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Taiwan Semiconductor Corporation P4SMA75CH
- Part No.:
- P4SMA75CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CH.pdf
- Description:
- 400W, 75V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,101
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Product details
Overview
P4SMA75CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 75V breakdown voltage (min 67.5V, max 82.5V), and clamping voltage of 108V at 3.8A 10/1000μs surge. It protects DC/DC converters and automotive power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA75CH datasheet, P4SMA75CH pinout, P4SMA75CH application, or P4SMA75CH equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, moisture sensitivity level (MSL 1), and bidirectional TVS behavior confirmed for automotive-grade ESD and load-dump protection.
Technical Context
The P4SMA75CH operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling robust protection of differential or AC-coupled signal/power lines without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low leakage (<1µA at 60.7V), and fast response (<1.0ps).
Designed per ANSI/IEEE C62.35, it sustains 400W peak pulse power under 10/1000μs waveform, derates linearly above 25°C ambient, and maintains clamping voltage ≤108V up to its rated IPPM - critical for safeguarding 72V nominal automotive systems during load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=1mA | 67.5–82.5V: Ensures reliable turn-on before downstream IC damage in 72V rail applications |
| VWM | 60.7V: Maximum continuous reverse voltage without significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | 108V at 3.8A (10/1000μs): Clamps surge energy within safe limits for 100V-rated components |
| PPPM | 400W: Sustains high-energy transients per ISO 7637-2 Pulse 5a (load dump) |
| IR @ VWM | <1µA: Minimizes standby power loss and avoids false triggering in low-current sensing circuits |
| TJ Range | −55°C to +150°C: Supports under-hood automotive deployment without thermal derating penalties |
| Package | DO-214AC (SMA): Industry-standard SMT footprint compatible with automated placement and reflow |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; bidirectional symmetry means no anode/cathode orientation required - terminals are functionally identical for transient suppression in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient current input/output node | Accepts bidirectional surge current; connects across protected line and ground or differential pair |
| Terminal 2 | Transient current input/output node | Completes low-inductance path for clamped energy; no polarity assignment required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift over 15-year vehicle lifetime |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely before reflow without baking |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 72V battery-fed ECUs against load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at power entry point to shunt >400W surge energy before upstream regulators. Use Value: Limits voltage excursion to ≤108V, preventing latch-up or gate oxide rupture in 100V MOSFETs and PMICs. | Use Scenario: Input-side surge suppression in isolated 48V-to-12V industrial DC/DC modules exposed to switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Fast-clamping element across primary-side bus to absorb 10/1000μs transients without affecting regulation loop stability. Use Value: Maintains system uptime by eliminating reset events caused by transient-induced brownouts in microcontroller supervisors. |
| LED Driver Power Stages | On-Board Charger (OBC) Control Circuits |
Use Scenario: Overvoltage protection for constant-current LED drivers in streetlight and automotive headlamp systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp inductive kickback from long cable runs. Use Value: Prevents catastrophic failure of LED strings and driver ICs during hot-plug or short-circuit recovery events. | Use Scenario: Signal-level protection for CAN and analog sensor interfaces inside EV on-board chargers subjected to conducted emissions. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on isolated communication lines to suppress ESD and burst noise without distorting data integrity. Use Value: Enables uninterrupted charging session handshaking by maintaining <1µA leakage and sub-1ps response during ±8kV contact ESD events. |
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 | 600W rating, SMB package (larger footprint), higher IPPM (6.4A), VC = 121V | Better suited for higher-energy transients but requires PCB area increase and may overclamp sensitive 100V devices | Select when surge energy exceeds 400W or when legacy SMB layout exists |
| 1.5KE75CA | 1500W rating, axial DO-201 package, VC = 121V, leaded through-hole mounting | Not suitable for automated SMT production; used only in prototyping or repair scenarios where rework is acceptable | Choose only for manual assembly or field-replaceable modules with through-hole constraints |
Compared with SMBJ75CA and 1.5KE75CA, the P4SMA75CH provides optimal balance of 400W surge handling, DO-214AC SMT compatibility, and tight 108V clamping - making it ideal for space-constrained automotive and industrial DC/DC designs requiring AEC-Q101 validation and MSL-1 reliability.
Availability
P4SMA75CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, and LED driver protection requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for P4SMA75CH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P4SMA75CH belongs to TSC's AEC-Q101-qualified P4SMAxH series - engineered specifically for bidirectional transient suppression in harsh-environment 12V–72V automotive subsystems and high-efficiency industrial power conversion stages.
FAQ
What does the "CH" suffix indicate in P4SMA75CH?
The "CH" suffix in P4SMA75CH denotes a bidirectional configuration with symmetrical clamping characteristics in both polarities, validated per ANSI/IEEE C62.35. Unlike unidirectional variants (e.g., P4SMA75H), the P4SMA75CH has no cathode marking and functions identically regardless of voltage polarity - essential for protecting AC-coupled or floating power domains. This is explicitly defined in TSC's ordering information and electrical specifications.
Is P4SMA75CH compliant with AEC-Q101, and what tests does that include?
Yes, P4SMA75CH is AEC-Q101 qualified. Certification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling (TC), highly accelerated stress test (HAST), and human-body-model ESD (≥8kV contact). These validate long-term reliability under automotive under-hood conditions - −55°C to +150°C operation, humidity exposure, and repeated thermal shock - all confirmed in TSC's official qualification report A2102.
What is the maximum clamping voltage of P4SMA75CH, and how is it measured?
The maximum clamping voltage of P4SMA75CH is 108V, measured at IPPM = 3.8A under the standardized 10/1000μs double-exponential surge waveform (per REA definition). This value is guaranteed across the full operating temperature range and represents the peak voltage seen by downstream circuitry during worst-case transient events - critical for ensuring compatibility with 100V-rated MOSFETs and controllers in 72V systems.
Does P4SMA75CH require special PCB layout considerations compared to unidirectional TVS diodes?
No special layout is needed beyond standard high-current TVS practices: minimize trace inductance with short, wide traces to ground and place P4SMA75CH as close as possible to the protected node. Because P4SMA75CH is bidirectional, there is no polarity constraint - unlike unidirectional variants (e.g., P4SMA75H), no cathode alignment is required. Its DO-214AC footprint matches industry-standard SMA pads, supporting drop-in replacement in existing layouts designed for bidirectional TVS devices.
How does P4SMA75CH perform under ISO 7637-2 Pulse 5a (load dump) conditions?
P4SMA75CH is explicitly rated to meet ISO 7637-2 Pulse 5a (load dump) requirements when used with appropriate series impedance. With its 400W peak pulse rating and 108V clamping voltage, it limits the 120V/350ms load dump spike to safe levels for 100V-rated components. TSC's datasheet confirms compliance across Pulses 1, 2a, 2b, 3a, and 3b - validated using the 10/1000μs test waveform and derated per Figure 2 for ambient temperatures above 25°C.
P4SMA75CH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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)
P4SMA75CH FAQ
1.How can I place an order for P4SMA75CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CH 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 P4SMA75CH reliable?
The price and inventory of P4SMA75CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA75CH is usually 5 days.
3.What payment methods are accepted for P4SMA75CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CH?
P4SMA75CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CH 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 P4SMA75CH?
For technical support, including P4SMA75CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CH requirements.
6.How does Aetrix verify that P4SMA75CH is sourced from the original manufacturer or authorized distributors?
All P4SMA75CH 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 P4SMA75CH meets industry standards.
7.What is the process for return or replacement of P4SMA75CH?
All P4SMA75CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CH, 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 P4SMA75CH part is unused and in its original packaging.
Return procedure for P4SMA75CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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