelity under ±100 V transients while meeting AEC-Q101 requirements - eliminating need for redundant protection schemes. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers (PLCs) against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input channels, absorbing repetitive 400 W pulses without degradation across 10⁵+ cycles. Use Value: Extends system uptime by preventing latch-up or damage to optocouplers and microcontroller GPIOs during factory floor electrical noise events. |
| Telecom Line Interface | Consumer Appliance Power Supply |
|
Use Scenario: Shielding RS-485/RS-232 data lines in base station backhaul equipment from lightning-induced surges and EFT bursts. IC Role / Device Role / Timing Role: Fast-response bidirectional suppressor placed between connector and transceiver IC, with sub-1 ns response minimizing overshoot. Use Value: Achieves <152 V clamping at 2.0 A ensures compliance with ITU-T K.21 basic protection level for telecom infrastructure. |
Use Scenario: Suppressing switch-mode power supply (SMPS) turn-off spikes and ESD events on AC input rectifier outputs in smart home appliances. IC Role / Device Role / Timing Role: Secondary transient clamp after bridge rectifier, limiting voltage stress on bulk capacitor and primary-side controller. Use Value: Prevents premature electrolytic capacitor failure and improves surge immunity to IEC 61000-4-5 Level 3 (2 kV line-earth). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CA | Same VWM (94 V), higher VC (187 V at 2.2 A), SMB package (larger footprint, lower RθJA = 85 °C/W) | Better thermal performance but requires PCB real estate; less suitable for space-constrained automotive modules | Select when higher surge repetition rate or improved thermal dissipation is needed, and board area permits SMB footprint. |
| 1.5KE110CA | Through-hole TO-218 package, same VWM/VC specs, higher PPPM (1500 W), but no AEC-Q101 qualification | Lacks automotive qualification; suited for industrial bench equipment or non-automotive power supplies | Choose only for cost-sensitive, non-automotive applications where manual assembly or higher pulse rating outweighs AEC-Q101 requirement. |
Compared with SMBJ110CA and 1.5KE110CA, the P4SMA110CAHE3_A/I uniquely combines AEC-Q101 qualification, SMA footprint compatibility with high-density layouts, and verified 400 W surge capability - making it the preferred choice for automotive and compact industrial designs requiring production-grade reliability.
Availability
P4SMA110CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance power supplies requiring stable component supply and AEC-Q101 traceability.
Supply support for P4SMA110CAHE3_A/I 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 high-volume, high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robustness under harsh electrical environments and seamless SMT integration.
FAQ
What does the "CA" suffix indicate in P4SMA110CAHE3_A/I?
The "CA" suffix in P4SMA110CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage clamping in both polarities. This eliminates the need to consider anode/cathode orientation during PCB layout and makes it ideal for protecting AC-coupled signals, differential buses like RS-485, or ungrounded power rails. Unlike unidirectional variants (e.g., P4SMA110A), the CA version has no polarity marking and functions identically regardless of voltage polarity applied across its terminals. The P4SMA110CAHE3_A/I maintains identical electrical ratings - including 94.0 V VWM and 152 V VC - in both directions.
Is P4SMA110CAHE3_A/I suitable for automotive applications?
Yes, P4SMA110CAHE3_A/I is explicitly AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation (Document #88367, Rev. 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and stable clamping performance under repetitive 400 W surges make it appropriate for under-hood ECUs, ADAS sensor interfaces, and body control modules. The P4SMA110CAHE3_A/I is designed for direct integration into automotive production lines without additional qualification.
How does the clamping voltage of P4SMA110CAHE3_A/I compare to its breakdown voltage?
The P4SMA110CAHE3_A/I has a breakdown voltage (VBR) range of 105–116 V at 1 mA test current and a maximum clamping voltage (VC) of 152 V at 2.0 A peak pulse current (10/1000 µs waveform). This 36–47 V difference represents the dynamic voltage rise under surge conditions - a key design margin that must be verified against the absolute maximum ratings of downstream ICs. For example, if protecting a 3.3 V microcontroller's I/O via series impedance, the P4SMA110CAHE3_A/I would not be used directly; rather, it is intended for higher-voltage rails (e.g., 24 V or 48 V systems) where 152 V clamping remains safely below system insulation limits. The P4SMA110CAHE3_A/I datasheet confirms this relationship in Table "ELECTRICAL CHARACTERISTICS" on page 2.
What is the thermal resistance of P4SMA110CAHE3_A/I, and how does it affect layout?
P4SMA110CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means that under full 400 W pulse conditions, junction temperature rise can exceed safe limits unless adequate copper area and thermal vias are provided. For continuous operation or high-duty-cycle surges, designers should extend copper beyond minimum pads and use thermal vias to internal ground planes. The P4SMA110CAHE3_A/I package outline drawing (page 5) specifies exact pad dimensions and solder mask clearance to ensure manufacturability and thermal performance.
Does P4SMA110CAHE3_A/I require a heatsink for 400 W pulse handling?
No, P4SMA110CAHE3_A/I does not require an external heatsink for single or low-duty-cycle 400 W pulses (10/1000 µs, ≤0.01% duty cycle), as its rating assumes operation on standard 0.2" × 0.2" copper pads with no added thermal mass. However, for repetitive surges exceeding 1 Hz or sustained power dissipation >3.3 W (its steady-state PD rating), thermal derating per Figure 2 (page 2) becomes critical - junction temperature must stay ≤150 °C. In such cases, increasing copper area, adding thermal vias, or using multiple devices in parallel is recommended instead of attaching a heatsink to the SMA package. The P4SMA110CAHE3_A/I's RθJL of 30 °C/W indicates efficient conduction to PCB leads, making board-level thermal design more effective than mechanical heatsinking.
P4SMA110CAHE3_A/I 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):
- 94V
- Voltage - Breakdown (Min):
- 105V
- Voltage - Clamping (Max) @ Ipp:
- 152V
- Current - Peak Pulse (10/1000µs):
- 2A
- Power - Peak Pulse:
- 300W
- 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)
P4SMA110CAHE3_A/I FAQ
1.How can I place an order for P4SMA110CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA110CAHE3_A/I 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 P4SMA110CAHE3_A/I reliable?
The price and inventory of P4SMA110CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA110CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA110CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA110CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA110CAHE3_A/I?
P4SMA110CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA110CAHE3_A/I 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 P4SMA110CAHE3_A/I?
For technical support, including P4SMA110CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA110CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA110CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA110CAHE3_A/I 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 P4SMA110CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA110CAHE3_A/I?
All P4SMA110CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA110CAHE3_A/I, 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 P4SMA110CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA110CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA110CAHE3_A/I Tags
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