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Vishay General Semiconductor - Diodes Division P4SMA30CA-E3/61
- Part No.:
- P4SMA30CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CA-E3/61.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA30CA-E3/61 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 and power lines. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 9.7 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA30CA-E3/61 datasheet, P4SMA30CA-E3/61 pinout, P4SMA30CA-E3/61 application, or P4SMA30CA-E3/61 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMA (DO-214AC) package details, AEC-Q101 qualification status, and real-world protection use cases without generic assumptions.
Technical Context
The P4SMA30CA-E3/61 operates as a symmetrical bidirectional TVS, delivering identical clamping performance in both polarities - critical for AC-coupled or floating signal lines. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables fast response to ESD and lightning-induced transients.
Rated for 150 °C maximum junction temperature and compliant with MSL Level 1 (260 °C reflow peak), it supports automated SMT assembly. The device sustains repetitive 400 W pulses at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2 in the datasheet - enabling thermal-aware layout in compact PCB designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (Breakdown Voltage) | 33.3 V min at 1.0 mA - Voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating range. |
| VC (Clamping Voltage) | 41.4 V max at 9.7 A IPPM - Peak voltage seen by protected circuit during transient; limits stress on downstream 3.3 V/5 V logic or gate drivers. |
| PPPM (Peak Pulse Power) | 400 W with 10/1000 µs waveform - Energy-handling capability for IEC 61000-4-5 Level 3 surges (1 kV/42 Ω). |
| ID (Reverse Leakage) | ≤1.0 µA at 30 V - Negligible standby current; avoids loading of high-impedance sensor or reference lines. |
| TJ max | 150 °C - Enables operation in under-hood automotive or industrial enclosures without derating below full power. |
| Package | SMA (DO-214AC) - Standardized 2-pin SMD outline with 5.0 mm × 5.0 mm copper pad requirement for thermal dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges; forms one half of symmetrical clamping path. |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges; completes bidirectional protection path with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware placement in AC or differential signal paths. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Combination Wave (1.2/50 µs voltage, 8/20 µs current) surges up to 400 W without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| Glass passivated junction | Ensures stable leakage and breakdown over lifetime; prevents parametric shift due to moisture or contamination in harsh environments. |
| MSL Level 1 rating | Compatible with standard Pb-free reflow profiles up to 260 °C peak - supports high-yield automated assembly without baking. |
Applications
| Industrial Sensor Interface Protection | Automotive CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation cabinets exposed to relay switching noise and ground bounce. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal and return lines to clamp ±1 kV transients before they reach ADC input or op-amp buffer. Use Value: Limits induced voltage to ≤41.4 V, preventing latch-up or permanent damage to 3.3 V or 5 V signal conditioning ICs. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle body control modules against load dump and jump-start surges. IC Role / Device Role / Timing Role: Paired P4SMA30CA-E3/61 devices (one per line) suppress common-mode transients while preserving signal integrity up to 1 Mbps. Use Value: Maintains bus functionality during 400 W transients; AEC-Q101 qualification ensures reliability over 15-year vehicle service life. |
| USB 2.0 Data Line ESD Protection | DC Power Rail Surge Suppression |
Use Scenario: Adding secondary-level ESD protection on USB D+ and D− lines downstream of integrated port protection, in embedded host controllers. IC Role / Device Role / Timing Role: Fast-response TVS shunting >8 kV HBM ESD events away from USB transceiver PHY pins. Use Value: Clamps ESD pulses within <1 ns, keeping voltage below 41.4 V - well below the 6 V absolute maximum rating of most USB PHYs. |
Use Scenario: Protecting 24 V DC input rails of programmable logic controllers (PLCs) against inductive kickback from solenoid valves and contactor coils. IC Role / Device Role / Timing Role: Mounted between rail and ground to absorb 400 W surges generated by 100 mJ inductive energy releases. Use Value: Prevents overvoltage shutdown or MOSFET gate oxide rupture by limiting rail excursion to ≤41.4 V during 10/1000 µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Higher 33 V VWM, 36.7 V VBR min, 53.3 V VC at 7.5 A - larger SMB package (DO-214AA), 600 W PPPM rating. | Better suited for 28 V systems requiring higher standoff; less space-constrained layouts. | Select when board area allows SMB footprint and system requires ≥33 V VWM margin. |
| 1.5SMC33CA | Same 33 V VWM but 1500 W PPPM, DO-214AB package - significantly larger, higher thermal mass, lower RθJA. | Targeted at high-energy industrial surge environments (IEC 61000-4-5 Level 4); not suitable for dense SMT layouts. | Choose only when 1500 W surge immunity is mandatory and PCB real estate permits TO-277 outline. |
Compared with P4SMA30CA-E3/61, SMBJ33CA offers higher standoff and power but requires more board area, while 1.5SMC33CA delivers triple the pulse power at the cost of footprint and assembly compatibility - making P4SMA30CA-E3/61 optimal for space-constrained, AEC-Q101-compliant 24 V designs.
Availability
P4SMA30CA-E3/61 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus protection, USB 2.0 ESD hardening, and 24 V DC power rail surge suppression requiring stable component supply, RoHS compliance, and AEC-Q101 validation.
Supply support for P4SMA30CA-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 cost-sensitive, high-volume transient protection needs in consumer, industrial, and automotive electronics - delivering standardized TVS performance in compact SMA packages with AEC-Q101 options.
FAQ
What is the clamping voltage of P4SMA30CA-E3/61 at its rated peak pulse current?
The P4SMA30CA-E3/61 has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per standard test methods in the Vishay datasheet (Document Number: 88367) and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring compatibility with 3.3 V, 5 V, or 24 V system components. The P4SMA30CA-E3/61 maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is P4SMA30CA-E3/61 qualified for automotive applications?
Yes, P4SMA30CA-E3/61 is AEC-Q101 qualified when ordered with the HE3 or HM3 suffix (e.g., P4SMA30CAHE3_A). The base part number P4SMA30CA-E3/61 itself carries the E3 commercial-grade suffix and is RoHS-compliant but not automatically AEC-Q101 certified - qualification requires explicit ordering with HE3/HM3. For automotive designs, always verify the full ordering code and consult Vishay's qualification reports. The P4SMA30CA-E3/61 shares the same die and construction as qualified variants, enabling direct drop-in use where AEC-Q101 is not mandated.
What does the "CA" suffix mean in P4SMA30CA-E3/61?
The "CA" suffix in P4SMA30CA-E3/61 denotes a bidirectional Transient Voltage Suppressor - meaning the device provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. Unlike unidirectional "A" versions (e.g., P4SMA30A), the CA variant has no cathode band marking and functions identically across both terminals. This makes P4SMA30CA-E3/61 ideal for AC signal lines, differential buses like CAN or RS-485, and floating power domains where polarity reversal is possible.
What is the thermal resistance of P4SMA30CA-E3/61, and how does it affect layout?
The P4SMA30CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - as specified in the Vishay datasheet. This high RθJA means power dissipation must be carefully managed: sustained surge events require adequate copper area and airflow, and continuous power must remain below 3.3 W (PD rating). Layouts should avoid narrow traces and use thermal vias under pads if operating near thermal limits. The P4SMA30CA-E3/61 is not intended for continuous power regulation - only transient suppression.
Can P4SMA30CA-E3/61 replace P4SMA33CA in a 24 V system?
P4SMA30CA-E3/61 can replace P4SMA33CA only if the 30 V vs. 33 V standoff voltage (VWM) aligns with system margin requirements. With 30 V VWM, P4SMA30CA-E3/61 triggers earlier than P4SMA33CA (33 V VWM), offering tighter clamping but potentially higher leakage in nominal 24 V operation. Both share identical SMA packaging and bidirectional function. However, P4SMA30CA-E3/61 has lower clamping voltage (41.4 V vs. 45.7 V for P4SMA33CA), which may improve protection for sensitive downstream ICs - provided the earlier conduction does not cause false triggering. Verify system tolerance before substitution. The P4SMA30CA-E3/61 remains a valid alternative where faster response and lower VC outweigh VWM trade-offs.
P4SMA30CA-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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P4SMA30CA-E3/61 FAQ
1.How can I place an order for P4SMA30CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CA-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 P4SMA30CA-E3/61 reliable?
The price and inventory of P4SMA30CA-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 P4SMA30CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA30CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CA-E3/61?
P4SMA30CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CA-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 P4SMA30CA-E3/61?
For technical support, including P4SMA30CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA30CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA30CA-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 P4SMA30CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA30CA-E3/61?
All P4SMA30CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CA-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 P4SMA30CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA30CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30CA-E3/61 Tags
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