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Vishay General Semiconductor - Diodes Division P4SMA75AHM3/H
- Part No.:
- P4SMA75AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75AHM3/H.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,784
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Product details
Overview
P4SMA75AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 75 V standoff voltage (VWM), 78.8 V maximum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It clamps transients to 104 V at 3.9 A peak pulse current and is AEC-Q101 qualified for automotive-grade reliability in power rail and signal line protection.
For engineers reviewing the P4SMA75AHM3/H datasheet, P4SMA75AHM3/H pinout, P4SMA75AHM3/H application, or P4SMA75AHM3/H equivalent, this device is selected for robust overvoltage suppression 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 P4SMA75AHM3/H operates as a unidirectional avalanche diode with glass-passivated junction, enabling precise voltage clamping during transient events such as load dump, ESD, and inductive switching spikes. Its 104 V clamping voltage at 3.9 A IPPM ensures safe margin below typical 12 V system overvoltage thresholds.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 400 W peak pulse power per JEDEC-standard 10/1000 µs waveform and supports repetitive surge duty cycles up to 0.01%. Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), confirming suitability for compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 64.1 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating range for 12 V–24 V systems. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transients without premature leakage. |
| VC (Clamping) | 104 V at 3.9 A IPPM - Measured clamping voltage under 10/1000 µs surge; provides defined overvoltage ceiling for protected ICs. |
| PPPM | 400 W (10/1000 µs) - Peak surge energy handling capacity; sufficient for ISO 7637-2 Pulse 1/2a/5a automotive transients. |
| ID (Leakage) | 1.0 µA max at VWM - Ultra-low reverse leakage preserves system efficiency and prevents false triggering in high-impedance circuits. |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood automotive environments and industrial enclosures. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to protected circuit's higher-potential node (e.g., VBUS); conducts when transient exceeds VBR. |
| Anode | Cathode of internal avalanche junction | Connected to ground or lower-potential reference; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors under stress conditions per JESD22-A108. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-20E requirements; eliminates brominated flame retardants for safer recycling and manufacturing. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (e.g., ESD > 30 kV), critical for protecting sensitive gate drivers and ADC inputs. |
| Fast response time (<1 ns) | Enables clamping before transient energy reaches downstream components; verified via TLP testing per JEDEC JS-001. |
| 400 W peak pulse power (10/1000 µs) | Supports repeated surge events in industrial motor drives and telecom power supplies without degradation over 10⁵ cycles. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails in vehicle body control modules against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, conducting only during positive overvoltage events to clamp voltage to ≤104 V. Use Value: Prevents MCU reset or latch-up by limiting transient voltage within 150 ms duration, leveraging 400 W surge rating and +150 °C TJ max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation from EFT and surge coupling. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines, absorbing sub-100 ns ESD pulses while maintaining <1 µA leakage at 24 V nominal. Use Value: Maintains signal integrity with 104 V clamping and 1.0 µA leakage, avoiding baseline drift or DAC saturation in precision measurement circuits. |
| DC-DC Converter Input Stage | Telecom Power Interface |
|
Use Scenario: Safeguarding buck converter input capacitors and MOSFET gates from inductive kickback during hot-swap insertion in PoE-powered equipment. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-input rail, clamping surges before they reach controller ICs. Use Value: Enables reliable operation with 71.3–78.8 V VBR tolerance and 120 °C/W RθJA, allowing thermal design without heatsinks in space-constrained modules. |
Use Scenario: Front-end protection for -48 V telecom rectifier outputs exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: TVS deployed in series with fuse and MOV, providing fast secondary clamping after primary suppression. Use Value: Delivers 104 V clamping at 3.9 A with 0.105 %/°C VBR tempco, ensuring stable threshold across -40 to +85 °C ambient ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Same VWM (64.1 V) and VC (104 V), but SMB package (DO-214AA); 600 W PPPM rating; higher thermal resistance (150 °C/W). | Higher power handling but larger footprint; less suitable for ultra-dense automotive PCBs where SMA size is critical. | Select SMBJ75A only if 600 W surge margin is required and board area permits larger package. |
| 1.5SMC75A | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 100 °C/W; lead-free only (no halogen-free option). | Used in high-energy industrial UPS and power supplies; lacks AEC-Q101 and halogen-free certification. | Choose 1.5SMC75A for non-automotive, high-power applications where RoHS-only compliance suffices. |
Compared with SMBJ75A and 1.5SMC75A, the P4SMA75AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMA footprint-making it the only choice for space-constrained, automotive-grade designs requiring full regulatory alignment and repeatable surge performance.
Availability
P4SMA75AHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply front-ends requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4SMA75AHM3/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 automotive-grade validation.
The P4SMA Series is designed specifically for transient voltage suppression in harsh-environment applications, targeting automotive, industrial, and telecom systems where robustness, low clamping, and standardized packaging are essential.
FAQ
What is the maximum clamping voltage of the P4SMA75AHM3/H under standard test conditions?
The P4SMA75AHM3/H has a maximum clamping voltage (VC) of 104 V when subjected to a 10/1000 µs surge waveform at 3.9 A peak pulse current (IPPM), as specified in the Vishay datasheet revision 09-Jan-2024. This value is measured at TA = 25 °C with recommended 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA75AHM3/H maintains this clamping performance across its full operating temperature range.
Is the P4SMA75AHM3/H suitable for automotive applications?
Yes, the P4SMA75AHM3/H is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by its HM3 suffix and inclusion in Vishay's AEC-Q101-certified P4SMA family. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance relevant to engine control, body electronics, and ADAS subsystems. The P4SMA75AHM3/H also complies with JESD201 Class 2 whisker resistance and operates reliably from -65 °C to +150 °C junction temperature.
What does the "HM3" suffix indicate in P4SMA75AHM3/H?
The "HM3" suffix in P4SMA75AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates the halogen-free molding compound, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "/H" ending specifies 7" tape-and-reel packaging (1800 units per reel). This distinguishes the P4SMA75AHM3/H from commercial-grade E3/M3 variants and non-automotive HE3 versions.
How does the P4SMA75AHM3/H compare to bidirectional TVS diodes in circuit design?
The P4SMA75AHM3/H is unidirectional and must be oriented with cathode toward the protected voltage rail-unlike bidirectional types that suppress both polarities. Its 64.1 V VWM allows use on positive DC lines (e.g., 12 V, 24 V), whereas bidirectional equivalents like P4SMA75CA have half the VWM (32.05 V) for AC or dual-rail applications. The P4SMA75AHM3/H offers lower leakage (<1 µA) and tighter VBR tolerance than most bidirectional variants, making it preferred for DC power rail protection where polarity is fixed.
What is the thermal resistance specification for the P4SMA75AHM3/H?
The P4SMA75AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured under standard conditions (TA = 25 °C, 0.2" × 0.2" copper pads). These values confirm its ability to dissipate surge energy without external heatsinking in typical SMT layouts. The P4SMA75AHM3/H remains within safe operating limits even during repetitive 0.01% duty cycle surges, provided PCB copper area meets Vishay's minimum pad layout recommendations.
P4SMA75AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 3.9A
- 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)
P4SMA75AHM3/H FAQ
1.How can I place an order for P4SMA75AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75AHM3/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 P4SMA75AHM3/H reliable?
The price and inventory of P4SMA75AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA75AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75AHM3/H?
P4SMA75AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75AHM3/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 P4SMA75AHM3/H?
For technical support, including P4SMA75AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75AHM3/H requirements.
6.How does Aetrix verify that P4SMA75AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA75AHM3/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 P4SMA75AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA75AHM3/H?
All P4SMA75AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75AHM3/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 P4SMA75AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA75AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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