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Vishay General Semiconductor - Diodes Division P4SMA24A-M3/61
- Part No.:
- P4SMA24A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24A-M3/61.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA24A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features a 24 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 33.2 V maximum clamping voltage (VC) at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the P4SMA24A-M3/61 datasheet, P4SMA24A-M3/61 pinout, P4SMA24A-M3/61 application, or P4SMA24A-M3/61 equivalent, this device is selected for robust overvoltage protection in automotive sensor interfaces, industrial I/O modules, and telecom line-card surge immunity where low-profile SMT placement, AEC-Q101 qualification, and halogen-free compliance are required.
Technical Context
The P4SMA24A-M3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to divert surge energy to ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at 20.5 V), while thermal resistance (RθJA = 120 °C/W) supports operation up to 150 °C junction temperature.
It delivers fast response time (<1.0 ns) and low incremental surge resistance, enabling effective suppression of 8.3 ms half-sine surges up to 40 A (IFSM) and repetitive 10/1000 µs pulses at 0.01% duty cycle. The device meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant (M3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Tight tolerance ensures predictable turn-on during transients; critical for system-level voltage margining. |
| VC (Clamping Voltage) | 33.2 V at 12 A IPPM - Limits voltage seen by protected ICs during 10/1000 µs surge; enables compatibility with 24 V rail systems. |
| PPPM (Peak Pulse Power) | 400 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when mounted on 5 mm × 5 mm copper pads. |
| ID (Reverse Leakage) | <1 µA at VWM - Minimizes standby power loss and avoids false triggering in low-current sensor circuits. |
| TJ max | 150 °C - Supports under-hood automotive and industrial environments where ambient temperatures exceed 85 °C. |
| Package | SMA (DO-214AC) - Standardized SMT footprint compatible with automated assembly; 0.208" × 0.157" body with cathode band marking. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, single-ended unidirectional configuration. Cathode terminal marked by black band; anode is unmarked end. Dimensions: 5.28 mm × 3.99 mm × 2.29 mm (L × W × H). Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to ground or low-impedance return path; carries full IPPM during clamping event. |
| Anode (unmarked end) | Protected line input | Connected to line being protected (e.g., 24 V supply or sensor signal); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV) and ISO 7637-2 Pulse 5a in properly laid-out PCBs. |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and JEDEC J-STD-204 requirements for green manufacturing and end-of-life processing. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture sensitivity handling overhead. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh industrial environments. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply line and chassis ground to clamp transients before reaching downstream LDOs or ADC front-ends. Use Value: Limits clamped voltage to 33.2 V, staying within absolute maximum ratings of common 24 V-rated interface ICs and preventing latch-up or permanent damage. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to field wiring surges from motor contactors or solenoid valves. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt induced transients directly to ground plane, reducing stress on optocoupler or Schmitt-trigger input stages. Use Value: With 12 A IPPM capability and sub-1 ns response, it suppresses >90% of energy from 10/1000 µs surges before propagation into isolation barrier. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection for 48 V DC power feeds in telecom base station line cards subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage clamping device in multi-stage protection scheme, working with GDTs and series impedance to limit let-through voltage. Use Value: 400 W rating allows absorption of high-energy transients without degradation, extending system MTBF in outdoor deployments. |
Use Scenario: Secondary-side overvoltage clamp on 24 V output rails of wall-mounted AC/DC adapters used in smart home hubs and security cameras. IC Role / Device Role / Timing Role: Fast-acting secondary protection that activates if primary regulation fails, preventing overvoltage damage to connected USB-PD or PoE-powered devices. Use Value: Low 1 µA leakage at 20.5 V avoids unnecessary standby current draw while maintaining tight 24 V system margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A (Vishay) | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; same VWM/VBR/VC specs. | Better suited for higher-energy transients but requires larger PCB area and different pad layout. | Select SMBJ24A when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when thermal derating margin is critical. |
| 1.5SMC24A (ON Semiconductor) | Identical electrical specs (VWM = 20.5 V, VC = 33.2 V), same SMA package, but not AEC-Q101 qualified; RoHS-compliant only. | Limited to commercial/industrial use; not approved for automotive production programs requiring AEC validation. | Choose 1.5SMC24A for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMBJ24A and 1.5SMC24A, the P4SMA24A-M3/61 uniquely balances AEC-Q101 qualification, halogen-free compliance, and compact SMA footprint-making it optimal for space-constrained automotive and industrial edge nodes where regulatory and environmental requirements converge.
Availability
P4SMA24A-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line-card surge immunity requiring stable component supply, halogen-free materials, and AEC-Q101 traceability.
Supply support for P4SMA24A-M3/61 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 robust transient suppression in automotive, industrial, and telecom infrastructure-designed to meet stringent AEC-Q101, IEC, and ISO surge immunity standards while supporting automated SMT assembly.
FAQ
What is the maximum clamping voltage of the P4SMA24A-M3/61 under a 10/1000 µs surge?
The P4SMA24A-M3/61 has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions with the device mounted on 0.2" × 0.2" copper pads and represents the upper voltage limit imposed on protected circuitry during transient events. The P4SMA24A-M3/61 maintains this clamping performance across its specified operating temperature range.
Is the P4SMA24A-M3/61 suitable for automotive applications?
Yes, the P4SMA24A-M3/61 is AEC-Q101 qualified and explicitly designated for automotive use via its M3 suffix (halogen-free, RoHS-compliant, and AEC-Q101 validated). It supports under-hood and cabin applications including engine control sensors, body electronics, and ADAS camera modules where reliability under thermal cycling and surge stress is mandatory. The P4SMA24A-M3/61 meets all required lifetime and failure mode criteria per AEC-Q101 Rev D.
What does the "M3" suffix indicate in P4SMA24A-M3/61?
The "M3" suffix in P4SMA24A-M3/61 denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-204 and IEC 61249-2-21 standards, along with AEC-Q101 qualification. It also specifies compliance with JESD 201 Class 2 whisker resistance and MSL Level 1 reflow capability (peak 260 °C). The "/61" indicates packaging in 7-inch plastic tape and reel with 1800 units per reel. The P4SMA24A-M3/61 is not merely commercial-grade-it is automotive-validated.
How does the P4SMA24A-M3/61 compare to bidirectional TVS diodes like P4SMA24CA?
The P4SMA24A-M3/61 is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply rails), offering lower leakage and tighter VBR tolerance than bidirectional variants. In contrast, P4SMA24CA provides symmetrical clamping for AC or floating signal lines but exhibits higher ID at VWM and wider VBR spread. The P4SMA24A-M3/61's cathode band marking simplifies orientation during automated placement-critical for high-yield manufacturing.
What is the thermal resistance and maximum junction temperature of the P4SMA24A-M3/61?
The P4SMA24A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads, and a maximum operating junction temperature (TJ max) of +150 °C. This allows reliable operation in ambient temperatures up to +125 °C in well-ventilated enclosures. Derating curves in the datasheet confirm sustained 400 W pulse capability down to TJ = 100 °C. The P4SMA24A-M3/61 must be thermally anchored per Vishay's pad layout guidelines to maintain these ratings.
P4SMA24A-M3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA24A-M3/61 FAQ
1.How can I place an order for P4SMA24A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24A-M3/61 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 P4SMA24A-M3/61 reliable?
The price and inventory of P4SMA24A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA24A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24A-M3/61?
P4SMA24A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24A-M3/61 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 P4SMA24A-M3/61?
For technical support, including P4SMA24A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24A-M3/61 requirements.
6.How does Aetrix verify that P4SMA24A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA24A-M3/61 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 P4SMA24A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA24A-M3/61?
All P4SMA24A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24A-M3/61, 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 P4SMA24A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA24A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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