My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA43A-M3/61
- Part No.:
- P4SMA43A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43A-M3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,806
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA43A-M3/61 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 a 43 V breakdown voltage (VBR min/max = 40.9–45.2 V at 1 mA), 36.8 V standoff voltage (VWM), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial power supplies.
For engineers reviewing the P4SMA43A-M3/61 datasheet, P4SMA43A-M3/61 pinout, P4SMA43A-M3/61 application, or P4SMA43A-M3/61 equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status (M3 suffix denotes halogen-free RoHS-compliant commercial grade), and clamping performance under repetitive surge conditions.
Technical Context
The P4SMA43A-M3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold to divert transient energy to ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and inductive switching events.
Thermally, it is rated for TJ = –65 to +150 °C and dissipates 3.3 W continuously on an infinite heatsink at 50 °C ambient. Derating applies above 25 °C per Figure 2, and its 0.01% duty cycle limit supports repetitive 400 W pulses only below 91 V - above that, peak power drops to 300 W per specification note.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1 mA - defines precise avalanche initiation range for reliable overvoltage triggering |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 10/1000 µs transient, limiting downstream device stress |
| PPPM | 400 W (≤91 V), 300 W (>91 V) - peak surge power handling capability under standard test waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), critical for inrush and fault-current survivability |
| RθJA | 120 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads, guiding PCB layout cooling |
| TJ max | +150 °C - maximum junction temperature, constraining sustained power dissipation in enclosed environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; polarity is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to protected line's lower-potential side (e.g., GND or return path) in unidirectional configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line's higher-potential side (e.g., VIN, signal rail); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without derating in compact layouts |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage (<1 µA at VWM) across temperature and lifetime |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified option available | M3 suffix indicates halogen-free RoHS compliance; HE3/HM3 variants offer automotive-grade qualification |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, reducing stress on downstream MOSFET gate oxides or IC inputs |
Applications
| Industrial Power Input Protection | Automotive Sensor Signal Line Clamping |
|---|---|
Use Scenario: 24 V DC industrial PLC input modules exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp transients before they reach input conditioning circuitry. Use Value: Limits voltage to ≤59.3 V during 6.7 A surges, preventing damage to op-amps and microcontroller GPIOs rated for 36 V absolute maximum. |
Use Scenario: CAN or LIN bus nodes in engine control units where sensor signals pass through harnesses prone to load dump coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal line to suppress coupled spikes while maintaining <1 µA leakage at 36.8 V standby. Use Value: Preserves signal integrity during 10/1000 µs transients up to 400 W without forward conduction or data corruption. |
| Consumer Device USB Port ESD Protection | Telecom Equipment AC-DC Adapter Output Stage |
Use Scenario: USB 2.0 data lines in smart home hubs subjected to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <50 pF at VWM) placed differential across D+/D− to shunt ESD without signal distortion. Use Value: Responds in <1 ns to ±8 kV HBM strikes, clamping to <60 V while maintaining USB eye diagram compliance. |
Use Scenario: Secondary-side 48 V output of telecom AC-DC adapters facing lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on regulated output rail, coordinated with upstream MOVs and fuses. Use Value: Absorbs 400 W surges repetitively at 0.01% duty cycle, enabling compliance with ITU-T K.20 and GR-1089-CORE standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A (Vishay) | Same VBR/VC specs but SMB (DO-214AA) package; 10% larger footprint, RθJA = 100 °C/W | Better thermal performance in high-power-density designs; requires larger PCB pad area | Select SMBJ43A when board space allows and thermal margin is constrained below 120 °C/W |
| 1.5SMC43A (ON Semiconductor) | Identical electrical specs (VBR: 40.9–45.2 V, VC: 59.3 V), same SMA package, but non-AEC-Q101 and no M3 halogen-free marking | Commercial-only use; lacks Vishay's M3 material certification for green manufacturing programs | Choose 1.5SMC43A for cost-sensitive non-automotive applications where halogen-free compliance is not mandated |
Compared with P4SMA43A-M3/61, SMBJ43A offers improved thermal dissipation in a slightly larger package, while 1.5SMC43A matches electrical performance but omits halogen-free and automotive qualification - making P4SMA43A-M3/61 optimal for RoHS+green-design industrial and Tier-1 automotive supply chains.
Availability
P4SMA43A-M3/61 is available at Aetrix Electronics and suitable for industrial power input protection, automotive sensor interface circuits, consumer USB port hardening, and telecom AC-DC adapter output stages requiring stable component supply, halogen-free compliance, and repeatable surge immunity.
Supply support for P4SMA43A-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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA series targets surface-mount transient suppression in space-constrained, high-reliability applications - engineered for consistent clamping performance, low leakage, and compatibility with automated SMT assembly lines.
FAQ
What is the polarity configuration of P4SMA43A-M3/61?
The P4SMA43A-M3/61 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the SMA (DO-214AC) package body, and it conducts only when reverse-biased beyond its breakdown voltage. This configuration makes P4SMA43A-M3/61 suitable for DC rail protection where polarity is fixed, unlike bidirectional variants which suppress both positive and negative transients.
Does P4SMA43A-M3/61 meet automotive qualification standards?
The P4SMA43A-M3/61 itself is halogen-free and RoHS-compliant (M3 suffix), but it is not AEC-Q101 qualified. For automotive applications, Vishay offers the P4SMA43AHE3_A or P4SMA43AHM3_A variants - the latter being halogen-free and AEC-Q101 qualified. Engineers must specify HE3 or HM3 suffixes explicitly to obtain automotive-grade P4SMA43A-M3/61 equivalents.
What is the maximum clamping voltage of P4SMA43A-M3/61 under surge conditions?
The P4SMA43A-M3/61 has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the datasheet and represents the upper voltage limit imposed on protected circuitry during a defined transient event - critical for ensuring downstream components remain within their absolute maximum ratings.
How does the thermal resistance of P4SMA43A-M3/61 affect PCB layout?
The P4SMA43A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under continuous power dissipation, designers must allocate adequate copper area and avoid excessive trace length or isolation - especially since its 3.3 W steady-state power rating derates significantly above 25 °C ambient.
Can P4SMA43A-M3/61 be used in bidirectional signal line protection?
No - P4SMA43A-M3/61 is strictly unidirectional and unsuitable for bidirectional signal lines like RS-485 or CAN without external circuitry. For such applications, Vishay specifies bidirectional variants with "CA" suffix (e.g., P4SMA43CA). Using P4SMA43A-M3/61 on AC-coupled or dual-polarity lines risks forward conduction during negative half-cycles, leading to malfunction or damage.
P4SMA43A-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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
P4SMA43A-M3/61 FAQ
1.How can I place an order for P4SMA43A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43A-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 P4SMA43A-M3/61 reliable?
The price and inventory of P4SMA43A-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 P4SMA43A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43A-M3/61?
P4SMA43A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43A-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 P4SMA43A-M3/61?
For technical support, including P4SMA43A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43A-M3/61 requirements.
6.How does Aetrix verify that P4SMA43A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43A-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 P4SMA43A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43A-M3/61?
All P4SMA43A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43A-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 P4SMA43A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA43A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43A-M3/61 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 …
