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Vishay General Semiconductor - Diodes Division P6SMB47CAHM3/I
- Part No.:
- P6SMB47CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CAHM3/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,638
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Product details
Overview
P6SMB47CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB47CAHM3/I datasheet, P6SMB47CAHM3/I pinout, P6SMB47CAHM3/I application, or P6SMB47CAHM3/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified bidirectional clamping performance with low incremental surge resistance - critical for robust overvoltage protection in space-constrained, high-reliability designs.
Technical Context
The P6SMB47CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±47 V in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMB package enables automated placement on PCBs with minimal footprint.
It sustains repetitive 10/1000 μs pulses at 0.01% duty cycle, derating linearly above 25 °C ambient per Fig. 2, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead) - enabling reliable operation up to 150 °C junction temperature under defined pad layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC (Clamping) | 64.8 V at 9.3 A - Maximum voltage seen by protected circuit during 10/1000 μs transient; determines downstream component stress. |
| PPPM | 600 W - Peak transient energy absorption capability; supports protection against IEC 61000-4-5 Level 3 surges. |
| IPPM | 9.3 A - Peak current handled at VC; used with PCB trace impedance to estimate let-through energy. |
| TJ max. | 150 °C - Maximum junction temperature; sets thermal design limits for sustained surge repetition. |
| Package | SMB (DO-214AA) - 0.205" × 0.220" footprint; compatible with standard SMT reflow profiles including 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-609A Class 1a for bromine/chlorine content; supports green manufacturing requirements. |
| MSL Level 1 | No floor life limitation; can be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow. |
| 600 W peak pulse power | Handles 10/1000 μs surges up to 9.3 A without degradation; exceeds IEC 61000-4-5 open-circuit test levels. |
| Low clamping ratio (VC/VWM = 1.38) | Minimizes overvoltage stress on protected ICs; improves margin for 48 V system interfaces and CAN FD nodes. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Withstands 150 °C junction temperature and meets AEC-Q101, ensuring uninterrupted operation in under-hood environments. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage suppressor across input terminals, working in concert with series current-limiting resistors. Use Value: 64.8 V clamping voltage provides >20% margin above 48 V system rail, preventing false triggering of Schmitt-trigger inputs. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control Board |
|
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) primary protection to handle residual fast-rising transients. Use Value: Sub-1 ns response time captures high-frequency components missed by slower GDTs, reducing bit error rates. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Localized clamp across motor driver outputs and feedback sensing lines to prevent MCU reset or ADC corruption. Use Value: 600 W rating handles repeated 8.3 ms half-sine surges up to 100 A (IFSM-equivalent), matching motor startup stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47CA | Same VWM (47 V) and VC (64.8 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 3 or automotive load dump. | Select when board space is constrained and surge energy is <400 W; verify thermal margin with reduced copper area. |
| 1.5KE47CA | Same VWM/VC, but axial leaded DO-201 package; higher PPPM (1500 W), slower response due to lead inductance. | Requires through-hole assembly; not suitable for high-density SMT layouts or high-frequency transient suppression. | Choose only for legacy through-hole designs or where higher single-pulse energy handling is mandatory and layout permits leads. |
Compared with SMAJ47CA and 1.5KE47CA, the P6SMB47CAHM3/I uniquely balances 600 W surge capacity, AEC-Q101 qualification, SMB SMT compatibility, and low-profile packaging - making it the optimal choice for new automotive and industrial SMT designs requiring validated reliability and standardized reflow processing.
Availability
P6SMB47CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P6SMB47CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, designed to replace older SMB-style TVS devices with enhanced surge ratings, tighter parametric control, and extended qualification coverage.
FAQ
What does the "HM3/I" suffix mean in P6SMB47CAHM3/I?
The "HM3" suffix indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "I" denotes 13-inch tape-and-reel packaging (3200 units per reel). This distinguishes P6SMB47CAHM3/I from commercial-grade (M3/E3) or non-automotive variants, confirming its suitability for automotive electronics production. The full part number P6SMB47CAHM3/I must be specified to ensure correct material and qualification compliance.
Is P6SMB47CAHM3/I unidirectional or bidirectional?
P6SMB47CAHM3/I is a bidirectional TVS diode, as confirmed by the "CA" suffix and absence of cathode band marking. It clamps symmetrically for both positive and negative transients, making it ideal for AC-coupled lines, differential buses like RS-485, and dual-rail sensor interfaces. Unlike unidirectional variants (e.g., P6SMB47A), the P6SMB47CAHM3/I does not require polarity-aware placement on PCBs.
What is the maximum clamping voltage of P6SMB47CAHM3/I and at what current?
The maximum clamping voltage (VC) of P6SMB47CAHM3/I is 64.8 V, measured at a peak pulse current (IPPM) of 9.3 A using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the worst-case overvoltage imposed on protected circuitry during surge events. Designers must ensure downstream components tolerate ≤64.8 V under transient conditions.
Does P6SMB47CAHM3/I meet automotive qualification standards?
Yes, P6SMB47CAHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in Vishay's official specification (Document Number: 88370, Revision: 09-Jan-2024). It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114, validating its use in automotive powertrain, body, and chassis modules. The full part number P6SMB47CAHM3/I must be procured to guarantee this qualification level.
What is the thermal resistance of P6SMB47CAHM3/I and how does it affect layout?
P6SMB47CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, and junction-to-lead (RθJL) of 20 °C/W. Layout must replicate this pad area to achieve rated surge performance; reducing pad size increases thermal impedance, lowering sustainable pulse repetition rate and risking thermal runaway during repeated transients. The full part number P6SMB47CAHM3/I assumes adherence to this mechanical mounting condition.
P6SMB47CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
P6SMB47CAHM3/I FAQ
1.How can I place an order for P6SMB47CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CAHM3/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 P6SMB47CAHM3/I reliable?
The price and inventory of P6SMB47CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB47CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CAHM3/I?
P6SMB47CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CAHM3/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 P6SMB47CAHM3/I?
For technical support, including P6SMB47CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CAHM3/I requirements.
6.How does Aetrix verify that P6SMB47CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB47CAHM3/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 P6SMB47CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB47CAHM3/I?
All P6SMB47CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CAHM3/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 P6SMB47CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB47CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47CAHM3/I Tags
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