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Vishay General Semiconductor - Diodes Division P4SMA30CAHE3/61
- Part No.:
- P4SMA30CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CAHE3/61.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
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Product details
Overview
P4SMA30CAHE3/61 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 or 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 signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA30CAHE3/61 datasheet, P4SMA30CAHE3/61 pinout, P4SMA30CAHE3/61 application, or P4SMA30CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance (RθJA = 120 °C/W) for board-level surge protection design.
Technical Context
The P4SMA30CAHE3/61 operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±33.3 V (VBR min) while maintaining ≤ ±41.4 V (VC max) under 9.7 A (IPPM) 10/1000 µs pulses. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for surface-mount automation, it meets MSL Level 1 per J-STD-020, supports 260 °C reflow peak temperature, and delivers 3.3 W steady-state power dissipation (PD) with 150 °C maximum junction temperature (TJ). No polarity marking is present due to bidirectional symmetry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 24 V nominal systems. |
| VBR (Breakdown Voltage) | 33.3–37.5 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering during ESD or load-switching transients. |
| VC (Clamping Voltage) | 41.4 V at 9.7 A - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC I/O voltage tolerance compliance. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy handling capacity under standard 10/1000 µs waveform; derates to 300 W above 91 V. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; determines required PCB copper area for thermal management. |
| TJ max | 150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
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. Bidirectional construction means no cathode/anode marking; terminals are symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - no polarity orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy surges from inductive switching or lightning-induced transients in industrial control interfaces. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity limitations or baking requirements. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity and contamination versus epoxy-passivated alternatives. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to limit transient overvoltage before it reaches sensitive analog front-ends. Use Value: Maintains signal integrity under ±41.4 V clamping while surviving repeated 400 W surges - meeting AEC-Q101 stress test requirements. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated (30 V) suppression device placed across input terminals to shunt surge current away from optocoupler or microcontroller GPIO. Use Value: Enables robust operation in harsh factory environments where >1 kV fast transients occur - validated for 150 °C junction temperature operation. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers exposed to mains-borne surges. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping element across DC output rails to prevent damage to downstream DC-DC converters or battery management ICs. Use Value: Low clamping voltage (41.4 V) prevents overvoltage stress on 36 V-rated components while supporting automated SMT placement. |
Use Scenario: Primary protection for Ethernet PHY interfaces, RS-485 transceivers, and DSL line drivers subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at board edge to divert surge energy before entering isolation transformers or signal conditioning circuits. Use Value: Symmetrical clamping ensures equal protection for both polarities of differential signaling - critical for full-duplex communication integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 36.7–40.6 V VBR range; same 30 V VWM. | Preferred where higher surge margin is needed (e.g., outdoor telecom equipment); requires larger PCB footprint. | Select SMBJ33CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package. |
| 1.5KE33CA | Through-hole TO-218 package; 1500 W PPPM; 36.7–40.6 V VBR; same 30 V VWM; higher thermal mass but no SMT compatibility. | Suitable for legacy designs or high-reliability power supply inputs where manual assembly or wave soldering is used. | Choose 1.5KE33CA only for through-hole prototyping or repair scenarios - not for new SMT production. |
Compared with SMBJ33CA and 1.5KE33CA, the P4SMA30CAHE3/61 offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and sufficient 400 W surge rating for cost-sensitive automotive and industrial SMT designs - without requiring layout changes or sacrificing reliability.
Availability
P4SMA30CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O modules, and consumer power adapter secondary-side surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for P4SMA30CAHE3/61 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-grade qualification.
The P4SMA series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - combining AEC-Q101 validation, low-profile packaging, and consistent clamping performance across voltage grades.
FAQ
What is the clamping voltage of the P4SMA30CAHE3/61 under a 10/1000 µs surge?
The P4SMA30CAHE3/61 has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and reflects worst-case voltage seen by protected circuitry during transient events - critical for ensuring compatibility with 36 V-rated ICs and interfaces.
Is the P4SMA30CAHE3/61 suitable for automotive applications?
Yes, the P4SMA30CAHE3/61 is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD, making it appropriate for under-hood and cabin electronics such as sensor interfaces and body control modules.
Does the P4SMA30CAHE3/61 have polarity markings?
No, the P4SMA30CAHE3/61 is a bidirectional TVS diode and carries no polarity marking. Its symmetrical construction allows mounting in either orientation - unlike unidirectional variants (e.g., P4SMA30A) which feature a cathode band. This simplifies PCB layout and eliminates orientation errors during automated placement.
What is the thermal resistance of the P4SMA30CAHE3/61?
The P4SMA30CAHE3/61 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 Thermal Characteristics table of Vishay document 88367. This value guides PCB copper area design to maintain TJ ≤ 150 °C under sustained power dissipation.
How does the P4SMA30CAHE3/61 differ from the unidirectional P4SMA30AHE3/61?
The P4SMA30CAHE3/61 is bidirectional with symmetrical clamping in both directions and no polarity marking, whereas the P4SMA30AHE3/61 is unidirectional with a cathode band and conducts only in reverse bias. Their VWM (30 V), VBR (33.3–37.5 V), and VC (41.4 V) values are identical, but the "CA" variant is required for AC signal lines or differential buses like RS-485 or CAN.
P4SMA30CAHE3/61 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA30CAHE3/61 FAQ
1.How can I place an order for P4SMA30CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CAHE3/61 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 P4SMA30CAHE3/61 reliable?
The price and inventory of P4SMA30CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA30CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CAHE3/61?
P4SMA30CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CAHE3/61 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 P4SMA30CAHE3/61?
For technical support, including P4SMA30CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA30CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA30CAHE3/61 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 P4SMA30CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA30CAHE3/61?
All P4SMA30CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CAHE3/61, 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 P4SMA30CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA30CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30CAHE3/61 Tags
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