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Vishay General Semiconductor - Diodes Division P4SMA75AHM3/I
- Part No.:
- P4SMA75AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75AHM3/I.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,185
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Product details
Overview
P4SMA75AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 75 V standoff voltage (VWM), 71.3–78.8 V breakdown voltage (VBR) at 1 mA, 104 V maximum clamping voltage at 3.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive-grade industrial power supplies and sensor interfaces.
For engineers reviewing the P4SMA75AHM3/I datasheet, P4SMA75AHM3/I pinout, P4SMA75AHM3/I application, or P4SMA75AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMA (DO-214AC) package dimensions, clamping performance under surge conditions, and direct alternatives for ESD and lightning transient suppression in 12–48 V systems.
Technical Context
The P4SMA75AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to clamp transients. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at 64.1 V), while thermal resistance (RθJA = 120 °C/W) supports operation up to 150 °C junction temperature.
It complies with AEC-Q101 stress testing for automotive applications and meets J-STD-020 MSL Level 1 moisture sensitivity. The device uses a single-diode topology with cathode-band polarity marking and is rated for 40 A non-repetitive forward surge (8.3 ms half-sine), enabling protection of MOSFET gates and DC-DC converter inputs against load dump and inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients without premature triggering. |
| VC (Clamping Voltage) | 104 V at 3.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; enables safe margin for 75 V-rated components. |
| PPPM (Peak Pulse Power) | 400 W - Sustains standardized 10/1000 µs surge energy; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 threats. |
| ID (Reverse Leakage) | <1 µA at VWM - Negligible standby power loss and minimal impact on high-impedance sensor bias networks. |
| TJ max | 150 °C - Enables use in under-hood automotive modules and enclosed industrial enclosures without derating at 85 °C ambient. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD-HBM ≥ 8 kV. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or lower-potential rail; establishes reference for unidirectional clamping action. |
| Cathode | Transient current sink / Clamping output node | Connected to protected line (e.g., 75 V supply rail); conducts surge current to ground when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports repeated surge events in automotive power distribution without degradation; exceeds ISO 16750-2 requirement for 12 V systems. |
| AEC-Q101 qualified (HM3 suffix) | Validated for under-hood and chassis-mounted applications including body control modules and ADAS power domains. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage across temperature (-65 °C to +150 °C) and lifetime cycling. |
| MSL Level 1 (260 °C reflow) | Compatible with standard lead-free SMT assembly processes without preconditioning or special handling. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance for EU automotive OEMs and industrial equipment sold in regulated markets. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects 75 V auxiliary supply rail in BCM against load dump (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input fuse and DC-DC converter input. Use Value: Limits transient voltage to ≤104 V, preventing damage to downstream 80 V-rated MOSFETs and controller ICs. |
Use Scenario: Shields 4–20 mA analog input channel from field-induced surges in factory automation environments. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal line prior to precision op-amp front-end. Use Value: Sub-µA leakage avoids offset error; fast response (<1 ns) prevents latch-up in instrumentation amplifiers. |
| Telecom Remote Radio Unit (RRU) DC Power Feed | Medical Imaging Sensor Bias Supply |
Use Scenario: Safeguards -48 V DC power feed in outdoor RRU cabinets exposed to lightning-induced surges on copper pairs. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy. Use Value: 104 V clamping ensures protected PoE-like interface ICs remain within absolute maximum ratings during 1 kV/0.5 µs transients. |
Use Scenario: Guards high-impedance bias supply (±75 V) for X-ray detector photodiode arrays against ESD and cable coupling. IC Role / Device Role / Timing Role: Low-leakage transient suppressor placed directly at sensor connector entry point. Use Value: <1 µA leakage preserves signal integrity; 150 °C rating supports sterilization-cycle thermal exposure. |
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 RθJA (150 °C/W). | Higher power handling but larger footprint; less suitable for dense automotive PCB layouts. | Select when higher surge margin is needed and board space allows SMB footprint. |
| 1.5SMC75A | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 100 °C/W; heavier lead finish. | Better thermal performance and surge endurance, but incompatible with fine-pitch automated placement. | Prefer for industrial power supplies where manual or selective soldering is acceptable. |
Compared with P4SMA75AHM3/I, SMBJ75A offers greater surge headroom in a slightly larger package, while 1.5SMC75A delivers superior thermal dissipation and ruggedness at the cost of placement compatibility - making P4SMA75AHM3/I optimal for AEC-Q101-compliant, space-constrained SMT designs requiring verified automotive reliability.
Availability
P4SMA75AHM3/I is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog inputs, telecom remote radio units, and medical imaging sensor bias supplies requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA75AHM3/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for AEC-Q101 compliance, low-profile SMT assembly, and consistent clamping performance across temperature and life cycle.
FAQ
What is the clamping voltage of P4SMA75AHM3/I at its rated peak pulse current?
The P4SMA75AHM3/I has a maximum clamping voltage (VC) of 104 V at 3.9 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on the protected circuit during transient events. The P4SMA75AHM3/I maintains this clamping performance across its specified operating temperature range and is validated per AEC-Q101 for automotive use cases.
Is P4SMA75AHM3/I qualified for automotive applications?
Yes, P4SMA75AHM3/I is AEC-Q101 qualified - confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body model ESD (≥8 kV). The P4SMA75AHM3/I is approved for use in body control modules, infotainment power rails, and ADAS subsystems where reliability under thermal and electrical stress is critical.
What does the "HM3" suffix mean in P4SMA75AHM3/I?
The "HM3" suffix in P4SMA75AHM3/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and packaging in 13-inch tape-and-reel (I). It distinguishes the part from commercial-grade variants (E3/M3) and confirms compliance with automotive material standards, including JESD201 Class 2 whisker resistance and UL 94 V-0 flammability. The P4SMA75AHM3/I is intended for high-reliability deployments where regulatory and environmental requirements are stringent.
Can P4SMA75AHM3/I be used in bidirectional configurations?
No, P4SMA75AHM3/I is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in the part number. Bidirectional variants (e.g., P4SMA75CA) are required for AC-coupled or symmetrical transient protection. Using P4SMA75AHM3/I in reverse-biased AC applications would result in forward conduction and failure. The P4SMA75AHM3/I must be oriented with cathode toward the protected line and anode to ground for proper operation.
What is the maximum operating temperature for P4SMA75AHM3/I?
The P4SMA75AHM3/I has a maximum junction temperature (TJ max) of +150 °C and operates across a storage and junction temperature range of -65 °C to +150 °C. Its thermal resistance (RθJA = 120 °C/W) allows reliable function in under-hood automotive environments and sealed industrial enclosures. Derating curves in the datasheet confirm sustained 400 W pulse capability down to +125 °C ambient when mounted on recommended 5.0 mm × 5.0 mm copper pads - a key specification for the P4SMA75AHM3/I in thermally demanding applications.
P4SMA75AHM3/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):
- 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/I FAQ
1.How can I place an order for P4SMA75AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75AHM3/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 P4SMA75AHM3/I reliable?
The price and inventory of P4SMA75AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA75AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75AHM3/I?
P4SMA75AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75AHM3/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 P4SMA75AHM3/I?
For technical support, including P4SMA75AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75AHM3/I requirements.
6.How does Aetrix verify that P4SMA75AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA75AHM3/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 P4SMA75AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA75AHM3/I?
All P4SMA75AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75AHM3/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 P4SMA75AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA75AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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