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Vishay General Semiconductor - Diodes Division P4SMA91CAHE3/5A
- Part No.:
- P4SMA91CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91CAHE3/5A.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,893
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Product details
Overview
P4SMA91CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 91 V breakdown voltage (VBR), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting automotive-grade sensor interfaces and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the P4SMA91CAHE3/5A datasheet, P4SMA91CAHE3/5A pinout, P4SMA91CAHE3/5A application, or P4SMA91CAHE3/5A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMA (DO-214AC) package dimensions, bidirectional clamping behavior, and real-world protection use cases - all confirmed from Vishay's official 88367 document (Rev. 09-Jan-2024).
Technical Context
The P4SMA91CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its 91 V breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%), low leakage (<1 µA at 77.8 V), and fast response time (<1 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1, it supports lead-free reflow up to 260 °C. The device delivers 400 W peak pulse power below 91 V and derates to 300 W above 91 V per Vishay's Fig. 2, with thermal resistance RθJA = 120 °C/W on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 86.5–95.5 V at 1 mA test current - defines precise clamping onset for bidirectional surge events |
| Stand-off Voltage VWM | 77.8 V maximum - ensures no conduction during normal 72 V DC bus operation |
| Clamping Voltage VC | 125 V at 3.2 A IPPM (10/1000 µs) - limits transient voltage seen by downstream ICs |
| Peak Pulse Power PPPM | 400 W (≤91 V), 300 W (>91 V) - sustains high-energy transients without failure |
| Leakage Current ID | <1 µA at VWM - prevents loading of low-power sensor bias networks |
| Operating Temperature | −65 °C to +150 °C - validated for under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during reverse-biased surges; connects to protected line |
| Cathode | Transient current entry (positive half-cycle) | Conducts during forward-biased surges; connects to protected line |
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) | Handles high-energy transients from relay coil flyback or motor commutation in industrial controls |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including body control modules and ADAS sensor interfaces |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture sensitivity handling |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load dump and ESD in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed between bus line and ground to clamp ±100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to transceivers rated for only ±40 V absolute maximum, leveraging 125 V clamping at 3.2 A. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from solenoid de-energization spikes before reaching input conditioning circuitry. Use Value: Maintains system uptime by eliminating false triggering or component failure caused by >100 V spikes on 24 V rails. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY interface pins against lightning-induced surges in outdoor network equipment. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed on differential pairs to limit common-mode overvoltage without distorting signal integrity. Use Value: Achieves IEC 61000-4-5 Level 3 (1 kV) immunity while adding <1 pF parasitic capacitance at 1 MHz. |
Use Scenario: Suppressing commutation noise on BLDC motor gate drive signals in smart home appliances. IC Role / Device Role / Timing Role: Localized TVS at MOSFET source/drain nodes to absorb fast-rising dV/dt spikes generated during PWM switching. Use Value: Reduces electromagnetic emissions and prevents false triggering of overvoltage protection in motor driver ICs. |
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 VBR min (85.5–94.5 V), same SMA package, 600 W PPPM rating | Preferred where higher surge margin is required (e.g., 48 V telecom systems) | Select SMBJ90CA when 600 W pulse handling is needed and board layout allows same footprint |
| 1.5KE91CA | Through-hole DO-201 package, 91 V VBR, 1500 W PPPM, higher thermal mass | Suitable for prototyping or high-reliability legacy designs requiring axial leads | Choose 1.5KE91CA only if through-hole assembly is mandated or higher single-pulse energy absorption is critical |
Compared with P4SMA91CAHE3/5A, SMBJ90CA offers greater surge robustness in the same surface-mount form factor, while 1.5KE91CA trades PCB space efficiency for superior single-event energy handling - making P4SMA91CAHE3/5A optimal for AEC-Q101-compliant, space-constrained automotive and industrial SMT designs.
Availability
P4SMA91CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor drives requiring stable component supply, AEC-Q101 compliance, and RoHS-conformant sourcing.
Supply support for P4SMA91CAHE3/5A 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P4SMA series was engineered specifically for high-volume, surface-mount transient suppression in automotive and industrial environments - combining AEC-Q101 qualification, low-profile SMA packaging, and tightly controlled clamping performance.
FAQ
What does the "CA" suffix mean in P4SMA91CAHE3/5A?
The "CA" suffix in P4SMA91CAHE3/5A indicates a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., P4SMA91A), it has no cathode band marking and is used where AC-coupled or floating signal lines require symmetrical overvoltage protection without polarity constraints. This is confirmed in Vishay's P4SMA datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P4SMA91CAHE3/5A suitable for automotive applications?
Yes, P4SMA91CAHE3/5A is AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering information table and mechanical data section. It meets stress test requirements for automotive electronics including temperature cycling, humidity bias, and accelerated life testing - making it appropriate for engine control units, body electronics, and ADAS sensor protection circuits.
What is the maximum clamping voltage of P4SMA91CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of P4SMA91CAHE3/5A is 125 V at a peak pulse current (IPPM) of 3.2 A with a 10/1000 µs waveform, as specified in the Electrical Characteristics table on page 2 of Vishay document 88367. This value represents the upper voltage limit imposed on protected circuitry during standardized surge events.
How does the "/5A" in P4SMA91CAHE3/5A affect packaging and ordering?
"/5A" denotes the tape-and-reel delivery format: 13-inch diameter reel containing 7500 units, per Vishay's Ordering Information table. It does not affect electrical or thermal specifications. The base part P4SMA91CAHE3 is identical in function and qualification; only packaging and quantity differ from alternatives like /61 (7-inch reel, 1800 units).
Can P4SMA91CAHE3/5A replace P4SMA91A in a design?
No - P4SMA91CAHE3/5A is bidirectional while P4SMA91A is unidirectional, so direct replacement requires circuit review. Unidirectional types have a cathode band and conduct only in reverse bias; substituting a bidirectional device may cause unintended conduction in DC-biased lines. Layout changes and functional validation are necessary before interchange, as confirmed by Vishay's distinction in the "Polarity" section.
P4SMA91CAHE3/5A 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):
- 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)
P4SMA91CAHE3/5A FAQ
1.How can I place an order for P4SMA91CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91CAHE3/5A 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 P4SMA91CAHE3/5A reliable?
The price and inventory of P4SMA91CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA91CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA91CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91CAHE3/5A?
P4SMA91CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91CAHE3/5A 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 P4SMA91CAHE3/5A?
For technical support, including P4SMA91CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA91CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA91CAHE3/5A 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 P4SMA91CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA91CAHE3/5A?
All P4SMA91CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91CAHE3/5A, 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 P4SMA91CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA91CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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