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Vishay General Semiconductor - Diodes Division P4SMA24CA-M3/5A
- Part No.:
- P4SMA24CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24CA-M3/5A.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
P4SMA24CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 24 V standoff voltage (VWM), 25.2 V minimum breakdown voltage (VBR), and 33.2 V maximum clamping voltage (VC) at 12.0 A peak pulse current (IPPM) under 10/1000 µs waveform. It delivers 400 W peak pulse power and is used to protect signal lines and IC inputs in automotive sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the P4SMA24CA-M3/5A datasheet, P4SMA24CA-M3/5A pinout, P4SMA24CA-M3/5A application, or P4SMA24CA-M3/5A equivalent, key selection criteria include bidirectional clamping behavior, 120 °C/W junction-to-ambient thermal resistance, AEC-Q101 qualification status, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR over temperature and long-term reliability under repetitive surge stress.
The device uses a low-inductance SMA package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, supporting automated placement and reflow soldering up to 260 °C peak (MSL Level 1). Clamping performance is specified at 12.0 A IPPM with VC = 33.2 V, yielding a low dynamic impedance of ~1.77 Ω.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 20.5 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 22.8–25.2 V at 1.0 mA - Voltage range where device transitions from high-impedance to low-impedance clamping state |
| VC (Clamping) | 33.2 V at 12.0 A IPPM - Maximum voltage seen by protected circuit during 10/1000 µs transient; determines downstream component stress |
| PPPM | 400 W - Peak pulse power handling capability under standard 10/1000 µs waveform; defines transient energy absorption limit |
| ID (Leakage) | 1.0 µA max at VWM - Low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad design for sustained power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either direction) | Accepts surge current regardless of polarity; connects to line being protected |
| Cathode | Transient current exit point (either direction) | Completes low-impedance path to ground or reference rail during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity-sensitive layout constraints |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching in automotive and industrial control systems |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JEDEC standards |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for global automotive and industrial OEM supply chains |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow processes without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamps both positive and negative transients on sensor output pins to prevent damage to ADC input stages. Use Value: Maintains signal fidelity under ±33.2 V clamping while surviving >1000 surges per ISO 7637-2 Pulse 5a test profile. |
Use Scenario: Safeguarding CAN_H and CAN_L differential pair against ESD events and coupled noise in factory automation PLCs. IC Role / Device Role / Timing Role: Placed across CAN bus lines to clamp common-mode transients without disrupting 1 Mbps data integrity. Use Value: Limits voltage excursion to ≤33.2 V during 8 kV contact ESD (IEC 61000-4-2), preserving bus arbitration timing. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding USB 2.0 D+ and D− lines in set-top boxes from user-handling ESD during hot-plug insertion. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS shunts ESD current away from USB transceiver I/O pins. Use Value: Adds <1 pF junction capacitance (per diode) to avoid signal rise-time degradation at 480 Mbps full-speed operation. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers against lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Paired P4SMA24CA-M3/5A devices clamp longitudinal surges across tip/ring while maintaining DC bias stability. Use Value: Withstands 10/1000 µs 400 W pulses per ITU-T K.21 recommendation for class B equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; RθJA = 85 °C/W | Better suited for higher-energy transients but requires 30% more PCB area | Select when system-level surge testing exceeds IEC 61000-4-5 Level 3 (1 kV/2 Ω) |
| 1.5KE24CA | Through-hole TO-218 package; 1500 W PPPM; VWM = 20.5 V; VC = 36.0 V at 41.7 A | Designed for board-edge or chassis-level primary protection, not signal-line placement | Choose for cost-sensitive industrial power supply inputs where SMT density is not constrained |
Compared with SMBJ24CA and 1.5KE24CA, P4SMA24CA-M3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability-making it preferred for space-constrained automotive and embedded signal-line protection where MSL-1 reflow compatibility is mandatory.
Availability
P4SMA24CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer USB interfaces, and telecom DSL line cards requiring stable component supply with halogen-free compliance and AEC-Q101 validation.
Supply support for P4SMA24CA-M3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P4SMA Series targets cost-effective, high-volume transient protection for automotive, industrial, and consumer electronics-designed specifically for robustness in harsh environments and compatibility with automated SMT assembly.
FAQ
What is the clamping voltage of P4SMA24CA-M3/5A at its rated peak pulse current?
The P4SMA24CA-M3/5A has a maximum clamping voltage (VC) of 33.2 V at 12.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA24CA-M3/5A maintains this clamping performance across its operational temperature range.
Is P4SMA24CA-M3/5A qualified for automotive applications?
Yes, P4SMA24CA-M3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation for the P4SMA series with HM3 suffix variants. The "M3" in P4SMA24CA-M3/5A denotes halogen-free, RoHS-compliant construction, and the AEC-Q101 qualification applies to the entire P4SMA family including this part number. This makes P4SMA24CA-M3/5A suitable for use in engine control units, body electronics, and ADAS sensor modules.
What does the "CA" suffix indicate in P4SMA24CA-M3/5A?
The "CA" suffix in P4SMA24CA-M3/5A specifies a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., P4SMA24A), the CA version has no cathode marking and functions identically whether voltage is applied anode-to-cathode or cathode-to-anode-ideal for protecting AC-coupled or differential signal lines such as CAN, RS-485, or USB D+/D− pairs.
What is the maximum operating junction temperature for P4SMA24CA-M3/5A?
The maximum operating junction temperature (TJ max) for P4SMA24CA-M3/5A is +150 °C, as specified in Vishay's P4SMA datasheet. This rating supports reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating of peak pulse power begins above TA = 25 °C per Figure 2 in the datasheet, with full derating applied at TJ = 150 °C.
How does the thermal resistance of P4SMA24CA-M3/5A affect PCB layout?
P4SMA24CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout. To maintain safe junction temperatures during repetitive surge events, designers must provide adequate copper pour area-Vishay specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size increases RθJA and risks thermal runaway during sustained transient activity, so the P4SMA24CA-M3/5A layout must follow these guidelines strictly.
P4SMA24CA-M3/5A 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA24CA-M3/5A FAQ
1.How can I place an order for P4SMA24CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24CA-M3/5A 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 P4SMA24CA-M3/5A reliable?
The price and inventory of P4SMA24CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA24CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24CA-M3/5A?
P4SMA24CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24CA-M3/5A 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 P4SMA24CA-M3/5A?
For technical support, including P4SMA24CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA24CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA24CA-M3/5A 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 P4SMA24CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA24CA-M3/5A?
All P4SMA24CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24CA-M3/5A, 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 P4SMA24CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA24CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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