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Vishay General Semiconductor - Diodes Division P4SMA91CAHE3_A/H
- Part No.:
- P4SMA91CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91CAHE3_A/H.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,040
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Product details
Overview
P4SMA91CAHE3_A/H 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 91 V breakdown voltage (VBR = 86.5–95.5 V at 1 mA), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive applications.
For engineers reviewing the P4SMA91CAHE3_A/H datasheet, P4SMA91CAHE3_A/H pinout, P4SMA91CAHE3_A/H application, or P4SMA91CAHE3_A/H equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom power rails where bidirectional clamping, low leakage (<1 µA at 77.8 V), and MSL Level 1 reflow compatibility are critical.
Technical Context
The P4SMA91CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced surges.
Rated for 150 °C maximum junction temperature and derated above 25 °C ambient, it delivers 400 W peak pulse power up to 91 V and 300 W above - validated under JEDEC JESD22-A114F ESD testing and IEC 61000-4-5 surge conditions. The SMA (DO-214AC) package supports automated placement and meets UL 94 V-0 flammability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1 mA - defines precise clamping onset threshold for bidirectional overvoltage events |
| VWM | 77.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 125 V at 3.2 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W (≤91 V), 300 W (>91 V) - peak transient energy absorption capability per JEDEC standard |
| IPPM | 3.2 A - peak pulse current supported with defined clamping performance |
| TJ max | 150 °C - enables operation in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD |
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 leads, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for both polarities; no cathode band marking |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode in CA devices; terminals interchangeable in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) on properly routed PCB traces |
| AEC-Q101 qualification | Validated for automotive powertrain, body electronics, and ADAS sensor modules requiring zero-defect reliability |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without preconditioning or special handling |
| Low leakage & tight VBR tolerance | <1 µA at 77.8 V and ±5% VBR ensures minimal standby power loss and predictable trip point |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry to clamp ±100 V spikes before reaching signal conditioning circuitry. Use Value: Prevents latch-up or damage to 3.3 V/5 V ADC inputs and transceivers while maintaining <1 µA leakage at 77.8 V operating bias. |
Use Scenario: Safeguarding PLC digital input channels exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS across input terminals to shunt 400 W transients within nanoseconds. Use Value: Enables reliable 24 V DC input operation with 125 V clamping ceiling, reducing need for additional filtering or isolation. |
| Telecom Power Rail Protection | Consumer USB/Display Port ESD Guard |
|
Use Scenario: Secondary surge suppression on +12 V or +48 V telecom power distribution boards upstream of DC-DC converters. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs surges induced by nearby lightning strikes or grid switching. Use Value: Delivers 300–400 W pulse handling with 150 °C thermal rating, supporting long-term deployment in outdoor cabinets. |
Use Scenario: Board-level ESD protection for HDMI, USB 2.0, or DisplayPort signal pairs in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed adjacent to connectors to meet IEC 61000-4-2 ±15 kV contact discharge. Use Value: Provides sub-125 V clamping with negligible signal distortion due to symmetric structure and DO-214AC footprint compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Higher 90 V VWM, 135 V VC @ 3.1 A, SMB package (larger footprint, 5.3 mm × 4.6 mm) | Lower clamping ratio but requires more PCB area; better thermal dissipation for sustained surge duty | Select when higher continuous power derating or legacy SMB layout reuse is required |
| 1.5KE91CA | Through-hole TO-218 package, same VBR/VC, 1500 W PPPM (10/1000 µs) | Designed for high-energy industrial mains protection; incompatible with SMT assembly | Choose only for retrofit or high-surge legacy systems where board space and assembly method permit through-hole mounting |
Compared with SMBJ90CA and 1.5KE91CA, the P4SMA91CAHE3_A/H offers optimal balance of compact DO-214AC footprint, AEC-Q101 qualification, and precise 91 V clamping for modern automotive and industrial SMT designs - without sacrificing surge margin or thermal robustness.
Availability
P4SMA91CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O safeguarding, and telecom power rail stabilization requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA91CAHE3_A/H 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 is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 validation, and surface-mount scalability across 6.8 V to 540 V standoff ranges.
FAQ
What is the exact breakdown voltage range for P4SMA91CAHE3_A/H?
The P4SMA91CAHE3_A/H has a guaranteed breakdown voltage (VBR) range of 86.5 V to 95.5 V at 1 mA test current, measured per ANSI/IEEE C62.35. This ±5% tolerance ensures predictable clamping onset for bidirectional transients and is verified during 100% production testing. The value applies identically to both terminals due to its symmetrical construction.
Is P4SMA91CAHE3_A/H suitable for automotive applications?
Yes, P4SMA91CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and revision code "_A/H". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under harsh conditions is mandatory.
What does the "CA" suffix indicate in P4SMA91CAHE3_A/H?
The "CA" suffix in P4SMA91CAHE3_A/H denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both directions, with no anode/cathode distinction. Unlike unidirectional "A" variants, CA devices have no polarity marking and are used where AC signals, floating grounds, or dual-polarity surges require symmetrical protection without external circuit redesign.
What is the maximum clamping voltage of P4SMA91CAHE3_A/H under surge conditions?
The P4SMA91CAHE3_A/H exhibits a maximum clamping voltage (VC) of 125 V at 3.2 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured across the device terminals during surge events and defines the upper voltage limit imposed on protected circuits - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does P4SMA91CAHE3_A/H require special PCB layout considerations?
No special layout is required beyond Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal, as specified in the datasheet. The SMA (DO-214AC) package supports standard reflow profiles (MSL Level 1, 260 °C peak), and bidirectional symmetry eliminates orientation constraints. Keep traces short and direct between P4SMA91CAHE3_A/H and protected nodes to minimize inductance and preserve clamping speed.
P4SMA91CAHE3_A/H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA91CAHE3_A/H FAQ
1.How can I place an order for P4SMA91CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91CAHE3_A/H 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 P4SMA91CAHE3_A/H reliable?
The price and inventory of P4SMA91CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA91CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA91CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91CAHE3_A/H?
P4SMA91CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91CAHE3_A/H 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 P4SMA91CAHE3_A/H?
For technical support, including P4SMA91CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA91CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA91CAHE3_A/H 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 P4SMA91CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA91CAHE3_A/H?
All P4SMA91CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91CAHE3_A/H, 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 P4SMA91CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA91CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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