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Vishay General Semiconductor - Diodes Division P4SMA9.1CA-E3/61
- Part No.:
- P4SMA9.1CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1CA-E3/61.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,800
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Product details
Overview
P4SMA9.1CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 13.4 V maximum clamping voltage at 50 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability - deployed in sensor interface protection and MOSFET gate drive circuits.
For engineers reviewing the P4SMA9.1CA-E3/61 datasheet, P4SMA9.1CA-E3/61 pinout, P4SMA9.1CA-E3/61 application, or P4SMA9.1CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, low leakage (<50 µA at VWM), thermal resistance (RθJA = 120 °C/W), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA9.1CA-E3/61 operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for protecting sensitive IC inputs against ESD and inductive switching spikes.
Rated for 400 W peak pulse power (10/1000 µs waveform) at TA = 25 °C and derated above 25 °C per Fig. 2, it maintains stable clamping performance across -65 °C to +150 °C junction temperature range. The device meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA test current - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 µA |
| VC @ IPPM | 13.4 V at 50 A peak pulse - clamping voltage seen by protected circuit during worst-case transient |
| PPPM | 400 W (10/1000 µs) - surge energy handling capacity on standard PCB pad layout |
| IPPM | 50 A - peak pulse current supported before clamping voltage exceeds 13.4 V |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, guiding heatsinking requirements for sustained 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. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive polarity) | One terminal of symmetrical avalanche junction; conducts when voltage exceeds +VBR |
| Anode | Transient current exit (negative polarity) | Same physical terminal conducts in reverse direction when voltage exceeds –VBR; no cathode band marking |
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 | Handles high-energy transients from relay coil flyback or ESD events on industrial I/O lines |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes stress on downstream components by limiting overshoot during clamping |
| AEC-Q101 qualified | Validated for automotive applications including body control modules and sensor interfaces |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient surges before they reach ADC front-end or op-amp buffer stages. Use Value: Prevents sensor signal corruption and long-term parametric drift caused by repeated sub-threshold overstress events. |
Use Scenario: Shielding 24 V digital input channels of programmable logic controllers from inductive kickback of solenoid valves and contactor coils. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing 10/1000 µs transients while maintaining <50 µA leakage at 24 V nominal. Use Value: Eliminates false triggering and extends input optocoupler lifetime in factory automation systems. |
| USB Interface ESD Protection | DC Power Rail Surge Suppression |
|
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) in embedded host devices against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to connector to shunt ESD current away from PHY IC. Use Value: Maintains signal integrity with minimal added capacitance (<100 pF typical at 0 V) while meeting Class 4 ESD immunity. |
Use Scenario: Suppressing 400 V/10 µs surges on 12 V DC power rails feeding microcontrollers and communication ICs in telecom equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp on board-level power distribution network upstream of LDO regulators. Use Value: Limits rail excursion to ≤13.4 V during surge, preventing brownout resets and latch-up in downstream silicon. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Higher 600 W peak pulse power; larger SMB (DO-214AA) package; 12.6 V clamping at 43.3 A | Better suited for higher-energy transients but requires larger PCB footprint and different pad layout | Select when system-level surge testing exceeds IEC 61000-4-5 Level 3 (1 kV/2 Ω) and thermal margin is constrained |
| 1.5SMC9.0CA | 1500 W peak pulse power; larger SMC (DO-214AB) package; 14.4 V clamping at 104 A | Targeted at primary-level AC/DC input protection rather than board-level signal line clamping | Choose only for front-end power rail protection where space allows and clamping voltage tolerance permits higher VC |
Compared with SMBJ9.0CA and 1.5SMC9.0CA, the P4SMA9.1CA-E3/61 delivers optimal balance of compact SMA footprint, 400 W surge rating, and 13.4 V clamping for secondary-side signal and low-voltage power rail protection - making it preferred for space-constrained automotive and industrial PCBs where layout reuse and thermal management are critical.
Availability
P4SMA9.1CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, USB port protection, and 12 V DC power rail surge suppression requiring stable component supply across production lifecycles.
Supply support for P4SMA9.1CA-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 automotive qualification.
The P4SMA9.1CA-E3/61 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-leakage transient suppression in harsh electromagnetic environments - targeting automotive, industrial, and communications infrastructure applications.
FAQ
What is the clamping voltage of P4SMA9.1CA-E3/61 at its rated peak pulse current?
The P4SMA9.1CA-E3/61 exhibits a maximum clamping voltage (VC) of 13.4 V at 50 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per JEDEC standards. The P4SMA9.1CA-E3/61 maintains this clamping performance across its full operating temperature range of –65 °C to +150 °C.
Is P4SMA9.1CA-E3/61 suitable for automotive applications?
Yes, the P4SMA9.1CA-E3/61 is AEC-Q101 qualified when ordered with HE3 or HM3 suffixes (e.g., P4SMA9.1CAHE3_A). While the base part number P4SMA9.1CA-E3/61 is RoHS-compliant and commercial-grade, its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJ max - aligns with automotive environmental requirements. For certified automotive use, specify the HE3 variant; the P4SMA9.1CA-E3/61 itself serves as the commercial baseline.
How does the bidirectional configuration of P4SMA9.1CA-E3/61 affect its PCB layout?
The P4SMA9.1CA-E3/61 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Its SMA (DO-214AC) package uses two identical terminals - anode/anode - allowing direct in-line insertion between differential or floating nodes without concern for cathode band alignment. This simplifies automated assembly and reduces risk of misorientation-related field failures compared to unidirectional TVS diodes like P4SMA9.1A.
What is the maximum reverse leakage current for P4SMA9.1CA-E3/61 at its stand-off voltage?
At its rated stand-off voltage (VWM) of 7.78 V and ambient temperature of 25 °C, the P4SMA9.1CA-E3/61 guarantees a maximum reverse leakage current (ID) of 50 µA. This low leakage ensures minimal power loss and signal distortion in high-impedance sensor or communication lines. The P4SMA9.1CA-E3/61 maintains leakage below 100 µA up to 85 °C, supporting reliable operation in thermally demanding enclosures.
Can P4SMA9.1CA-E3/61 be used in place of unidirectional TVS diodes like P4SMA9.1A?
No - the P4SMA9.1CA-E3/61 is strictly bidirectional and lacks polarity marking, whereas P4SMA9.1A is unidirectional with a cathode band. Substituting P4SMA9.1CA-E3/61 for P4SMA9.1A in DC-biased circuits may cause unintended conduction or failure to clamp correctly. The P4SMA9.1CA-E3/61 is intended for AC-coupled, floating, or dual-rail applications where symmetric clamping is required; always verify circuit topology before replacement.
P4SMA9.1CA-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:
- -
- 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-E3/61 FAQ
1.How can I place an order for P4SMA9.1CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1CA-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 P4SMA9.1CA-E3/61 reliable?
The price and inventory of P4SMA9.1CA-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 P4SMA9.1CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA9.1CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1CA-E3/61?
P4SMA9.1CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1CA-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 P4SMA9.1CA-E3/61?
For technical support, including P4SMA9.1CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA9.1CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1CA-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 P4SMA9.1CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA9.1CA-E3/61?
All P4SMA9.1CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1CA-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 P4SMA9.1CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA9.1CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1CA-E3/61 Tags
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