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Vishay General Semiconductor - Diodes Division P4SMA9.1CA-M3/61
- Part No.:
- P4SMA9.1CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1CA-M3/61.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,152
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Product details
Overview
P4SMA9.1CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMA (DO-214AC) package, designed for clamping voltage transients on signal and power 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), 13.4 V maximum clamping voltage (VC) at 29.9 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 automotive electronics.
For engineers reviewing the P4SMA9.1CA-M3/61 datasheet, P4SMA9.1CA-M3/61 pinout, P4SMA9.1CA-M3/61 application, or P4SMA9.1CA-M3/61 equivalent, this device serves as a halogen-free, RoHS-compliant, AEC-Q101-qualified transient protector optimized for bidirectional surge suppression in space-constrained PCB layouts with automated placement requirements.
Technical Context
The P4SMA9.1CA-M3/61 operates as a bidirectional avalanche diode, exhibiting symmetrical clamping behavior in both polarities due to its center-tapped junction structure. Its glass-passivated chip junction ensures stable breakdown characteristics and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients.
It delivers 400 W peak pulse power (derated to 300 W above 91 V) under 10/1000 µs waveform conditions when mounted on 0.2" × 0.2" copper pads, with thermal resistance of RθJA = 120 °C/W and RθJL = 30 °C/W - supporting reliable operation up to TJ = +150 °C in ambient temperatures ranging from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines precise avalanche initiation threshold for bidirectional clamping |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 µA |
| VC @ IPPM | 13.4 V at 29.9 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| IPPM | 29.9 A with 10/1000 µs waveform - peak surge current handling capacity under standard test condition |
| PPPM | 400 W - peak pulse power dissipation capability, critical for IEC 61000-4-5 surge immunity compliance |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive and industrial environments |
| Package | SMA (DO-214AC) - surface-mount outline with 5.0 mm × 5.0 mm pad footprint, MSL Level 1, LF peak 260 °C |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | Shared terminal for symmetrical conduction - no cathode marking; terminals interchangeable for AC transient suppression |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical to Anode in bidirectional mode - forms dual-junction path enabling equal clamping in ± polarity |
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 | Supports robust IEC 61000-4-5 Level 4 (4 kV) surge immunity in compact SMA footprint |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<50 µA at VWM), and long-term reliability |
| AEC-Q101 qualified | Validated for automotive-grade temperature cycling, humidity, and mechanical shock per JESD22 standards |
| Halogen-free & RoHS | M3 suffix confirms compliance with environmental regulations and solderability per J-STD-002/JESD22-B102 |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp transients before reaching precision amplifier or microcontroller ADC input. Use Value: Limits clamped voltage to 13.4 V during 29.9 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog channels in programmable logic controllers against field wiring faults and EFT bursts. IC Role / Device Role / Timing Role: Placed between input terminal and ground to shunt induced surges while maintaining <50 µA leakage at 7.78 V operating voltage. Use Value: Enables uninterrupted operation under repetitive 10/1000 µs transients up to 400 W, meeting IEC 61000-4-4/5 immunity requirements. |
| Consumer Device USB/UART Line Protection | Telecom Power Rail Clamping |
|
Use Scenario: Shielding USB 2.0 D+/D− or UART TX/RX lines in smart home hubs and IoT gateways from ESD (IEC 61000-4-2 ±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed inline with data lines to limit voltage excursion without distorting signal integrity. Use Value: Fast <1 ns response and 13.4 V clamping prevent data corruption and PHY layer damage in 3.3 V logic interfaces. |
Use Scenario: Suppressing switching noise and lightning-induced surges on 12 V/24 V telecom power distribution rails feeding baseband processors and RF modules. IC Role / Device Role / Timing Role: Mounted directly at power entry point to divert >29 A transients away from downstream DC/DC converters and PMICs. Use Value: 400 W pulse rating sustains multiple surge events without degradation, supporting EN 61000-4-5 compliance in outdoor telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Higher 600 W PPPM, larger SMB (DO-214AA) package, VC = 14.4 V at 41.3 A | Better suited for higher-energy surges but requires larger board area and different pad layout | Select when system-level surge testing exceeds 400 W or when legacy SMB footprint is fixed |
| 1.5SMC9.0CA | 1500 W PPPM, SMC (DO-214AB) package, VC = 14.4 V at 104 A, higher leakage (100 µA) | Targeted at primary-level AC/DC input protection rather than signal-line secondary protection | Choose for front-end power rail clamping where space allows and energy levels exceed 400 W |
Compared with SMBJ9.0CA and 1.5SMC9.0CA, the P4SMA9.1CA-M3/61 offers optimal balance of 400 W surge handling, SMA footprint compatibility, and low-leakage performance for signal-level protection - making it preferred for space-constrained, high-density PCBs in automotive and industrial edge devices.
Availability
P4SMA9.1CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, consumer USB/UART line protection, and telecom power rail clamping requiring stable component supply across production lifecycles.
Supply support for P4SMA9.1CA-M3/61 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA9.1CA-M3/61 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications systems where compact size, bidirectional symmetry, and AEC-Q101 qualification are mandatory.
FAQ
What is the breakdown voltage tolerance for P4SMA9.1CA-M3/61?
The P4SMA9.1CA-M3/61 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 window ensures consistent clamping behavior across production lots and supports predictable circuit protection design in safety-critical applications.
Is P4SMA9.1CA-M3/61 suitable for automotive applications?
Yes, the P4SMA9.1CA-M3/61 is AEC-Q101 qualified and carries the M3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive environments. Its –65 °C to +150 °C operating temperature range, glass-passivated junction, and robust 400 W surge capability make it appropriate for engine control units, ADAS sensor modules, and infotainment system interfaces.
How does the bidirectional nature of P4SMA9.1CA-M3/61 affect its PCB layout?
The P4SMA9.1CA-M3/61 has no polarity marking and functions identically in both directions, eliminating orientation constraints during automated placement. Unlike unidirectional TVS diodes, it can be placed across AC-coupled lines or floating differential pairs without regard to anode/cathode alignment - simplifying layout and reducing assembly errors in high-volume manufacturing.
What is the maximum clamping voltage of P4SMA9.1CA-M3/61 under surge conditions?
The P4SMA9.1CA-M3/61 exhibits a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 29.9 A using the standard 10/1000 µs waveform. This value is measured at the device terminals and represents the upper voltage limit imposed on protected circuitry during transient events, ensuring compatibility with 5 V and 3.3 V logic interfaces.
Does P4SMA9.1CA-M3/61 require heatsinking for standard operation?
No external heatsink is required for P4SMA9.1CA-M3/61 under typical surge duty cycles (0.01 %), as its thermal resistance RθJA = 120 °C/W is sufficient when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. Continuous power dissipation is limited to 3.3 W, but transient events are short-duration and self-limiting - thermal design focuses on PCB copper area, not added heatsinks.
P4SMA9.1CA-M3/61 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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA9.1CA-M3/61 FAQ
1.How can I place an order for P4SMA9.1CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1CA-M3/61 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 P4SMA9.1CA-M3/61 reliable?
The price and inventory of P4SMA9.1CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA9.1CA-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA9.1CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1CA-M3/61?
P4SMA9.1CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1CA-M3/61 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 P4SMA9.1CA-M3/61?
For technical support, including P4SMA9.1CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1CA-M3/61 requirements.
6.How does Aetrix verify that P4SMA9.1CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1CA-M3/61 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 P4SMA9.1CA-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA9.1CA-M3/61?
All P4SMA9.1CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1CA-M3/61, 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 P4SMA9.1CA-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA9.1CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1CA-M3/61 Tags
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Diodes Incorporated
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