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Vishay General Semiconductor - Diodes Division P4SMA47AHM3_A/H
- Part No.:
- P4SMA47AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47AHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,249
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Product details
Overview
P4SMA47AHM3_A/H 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), 64.8 V maximum clamping voltage (VC) at 6.2 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power electronics.
For engineers reviewing the P4SMA47AHM3_A/H datasheet, P4SMA47AHM3_A/H pinout, P4SMA47AHM3_A/H application, or P4SMA47AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, MSL Level 1 rating, and halogen-free RoHS-compliant construction under HM3 suffix.
Technical Context
This TVS operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated silicon junction technology for fast response (<1 ns) and stable breakdown characteristics. Its thermal resistance (RθJA = 120 °C/W) and RθJL = 30 °C/W support reliable operation on standard 0.2" × 0.2" copper pads without forced cooling.
The device meets UL 497B recognition (QVGQ2, E136766) and is designed for repetitive transient suppression at ≤0.01% duty cycle. Clamping performance is specified at IPPM = 6.2 A, delivering VC = 64.8 V - critical for safeguarding 48 V nominal systems where overvoltage margins must remain below 70 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA test current - defines precise voltage threshold for avalanche conduction onset |
| VWM | 40.2 V - maximum continuous reverse standoff voltage; ensures no leakage conduction during normal 48 V rail operation |
| VC @ IPPM | 64.8 V at 6.2 A - clamped voltage during 10/1000 µs surge; keeps protected circuitry below absolute maximum ratings |
| PPPM | 400 W - peak pulse power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a in automotive environments |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine); enables safe handling of accidental polarity reversals |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood or industrial enclosures without derating below 125 °C ambient |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm pad footprint and MSL Level 1 reflow compatibility |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, cathode band marking for unidirectional polarity, and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to system ground or low-side reference; completes clamping loop during positive transients |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 48 V supply rail); initiates clamping when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Halogen-free & RoHS-compliant (HM3) | Meets JEDEC J-STD-20 and JESD201 Class 2 whisker resistance; supports green manufacturing requirements |
| 400 W peak pulse power (10/1000 µs) | Withstands high-energy transients typical of solenoid switching and load dump events in 48 V architectures |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping - critical for protecting 60 V-rated MOSFETs and gate drivers |
| Fast response time (<1 ns) | Engages before sensitive downstream components experience damaging overvoltage stress |
Applications
| Automotive 48 V Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 48 V DC-DC converter inputs and load-switch outputs against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly at connector or MOSFET drain node. Use Value: Limits transient voltage to 64.8 V, ensuring compliance with LV124 Class D requirements and preventing gate oxide rupture in 60 V Si MOSFETs. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor mounted at PCB edge connector, upstream of op-amp input stage. Use Value: Maintains signal integrity with <100 pF junction capacitance while clamping ±8 kV contact ESD per IEC 61000-4-2 to safe levels. |
| Telecom Power Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC/DC controllers from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary surge arrestors, absorbing residual energy before it reaches ICs. Use Value: Delivers 400 W pulse handling with 6.2 A IPPM, enabling coordination with upstream GDTs or MOVs in multi-stage protection schemes. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in smart home appliances (e.g., vacuum cleaners, power tools). IC Role / Device Role / Timing Role: Freewheeling TVS across motor terminals, conducting inductive energy into local bulk capacitor during commutation. Use Value: Withstands 40 A IFSM and 150 °C TJ, supporting high-duty-cycle operation without thermal runaway or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 (Vishay) | Same VBR range but SMB package (DO-214AA); 600 W PPPM, higher IPPM (9.8 A), larger footprint | Better suited for higher-energy transients; requires larger PCB area and different pad layout | Select when 600 W surge margin is required and board space permits SMB footprint |
| 1.5SMC47A (ON Semiconductor) | Same VBR/VC specs but SMC (DO-214AB) package; 1500 W PPPM, 23.3 A IPPM, higher thermal mass | Designed for heavy industrial environments with frequent high-amplitude surges; not AEC-Q101 qualified | Choose for cost-sensitive industrial designs where automotive qualification is unnecessary and higher surge rating is prioritized |
Compared with P4SMA47AHM3_A/H, SMBJ47A-E3/52 offers greater surge headroom in a slightly larger package, while 1.5SMC47A delivers significantly higher pulse power in a non-automotive-qualified SMC outline - making P4SMA47AHM3_A/H the optimal choice for space-constrained, AEC-Q101–mandated 48 V automotive modules.
Availability
P4SMA47AHM3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom power conditioning, and consumer motor control requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA47AHM3_A/H 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, efficiency, and application-specific optimization.
The P4SMA Series is engineered for surface-mount transient voltage suppression in automotive, industrial, and communications systems - delivering AEC-Q101–qualified robustness in compact SMA packages for high-volume automated assembly.
FAQ
What is the breakdown voltage tolerance for P4SMA47AHM3_A/H?
The P4SMA47AHM3_A/H has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 47 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage protection design in 48 V systems where margin to downstream component ratings is limited.
Is P4SMA47AHM3_A/H suitable for bidirectional transient protection?
No, P4SMA47AHM3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode-band marking. For bidirectional protection, Vishay offers the P4SMA47CA variant. Using P4SMA47AHM3_A/H in AC-coupled or symmetric transient scenarios would result in forward conduction during negative excursions, potentially damaging the device or failing to clamp.
Does P4SMA47AHM3_A/H meet automotive qualification standards?
Yes, P4SMA47AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024, Doc. #88367). This qualification covers stress tests including HTGB, H3TRB, TC, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of P4SMA47AHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA47AHM3_A/H is 64.8 V at 6.2 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - essential for verifying compatibility with 60 V-rated power switches and interface ICs.
Can P4SMA47AHM3_A/H be used in lead-free reflow processes?
Yes, P4SMA47AHM3_A/H is rated for MSL Level 1 per J-STD-020 and supports lead-free reflow with a maximum peak temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards, and the package is qualified for JEDEC J-STD-20 moisture sensitivity classification without baking requirements.
P4SMA47AHM3_A/H 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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA47AHM3_A/H FAQ
1.How can I place an order for P4SMA47AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47AHM3_A/H 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 P4SMA47AHM3_A/H reliable?
The price and inventory of P4SMA47AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA47AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47AHM3_A/H?
P4SMA47AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47AHM3_A/H 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 P4SMA47AHM3_A/H?
For technical support, including P4SMA47AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA47AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA47AHM3_A/H 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 P4SMA47AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA47AHM3_A/H?
All P4SMA47AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47AHM3_A/H, 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 P4SMA47AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA47AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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