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Vishay General Semiconductor - Diodes Division P4SMA91A-E3/61
- Part No.:
- P4SMA91A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91A-E3/61.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
P4SMA91A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 77.8 V standoff voltage (VWM), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the P4SMA91A-E3/61 datasheet, P4SMA91A-E3/61 pinout, P4SMA91A-E3/61 application, or P4SMA91A-E3/61 equivalent, key selection criteria include its unidirectional polarity, 125 V clamping performance under 3.2 A surge, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and suitability for automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA91A-E3/61 operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 86.5–95.5 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance for consistent clamping behavior across repetitive transients.
It delivers 400 W peak pulse power (10/1000 µs) up to 91 V, derating to 300 W above that threshold, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). The device meets AEC-Q101 qualification (via HE3/HM3 variants) and UL 497B recognition for protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA test current - defines precise avalanche onset window for reliable overvoltage detection |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 125 V at 3.2 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 400 W (≤91 V), 300 W (>91 V) - peak transient energy absorption capability under standard waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inductive load switching events |
| TJ max. | +150 °C - maximum junction temperature enabling operation in high-ambient industrial environments |
| RθJA | 120 °C/W - thermal resistance indicating need for adequate PCB copper area (0.2" × 0.2") for power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to protected line's lower-potential side (e.g., ground or return rail) in unidirectional configuration |
| Cathode | Avalanche conduction terminal / clamping node | Connected to protected line's higher-potential side (e.g., VCC, signal line); band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive switching spikes in industrial power rails |
| 125 V clamping voltage at 3.2 A | Limits transient overvoltage to safe levels for 100 V-rated ICs and MOSFETs without overstressing gate oxides |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) across temperature and lifetime |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| UL 497B recognized (QVGQ2) | Validates compliance for use in telecom and industrial surge protection modules requiring safety certification |
Applications
| Industrial Motor Control | Telecom Power Supply Input |
|---|---|
|
Use Scenario: Protecting gate drivers and microcontrollers from voltage spikes generated by relay coil de-energization or H-bridge shoot-through. IC Role / Device Role: Unidirectional TVS placed between gate driver output and ground to clamp negative flyback transients. Use Value: 125 V clamping prevents gate oxide rupture in 100 V MOSFETs while surviving 40 A surge currents per IEC 61000-4-5. |
Use Scenario: Safeguarding AC/DC converter primary-side rectifiers and control ICs against line surges entering via telecom power feeds. IC Role / Device Role: Primary-side transient suppressor mounted across bulk capacitor input to absorb differential-mode surges. Use Value: 400 W pulse rating handles 1 kV/0.5 kA combination wave surges per ITU-T K.20, maintaining system uptime. |
| Automotive Body Control Module | Consumer Sensor Interface |
|
Use Scenario: Shielding LIN bus transceivers and MCU I/O pins from load dump and jump-start transients in 12 V systems. IC Role / Device Role: Unidirectional TVS on LIN data line referenced to battery ground, leveraging cathode-band polarity marking. Use Value: AEC-Q101 qualified variants (HE3/HM3) ensure reliability; 77.8 V VWM avoids false triggering during 14 V nominal operation. |
Use Scenario: Guarding analog outputs of temperature/humidity sensors against ESD and cable discharge events in smart home hubs. IC Role / Device Role: Low-capacitance TVS on sensor analog output trace, minimizing signal distortion while suppressing ±8 kV contact ESD. Use Value: Fast response time and <1 µA leakage at 77.8 V preserve sensor accuracy and battery life in always-on applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A (Bourns) | Higher 90 V VBR min (85.5 V), same SMA package, 300 W PPPM above 90 V | Slightly lower clamping (121 V @ 3.3 A) but reduced surge margin vs. P4SMA91A-E3/61's 400 W rating ≤91 V | Select SMBJ90A where tighter VBR tolerance is needed and 400 W pulse headroom is not required |
| 1.5SMC91A (ON Semiconductor) | Same 91 V nominal rating, SMC (DO-214AB) package (larger footprint), 1500 W PPPM rating | Higher power handling but incompatible with SMA-reflow profiles and board space-constrained layouts | Choose 1.5SMC91A only when 1500 W surge immunity is mandatory and PCB layout allows larger SMC footprint |
Compared with SMBJ90A and 1.5SMC91A, P4SMA91A-E3/61 offers optimal balance of 400 W pulse capability in compact SMA packaging, precise 86.5–95.5 V VBR window, and RoHS-compliant manufacturability - making it preferred for space-limited industrial and telecom designs requiring certified reliability.
Availability
P4SMA91A-E3/61 is available at Aetrix Electronics and suitable for industrial motor control, telecom power supply input, automotive body control module, and consumer sensor interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA91A-E3/61 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 P4SMA Series is engineered for high-reliability transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where consistent clamping performance and AEC-Q101 qualification matter.
FAQ
What is the breakdown voltage range of the P4SMA91A-E3/61?
The P4SMA91A-E3/61 has a specified breakdown voltage (VBR) range of 86.5 V to 95.5 V at a test current of 1.0 mA. This tight ±5% tolerance ensures predictable avalanche initiation during overvoltage events and supports accurate system-level protection design without excessive voltage margin.
Does the P4SMA91A-E3/61 meet automotive qualification standards?
The base P4SMA91A-E3/61 is commercial-grade and RoHS-compliant. However, Vishay offers AEC-Q101 qualified versions under ordering codes such as P4SMA91AHE3_A (E3 suffix + HE3 automotive grade), which share identical electrical specs but undergo additional stress testing for automotive use cases like body control modules.
What is the maximum clamping voltage of the P4SMA91A-E3/61 under surge conditions?
The P4SMA91A-E3/61 exhibits a maximum clamping voltage (VC) of 125 V at its rated peak pulse current (IPPM) of 3.2 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events.
Can the P4SMA91A-E3/61 be used in bidirectional configurations?
No - the P4SMA91A-E3/61 is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the P4SMA91CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities and no polarity marking.
What package type and mounting requirements apply to the P4SMA91A-E3/61?
The P4SMA91A-E3/61 uses the SMA (DO-214AC) surface-mount package. Optimal thermal performance requires mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and it is rated for MSL Level 1 handling with peak reflow temperature up to 260 °C per J-STD-020.
P4SMA91A-E3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA91A-E3/61 FAQ
1.How can I place an order for P4SMA91A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91A-E3/61 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 P4SMA91A-E3/61 reliable?
The price and inventory of P4SMA91A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA91A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA91A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91A-E3/61?
P4SMA91A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91A-E3/61 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 P4SMA91A-E3/61?
For technical support, including P4SMA91A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91A-E3/61 requirements.
6.How does Aetrix verify that P4SMA91A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA91A-E3/61 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 P4SMA91A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA91A-E3/61?
All P4SMA91A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91A-E3/61, 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 P4SMA91A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA91A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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