My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA43CAHE3_A/H
- Part No.:
- P4SMA43CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CAHE3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA43CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power 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 automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the P4SMA43CAHE3_A/H datasheet, P4SMA43CAHE3_A/H pinout, P4SMA43CAHE3_A/H application, or P4SMA43CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance (RθJA = 120 °C/W) for board-level surge protection in space-constrained designs.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while the 10/1000 µs waveform rating reflects standardized surge immunity testing per IEC 61000-4-5.
The P4SMA43CAHE3_A/H is rated for continuous power dissipation of 3.3 W at 50 °C on infinite heatsink, with junction temperature range from –65 °C to +150 °C and MSL Level 1 moisture sensitivity. Its 300 W derated peak power above 91 V does not apply here, confirming full 400 W capability at its 43 V rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9–45.2 V at 1 mA - defines precise avalanche initiation threshold for reliable transient capture |
| Standoff Voltage VWM | 36.8 V - maximum continuous working voltage before conduction begins |
| Clamping Voltage VC | 59.3 V at 6.7 A IPPM - limits downstream voltage during surge, protecting 3.3 V/5 V logic interfaces |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - supports robust surge immunity per IEC 61000-4-5 Level 4 |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal requirement |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Thermal Resistance RθJA | 120 °C/W - determines safe operating area under sustained power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive surges and anode during negative surges - enables dual-polarity clamping |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode; terminal symmetry eliminates orientation constraints during placement |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive ports |
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor lines (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends during 12 V/24 V system transients. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Primary transient suppressor on field-side PCB traces, coordinated with upstream fuses and filtering capacitors. Use Value: Maintains functional safety integrity by limiting transient overvoltage to <60 V, below IEC 61000-4-4 EFT and IEC 61000-4-5 surge thresholds. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485/RS-232 data lines in base stations and network equipment from lightning-induced surges and ESD events. IC Role / Device Role / Timing Role: First-line defense component mounted adjacent to connector, preceding TVS arrays or GDTs in multi-stage protection schemes. Use Value: Achieves sub-100 ns response time to clamp transients before they propagate into isolated interface ICs like ADM3485 or MAX3232. |
Use Scenario: Securing microcontroller GPIOs and display driver lines in washing machines, HVAC controls, and smart home hubs against user-accessible port surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) clamping element integrated into compact PCB layouts where space is constrained. Use Value: Enables RoHS-compliant, halogen-free design (via HE3 suffix) while meeting UL 497B recognition for telecom protectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; RθJA = 100 °C/W | Better thermal performance but requires 30% more board area; suited for higher-energy surge environments | Select when >400 W surge margin is required and layout allows larger footprint |
| 1.5KE43CA | Through-hole TO-218 package; same VBR/VC; 1500 W PPPM; higher IPPM (38.4 A) | Not surface-mountable; used in legacy or high-reliability power supply inputs where manual assembly is acceptable | Choose only for through-hole designs or where mechanical robustness outweighs SMT automation benefits |
Compared with SMBJ43CA and 1.5KE43CA, the P4SMA43CAHE3_A/H delivers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 400 W surge handling - making it the preferred choice for new automotive and industrial SMT designs requiring production scalability and thermal predictability.
Availability
P4SMA43CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 compliance, and RoHS/halogen-free material content.
Supply support for P4SMA43CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series was developed for high-volume, space-constrained transient suppression in automotive, industrial, and communications systems - combining AEC-Q101 qualification, standardized SMA packaging, and consistent 400 W surge capability across voltage grades.
FAQ
What is the clamping voltage of the P4SMA43CAHE3_A/H under maximum surge conditions?
The P4SMA43CAHE3_A/H has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per standard test conditions and ensures downstream circuitry remains within safe operating limits during transient events. The P4SMA43CAHE3_A/H maintains this clamping performance consistently due to its glass-passivated junction and low incremental resistance.
Is the P4SMA43CAHE3_A/H suitable for automotive applications?
Yes, the P4SMA43CAHE3_A/H is AEC-Q101 qualified and specifically designated for automotive use via the "HE3" suffix. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D. The P4SMA43CAHE3_A/H is commonly deployed in body control modules, ADAS sensor interfaces, and infotainment power rails where bidirectional surge protection is required.
Does the P4SMA43CAHE3_A/H have polarity markings on the package?
No, the P4SMA43CAHE3_A/H is a bidirectional TVS and carries no polarity marking on the SMA (DO-214AC) case. Its symmetrical construction means either terminal functions identically - eliminating orientation concerns during automated placement. This distinguishes it from unidirectional variants like P4SMA43AHE3_A/H, which feature a cathode band.
What is the standoff voltage rating for the P4SMA43CAHE3_A/H?
The standoff voltage (VWM) of the P4SMA43CAHE3_A/H is 36.8 V - the maximum DC or RMS voltage that can be continuously applied without triggering significant conduction. This value provides a 10% margin below the minimum breakdown voltage (40.9 V), ensuring reliable non-conducting operation during normal system operation while allowing rapid avalanche response during transients. The P4SMA43CAHE3_A/H holds this rating across its full operating temperature range.
How does the P4SMA43CAHE3_A/H compare to the P4SMA43AHE3_A/H variant?
The P4SMA43CAHE3_A/H is bidirectional, while the P4SMA43AHE3_A/H is unidirectional - differing only in polarity configuration and marking. Both share identical VBR, VC, PPPM, package, and AEC-Q101 qualification. The P4SMA43CAHE3_A/H replaces the cathode band with no marking and supports symmetrical clamping, making it ideal for AC-coupled or floating signal lines where polarity is undefined.
P4SMA43CAHE3_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:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA43CAHE3_A/H FAQ
1.How can I place an order for P4SMA43CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CAHE3_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 P4SMA43CAHE3_A/H reliable?
The price and inventory of P4SMA43CAHE3_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 P4SMA43CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA43CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CAHE3_A/H?
P4SMA43CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CAHE3_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 P4SMA43CAHE3_A/H?
For technical support, including P4SMA43CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA43CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA43CAHE3_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 P4SMA43CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA43CAHE3_A/H?
All P4SMA43CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CAHE3_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 P4SMA43CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA43CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43CAHE3_A/H 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 …
