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Vishay General Semiconductor - Diodes Division P4SMA91CA-E3/5A
- Part No.:
- P4SMA91CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91CA-E3/5A.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,687
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Product details
Overview
P4SMA91CA-E3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting MOSFETs, sensor interfaces, and telecom line drivers against ESD and inductive switching surges.
For engineers reviewing the P4SMA91CA-E3/5A datasheet, P4SMA91CA-E3/5A pinout, P4SMA91CA-E3/5A application, or P4SMA91CA-E3/5A equivalent, this device is evaluated for bidirectional surge protection in automotive-grade (AEC-Q101 optional), industrial, and telecom systems where low-profile SMA packaging, fast response time, and stable clamping under repetitive transients are required.
Technical Context
The P4SMA91CA-E3/5A operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics due to its bidirectional construction. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping performance across temperature (–65 °C to +150 °C).
It delivers 400 W peak pulse power (derated to 300 W above 91 V per note 1), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W, supporting reliable operation on standard 0.2" × 0.2" copper pads. The device meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 77.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA, setting safe operating margin below VBR |
| VC @ IPPM | 125 V at 3.2 A - peak clamped voltage during 10/1000 µs transient, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capability, derated to 300 W above 91 V per datasheet note |
| IPPM | 3.2 A - maximum non-repetitive peak pulse current supported with 10/1000 µs waveform |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount package with 0.208" × 0.157" footprint, compatible with automated placement and reflow |
Pinout & Package
SMA (DO-214AC) package: two-terminal, symmetrical bidirectional device with no polarity marking; terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | Both terminals function identically - no cathode band; enables placement without orientation check in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 24 V industrial buses |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns |
| AEC-Q101 qualified option (HE3/HM3 suffix) | Validated for automotive powertrain and body electronics requiring extended reliability screening |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity exposure |
Applications
| Industrial Sensor Interface | Automotive CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in factory automation PLC modules exposed to relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal pair (e.g., 4–20 mA loop) to shunt transients before reaching ADC or op-amp input. Use Value: Limits induced voltage spikes to ≤125 V, preventing latch-up or damage to 3.3 V/5 V signal conditioning circuitry while maintaining <1 µA leakage at 24 V nominal. |
Use Scenario: Surge suppression on CAN_H/CAN_L differential pair in automotive body control modules subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed across bus lines to clamp common-mode transients without distorting 1 Mbps CAN signaling. Use Value: Clamps 10/1000 µs surges to 125 V while adding <1 pF junction capacitance (per fig. 4), preserving signal integrity and meeting ISO 11898-2 EMC requirements. |
| Telecom Line Driver Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers in PoE-powered network switches against lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to divert >1 kV transients before reaching isolation barrier or transceiver IC. Use Value: Responds in <1 ns to limit transient rise time, with 400 W rating sustaining multiple 10/1000 µs events without degradation per JEDEC JESD22-A114. |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for smart home hubs, guarding against transformer regulation failure or rectifier short. IC Role / Device Role / Timing Role: Bidirectional clamp across DC output rails (e.g., 12 V ±10%) to prevent overvoltage damage to downstream USB-PD controllers or SoCs. Use Value: Maintains 77.8 V stand-off with <1 µA leakage at room temperature, ensuring no standby power loss while triggering reliably at 86.5 V breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Higher 600 W PPPM, larger SMB (DO-214AA) package (0.236" × 0.157"), VC = 129 V @ 4.8 A | Better suited for higher-energy surges but requires larger PCB area and has higher thermal resistance (RθJA = 140 °C/W) | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger footprint. |
| 1.5KE91CA | Through-hole DO-201 package, 1500 W PPPM, VC = 127 V @ 11.8 A, higher IFSM (100 A) | Designed for primary-side AC input protection; not SMT-compatible and incompatible with automated assembly | Choose only for legacy through-hole designs or high-energy front-end protection where reworkability outweighs density constraints. |
Compared with SMBJ90CA and 1.5KE91CA, the P4SMA91CA-E3/5A offers optimal balance of 400 W surge capacity, ultra-compact SMA footprint, and AEC-Q101-ready variants - making it preferred for space-constrained, high-volume SMT applications in automotive and industrial edge nodes where layout efficiency and assembly scalability are critical.
Availability
P4SMA91CA-E3/5A is available at Aetrix Electronics and suitable for industrial sensor interface, automotive CAN bus protection, and telecom line driver applications requiring stable component supply, RoHS-compliant materials, and traceable lot-level documentation.
Supply support for P4SMA91CA-E3/5A 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 application-specific optimization.
The P4SMA91CA-E3/5A belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-speed, low-leakage transient suppression in space-constrained SMT designs across automotive, industrial, and communications infrastructure.
FAQ
What is the breakdown voltage tolerance for P4SMA91CA-E3/5A?
The P4SMA91CA-E3/5A has a specified breakdown voltage range of 86.5 V to 95.5 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 91 V rating. This tight tolerance ensures predictable clamping behavior across production lots and supports reliable design margining in safety-critical protection circuits.
Is P4SMA91CA-E3/5A suitable for automotive applications?
Yes - while the base P4SMA91CA-E3/5A is commercial-grade, Vishay offers AEC-Q101-qualified variants under HE3 and HM3 suffixes (e.g., P4SMA91CAHE3_A). These undergo stress testing per automotive reliability standards and are approved for use in body electronics, infotainment, and ADAS subsystems where enhanced lifetime and failure mode validation are required.
What is the maximum clamping voltage of P4SMA91CA-E3/5A under surge conditions?
The P4SMA91CA-E3/5A exhibits a maximum clamping voltage (VC) of 125 V when subjected to its rated peak pulse current of 3.2 A with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events.
Does P4SMA91CA-E3/5A require orientation during PCB placement?
No - the P4SMA91CA-E3/5A is a bidirectional TVS diode with symmetrical terminal construction and no polarity marking. Both leads serve identically as anode/cathode depending on transient polarity, eliminating orientation constraints and simplifying automated placement and inspection processes.
What is the thermal resistance of P4SMA91CA-E3/5A, and how does it affect power dissipation?
The P4SMA91CA-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. When mounted on minimum recommended 0.2" × 0.2" copper pads, this allows continuous power dissipation up to 3.3 W at TA = 50 °C, supporting reliable operation in thermally constrained enclosures without forced cooling.
P4SMA91CA-E3/5A 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA91CA-E3/5A FAQ
1.How can I place an order for P4SMA91CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91CA-E3/5A 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 P4SMA91CA-E3/5A reliable?
The price and inventory of P4SMA91CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA91CA-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA91CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91CA-E3/5A?
P4SMA91CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91CA-E3/5A 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 P4SMA91CA-E3/5A?
For technical support, including P4SMA91CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91CA-E3/5A requirements.
6.How does Aetrix verify that P4SMA91CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA91CA-E3/5A 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 P4SMA91CA-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA91CA-E3/5A?
All P4SMA91CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91CA-E3/5A, 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 P4SMA91CA-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA91CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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