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Vishay General Semiconductor - Diodes Division P4SMA75CAHM3/H
- Part No.:
- P4SMA75CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CAHM3/H.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,572
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Product details
Overview
P4SMA75CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 75 V standoff voltage (VWM), 82.9 V minimum breakdown voltage (VBR), 104 V maximum clamping voltage (VC) at 3.9 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and communication lines in automotive and industrial control systems.
For engineers reviewing the P4SMA75CAHM3/H datasheet, P4SMA75CAHM3/H pinout, P4SMA75CAHM3/H application, or P4SMA75CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA75CAHM3/H operates as a voltage-clamping device that conducts above its breakdown threshold to shunt transient energy away from protected circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its glass-passivated junction ensures stable leakage performance under thermal stress.
It delivers 400 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derating linearly above 25 °C (per Fig. 2), with clamping voltage tightly bounded at ≤104 V up to 3.9 A IPPM. The device meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 82.9–91.6 V at IT = 1 mA - Voltage at which device enters avalanche region; ensures reliable triggering during transients. |
| VC (Clamping Voltage) | 104 V at IPPM = 3.9 A - Maximum voltage seen by protected circuit during worst-case surge; critical for IC-level overvoltage immunity. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Surge energy-handling capacity; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) line surges. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMA (DO-214AC) - Standardized SMT footprint (5.0 mm × 5.0 mm copper pad layout); compatible with JEDEC-compliant reflow profiles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H). Matte tin-plated terminals, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Conducts during positive or negative voltage excursions beyond VBR; symmetric with cathode for AC protection. |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or return rail during overvoltage events; no band marking on bidirectional variants. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - required for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 - supports green manufacturing and high-reliability reflow without corrosion risk. |
| 400 W peak pulse power (10/1000 µs) | Handles repetitive surge events up to 0.01% duty cycle - suitable for industrial motor drives and telecom line cards with frequent switching noise. |
| Low clamping ratio (VC/VBR ≈ 1.25) | Minimizes overvoltage overshoot during fast transients - protects 75 V-rated MOSFETs and analog front-ends without derating headroom. |
| Fast response time (< 1 ns) | Activates before most semiconductor damage thresholds are exceeded - essential for safeguarding high-speed data lines and precision sensors. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed across differential signal pairs or supply rails to limit transient voltage to safe levels. Use Value: Enables robust operation per ISO 7637-2 Pulse 1/2a/5a requirements while maintaining signal fidelity due to low capacitance and leakage. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against ESD, lightning-induced surges, and relay contact bounce in factory automation. IC Role / Device Role / Timing Role: Standoff-connected TVS on field-side signal lines to clamp transients before they reach isolation barriers or microcontroller GPIOs. Use Value: Prevents latch-up and permanent damage in 24 V DC I/O modules without adding propagation delay or signal distortion. |
| Telecom Line Interface | Consumer Power Adapter Protection |
Use Scenario: Shielding Ethernet PHYs, RS-485 transceivers, and PoE injectors from induced surges on long cable runs in building infrastructure. IC Role / Device Role / Timing Role: Primary-level TVS on unshielded twisted-pair (UTP) lines, coordinated with secondary GDT or MOV stages. Use Value: Limits let-through voltage to <104 V during 10/1000 µs surges - within safe operating area of 100BASE-TX and IEEE 802.3af components. |
Use Scenario: Secondary-side overvoltage suppression on 5–24 V DC outputs of wall adapters and USB-C PD chargers exposed to user-handling ESD. IC Role / Device Role / Timing Role: Final-stage TVS between output capacitor and connector to absorb residual transients escaping primary-side filtering. Use Value: Maintains UL/IEC 62368-1 compliance with <1 µA leakage at rated output voltage and zero impact on regulation stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VWM (75 V) and VC (104 V), but SMB package (DO-214AA); 600 W PPPM rating; higher RθJA (100 °C/W). | Larger footprint; better suited for higher-power surges where board space allows; less dense placement than SMA. | Select SMBJ75CA when surge energy exceeds 400 W or thermal management requires lower junction-to-ambient resistance. |
| 1.5SMC75CA | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 40 °C/W; larger case (7.11 mm × 6.22 mm). | Designed for high-energy industrial mains protection; incompatible with fine-pitch SMT lines; requires larger copper pour. | Choose 1.5SMC75CA only for legacy designs requiring >1 kW surge handling or where existing SMC footprints exist. |
Compared with SMBJ75CA and 1.5SMC75CA, the P4SMA75CAHM3/H offers optimal balance of compact size, AEC-Q101 qualification, and 400 W surge capability - making it ideal for space-constrained automotive and portable industrial modules where MSL Level 1 reflow and halogen-free compliance are mandatory.
Availability
P4SMA75CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection circuits, and consumer power adapter secondary-side surge suppression requiring stable component supply across production lifecycles.
Supply support for P4SMA75CAHM3/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series is engineered for high-volume surface-mount transient suppression in automotive, industrial, and communications equipment - prioritizing AEC-Q101 qualification, tight parametric tolerances, and consistent surge performance across temperature.
FAQ
What is the clamping voltage of the P4SMA75CAHM3/H under maximum rated surge current?
The P4SMA75CAHM3/H exhibits a maximum clamping voltage (VC) of 104 V when subjected to its rated peak pulse current (IPPM) of 3.9 A using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream circuit overvoltage margining. The P4SMA75CAHM3/H maintains this clamping performance with minimal degradation after repeated surge events, supporting long-term reliability in cyclic industrial environments.
Is the P4SMA75CAHM3/H suitable for automotive applications?
Yes, the P4SMA75CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It operates across –65 °C to +150 °C junction temperature and meets MSL Level 1 for lead-free reflow. The P4SMA75CAHM3/H is deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity to load dump and ISO 7637-2 pulses is required.
How does the bidirectional design of the P4SMA75CAHM3/H affect its circuit implementation?
The bidirectional configuration of the P4SMA75CAHM3/H allows it to suppress voltage transients of either polarity without regard to orientation - ideal for protecting AC-coupled signals, differential buses (e.g., RS-485, CAN), or ungrounded power rails. Unlike unidirectional TVS diodes, the P4SMA75CAHM3/H has no cathode marking and must be placed symmetrically across the protected node pair. This simplifies layout and eliminates polarity-related assembly errors.
What is the thermal resistance of the P4SMA75CAHM3/H, and how does it impact PCB layout?
The P4SMA75CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges, designers must allocate adequate copper area and avoid excessive trace length between the P4SMA75CAHM3/H and ground planes. Thermal derating curves (Fig. 2) require adjustment of IPPM if ambient temperature exceeds 25 °C.
Does the P4SMA75CAHM3/H meet industry standards for flammability and solderability?
Yes, the P4SMA75CAHM3/H uses molding compound compliant with UL 94 V-0 flammability rating and matte tin-plated leads qualified per J-STD-002 and JESD 22-B102 for solderability. Its terminals also pass JESD 201 Class 2 whisker testing. These certifications ensure process compatibility with high-reliability automated assembly lines and compliance with safety standards including IEC 62368-1 and UL 60950-1 for end equipment.
P4SMA75CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA75CAHM3/H FAQ
1.How can I place an order for P4SMA75CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CAHM3/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 P4SMA75CAHM3/H reliable?
The price and inventory of P4SMA75CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA75CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CAHM3/H?
P4SMA75CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CAHM3/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 P4SMA75CAHM3/H?
For technical support, including P4SMA75CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CAHM3/H requirements.
6.How does Aetrix verify that P4SMA75CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA75CAHM3/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 P4SMA75CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA75CAHM3/H?
All P4SMA75CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CAHM3/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 P4SMA75CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA75CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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