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Vishay General Semiconductor - Diodes Division P4SMA30AHM3/H
- Part No.:
- P4SMA30AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30AHM3/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,523
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Product details
Overview
P4SMA30AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 30 V standoff voltage (VWM), 31.5 V maximum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It clamps transients to 41.4 V at 9.7 A peak pulse current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the P4SMA30AHM3/H datasheet, P4SMA30AHM3/H pinout, P4SMA30AHM3/H application, or P4SMA30AHM3/H equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, 3.3 W steady-state power dissipation, and halogen-free RoHS-compliant construction with M3 suffix.
Technical Context
The P4SMA30AHM3/H operates as a clamping-type TVS diode that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (28.5–31.5 V at 1 mA), limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable leakage (<1 µA at 25.6 V) and fast response time (<1 ns).
Designed for surface-mount PCB integration, it delivers 400 W surge capability under standardized 10/1000 µs waveform conditions with derating above 25 °C ambient, and meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C). The cathode band identifies polarity for correct unidirectional placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC signal margin. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 41.4 V at 9.7 A IPPM - Peak voltage seen by protected IC/MOSFET during worst-case 400 W surge event. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Surge energy handling capacity; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) compliance. |
| ID (Reverse Leakage) | <1 µA at 25.6 V - Minimal standby current draw; avoids signal distortion or battery drain in low-power systems. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures without thermal shutdown. |
| Package | SMA (DO-214AC) - Industry-standard 2-pin SMD footprint (5.28 mm × 4.50 mm); compatible with automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference | Connected to ground or lower-potential node; enables unidirectional clamping from signal line to GND. |
| Cathode | Avalanche conduction terminal / high-side input | Connected to protected signal line; conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JEDEC standards. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental regulations for global OEM supply chains; no brominated flame retardants in molding compound. |
| 400 W peak pulse power (10/1000 µs) | Supports protection against severe lightning-induced surges and inductive switching spikes in 12 V/24 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on downstream components-critical for 3.3 V/5 V logic and automotive sensors. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN bus interface pins and relay driver outputs from load dump and alternator ripple in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy between signal line and chassis ground. Use Value: Prevents latch-up or gate oxide damage in MCU GPIOs and high-side drivers exposed to ISO 7637-2 Pulse 5a (load dump up to 60 V). |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-clamp device placed across optocoupler input terminals. Use Value: Ensures reliable signal detection despite repeated 1 kV/500 Ω surges per IEC 61000-4-5, avoiding false triggering or component failure. |
| Automotive Camera Power Line | Consumer Appliance Motor Driver Interface |
Use Scenario: Safeguarding 12 V power rail of ADAS camera modules against ignition noise and ESD events during vehicle start-stop cycles. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, upstream of LDO regulator. Use Value: Maintains uninterrupted camera operation by limiting input voltage to ≤41.4 V during 400 W transients, preserving image sensor integrity. |
Use Scenario: Protecting microcontroller I/O lines driving brushed DC motor H-bridge enable signals in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Signal-line TVS on logic-level control inputs subject to back-EMF coupling. Use Value: Eliminates firmware resets caused by inductive kickback exceeding MCU absolute maximum ratings (e.g., >6 V on 5 V-tolerant pins). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM (25.6 V), VC = 48.4 V at 8.3 A; 400 W rating but higher clamping voltage (+7 V). | Less effective for low-voltage ICs due to elevated clamping; suitable where margin allows ≥48 V tolerance. | Select SMAJ30A only if board layout constraints favor alternate footprint or cost optimization outweighs clamping performance loss. |
| 1.5SMC33A | Higher VWM (28.2 V), VC = 53.3 V at 7.5 A; larger SMC (DO-214AB) package (7.11 mm × 6.22 mm). | Requires larger PCB area; better thermal mass but incompatible with dense SMA layouts. | Choose 1.5SMC33A when system-level thermal management demands higher steady-state power handling (>5 W) or legacy SMC footprints exist. |
Compared with SMAJ30A and 1.5SMC33A, P4SMA30AHM3/H provides the lowest clamping voltage in SMA package with AEC-Q101 and halogen-free certification-making it optimal for space-constrained, automotive-qualified designs requiring tight voltage margins.
Availability
P4SMA30AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and consumer appliance designs requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for P4SMA30AHM3/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, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The P4SMA Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure-designed specifically for compact SMD deployment with AEC-Q101 and halogen-free requirements.
FAQ
What is the maximum clamping voltage of P4SMA30AHM3/H under surge conditions?
The P4SMA30AHM3/H clamps to a maximum of 41.4 V at 9.7 A peak pulse current (IPPM) under standardized 10/1000 µs waveform conditions. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is P4SMA30AHM3/H suitable for automotive applications?
Yes, P4SMA30AHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for operation from −65 °C to +150 °C junction temperature and validated for mechanical shock, temperature cycling, and HTRB per automotive reliability standards.
What does the "HM3" suffix mean in P4SMA30AHM3/H?
The "HM3" suffix in P4SMA30AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering guide, HM3 indicates compliance with JEDEC J-STD-020 MSL Level 1 and whisker resistance per JESD 201 Class 2-ensuring suitability for high-reliability automotive and industrial assembly.
What is the standoff voltage (VWM) rating for P4SMA30AHM3/H?
The standoff voltage (VWM) for P4SMA30AHM3/H is 25.6 V, representing the maximum continuous reverse voltage the device can withstand without entering avalanche conduction. This value is specified at 25 °C and ensures compatibility with 24 V nominal systems while maintaining adequate margin below breakdown.
Does P4SMA30AHM3/H have bidirectional capability?
No, P4SMA30AHM3/H is a unidirectional TVS diode. Its part number ends in "A", not "CA", and Vishay documentation confirms unidirectional polarity with cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA30CA) and exhibit symmetrical clamping in both directions.
P4SMA30AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P4SMA30AHM3/H FAQ
1.How can I place an order for P4SMA30AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30AHM3/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 P4SMA30AHM3/H reliable?
The price and inventory of P4SMA30AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA30AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30AHM3/H?
P4SMA30AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30AHM3/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 P4SMA30AHM3/H?
For technical support, including P4SMA30AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30AHM3/H requirements.
6.How does Aetrix verify that P4SMA30AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA30AHM3/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 P4SMA30AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA30AHM3/H?
All P4SMA30AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30AHM3/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 P4SMA30AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA30AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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