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Taiwan Semiconductor Corporation P4SMA75AH
- Part No.:
- P4SMA75AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75AH.pdf
- Description:
- TVS DIODE 64.1VWM 103VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,668
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Product details
Overview
P4SMA75AH from Taiwan Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 71.3–78.8V breakdown voltage at 1mA, 64.1V working stand-off voltage, and clamps to ≤103V at 4.0A 10/1000μs surge. It is AEC-Q101 qualified and used for automotive and industrial DC/DC converter overvoltage protection.
For engineers reviewing the P4SMA75AH datasheet, P4SMA75AH pinout, P4SMA75AH application, or P4SMA75AH equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, leakage current at operating bias, AEC-Q101 qualification status, DO-214AC thermal performance under repetitive surge, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b.
Technical Context
The P4SMA75AH employs a glass-passivated silicon junction optimized for fast transient suppression, with typical response time under 1.0ps and maximum reverse leakage of 1μA at 64.1V. Its unidirectional configuration provides forward conduction path during negative transients only when used with proper polarity alignment.
Designed for automotive-grade reliability, it operates across –55°C to +150°C junction temperature range, meets JESD201 Class 2 whisker resistance, and is moisture-sensitive Level 1 per J-STD-020 - enabling direct placement without bake-out prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 71.3–78.8V: Ensures reliable triggering above system nominal 60V rail while avoiding false trips during normal operation. |
| VWM | 64.1V: Maximum continuous reverse voltage before significant leakage; sets upper limit for compatible supply rails. |
| VC @ IPPM=4.0A | ≤103V: Clamped voltage during 10/1000μs surge; must remain below protected device absolute maximum rating. |
| IR @ VWM | ≤1μA: Ultra-low leakage preserves battery life and avoids loading in high-impedance sensing circuits. |
| PPPM | 400W: Peak pulse power handling capability per single 10/1000μs waveform per JEDEC standards. |
| TJ max | +150°C: Enables use in under-hood automotive environments and thermally constrained PCB layouts. |
| Package | DO-214AC (SMA): Standardized surface-mount outline with 0.060g mass and UL 94V-0 molding compound. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; polarity indicated by cathode band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-side reference; completes clamping loop during positive transients. |
| Cathode | Reverse-biased terminal / Clamping node | Connected to protected line (e.g., 60V rail); conducts when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, ESD, and mechanical shock. |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal cycling and humidity exposure. |
| Fast response time <1.0ps | Clamps sub-nanosecond transients before sensitive downstream circuitry experiences overstress. |
| ISO 7637-2 compliance | Withstands standardized automotive load dump and switching surge waveforms (Pulse 1/2a/2b/3a/3b). |
| Moisture sensitivity level 1 | Zero bake requirement before SMT reflow; supports high-yield automated assembly without process interruption. |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side synchronous rectifier controllers against flyback-induced voltage spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input bus or controller supply pins to clamp overshoot during switching transitions. Use Value: Limits transient voltage to ≤103V, preventing latch-up or oxide breakdown in 65V-rated gate drivers and logic ICs. | Use Scenario: Overvoltage suppression on 48V-to-12V or 60V-to-5V buck converter inputs in vehicle infotainment and ADAS modules. IC Role / Device Role / Timing Role: Standoff protection element placed upstream of DC/DC controller ICs to absorb ISO 7637-2 Pulse 1 (inductive load dump) energy. Use Value: Withstands 400W peak pulses without degradation, maintaining <1μA leakage at 64.1V to avoid regulator instability. |
| Automotive Lighting Module | Industrial Adapter Input Stage |
Use Scenario: Guarding LED driver ICs and CAN transceivers in headlamp control units exposed to alternator load dump events. IC Role / Device Role / Timing Role: Primary-level transient suppressor on main 60V supply rail, coordinated with downstream ceramic capacitors for sub-μs response. Use Value: AEC-Q101 qualification ensures reliability across –40°C to +125°C ambient, with clamping voltage margin >15V below driver IC absolute max rating. | Use Scenario: Input-stage surge protection in universal-input AC/DC adapters powering industrial sensors and PLC I/O modules. IC Role / Device Role / Timing Role: First-line defense against line transients entering via IEC 61000-4-5 Level 3 surges on DC output lines. Use Value: 400W rating handles 2kV/1kA combination wave surges; DO-214AC package enables compact layout with minimal trace inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Same 75V nominal, but SMB package (DO-214AA); 600W peak power; higher thermal mass. | Higher power handling suits higher-energy surges; larger footprint may conflict with dense layouts. | Select SMBJ75A only if board space allows and surge energy exceeds 400W capability of P4SMA75AH. |
| 1.5SMC75A | Same 75V rating, but SMC package (DO-214AB); 1500W peak power; higher IPPM (21.7A). | Designed for mains-connected equipment; not AEC-Q101 qualified; unsuitable for automotive. | Choose 1.5SMC75A for industrial AC/DC front-end protection where automotive qualification is unnecessary. |
Compared with SMBJ75A and 1.5SMC75A, the P4SMA75AH offers optimal balance of AEC-Q101 compliance, DO-214AC footprint efficiency, and 400W surge capacity - making it the preferred choice for space-constrained automotive DC/DC and lighting modules requiring validated reliability.
Availability
P4SMA75AH is available at Aetrix Electronics and suitable for automotive lighting modules, on-board DC/DC converters, and industrial adapter input stages requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA75AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The P4SMA75AH belongs to TSC's AEC-Q101-qualified P4SMAx(A)H series - engineered specifically for robust transient suppression in automotive power systems and harsh-environment industrial electronics.
FAQ
What is the clamping voltage of the P4SMA75AH under a 10/1000μs surge?
The P4SMA75AH has a maximum clamping voltage (VC) of 103V when subjected to a 4.0A peak impulse current with a 10/1000μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA75AH maintains this clamping performance across its full operating temperature range of –55°C to +150°C.
Is the P4SMA75AH suitable for bidirectional transient protection?
No, the P4SMA75AH is a unidirectional TVS diode and is not rated for bidirectional operation. For bidirectional protection in the same voltage range, Taiwan Semiconductor specifies the P4SMA75CAH variant (with "CAH" suffix). Using the P4SMA75AH in reverse-biased configurations risks exceeding its maximum reverse voltage rating and may lead to premature failure. Always verify polarity alignment in schematic and layout for the P4SMA75AH.
Does the P4SMA75AH meet automotive qualification standards?
Yes, the P4SMA75AH is AEC-Q101 qualified and additionally meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electrical disturbances. Its construction includes glass-passivated junctions, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 - all supporting reliable deployment in engine control units, body electronics, and ADAS subsystems where long-term field reliability is mandatory.
What is the maximum reverse leakage current of the P4SMA75AH at its working voltage?
The P4SMA75AH exhibits a maximum reverse leakage current (IR) of 1μA when biased at its working stand-off voltage (VWM) of 64.1V. This ultra-low leakage ensures minimal power loss in always-on systems and prevents interference with high-impedance monitoring circuits. The specification is guaranteed at TA = 25°C and remains within 5× this value across the full –55°C to +150°C junction temperature range.
What package type does the P4SMA75AH use, and what are its key mechanical attributes?
The P4SMA75AH uses the DO-214AC (SMA) surface-mount package: a compact, rectangular molded case with cathode band polarity marking, matte tin-plated leads compliant with J-STD-002, and UL 94V-0 flammability rating. Its mass is approximately 0.060g, and it supports automated placement without pre-bake due to moisture sensitivity level 1 per J-STD-020. The package dimensions align with standard SMA footprints for seamless PCB integration.
P4SMA75AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA75AH FAQ
1.How can I place an order for P4SMA75AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75AH 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 P4SMA75AH reliable?
The price and inventory of P4SMA75AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75AH is usually 5 days.
3.What payment methods are accepted for P4SMA75AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75AH?
P4SMA75AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75AH 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 P4SMA75AH?
For technical support, including P4SMA75AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75AH requirements.
6.How does Aetrix verify that P4SMA75AH is sourced from the original manufacturer or authorized distributors?
All P4SMA75AH 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 P4SMA75AH meets industry standards.
7.What is the process for return or replacement of P4SMA75AH?
All P4SMA75AH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75AH, 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 P4SMA75AH part is unused and in its original packaging.
Return procedure for P4SMA75AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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