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Vishay General Semiconductor - Diodes Division P4SMA7.5AHM3/I
- Part No.:
- P4SMA7.5AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA7.5AHM3/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,536
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Product details
Overview
P4SMA7.5AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 7.13 V minimum breakdown voltage (VBR), 6.40 V standoff voltage (VWM), 11.3 V maximum clamping voltage (VC) at 35.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P4SMA7.5AHM3/I datasheet, P4SMA7.5AHM3/I pinout, P4SMA7.5AHM3/I application, or P4SMA7.5AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), polarity marking convention, and direct alternative part comparisons for robust overvoltage design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity identification, optimized for fast transient suppression in DC-biased lines. Its glass-passivated junction ensures stable leakage performance (<500 µA at VWM) and low incremental surge resistance, enabling effective protection against ESD (IEC 61000-4-2) and inductive switching spikes.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow peak. Its halogen-free, RoHS-compliant construction (HM3 suffix) and AEC-Q101 qualification confirm suitability for automotive-grade embedded electronics requiring long-term reliability under thermal cycling and vibration stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.40 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin for protected line. |
| VBR (min) | 7.13 V at 10 mA test current - Guaranteed breakdown initiation threshold; ensures predictable clamping onset during transients. |
| VC | 11.3 V at 35.4 A IPPM - Clamped voltage under 400 W 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 400 W - Peak pulse power handling capability; supports robust protection against lightning-induced surges per IEC 61000-4-5. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating requirements above 25 °C ambient. |
| TJ max | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential reference; completes clamping path during reverse-biased transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 5 V rail or sensor output); conducts surge current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables single-device protection against severe industrial surge events without cascaded TVS staging. |
| AEC-Q101 qualified (HM3 suffix) | Validates reliability for automotive applications including engine control modules and ADAS sensor interfaces. |
| Glass passivated chip junction | Reduces parameter drift over time and improves long-term stability of VBR and leakage under thermal cycling. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without preconditioning or special handling requirements. |
| Low profile DO-214AC footprint | Minimizes PCB area while maintaining thermal performance; compatible with automated pick-and-place equipment. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤11.3 V, preventing latch-up or damage to 12-bit SAR ADCs operating at 3.3 V or 5 V supply. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subject to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminal and common rail. Use Value: Absorbs 400 W surges without degradation, maintaining <500 µA leakage at 24 V nominal to avoid false triggering. |
| USB Power Line Protection | DC-DC Converter Input Protection |
Use Scenario: Overvoltage suppression on VBUS line of USB 2.0 ports in automotive infotainment head units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND, upstream of USB switch IC. Use Value: Clamps 15 kV ESD contact discharge to <12 V within <1 ns, preserving USB PHY integrity and enumeration reliability. |
Use Scenario: Input surge protection for 5 V buck converters powering safety-critical MCU subsystems. IC Role / Device Role / Timing Role: Primary clamping device on converter input rail, coordinated with fuse and filter capacitor. Use Value: Withstands repetitive 300–400 W transients while maintaining RθJA = 120 °C/W on standard PCB layout, avoiding thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same VWM (6.4 V), slightly higher VC (12.0 V), lower PPPM (400 W same), but not AEC-Q101 qualified. | Commercial-grade only; unsuitable for automotive production where AEC-Q101 compliance is mandatory. | Select P4SMA7.5AHM3/I when automotive qualification, halogen-free materials, or extended temperature validation are required. |
| 1.5SMC7.5A | Higher power rating (1500 W), larger SMC (DO-214AB) package, VWM = 6.4 V, VC = 12.9 V, not AEC-Q101 qualified. | Used where higher surge energy absorption is needed, but requires larger PCB footprint and lacks automotive qualification. | Choose P4SMA7.5AHM3/I for space-constrained automotive designs needing AEC-Q101 and DO-214AC compatibility. |
Compared with SMAJ7.5A and 1.5SMC7.5A, P4SMA7.5AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and DO-214AC footprint - making it the only option among the three validated for automotive front-end sensor protection without layout or compliance trade-offs.
Availability
P4SMA7.5AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and USB power line protection requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for P4SMA7.5AHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets cost-sensitive yet reliability-critical transient protection applications, with variants engineered specifically for AEC-Q101 compliance, halogen-free manufacturing, and automated SMT assembly in harsh environments.
FAQ
What is the clamping voltage of P4SMA7.5AHM3/I at its rated peak pulse current?
The P4SMA7.5AHM3/I has a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current (IPPM) of 35.4 A, measured using the standardized 10/1000 µs double-exponential waveform. This value ensures downstream components like 5 V microcontrollers or analog sensors remain within safe operating limits during surge events. The P4SMA7.5AHM3/I maintains this clamping performance across its full operating temperature range of –65 °C to +150 °C.
Is P4SMA7.5AHM3/I qualified for automotive applications?
Yes, P4SMA7.5AHM3/I is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and ESD robustness - validating its use in automotive ECUs, body control modules, and ADAS sensor interfaces. The P4SMA7.5AHM3/I also meets J-STD-020 MSL Level 1 for lead-free reflow compatibility.
What does the "HM3" suffix mean in P4SMA7.5AHM3/I?
The "HM3" suffix in P4SMA7.5AHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" denotes the AEC-Q101 grade, "M" signifies halogen-free molding compound, and "3" confirms RoHS compliance. This distinguishes P4SMA7.5AHM3/I from commercial-grade variants (e.g., E3 or M3) and ensures compliance with automotive material restrictions and reliability standards. The P4SMA7.5AHM3/I is supplied in 13" tape-and-reel format (I suffix).
How does P4SMA7.5AHM3/I differ from bidirectional TVS diodes like P4SMA7.5CA?
P4SMA7.5AHM3/I is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., 5 V supply rails), with a cathode band marking the high-side terminal. In contrast, P4SMA7.5CA is bidirectional, symmetric in both directions, and lacks polarity marking - suited for AC-coupled or floating signal lines. The P4SMA7.5AHM3/I offers tighter VBR tolerance (7.13–7.88 V) and lower leakage at VWM versus bidirectional equivalents, optimizing protection efficiency in polarized circuits.
What is the thermal resistance of P4SMA7.5AHM3/I, and how does it affect layout design?
The P4SMA7.5AHM3/I 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 assumes standard JEDEC test conditions and directly impacts power derating: at 85 °C ambient, its usable power must be reduced to ~1.8 W to maintain TJ ≤ 150 °C. Layout best practices for P4SMA7.5AHM3/I include maximizing copper area on both terminals and avoiding thermal isolation - critical for sustained surge duty cycles.
P4SMA7.5AHM3/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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 35.4A
- 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)
P4SMA7.5AHM3/I FAQ
1.How can I place an order for P4SMA7.5AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA7.5AHM3/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 P4SMA7.5AHM3/I reliable?
The price and inventory of P4SMA7.5AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA7.5AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA7.5AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA7.5AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA7.5AHM3/I?
P4SMA7.5AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA7.5AHM3/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 P4SMA7.5AHM3/I?
For technical support, including P4SMA7.5AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA7.5AHM3/I requirements.
6.How does Aetrix verify that P4SMA7.5AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA7.5AHM3/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 P4SMA7.5AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA7.5AHM3/I?
All P4SMA7.5AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA7.5AHM3/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 P4SMA7.5AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA7.5AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA7.5AHM3/I Tags
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