My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA30A-M3/5A
- Part No.:
- P4SMA30A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30A-M3/5A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,520
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA30A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 30 V standoff voltage (VWM), 31.5 V maximum breakdown voltage (VBR), 41.4 V clamping voltage at 9.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA30A-M3/5A datasheet, P4SMA30A-M3/5A pinout, P4SMA30A-M3/5A application, or P4SMA30A-M3/5A equivalent, key selection criteria include unidirectional polarity, 120 °C/W junction-to-ambient thermal resistance, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a clamping device triggered by reverse-biased avalanche breakdown above its standoff voltage. Its glass-passivated junction ensures stable leakage (<1 µA at 25.6 V) and fast response time (<1 ns), enabling protection against ESD, inductive switching spikes, and lightning-induced surges.
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), supports continuous power dissipation of 3.3 W at 50 °C on infinite heatsink, and maintains operation across -65 °C to +150 °C junction temperature range - validated per J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 25.6 V - maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 41.4 V at 9.7 A (10/1000 µs) - peak voltage seen by protected circuit under worst-case surge; limits stress on downstream components |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity for standard 10/1000 µs surge; derates to 300 W above 91 V |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - minimal standby power loss and signal integrity impact in high-impedance circuits |
| TJ max. | +150 °C - enables use in under-hood automotive and industrial environments without thermal derating penalties |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm × 4.50 mm footprint and matte tin-plated leads |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference in unidirectional configuration; completes clamping loop during overvoltage events |
| Cathode | Avalanche conduction terminal | Banded end; connected to protected line (e.g., VCC, signal); conducts reverse current when transient exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without external series impedance |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and automotive supply chains without compromising electrical performance |
| AEC-Q101 qualified variants available | Enables drop-in qualification path via P4SMA30AHM3_B/I; meets stress test requirements for automotive electronics |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to limit transient voltage to safe levels for front-end amplifiers and ADC drivers. Use Value: Clamps 41.4 V at 9.7 A, keeping protected ICs within absolute maximum ratings during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at connector entry point to shunt surge energy before reaching optocoupler or Schmitt trigger input stage. Use Value: Withstands 400 W peak pulse and 40 A surge current, eliminating need for additional series impedance or RC filtering in harsh factory environments. |
| Consumer Power Adapter Output | Telecom Ethernet PHY Protection |
Use Scenario: Secondary-side overvoltage suppression on 5–24 V DC outputs of wall adapters and USB PD chargers exposed to capacitor discharge or feedback loop faults. IC Role / Device Role / Timing Role: Fast-response TVS placed across output rails to clamp fault voltages before they damage connected devices or violate USB specifications. Use Value: 25.6 V VWM provides 20 % margin above nominal 24 V output while maintaining low leakage (<1 µA) to avoid standby power penalty. |
Use Scenario: Protecting 10/100/1000BASE-T Ethernet PHYs from ESD (IEC 61000-4-2 ±8 kV contact) and surge coupling through magnetics or RJ45 jacks. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on differential pairs (e.g., TX+/TX−) referenced to local ground plane to preserve signal integrity. Use Value: Junction capacitance <100 pF at VWM minimizes insertion loss and jitter; 41.4 V clamping prevents PHY latch-up during multi-kV transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A (Bourns) | Same VWM (25.6 V), higher VC (48.4 V at 8.3 A), SMB package (larger footprint, 4.6 × 3.9 mm) | Lower power density (600 W vs. 400 W), less suitable for space-constrained PCBs | Select when board layout allows larger package and higher clamping voltage is acceptable for legacy designs |
| 1.5SMC30A (ON Semiconductor) | Identical VWM/VBR/VC specs, same SMA package, but E3 suffix (lead-free, not halogen-free) | Lacks halogen-free certification; may not meet Tier 1 automotive or green procurement mandates | Choose only for cost-sensitive commercial applications where M3 environmental compliance is not required |
Compared with P4SMA30A-M3/5A, SMBJ30A offers higher surge current tolerance but sacrifices board space and clamping efficiency, while 1.5SMC30A matches electrical performance but omits halogen-free compliance - making P4SMA30A-M3/5A the optimal choice for environmentally regulated, space-constrained industrial and automotive designs.
Availability
P4SMA30A-M3/5A is available at Aetrix Electronics and suitable for industrial PLC input stages, automotive sensor interfaces, consumer power adapter outputs, and telecom Ethernet PHY protection requiring stable component supply and halogen-free compliance.
Supply support for P4SMA30A-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4SMA Series targets cost-effective, high-volume transient suppression in consumer, industrial, and automotive systems - engineered for automated placement, thermal robustness, and compliance with AEC-Q101 and RoHS standards.
FAQ
What is the maximum clamping voltage of P4SMA30A-M3/5A under standard surge conditions?
The P4SMA30A-M3/5A exhibits a maximum clamping voltage (VC) of 41.4 V when subjected to a 10/1000 µs waveform at 9.7 A peak pulse current. This value is measured per Figure 1 in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and represents the upper voltage limit imposed on protected circuitry during standardized surge events. The P4SMA30A-M3/5A maintains this clamping performance across its full operating temperature range.
Is P4SMA30A-M3/5A suitable for automotive applications?
P4SMA30A-M3/5A itself is not AEC-Q101 qualified, but it belongs to the P4SMA family for which Vishay offers AEC-Q101 variants (e.g., P4SMA30AHM3_B/I). The P4SMA30A-M3/5A shares identical electrical characteristics, package, and thermal behavior with those qualified versions - enabling direct qualification path. Its halogen-free (M3) construction and MSL Level 1 rating further support automotive manufacturing requirements.
What does the "/5A" suffix indicate in P4SMA30A-M3/5A?
The "/5A" suffix in P4SMA30A-M3/5A denotes the packaging format: 13-inch diameter plastic tape and reel containing 7500 units. This contrasts with "/61", which indicates 7-inch tape and reel (1800 units). Both formats use the same M3 halogen-free, RoHS-compliant construction and identical electrical specifications - the suffix solely identifies reel size and quantity for automated assembly logistics.
How does P4SMA30A-M3/5A differ from bidirectional variants like P4SMA30CA?
P4SMA30A-M3/5A is unidirectional, with polarity marked by a cathode band and intended for DC line protection (e.g., VCC-to-ground). In contrast, P4SMA30CA is bidirectional, has no polarity marking, and protects AC or symmetrical signal lines (e.g., RS-485, audio). Their breakdown voltages differ: P4SMA30A-M3/5A has VBR = 28.5–31.5 V, while P4SMA30CA has VBR = 33.3–36.8 V - reflecting distinct test configurations and application constraints. The P4SMA30A-M3/5A cannot substitute for P4SMA30CA in AC-coupled circuits.
What is the thermal resistance of P4SMA30A-M3/5A, and how does it affect layout design?
P4SMA30A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended copper pads (0.2" × 0.2", or 5.0 mm × 5.0 mm per terminal). This value assumes no additional heatsinking. To maintain TJ ≤ 150 °C under 3.3 W continuous dissipation, PCB layout must provide adequate copper area and airflow - underscoring the need to follow Vishay's mounting pad layout guidelines in the datasheet. The P4SMA30A-M3/5A's RθJL of 30 °C/W also informs thermal path optimization to internal traces.
P4SMA30A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA30A-M3/5A FAQ
1.How can I place an order for P4SMA30A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30A-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 P4SMA30A-M3/5A reliable?
The price and inventory of P4SMA30A-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 P4SMA30A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA30A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30A-M3/5A?
P4SMA30A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30A-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 P4SMA30A-M3/5A?
For technical support, including P4SMA30A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30A-M3/5A requirements.
6.How does Aetrix verify that P4SMA30A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA30A-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 P4SMA30A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA30A-M3/5A?
All P4SMA30A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30A-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 P4SMA30A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA30A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30A-M3/5A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
