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Vishay General Semiconductor - Diodes Division P4SMA75CAHM3_A/I
- Part No.:
- P4SMA75CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CAHM3_A/I.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,386
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Product details
Overview
P4SMA75CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 75 V standoff voltage (VWM), 82.5 V minimum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It delivers clamping voltage of 104 V at 3.9 A peak pulse current and is AEC-Q101 qualified for automotive-grade surge protection on signal lines and power rails.
For engineers reviewing the P4SMA75CAHM3_A/I datasheet, P4SMA75CAHM3_A/I pinout, P4SMA75CAHM3_A/I application, or P4SMA75CAHM3_A/I equivalent, this device is selected for robust ESD and lightning transient suppression in automotive sensor interfaces, industrial I/O modules, and telecom line protection where bidirectional clamping, low leakage (<1 µA at 64.1 V), and MSL Level 1 reflow compatibility are required.
Technical Context
The P4SMA75CAHM3_A/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±82.5 V (VBR min) while maintaining ≤64.1 V reverse standoff (VWM) under normal operation. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for unclamped transient energy absorption, it handles 3.9 A peak pulse current (IPPM) with 104 V clamping voltage (VC) under 10/1000 µs waveform, and sustains 3.3 W steady-state power dissipation at 50 °C ambient. Thermal resistance is 120 °C/W junction-to-ambient, requiring minimal copper pad area (0.2" × 0.2") for full 400 W rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Symmetrical avalanche onset range in both directions; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 104 V at IPPM = 3.9 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines maximum stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Transient energy-handling capability; derates to 300 W above 91 V per spec, but P4SMA75CAHM3_A/I remains at full 400 W rating. |
| ID (Reverse Leakage) | <1 µA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free, RoHS-compliant, AEC-Q101 grade. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Meets UL 94 V-0 flammability rating and J-STD-002/JESD 22-B102 solderability standards. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative surge) | Conducts during negative-going transients; forms symmetrical path with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive surge) | Conducts during positive-going transients; paired with anode to enable full-cycle voltage limiting without external polarity constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, sensor bridges) without polarity concerns. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 50 Ω lines when properly laid out; supports industrial and automotive surge immunity requirements. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling; eliminates bake-out step in production. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage overshoot during fast transients; improves protection margin for 3.3 V/5 V logic and analog front-ends. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance for global automotive OEMs and industrial equipment exporters; traceable material categorization per Vishay Doc. 99912. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
|
Use Scenario: Protecting MEMS pressure sensor outputs in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair (e.g., LIN or SENT output) to clamp ±100 V transients without distorting DC bias. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC drivers while maintaining <1 µA leakage at 64.1 V standoff. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS on A/B bus lines to limit common-mode transients to ≤104 V, preserving signal integrity up to 10 Mbps. Use Value: Enables compliance with IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-5 (1 kV surge) without additional series impedance or filtering. |
| Telecom Line Card Protection | Consumer USB Port ESD |
|
Use Scenario: Safeguarding Ethernet PHY interface pins on VoIP gateway line cards against induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed at connector entry point to shunt transients before reaching magnetics and PHY IC. Use Value: Clamps 10/1000 µs surges to 104 V while adding <0.5 pF parasitic capacitance-no data rate degradation at 100BASE-TX speeds. |
Use Scenario: Hardening USB 2.0 D+/D− lines in smart home hubs against human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) bidirectional suppressor placed adjacent to USB connector to divert ESD current away from USB controller ESD diodes. Use Value: Achieves >30 kV air discharge robustness per IEC 61000-4-2 due to low dynamic impedance and symmetrical clamping behavior. |
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 (64.1 V) and VC (104 V), but SMB package (DO-214AA); 600 W PPPM rating; higher thermal mass. | Better suited for higher-power or board-space-constrained layouts where larger pad area is acceptable; less optimal for ultra-thin modules. | Select SMBJ75CA when PCB layout allows larger footprint and higher surge margin is needed beyond 400 W. |
| 1.5SMC75CA | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 30 °C/W vs. 120 °C/W for P4SMA75CAHM3_A/I. | Used in high-reliability power supply inputs or telecom base stations where sustained surge duty cycles demand lower thermal resistance. | Choose 1.5SMC75CA only when system-level thermal design supports larger package and 1500 W rating is required. |
Compared with SMBJ75CA and 1.5SMC75CA, P4SMA75CAHM3_A/I offers the smallest footprint (SMA), AEC-Q101 qualification, and MSL Level 1 compatibility-making it the preferred choice for space-limited automotive and portable industrial designs where 400 W clamping suffices and reflow process control is critical.
Availability
P4SMA75CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interfaces, and telecom line card surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA75CAHM3_A/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 passive components 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 systems-delivering consistent clamping performance, AEC-Q101 qualification, and tight parametric control across voltage grades.
FAQ
What is the clamping voltage of P4SMA75CAHM3_A/I at its rated peak pulse current?
The P4SMA75CAHM3_A/I has a maximum clamping voltage (VC) of 104 V at 3.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88367 and defines the upper voltage limit imposed on protected circuits during surge events. The clamping occurs symmetrically in both directions due to its bidirectional construction.
Is P4SMA75CAHM3_A/I suitable for automotive applications?
Yes, P4SMA75CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade reliability. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it appropriate for under-hood and cabin ECUs, ADAS sensors, and infotainment interfaces where transient immunity is critical.
What does the "CA" suffix mean in P4SMA75CAHM3_A/I?
The "CA" suffix in P4SMA75CAHM3_A/I explicitly denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA75AHM3_A/I), the CA version provides symmetrical clamping for both positive- and negative-polarity transients-ideal for AC-coupled lines, differential buses like CAN or RS-485, and floating sensor outputs where polarity cannot be assumed.
What is the maximum operating temperature for P4SMA75CAHM3_A/I?
The P4SMA75CAHM3_A/I has a maximum junction temperature (TJ max) of +150 °C and an operating junction/storage temperature range of –65 °C to +150 °C. This rating supports deployment in harsh environments such as automotive engine compartments, industrial motor drives, and outdoor telecom equipment, provided PCB thermal design maintains junction temperature within limits using the specified 0.2" × 0.2" copper pads.
How does the HM3 suffix affect P4SMA75CAHM3_A/I's compliance status?
The HM3 suffix in P4SMA75CAHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It meets JESD201 Class 2 whisker resistance, UL 94 V-0 flammability, and Vishay's material categorization per Doc. 99912. This makes P4SMA75CAHM3_A/I acceptable for global automotive Tier 1 suppliers and industrial OEMs requiring full environmental and reliability documentation.
P4SMA75CAHM3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for P4SMA75CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CAHM3_A/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 P4SMA75CAHM3_A/I reliable?
The price and inventory of P4SMA75CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA75CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CAHM3_A/I?
P4SMA75CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CAHM3_A/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 P4SMA75CAHM3_A/I?
For technical support, including P4SMA75CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA75CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA75CAHM3_A/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 P4SMA75CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA75CAHM3_A/I?
All P4SMA75CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CAHM3_A/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 P4SMA75CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA75CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA75CAHM3_A/I Tags
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