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Vishay General Semiconductor - Diodes Division P4SMA24AHM3_A/H
- Part No.:
- P4SMA24AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24AHM3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,123
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Product details
Overview
P4SMA24AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 24 V standoff voltage (VWM), 25.2 V maximum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It provides clamping protection for automotive-grade sensor signal lines, MOSFET gate drivers, and I/O interfaces against ESD and inductive switching transients.
For engineers reviewing the P4SMA24AHM3_A/H datasheet, P4SMA24AHM3_A/H pinout, P4SMA24AHM3_A/H application, or P4SMA24AHM3_A/H equivalent, this AEC-Q101 qualified TVS offers verified 33.2 V clamping voltage at 12 A peak pulse current, low 0.094 %/°C VBR temperature coefficient, and halogen-free RoHS compliance - critical for automotive electronics design validation and long-term supply continuity.
Technical Context
The P4SMA24AHM3_A/H operates as a unidirectional clamping device with cathode-banded polarity, leveraging glass-passivated junction technology for stable avalanche behavior under repetitive transient stress. Its 120 °C/W junction-to-ambient thermal resistance and 30 °C/W junction-to-lead resistance support reliable operation up to 150 °C junction temperature when mounted on 5.0 mm × 5.0 mm copper pads.
Designed for fast response (<1 ns), it delivers 20.5 V stand-off voltage with ≤1.0 µA reverse leakage at VWM and clamps to 33.2 V at 12 A IPPM (10/1000 µs waveform), achieving low incremental surge resistance for minimal voltage overshoot during transient events in 12 V and 24 V automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 33.2 V at 12 A IPPM (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; enables robust IC-level protection. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability per transient event; validated for automotive load-dump and ISO 7637-2 pulse 1/2a/5a compliance. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Negligible standby current; prevents signal integrity degradation or battery drain in always-on circuits. |
| TJ max | 150 °C - Maximum junction temperature rating; supports under-hood deployment in engine control units and ADAS modules. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability including temperature cycling, HTRB, and ESD; required for Tier-1 supplier BOMs. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Molding compound meets UL 94 V-0 flammability rating. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or low-side reference in unidirectional TVS configuration. | Provides low-impedance path to ground during reverse-transient clamping; must be routed with minimal inductance for effective suppression. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., CAN_H, LIN, sensor output). | Defines polarity-sensitive clamping node; band marking ensures correct orientation during automated placement and avoids misapplication. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables single-device protection against severe automotive transients (e.g., ISO 7637-2 Pulse 5a) without derating or parallel staging. |
| AEC-Q101 qualification (HM3 suffix) | Validates reliability for automotive applications including temperature cycling, high-temp reverse bias, and mechanical shock - mandatory for OEM acceptance. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU ELV Directive and OEM sustainability requirements; eliminates brominated flame retardants without compromising thermal or electrical performance. |
| Low 0.094 %/°C VBR tempco | Minimizes drift of clamping threshold across -40 °C to +125 °C ambient; ensures consistent protection margin in wide-temperature vehicle environments. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns; eliminates bake requirements and process delays. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤33.2 V, preventing ADC saturation and latch-up while maintaining <1 µA leakage at 20.5 V nominal rail. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) backplanes subjected to field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each isolated input channel, referenced to local ground plane. Use Value: Absorbs 400 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Driver Protection |
Use Scenario: Shielding LIN bus transceivers and LED driver outputs in BCMs from battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on LIN data line and 12 V switched supply rails. Use Value: Clamps 12 V rail transients to 33.2 V within <1 ns, preserving transceiver functionality and avoiding system reset. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: TVS across motor terminals or MOSFET drain-source nodes in half-bridge drivers. Use Value: Dissipates 400 W surge energy without failure, extending MOSFET lifetime and eliminating need for snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24AHE3/A | Same VWM (20.5 V), same SMA package, but rated for 400 W only up to 91 V; no AEC-Q101 qualification. | Limited to commercial/industrial use; not approved for automotive production programs requiring AEC-Q101 traceability. | Select P4SMA24AHM3_A/H when automotive qualification, halogen-free compliance, or extended 150 °C operation is required. |
| 1.5SMC24AH | Higher 1.5 kW peak power rating, DO-214AB (SMB) package, larger footprint (5.3 mm × 4.1 mm vs. 4.5 mm × 2.8 mm), 33.2 V VC at 43.3 A. | Better suited for higher-energy transients but incompatible with dense PCB layouts optimized for SMA footprints. | Choose P4SMA24AHM3_A/H where board space is constrained and 400 W suffices - avoids redesign and maintains layout compatibility. |
Compared with SMAJ24AHE3/A, P4SMA24AHM3_A/H adds AEC-Q101 qualification and halogen-free construction without sacrificing clamping performance; versus 1.5SMC24AH, it trades peak power for compact size and automotive compliance - making it optimal for space-constrained, production-grade automotive electronics.
Availability
P4SMA24AHM3_A/H is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O protection, and consumer appliance motor driver circuits requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for P4SMA24AHM3_A/H 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series targets automotive and industrial transient suppression, designed to deliver high-power clamping in compact surface-mount packages with AEC-Q101 qualification and full regulatory compliance.
FAQ
What is the clamping voltage of P4SMA24AHM3_A/H at its rated peak pulse current?
The P4SMA24AHM3_A/H has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured and guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88367), ensuring predictable overvoltage limiting for downstream ICs and transistors protected by the P4SMA24AHM3_A/H.
Is P4SMA24AHM3_A/H qualified for automotive applications?
Yes, P4SMA24AHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making P4SMA24AHM3_A/H suitable for engine control units, ADAS sensors, and body electronics in production vehicles.
What does the "_A/H" suffix mean in P4SMA24AHM3_A/H?
The "_A/H" suffix in P4SMA24AHM3_A/H specifies the packaging and revision: "A" denotes the first revision level of the HM3 variant, and "H" indicates 7-inch diameter plastic tape-and-reel packaging with 1800 units per reel. This matches Vishay's ordering convention in Document 88367, confirming P4SMA24AHM3_A/H is supplied in standard SMT-ready format for high-volume automated assembly.
Can P4SMA24AHM3_A/H replace P4SMA24A-E3 in an existing design?
P4SMA24AHM3_A/H can replace P4SMA24A-E3 electrically and mechanically - both share identical VWM (20.5 V), VBR (22.8–25.2 V), VC (33.2 V), SMA package, and pinout. However, P4SMA24AHM3_A/H adds AEC-Q101 qualification and halogen-free construction, so redesign verification is recommended if targeting automotive production, though no PCB changes are needed for drop-in substitution of P4SMA24AHM3_A/H.
What is the maximum operating temperature for P4SMA24AHM3_A/H?
The P4SMA24AHM3_A/H has a maximum junction temperature (TJ max) of +150 °C and an operating junction/storage temperature range of -65 °C to +150 °C. Its thermal resistance (RθJA = 120 °C/W) is specified for mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads, enabling reliable operation in under-hood automotive environments and industrial enclosures where ambient temperatures exceed 105 °C - a key specification confirmed for P4SMA24AHM3_A/H in the official Vishay datasheet.
P4SMA24AHM3_A/H 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA24AHM3_A/H FAQ
1.How can I place an order for P4SMA24AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24AHM3_A/H 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 P4SMA24AHM3_A/H reliable?
The price and inventory of P4SMA24AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA24AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24AHM3_A/H?
P4SMA24AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24AHM3_A/H 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 P4SMA24AHM3_A/H?
For technical support, including P4SMA24AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA24AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA24AHM3_A/H 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 P4SMA24AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA24AHM3_A/H?
All P4SMA24AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24AHM3_A/H, 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 P4SMA24AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA24AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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