My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB43CAHM3_A/I
- Part No.:
- P6SMB43CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43CAHM3_A/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,342
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB43CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB 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 stand-off voltage (VWM), 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB43CAHM3_A/I datasheet, P6SMB43CAHM3_A/I pinout, P6SMB43CAHM3_A/I application, or P6SMB43CAHM3_A/I equivalent, this device delivers AEC-Q101-qualified transient suppression in SMB (DO-214AA) package with halogen-free, RoHS-compliant construction, low incremental surge resistance, and fast response time - critical for ESD and load-switching surge protection in space-constrained designs.
Technical Context
The P6SMB43CAHM3_A/I operates as a bidirectional avalanche diode, symmetrically clamping voltage surges in both polarities without polarity marking. Its silicon junction is glass passivated for stable leakage performance and long-term reliability under repetitive transients.
It delivers 600 W peak pulse power handling per 10/1000 µs waveform at TA = 25 °C, derated linearly above 25 °C with RθJA = 100 °C/W, and supports continuous power dissipation of 5.0 W on infinite heatsink at 50 °C. The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1 mA - defines precise avalanche onset threshold for bidirectional clamping |
| VWM | 36.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 59.3 V at 10.1 A - clamped voltage during 600 W transient, limiting stress on downstream components |
| IPPM | 10.1 A - peak pulse current capability with 10/1000 µs waveform, enabling robust surge immunity |
| PPPM | 600 W - standardized surge energy absorption capacity, validated per REA-defined waveform |
| TJ max. | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - surface-mount outline with 0.205" × 0.220" footprint, optimized for automated placement |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-020 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line or ground reference |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical avalanche junction; functionally identical to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables reliable suppression of high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEM supply chains |
| Low incremental surge resistance | Minimizes VC – VBR differential, reducing let-through voltage during fast-rising transients |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, simplifying manufacturing and reducing process risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across signal lines or supply rails upstream of interface ICs. Use Value: Limits transient voltage to ≤59.3 V during 10.1 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance and filtering. Use Value: Withstands repeated 600 W pulses without parameter shift, ensuring long-term reliability in factory automation environments. |
| Telecom Power Rail Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Clamping voltage spikes on 48 V PoE-powered Ethernet switch ports and base station power supplies. IC Role / Device Role / Timing Role: Secondary surge suppressor after primary MOV/GDT stages, providing precise low-clamp backup protection. Use Value: 36.8 V VWM allows safe operation with 48 V nominal rail while clamping to 59.3 V - within safe margin of 60 V-rated downstream regulators. |
Use Scenario: Suppressing back-EMF transients generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs to absorb inductive kickback. Use Value: 10.1 A IPPM and 600 W rating handle typical motor turn-off surges without thermal runaway or parametric drift. |
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 | Same VBR/VC specs but rated for 600 W with 8.3 ms half-sine surge; slightly higher VWM (37.0 V); non-AEC-Q101 | Preferred for commercial/industrial AC/DC power supplies where automotive qualification is not required | Select when cost sensitivity outweighs AEC-Q101 need and board-level reflow profile permits non-MSL-1 handling |
| 1.5SMC43CA | Higher 1500 W rating, larger SMC (DO-214AB) package; same VBR/VC; VWM = 36.8 V; AEC-Q101 optional | Suitable for high-energy surge environments (e.g., outdoor telecom, solar inverters) requiring greater margin | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and PCB layout accommodates larger footprint |
Compared with SMBJ43CA and 1.5SMC43CA, the P6SMB43CAHM3_A/I uniquely combines AEC-Q101 qualification, MSL Level 1 compatibility, halogen-free construction, and SMB footprint - making it optimal for automotive-grade, high-volume SMT production where reliability, regulatory compliance, and assembly efficiency are jointly prioritized.
Availability
P6SMB43CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power rails, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB43CAHM3_A/I 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 TVS devices with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The P6SMB Series was engineered specifically for surface-mount transient suppression in space-constrained, high-reliability applications - balancing 600 W surge capability, low clamping voltage, and AEC-Q101 compliance for automotive and industrial end equipment.
FAQ
What does the "CA" suffix indicate in P6SMB43CAHM3_A/I?
The "CA" suffix denotes that P6SMB43CAHM3_A/I is a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P6SMB43A), the CA version provides symmetrical clamping in both polarities, eliminating the need for polarity-aware placement and enabling use across AC-coupled or floating signal lines. This is confirmed in Vishay's P6SMB datasheet revision 09-Jan-2024, section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P6SMB43CAHM3_A/I qualified for automotive applications?
Yes, P6SMB43CAHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in Vishay's ordering information table (page 3). The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction - verified per test conditions including temperature cycling, humidity bias HAST, and accelerated life testing. This makes P6SMB43CAHM3_A/I suitable for under-hood and cabin ECU applications.
What is the maximum clamping voltage of P6SMB43CAHM3_A/I and under what test condition?
The maximum clamping voltage of P6SMB43CAHM3_A/I is 59.3 V, measured at a peak pulse current (IPPM) of 10.1 A using the standardized 10/1000 µs double-exponential waveform per REA definition. This value is specified in the Electrical Characteristics table (page 2) of the Vishay P6SMB datasheet and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events.
Does P6SMB43CAHM3_A/I have polarity markings on the package?
No, P6SMB43CAHM3_A/I has no polarity markings because it is a bidirectional device. As stated in the Mechanical Data section of the Vishay datasheet: "no marking on bidirectional types". The SMB (DO-214AA) package is symmetric, and both terminals serve identically as either anode or cathode depending on transient polarity - simplifying layout and eliminating orientation-dependent assembly errors.
What is the thermal resistance from junction to ambient for P6SMB43CAHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for P6SMB43CAHM3_A/I is 100 °C/W, as specified in the Thermal Characteristics table (page 3) of the Vishay P6SMB datasheet. This value assumes mounting on minimum recommended copper pad layout (0.2" × 0.2" per terminal); actual RθJA improves with increased copper area and multilayer board thermal vias.
P6SMB43CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 10.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB43CAHM3_A/I FAQ
1.How can I place an order for P6SMB43CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43CAHM3_A/I 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 P6SMB43CAHM3_A/I reliable?
The price and inventory of P6SMB43CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB43CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43CAHM3_A/I?
P6SMB43CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43CAHM3_A/I 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 P6SMB43CAHM3_A/I?
For technical support, including P6SMB43CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB43CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43CAHM3_A/I 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 P6SMB43CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB43CAHM3_A/I?
All P6SMB43CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43CAHM3_A/I, 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 P6SMB43CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB43CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43CAHM3_A/I 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
