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Taiwan Semiconductor Corporation P4SMA39CA
- Part No.:
- P4SMA39CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA39CA.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
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Product details
Overview
P4SMA39CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power at 10/1000μs waveform, with a working stand-off voltage of 33.3V, breakdown voltage range 37.1–41.0V at 1mA, and clamping voltage of 53.9V at 7.7A. It protects DC/DC converters and automotive power supplies against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA39CA datasheet, P4SMA39CA pinout, P4SMA39CA application, or P4SMA39CA equivalent, key selection criteria include bidirectional clamping capability, sub-1ps response time, <1μA reverse leakage at VWM, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance - all critical for robust overvoltage protection in space-constrained industrial and automotive PCBs.
Technical Context
The P4SMA39CA implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. Its design supports unidirectional or bidirectional operation (denoted by "CA" suffix), with symmetrical electrical characteristics in both polarities per ANSI/IEEE C62.35 standards.
It operates across –55°C to +150°C junction temperature range, features moisture sensitivity level 1 (J-STD-020), and uses matte tin-plated leads compliant with J-STD-002 solderability requirements - enabling compatibility with lead-free reflow and automated placement processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - Maximum continuous reverse operating voltage before significant leakage; ensures stable standby operation in 24–32V systems |
| VBR min/max | 37.1 / 41.0 V @ 1 mA - Breakdown voltage window defines reliable turn-on threshold under surge conditions |
| VC @ IPPM | 53.9 V @ 7.7 A (10/1000μs) - Clamping voltage limits downstream component stress during 400W transient events |
| PPPM | 400 W - Peak pulse power rating determines survivability against standardized automotive load-dump and inductive-switching surges |
| IR @ VWM | <1 μA - Ultra-low leakage preserves efficiency in always-on power rails and battery-backed circuits |
| Response time | <1.0 ps - Enables suppression of ESD and fast-rising transients before sensitive ICs experience damage |
| TJ max | +150 °C - Supports operation in under-hood automotive environments and high-power industrial enclosures |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode band marking; dual-terminal configuration; 0.060g mass; UL 94V-0 flammability-rated epoxy body; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reverse-bias reference for bidirectional clamping | Connected to protected line (e.g., CAN_H or +12V rail); polarity-independent due to CA symmetry |
| Cathode | Current exit terminal in forward bias; marked with band on package | Provides visual orientation for manual inspection; ties to ground or return path in clamp-to-rail or clamp-to-ground topologies |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Electrical symmetry in both directions enables single-device protection of AC-coupled or floating differential lines without polarity concerns |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated performance against automotive transient pulses 1, 2a, 2b, 3a, and 3b - eliminates need for additional external filtering in vehicle ECUs |
| J-STD-020 Level 1 MSL | Zero bake requirement prior to reflow; supports standard SMT assembly without moisture-related popcorning risk |
| Halogen-free construction | Meets IEC 61249-2-21 for environmentally compliant manufacturing and end-of-life processing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12V/24V supply inputs in BCMs exposed to load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional TVS clamps voltage spikes to ≤53.9V during 400W surges, shielding MCU power rails and CAN transceivers. Use Value: Eliminates need for series ferrites or RC filters while maintaining <1μA standby leakage - preserving low-power sleep mode integrity. | Use Scenario: Shields 24V digital input channels from field-wiring induced surges and relay coil flyback in factory automation cabinets. IC Role / Device Role / Timing Role: Fast-clamping device placed at connector entry point, limiting transient energy before optocoupler or Schmitt-trigger input stage. Use Value: Withstands ≥7.7A impulse current at 10/1000μs without degradation, ensuring >100,000 surge cycles per IEC 61000-4-5. |
| On-board DC/DC Converter Input | LED Driver Power Stage |
Use Scenario: Guards buck converter input stage in telecom power modules subjected to hot-swap and backplane transients. IC Role / Device Role / Timing Role: Standoff voltage (33.3V) aligns with 28–32V nominal input range; clamps to 53.9V to prevent MOSFET gate oxide failure. Use Value: Sub-1ps response ensures clamping initiates before controller IC sees overvoltage - avoiding latch-up or reset events. | Use Scenario: Protects constant-current LED driver ICs from inductive kickback during PWM dimming in streetlight ballasts. IC Role / Device Role / Timing Role: Placed across input capacitor terminals to absorb energy from boost inductor flyback during switch-off transitions. Use Value: 400W peak power rating handles repetitive 10/1000μs surges up to 100Hz without thermal runaway - verified per Fig.2 derating curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | 600W PPPM, DO-214AA (SMB) package, VWM = 36V, VC = 58.1V @ 10.3A | Higher power handling but larger footprint; better suited for 48V systems with higher surge margins | Select when system-level surge testing exceeds 400W or board layout allows SMB size |
| 1.5KE39CA | 1500W PPPM, DO-201AD (Axial) package, VWM = 33.3V, VC = 60.2V @ 24.9A | Through-hole mounting; higher thermal mass but incompatible with automated SMT lines | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ36CA and 1.5KE39CA, the P4SMA39CA offers optimal balance of 400W surge capability, DO-214AC compactness, and full SMT manufacturability - making it preferred for space-constrained 24V automotive and industrial modules requiring J-STD-020 Level 1 assembly.
Availability
P4SMA39CA is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, and on-board DC/DC converter input stages requiring stable component supply across multi-year production cycles.
Supply support for P4SMA39CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs since 1979.
The P4SMA39CA belongs to TSC's P4SMAx(A) family of surface-mount TVS diodes engineered specifically for ISO 7637-2-compliant automotive and industrial transient suppression - emphasizing reliability, automated assembly readiness, and tight parametric consistency.
FAQ
What is the polarity configuration of the P4SMA39CA?
The P4SMA39CA is a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both forward and reverse directions, with identical VBR, VC, and IR specifications across polarity - enabling use in AC-coupled interfaces or floating power domains without orientation constraints. This differs from unidirectional variants like P4SMA39A, which require correct anode/cathode placement relative to ground.
Does the P4SMA39CA meet automotive qualification standards?
Yes, the P4SMA39CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements, and is rated for operation from –55°C to +150°C junction temperature - satisfying AEC-Q101 stress test conditions for discrete semiconductors. Its J-STD-020 Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance further support automotive-grade reliability in engine bay and chassis-mounted modules.
What is the maximum clamping voltage of the P4SMA39CA under surge conditions?
The P4SMA39CA has a maximum clamping voltage (VC) of 53.9 V at 7.7 A peak pulse current using the 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on protected circuitry during a 400W transient event - critical for ensuring downstream components like 60V-rated MOSFETs or 55V-input PMICs remain within safe operating area.
Can the P4SMA39CA be used in place of a unidirectional TVS like P4SMA39A?
No - the P4SMA39CA and P4SMA39A are not interchangeable without circuit review. While both share VWM = 33.3V and similar VC, the P4SMA39CA is bidirectional and lacks polarity dependence, whereas P4SMA39A is unidirectional and must be oriented with cathode toward the protected line's higher potential. Replacing one with the other may result in improper clamping or reverse conduction in DC-biased applications.
What packaging and reel options are available for the P4SMA39CA?
The P4SMA39CA is supplied in DO-214AC (SMA) package on 7,500-piece tape-and-reel format per ordering code P4SMA39CA. Tape complies with EIA-481-D standards, and reels are compatible with standard pick-and-place equipment. No bulk or ammo-pack options are offered - consistent with TSC's S2102 specification revision for this family.
P4SMA39CA 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA39CA FAQ
1.How can I place an order for P4SMA39CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA39CA 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 P4SMA39CA reliable?
The price and inventory of P4SMA39CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA39CA is usually 5 days.
3.What payment methods are accepted for P4SMA39CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA39CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA39CA?
P4SMA39CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA39CA 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 P4SMA39CA?
For technical support, including P4SMA39CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA39CA requirements.
6.How does Aetrix verify that P4SMA39CA is sourced from the original manufacturer or authorized distributors?
All P4SMA39CA 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 P4SMA39CA meets industry standards.
7.What is the process for return or replacement of P4SMA39CA?
All P4SMA39CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA39CA, 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 P4SMA39CA part is unused and in its original packaging.
Return procedure for P4SMA39CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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