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Vishay General Semiconductor - Diodes Division P4SMA47AHE3/5A
- Part No.:
- P4SMA47AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47AHE3/5A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,293
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Product details
Overview
P4SMA47AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at IT = 1.0 mA), 400 W peak pulse power (10/1000 µs), and clamping voltage of 64.8 V at IPPM = 6.2 A. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the P4SMA47AHE3/5A datasheet, P4SMA47AHE3/5A pinout, P4SMA47AHE3/5A application, or P4SMA47AHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 40.2 V stand-off voltage (VWM), <1.0 µA reverse leakage at VWM, and thermal resistance of 120 °C/W (junction-to-ambient).
Technical Context
This device operates as a clamping-type TVS diode with avalanche breakdown behavior, triggered when transient voltage exceeds its 40.2 V stand-off threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), enabling protection of sensitive downstream circuitry before damage occurs.
The P4SMA47AHE3/5A is rated for repetitive 10/1000 µs surges up to 400 W (derated above TA = 25 °C) and supports peak forward surge current of 40 A (8.3 ms half-sine). It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at IT = 1.0 mA - defines precise avalanche initiation range for reliable clamping onset |
| VWM | 40.2 V - maximum continuous reverse operating voltage without significant leakage |
| ID @ VWM | <1.0 µA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| VC @ IPPM | 64.8 V at IPPM = 6.2 A - clamped voltage seen by protected circuit during worst-case transient |
| PPPM | 400 W (10/1000 µs) - energy-handling capacity for common lightning/inductive-spike waveforms |
| TJ max | +150 °C - enables operation in high-temperature automotive engine compartments |
| RθJA | 120 °C/W - thermal performance baseline for PCB pad layout design (0.2" × 0.2" copper) |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band on body; RoHS-compliant and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 48 V rail or sensor input) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge events (4 kV/2 Ω) on 48 V systems without failure |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift over lifetime and temperature |
| MSL Level 1 rating | Supports lead-free reflow soldering at 260 °C peak without moisture-induced cracking |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., relay bounce) |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs and body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and ground to clamp positive overvoltage spikes. Use Value: Limits voltage to ≤64.8 V during 400 W surges, preventing damage to 60 V-rated power MOSFETs and LDOs. |
Use Scenario: Safeguarding analog inputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Standoff-mode protector on signal line, conducting only during >40.2 V transients. Use Value: Sub-µA leakage avoids DC offset errors; 64.8 V clamping prevents ADC saturation and front-end op-amp latch-up. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Shielding PoE-powered Ethernet switches and base station RF modules from induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs. Use Value: Fast <1 ns response captures early transient edge; 120 °C/W RθJA allows thermal design with minimal copper area. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, HVAC blowers). IC Role / Device Role / Timing Role: Snubber-connected TVS across motor terminals to absorb inductive kickback. Use Value: 40 A IFSM rating withstands repeated motor start-stop cycles; AEC-Q101 grade ensures field longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/5A | Same VBR range (44.7–49.4 V), but lower PPPM = 400 W (same rating), higher VC = 67.0 V at same IPPM | Marginally higher clamping voltage reduces protection margin for 60 V-rated components | Select P4SMA47AHE3/5A when tighter clamping (64.8 V vs. 67.0 V) is required for safety-critical 48 V rails |
| 1.5SMC47A | Higher package thermal mass (SMC/DO-214AB); identical VBR, VWM, and VC, but PPPM = 1500 W | Over-specified power handling increases cost and board space; not suitable for dense SMT layouts | Choose P4SMA47AHE3/5A for space-constrained automotive modules where 400 W suffices and SMA footprint is mandatory |
Compared with SMAJ47A-E3/5A, P4SMA47AHE3/5A delivers lower clamping voltage for improved system-level surge margin; versus 1.5SMC47A, it provides identical electrical protection in a smaller, AEC-Q101-qualified SMA package optimized for automated placement and thermal-limited PCBs.
Availability
P4SMA47AHE3/5A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC power feeds, and consumer appliance motor control requiring stable component supply and AEC-Q101 compliance.
Supply support for P4SMA47AHE3/5A 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The P4SMA Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, combining AEC-Q101 qualification, low-profile packaging, and tightly controlled clamping parameters.
FAQ
What is the breakdown voltage tolerance for P4SMA47AHE3/5A?
The P4SMA47AHE3/5A has a breakdown voltage VBR specified from 44.7 V to 49.4 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 47 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports robust design margins in 48 V systems where overvoltage thresholds must be precisely controlled.
Is P4SMA47AHE3/5A suitable for automotive applications?
Yes, P4SMA47AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock, making it appropriate for under-hood and chassis-mounted modules operating from −65 °C to +150 °C junction temperature.
What is the maximum clamping voltage of P4SMA47AHE3/5A during a surge event?
The maximum clamping voltage VC of P4SMA47AHE3/5A is 64.8 V at peak pulse current IPPM = 6.2 A using a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during standardized surge testing and is critical for ensuring downstream components (e.g., 60 V MOSFETs) remain within safe operating limits.
Does P4SMA47AHE3/5A have bidirectional capability?
No, P4SMA47AHE3/5A is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA47CA). The unidirectional configuration provides superior clamping performance for DC-supplied circuits where only positive transients require suppression.
What is the thermal resistance of P4SMA47AHE3/5A and how does it affect PCB layout?
P4SMA47AHE3/5A 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. This value guides minimum copper area requirements: reducing thermal resistance requires larger or thermally connected pads, especially in high-duty-cycle surge environments or elevated ambient temperatures.
P4SMA47AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- 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)
P4SMA47AHE3/5A FAQ
1.How can I place an order for P4SMA47AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47AHE3/5A 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 P4SMA47AHE3/5A reliable?
The price and inventory of P4SMA47AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA47AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47AHE3/5A?
P4SMA47AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47AHE3/5A 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 P4SMA47AHE3/5A?
For technical support, including P4SMA47AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47AHE3/5A requirements.
6.How does Aetrix verify that P4SMA47AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA47AHE3/5A 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 P4SMA47AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA47AHE3/5A?
All P4SMA47AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47AHE3/5A, 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 P4SMA47AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA47AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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