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Vishay General Semiconductor - Diodes Division P4SMA43AHM3/I
- Part No.:
- P4SMA43AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43AHM3/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,314
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Product details
Overview
P4SMA43AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 43 V breakdown voltage (VBR = 40.9–45.2 V at IT = 1.0 mA), 36.8 V stand-off voltage (VWM), and 59.3 V clamping voltage (VC) at 6.7 A peak pulse current (IPPM). It delivers 400 W peak pulse power (10/1000 µs waveform) and is AEC-Q101 qualified for automotive-grade reliability in power rail and signal line protection.
For engineers reviewing the P4SMA43AHM3/I datasheet, P4SMA43AHM3/I pinout, P4SMA43AHM3/I application, or P4SMA43AHM3/I equivalent, this device is selected for robust ESD and surge immunity in automotive ECUs, industrial sensor interfaces, and DC power input stages where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are required.
Technical Context
The P4SMA43AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 µA at VWM), while thermal resistance RθJA = 120 °C/W supports operation up to TJ = 150 °C under defined PCB pad layout (0.2" × 0.2" copper).
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge), it exhibits <1 ns response time and low incremental surge resistance-critical for protecting downstream MOSFETs and ICs from inductive switching spikes and lightning-induced transients on 24 V/48 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1.0 mA - defines precise avalanche onset for predictable clamping behavior |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 59.3 V at 6.7 A (10/1000 µs) - limits protected circuit voltage during worst-case surge |
| PPPM | 400 W - peak transient energy absorption capability with 0.01% duty cycle |
| IFSM | 40 A (8.3 ms half-sine) - withstands repetitive inrush or fault currents without degradation |
| TJ max. | +150 °C - enables use in under-hood automotive environments and high-ambient industrial settings |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with matte tin leads, J-STD-002 solderable |
Pinout & Package
SMA (DO-214AC) package: surface-mount, single-axis molded case with cathode band marking; dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); terminals are matte tin-plated, compliant with JESD 22-B102 and J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 24 V supply or CAN_H); band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental standards and end-of-life recycling requirements |
| 400 W peak pulse power (10/1000 µs) | Protects against severe transients such as ISO 7637-2 Pulse 5a (load dump) in 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on downstream silicon, extending IC lifetime |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: 24 V battery-fed ECU power rail exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Clamps to 59.3 V at 6.7 A, limiting stress on 36 V-rated input stages and meeting ISO 16750-2 requirements. |
Use Scenario: Analog output line of a pressure sensor in factory automation equipment. IC Role / Device Role / Timing Role: TVS shunt-connected across signal and ground to suppress ESD events and cable discharge. Use Value: Sub-1 ns response and <1.0 µA leakage at 36.8 V preserve signal integrity and measurement accuracy. |
| Telecom DC Power Interface | Motor Drive Gate Driver Protection |
|
Use Scenario: -48 V telecom rectifier output feeding base station backplane. IC Role / Device Role / Timing Role: Unidirectional TVS on input side of hot-swap controller to absorb lightning-induced surges. Use Value: 400 W rating handles IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) without failure. |
Use Scenario: High-side gate drive line of an IGBT module in HVAC inverter. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp Miller-induced voltage spikes during switching. Use Value: Low VC/VBR ratio prevents false turn-on while maintaining gate oxide safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 | Same VBR range (40.9–45.2 V), but SMB (DO-214AA) package - 20% larger footprint, higher RθJA (100 °C/W) | Preferred where board space allows and higher thermal mass improves surge endurance | Select when higher IPPM (11.7 A) and 600 W rating justify larger package and layout change |
| 1.5SMC43AHE3/A | Same electrical specs, but SMC (DO-214AB) package - 30% larger, RθJA = 75 °C/W, 1500 W rating | Used in high-energy industrial surge protectors requiring >1 kA handling | Choose only if system-level surge testing demands >10× the energy absorption of P4SMA43AHM3/I |
Compared with SMBJ43A-E3/52 and 1.5SMC43AHE3/A, the P4SMA43AHM3/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W capability-making it the preferred choice for space-constrained automotive and industrial modules where MSL Level 1 reflow and halogen-free compliance are mandatory.
Availability
P4SMA43AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4SMA43AHM3/I 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 automotive-grade qualification.
The P4SMA series is designed specifically for surface-mount transient voltage suppression in harsh environments-targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low profile, and repeatable clamping performance are essential.
FAQ
What is the clamping voltage of the P4SMA43AHM3/I under a 10/1000 µs surge?
The P4SMA43AHM3/I clamps to a maximum of 59.3 V at 6.7 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and reflects worst-case VC across temperature and process variation. The P4SMA43AHM3/I maintains this clamping performance while delivering 400 W peak power dissipation, making it suitable for protecting 36 V-rated downstream components.
Is the P4SMA43AHM3/I qualified for automotive use?
Yes, the P4SMA43AHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024, Doc. #88367). It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance-enabling deployment in engine control modules, body controllers, and ADAS sensor units where automotive-grade reliability is mandated.
What does the "HM3" suffix indicate in P4SMA43AHM3/I?
The "HM3" suffix in P4SMA43AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free molding compound, and "3" confirms RoHS compliance. The trailing "/I" specifies packaging in 13-inch tape-and-reel (7500 units per reel), per Vishay's ordering information table.
Can the P4SMA43AHM3/I be used in bidirectional configurations?
No, the P4SMA43AHM3/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") in its part number and explicit designation in Vishay's datasheet Table 1. Bidirectional variants use the "CA" suffix (e.g., P4SMA43CA). Using P4SMA43AHM3/I in bidirectional circuits would result in forward conduction during negative transients, causing failure. For AC or dual-polarity protection, select a verified bidirectional part.
What is the maximum operating junction temperature for the P4SMA43AHM3/I?
The P4SMA43AHM3/I has a maximum junction temperature (TJ) of +150 °C, validated per Vishay's thermal characteristics table. This rating applies under specified mounting conditions: 0.2" × 0.2" copper pads per terminal. Derating is required above TA = 25 °C per Figure 2, with RθJA = 120 °C/W enabling reliable operation in under-hood automotive and industrial enclosures where ambient temperatures reach 125 °C.
P4SMA43AHM3/I 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
P4SMA43AHM3/I FAQ
1.How can I place an order for P4SMA43AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43AHM3/I 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 P4SMA43AHM3/I reliable?
The price and inventory of P4SMA43AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA43AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43AHM3/I?
P4SMA43AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43AHM3/I 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 P4SMA43AHM3/I?
For technical support, including P4SMA43AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43AHM3/I requirements.
6.How does Aetrix verify that P4SMA43AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA43AHM3/I 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 P4SMA43AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA43AHM3/I?
All P4SMA43AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43AHM3/I, 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 P4SMA43AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA43AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43AHM3/I Tags
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