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Vishay General Semiconductor - Diodes Division P4SMA300A-E3/61
- Part No.:
- P4SMA300A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA300A-E3/61.pdf
- Description:
- TVS DIODE 256VWM 414VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,141
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Product details
Overview
P4SMA300A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-voltage transient protection in power rails and signal lines. It features a 300 V standoff voltage (VWM), 315 V maximum breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), clamping voltage of 414 V at 0.73 A, and operates across -65 °C to +150 °C junction temperature - deployed in industrial power supplies and telecom line interfaces.
For engineers reviewing the P4SMA300A-E3/61 datasheet, P4SMA300A-E3/61 pinout, P4SMA300A-E3/61 application, or P4SMA300A-E3/61 equivalent, key selection criteria include unidirectional clamping behavior, SMA (DO-214AC) package compatibility, 414 V VC rating under 10/1000 µs surge, thermal resistance (RθJA = 120 °C/W), and AEC-Q101 qualification status for automotive-grade variants.
Technical Context
The P4SMA300A-E3/61 uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its unidirectional polarity enables DC rail protection with cathode-band identification, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
Rated for 400 W peak pulse power (10/1000 µs waveform) and 3.3 W steady-state power dissipation, the device delivers low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.31), ensuring predictable voltage limiting during repetitive surges up to 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC blocking threshold. |
| VBR (Breakdown Voltage) | 285–315 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC (Clamping Voltage) | 414 V at IPPM = 0.73 A (10/1000 µs) - Actual voltage seen by protected circuit during surge; critical for downstream IC survivability. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability; validated on 5.0 mm × 5.0 mm copper pads. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal quiescent current loss; preserves efficiency in high-impedance sensing or battery-backed circuits. |
| TJ max | +150 °C - Enables operation in under-hood automotive or enclosed industrial environments without derating. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs PCB copper area requirements for thermal management. |
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. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration. |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to protected line (e.g., 300 V rail); conducts surge current toward ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature cycling. |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) in properly laid out PCBs. |
| MSL Level 1, 260 °C peak reflow | Enables standard SMT assembly without moisture sensitivity concerns or baking requirements. |
| AEC-Q101 qualified variant available | P4SMA300AHE3_B/H confirms suitability for automotive power electronics per stress test requirements. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off spikes). |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: Protecting 277 V AC/DC rectified output rails against load dump and switching transients in DIN-rail power supplies. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between DC+ and chassis ground. Use Value: Limits transient excursions to ≤414 V, safeguarding downstream DC-DC controllers rated for 450 V input. |
Use Scenario: Shielding RS-485 transceivers and isolation amplifiers on long-haul telecom trunk lines exposed to induced lightning surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential bus lines (A/B), referenced to local ground plane. Use Value: Responds in <1 ns to sub-microsecond transients, preventing latch-up or gate oxide damage in 3.3 V interface ICs. |
| Automotive Body Control Module | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding 12 V/24 V microcontroller I/O and sensor inputs in BCMs subjected to ISO 7637-2 pulse 5a (load dump). IC Role / Device Role / Timing Role: Secondary protection stage after fuse and primary LC filter; mounted near connector entry point. Use Value: Withstands 300 W surge above 91 V per spec, meeting OEM requirements for 35 V load dump clamping. |
Use Scenario: Suppressing commutation spikes on 300–400 V DC link capacitors in solar string inverters during IGBT turn-off. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC+ and DC−, absorbing stored inductive energy from stray inductance. Use Value: 400 W rating supports repeated 10/1000 µs events typical in MPPT cycling, extending capacitor and gate driver lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ300A-E3/5A | Same VWM/VBR/VC specs; identical SMA package; 7500 pcs/reel vs. 1800 pcs/reel for P4SMA300A-E3/61. | No functional difference; suitable for high-volume production runs requiring larger reels. | Select SMAJ300A-E3/5A when optimizing for tape-and-reel logistics and reduced changeover frequency. |
| 1.5SMC300A | Higher PPPM (1500 W), larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), RθJA ≈ 30 °C/W vs. 120 °C/W. | Better thermal performance and surge margin but requires 3× PCB area; not drop-in compatible. | Choose 1.5SMC300A only when system-level surge testing exceeds 400 W or thermal constraints demand lower junction rise. |
Compared with SMAJ300A-E3/5A, P4SMA300A-E3/61 offers identical electrical protection in a cost-optimized reel size for mid-volume builds; versus 1.5SMC300A, it trades surge headroom and thermal headroom for compactness and layout flexibility in space-constrained designs.
Availability
P4SMA300A-E3/61 is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, and renewable energy inverters requiring stable component supply with RoHS-compliant, commercial-grade reliability.
Supply support for P4SMA300A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and telecom systems - engineered for automated placement, robust surge handling, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of the P4SMA300A-E3/61 under standard surge conditions?
The P4SMA300A-E3/61 has a maximum clamping voltage (VC) of 414 V when subjected to a 10/1000 µs waveform at its rated peak pulse current of 0.73 A. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA300A-E3/61 maintains this clamping performance across its full operating temperature range.
Is the P4SMA300A-E3/61 suitable for automotive applications?
The base P4SMA300A-E3/61 is a commercial-grade part. However, the AEC-Q101 qualified variant P4SMA300AHE3_B/H is available for automotive use, meeting stress test requirements for body electronics and infotainment power rails. The P4SMA300A-E3/61 itself is not AEC-Q101 certified and should not be used in safety-critical or under-hood automotive systems without validation.
What does the "-E3/61" suffix indicate in P4SMA300A-E3/61?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/61" specifies packaging in 7-inch diameter plastic tape and reel containing 1800 units. This ordering code aligns with Vishay's standard delivery format for surface-mount devices and ensures compatibility with pick-and-place equipment calibrated for DO-214AC carriers.
How does the thermal resistance of the P4SMA300A-E3/61 affect PCB layout?
The P4SMA300A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, meaning each watt of dissipated power raises junction temperature by 120 °C above ambient - assuming minimum recommended pad layout (0.2" × 0.2" copper per terminal). To maintain TJ ≤ 150 °C at 3.3 W, ambient must stay below 110 °C unless additional copper or thermal vias are added. The P4SMA300A-E3/61 requires careful thermal pad design in high-power surge scenarios.
Can the P4SMA300A-E3/61 be used in bidirectional configurations?
No - the P4SMA300A-E3/61 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires a CA-suffixed part such as P4SMA300CA. Using the P4SMA300A-E3/61 in reverse-biased AC applications risks catastrophic failure due to lack of symmetrical avalanche structure. Always verify polarity alignment before placing the P4SMA300A-E3/61 in circuit.
P4SMA300A-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 730mA
- Power - Peak Pulse:
- 300W
- 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)
P4SMA300A-E3/61 FAQ
1.How can I place an order for P4SMA300A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA300A-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 P4SMA300A-E3/61 reliable?
The price and inventory of P4SMA300A-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 P4SMA300A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA300A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA300A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA300A-E3/61?
P4SMA300A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA300A-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 P4SMA300A-E3/61?
For technical support, including P4SMA300A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA300A-E3/61 requirements.
6.How does Aetrix verify that P4SMA300A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA300A-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 P4SMA300A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA300A-E3/61?
All P4SMA300A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA300A-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 P4SMA300A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA300A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA300A-E3/61 Tags
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