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Vishay General Semiconductor - Diodes Division P4SMA30CA-M3/61
- Part No.:
- P4SMA30CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CA-M3/61.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA30CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode 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 at 9.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in sensor interface protection and DC power rail surge suppression.
For engineers reviewing the P4SMA30CA-M3/61 datasheet, P4SMA30CA-M3/61 pinout, P4SMA30CA-M3/61 application, or P4SMA30CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compliance with UL 497B for telecom and automotive electronics protection.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions due to its bidirectional construction. It responds within <1 ns to transient overvoltages and maintains low incremental surge resistance to limit let-through energy during ESD or lightning-induced surges.
Rated for continuous power dissipation of 3.3 W at 50 °C on infinite heatsink, it supports junction temperatures from –65 °C to +150 °C and meets J-STD-020 MSL Level 1 reflow profile (peak 260 °C). Its glass-passivated junction ensures stable parametric performance under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min) | 33.3 V at 1 mA - Minimum voltage at which avalanche conduction initiates; ensures reliable turn-on during transients. |
| VC (max) | 41.4 V at 9.7 A - Maximum clamped voltage seen by protected circuit; determines worst-case overvoltage exposure. |
| PPPM | 400 W (10/1000 µs) - Peak transient energy absorption capacity; enables protection against IEC 61000-4-5 level 4 surges. |
| ID (max) | 1 µA at VWM - Reverse leakage current; negligible loading on 30 V bias rails in standby mode. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; requires minimal PCB copper area for thermal management. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.0 mm × 5.0 mm pad layout; compatible with automated placement. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward direction; symmetrical with cathode for bidirectional clamping | Enables identical clamping behavior regardless of transient polarity - no orientation required during placement. |
| Cathode | Current exit terminal in forward direction; symmetrical with anode for bidirectional clamping | Functions identically to anode under reverse bias; eliminates need for polarity-aware routing or silkscreen marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal VBR and VC in both polarities - simplifies design for AC-coupled or floating signal lines without polarity constraints. |
| 400 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) with standard coupling networks - suitable for industrial port protection. |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive under-hood and infotainment applications per stress test requirements - includes temperature cycling, HTRB, and ESD. |
| Low-profile SMA package | Height ≤ 2.29 mm - enables use in space-constrained modules such as automotive ECUs and portable sensor nodes. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 and JESD201 Class 2 whisker resistance - ensures long-term solder joint reliability in high-vibration environments. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient overvoltage before reaching sensitive IC inputs. Use Value: Clamps 30 V nominal lines to ≤41.4 V during 9.7 A surges - prevents latch-up or gate oxide damage in downstream op-amps and ADC drivers. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ±10 V analog inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-connected TVS shunting transient energy away from precision instrumentation amplifiers and isolation barriers. Use Value: 1 µA leakage at 30 V ensures minimal offset error in high-impedance input stages; 400 W rating handles repeated 2 kV/1 A surges per IEC 61000-4-4. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Output Clamping |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and RS-485 termination networks in base station line cards. IC Role / Device Role / Timing Role: Fast-response clamping device placed between isolated DC-DC output and communication IC supply pins. Use Value: Sub-1 ns response time limits overshoot duration; UL 497B recognition validates suitability for telecom safety-critical surge paths. |
Use Scenario: Output rail protection in USB-C PD adapters and wireless charging power supplies subject to hot-plug and capacitive load transients. IC Role / Device Role / Timing Role: Final-stage TVS absorbing residual switching spikes and ESD events before reaching USB controller or battery management IC. Use Value: 30 V VWM aligns with 24 V/28 V adapter outputs; 41.4 V VC ensures MOSFET gate drivers remain within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same VWM/VBR/VC specs but SMB package (DO-214AA); 600 W PPPM rating; RθJA = 80 °C/W | Higher power handling and better thermal performance; larger footprint (5.3 mm × 4.6 mm vs. SMA's 4.5 mm × 3.99 mm) | Select when board space allows and higher surge margin (>400 W) is required - e.g., mains-connected equipment. |
| 1.5KE30CA | Through-hole DO-201 package; same electrical specs; 1500 W PPPM; RθJA = 10 °C/W with heatsink | Requires manual or wave soldering; suited for high-reliability legacy designs or prototyping where thermal mass matters | Choose for repair/refurbishment of existing through-hole boards or where mechanical robustness outweighs SMT density needs. |
Compared with SMBJ30CA and 1.5KE30CA, P4SMA30CA-M3/61 offers optimal balance of compact size, automotive qualification, and standardized SMT manufacturability - making it preferred for new-generation automotive sensors and space-constrained industrial modules where AEC-Q101 compliance and DO-214AC footprint are mandatory.
Availability
P4SMA30CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card protection, and consumer power adapter output clamping requiring stable component supply and halogen-free compliance.
Supply support for P4SMA30CA-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 supplier of discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and industrial-grade performance.
The P4SMA Series targets cost-sensitive yet high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for fast response, repeatable clamping, and compatibility with automated SMT assembly lines.
FAQ
What is the clamping voltage of P4SMA30CA-M3/61 at its rated peak pulse current?
The P4SMA30CA-M3/61 has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM), measured using the standard 10/1000 µs waveform. This value represents the highest voltage that will appear across the device during a defined surge event, directly limiting overvoltage stress on downstream components. The P4SMA30CA-M3/61 achieves this while maintaining bidirectional symmetry and low leakage (<1 µA at 30 V).
Is P4SMA30CA-M3/61 qualified for automotive applications?
Yes, P4SMA30CA-M3/61 is AEC-Q101 qualified - confirmed by Vishay's documentation specifying the "M3" suffix as halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive use. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD per AEC-Q101 requirements, making it suitable for under-hood and cabin electronics where reliability under thermal and vibration stress is critical. The P4SMA30CA-M3/61 carries no revision-dependent qualifiers - full qualification applies to this exact part number.
What does the "CA" suffix indicate in P4SMA30CA-M3/61?
The "CA" suffix in P4SMA30CA-M3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics for positive and negative transients. Unlike unidirectional variants (e.g., P4SMA30A), the CA version has no cathode marking and is used where signal lines or power rails may experience voltage reversals or AC-coupled transients. This makes the P4SMA30CA-M3/61 ideal for protecting differential buses like RS-485 or CAN, or floating sensor outputs.
What is the thermal resistance of P4SMA30CA-M3/61, and how does it affect PCB layout?
The P4SMA30CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB with no internal planes. To maintain safe junction temperatures under sustained power dissipation, designers should allocate at least 5 mm² of 1-oz copper per pad and avoid excessive trace length between the P4SMA30CA-M3/61 and adjacent heat sources. For intermittent surge duty, thermal derating per Figure 2 in the datasheet applies above 25 °C ambient.
How does P4SMA30CA-M3/61 compare to unidirectional P4SMA30A-M3/61 in terms of circuit implementation?
P4SMA30CA-M3/61 differs from P4SMA30A-M3/61 in polarity handling: the CA variant is bidirectional with no polarity marking and equal clamping in both directions, whereas the A variant is unidirectional with a cathode band and conducts only in reverse bias. In circuit implementation, P4SMA30CA-M3/61 eliminates orientation checks during placement and supports AC-coupled or floating nodes without series blocking diodes. The P4SMA30CA-M3/61 also exhibits identical VWM (30 V), VBR (33.3 V min), and VC (41.4 V) specs - but its bidirectional nature makes it unsuitable for DC-biased single-polarity rails where forward conduction must be blocked.
P4SMA30CA-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):
- 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-M3/61 FAQ
1.How can I place an order for P4SMA30CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CA-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 P4SMA30CA-M3/61 reliable?
The price and inventory of P4SMA30CA-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 P4SMA30CA-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA30CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CA-M3/61?
P4SMA30CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CA-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 P4SMA30CA-M3/61?
For technical support, including P4SMA30CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CA-M3/61 requirements.
6.How does Aetrix verify that P4SMA30CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA30CA-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 P4SMA30CA-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA30CA-M3/61?
All P4SMA30CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CA-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 P4SMA30CA-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA30CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30CA-M3/61 Tags
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