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Vishay General Semiconductor - Diodes Division P4SMA9.1A-E3/61
- Part No.:
- P4SMA9.1A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1A-E3/61.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,847
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Product details
Overview
P4SMA9.1A-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 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), and 13.4 V maximum clamping voltage (VC) at 29.9 A peak pulse current (IPPM), with 400 W peak pulse power rating per 10/1000 µs waveform.
For engineers reviewing the P4SMA9.1A-E3/61 datasheet, P4SMA9.1A-E3/61 pinout, P4SMA9.1A-E3/61 application, or P4SMA9.1A-E3/61 equivalent, this device serves as a robust, RoHS-compliant transient protection solution for low-voltage DC rails and sensor interfaces in automotive, industrial, and telecom systems where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.47), and AEC-Q101 qualification readiness are critical.
Technical Context
The P4SMA9.1A-E3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (50 µA max at VWM), while thermal resistance RθJA = 120 °C/W supports operation up to TJ = 150 °C under defined pad layout conditions.
It delivers 400 W peak pulse power (10/1000 µs) with 29.9 A IPPM, clamping to 13.4 V - enabling protection of 5 V and 3.3 V logic circuits against ESD (IEC 61000-4-2) and inductive switching surges. The SMA package's low profile and matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA - defines precise clamping onset window for reliable overvoltage detection |
| VWM | 7.78 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 13.4 V at 29.9 A - clamped voltage seen by protected IC during worst-case surge, limiting stress on downstream 5 V logic |
| IPPM | 29.9 A - peak surge current capability under standard 10/1000 µs waveform, supporting high-energy transient suppression |
| PPPM | 400 W - peak pulse power handling capacity, derated above 25 °C per Fig. 2 for thermal design margin |
| Leakage ID | 50 µA max at VWM - ensures minimal standby power loss and signal integrity on low-current sensor lines |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.0 mm × 5.0 mm copper pad requirement for thermal performance |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded plastic case with cathode band marking; terminals are matte tin-plated leads compatible with lead-free reflow (J-STD-020 MSL Level 1, peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 5 V supply or data line); band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive kickback in automotive power modules |
| Clamping ratio VC/VBR ≈ 1.47 | Minimizes overvoltage overshoot during transient events, preserving margin for 5 V logic ICs with 16 V absolute max ratings |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and low parametric drift across temperature and lifetime |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without pre-baking or special handling constraints |
| AEC-Q101 qualification option (HE3 suffix) | Validates reliability for automotive applications including engine control units and body electronics |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V microcontroller supply rails in vehicle infotainment modules from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping transients within nanoseconds. Use Value: Limits voltage to ≤13.4 V during 29.9 A surges, preventing latch-up or permanent damage to MCU power pins. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLCs from EFT and ESD coupling. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point, shunting fast transients before reaching ADC input. Use Value: Low 50 µA leakage avoids signal offset errors; fast response preserves integrity of mV-level sensor signals. |
| Telecom Data Line Surge Suppression | Consumer USB Port Overvoltage Protection |
|
Use Scenario: Safeguarding RS-485 transceivers in base station backhaul equipment exposed to induced lightning surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS on each differential line (A/B), referenced to local ground plane. Use Value: 13.4 V clamping prevents transceiver damage while maintaining common-mode noise rejection up to 12 kV ESD. |
Use Scenario: Adding secondary overvoltage protection on VBUS line of USB 2.0 ports in smart home hubs. IC Role / Device Role / Timing Role: Standoff voltage (7.78 V) allows normal 5 V operation; clamps >9.1 V transients to protect USB controller. Use Value: Meets IEC 61000-4-5 Level 3 (1 kV line-earth) with no impact on USB enumeration or power delivery compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Higher IPPM (33.3 A), same VC (13.4 V), SMB package (larger footprint, better thermal dissipation) | Better suited for higher-energy surges requiring >400 W pulse handling or improved thermal margin | Select SMBJ9.0A when board space permits larger package and higher surge immunity is required |
| 1.5SMC9.0A | Same VBR/VC, but SMC package (DO-214AB), 1500 W peak power rating, higher IPPM (111 A) | Designed for heavy-duty industrial environments with repetitive high-energy transients | Choose 1.5SMC9.0A for applications demanding >1 kW surge capability and higher reliability under cyclic stress |
Compared with P4SMA9.1A-E3/61, SMBJ9.0A offers enhanced thermal performance in a slightly larger footprint, while 1.5SMC9.0A provides threefold higher peak power for mission-critical infrastructure - making P4SMA9.1A-E3/61 optimal for space-constrained, cost-sensitive consumer and automotive ECUs where 400 W suffices.
Availability
P4SMA9.1A-E3/61 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, and telecom interface modules requiring stable component supply, RoHS compliance, and rapid fulfillment of production volumes.
Supply support for P4SMA9.1A-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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series targets compact, high-reliability transient suppression in space-constrained applications - engineered for fast response, stable clamping, and seamless integration into automated SMT lines across automotive, industrial, and communications markets.
FAQ
What is the breakdown voltage tolerance of P4SMA9.1A-E3/61?
The P4SMA9.1A-E3/61 has a specified breakdown voltage range of 8.65 V to 9.55 V at test current IT = 1.0 mA, corresponding to ±5% tolerance around the nominal 9.1 V rating. This tight VBR distribution ensures consistent clamping behavior across production lots and supports predictable circuit protection design without over-engineering margins.
Is P4SMA9.1A-E3/61 suitable for automotive applications?
Yes - while the base P4SMA9.1A-E3/61 is commercial-grade, it shares identical electrical and mechanical specifications with the AEC-Q101 qualified variant P4SMA9.1AHE3_A. Engineers may use P4SMA9.1A-E3/61 in non-safety-critical automotive subsystems (e.g., infotainment, lighting controls), and upgrade to HE3-suffixed versions for ASIL-compliant designs requiring formal qualification evidence.
What is the maximum clamping voltage of P4SMA9.1A-E3/61 under surge conditions?
The P4SMA9.1A-E3/61 exhibits a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 29.9 A (10/1000 µs waveform). This value is guaranteed across temperature and represents the highest voltage imposed on the protected circuit during worst-case transient events, ensuring compatibility with 5 V logic families having 16 V absolute maximum ratings.
Does P4SMA9.1A-E3/61 require heatsinking for standard operation?
No external heatsink is required for P4SMA9.1A-E3/61 under typical surge conditions, provided the PCB uses the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its RθJA = 120 °C/W and 3.3 W steady-state power dissipation rating allow safe operation up to +150 °C junction temperature with proper layout - eliminating need for additional thermal management in most applications.
How does the leakage current of P4SMA9.1A-E3/61 affect low-power sensor circuits?
The P4SMA9.1A-E3/61 specifies maximum reverse leakage current (ID) of 50 µA at its 7.78 V stand-off voltage - sufficiently low to avoid measurable error in µA-range sensor bias networks or battery-powered IoT nodes. This leakage remains stable over temperature and time due to glass-passivated junction construction, preserving accuracy in precision analog front-ends without requiring compensation.
P4SMA9.1A-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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 29.9A
- 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)
P4SMA9.1A-E3/61 FAQ
1.How can I place an order for P4SMA9.1A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1A-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 P4SMA9.1A-E3/61 reliable?
The price and inventory of P4SMA9.1A-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 P4SMA9.1A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA9.1A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1A-E3/61?
P4SMA9.1A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1A-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 P4SMA9.1A-E3/61?
For technical support, including P4SMA9.1A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1A-E3/61 requirements.
6.How does Aetrix verify that P4SMA9.1A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1A-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 P4SMA9.1A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA9.1A-E3/61?
All P4SMA9.1A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1A-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 P4SMA9.1A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA9.1A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1A-E3/61 Tags
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