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Vishay General Semiconductor - Diodes Division P6SMB47CA-M3/52
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- Part No.:
- P6SMB47CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47CA-M3/52.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,375
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Product details
Overview
P6SMB47CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 40.2 V standoff voltage (VWM), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and ICs in industrial and automotive electronics.
For engineers reviewing the P6SMB47CA-M3/52 datasheet, P6SMB47CA-M3/52 pinout, P6SMB47CA-M3/52 application, or P6SMB47CA-M3/52 equivalent, this part delivers verified bidirectional transient suppression with halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification readiness via HM3 suffix variants - critical for ESD and load-switching surge protection in space-constrained PCB layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports rapid energy dissipation during transient events.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its 10/1000 μs waveform response aligns with IEC 61000-4-5 surge immunity requirements for industrial equipment and automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 40.2 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 44.7–49.4 V at 1 mA - Confirmed voltage range where device enters avalanche breakdown; ensures predictable turn-on under transient stress. |
| VC (Clamping Voltage) | 64.8 V at 9.3 A IPPM - Peak voltage seen across protected circuit during 10/1000 μs surge; directly limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability per single 10/1000 μs event; enables robust protection against lightning-induced surges. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; optimized for automated placement and thermal pad layout per JEDEC standards. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 (260 °C peak reflow). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current from either direction; connects to line under protection (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or return rail during clamping; requires low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional transient suppression | Enables single-device protection of AC, differential, or floating signal lines without polarity concerns - reduces BOM count vs. dual unidirectional devices. |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in automotive load-dump or industrial motor switching - exceeds IEC 61000-4-5 Level 4 requirements. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 μA) over temperature and lifetime - critical for low-power sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking - simplifies manufacturing flow and avoids moisture-related popcorning. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance mandates for global industrial and automotive markets while maintaining identical electrical performance to E3 variants. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors connected to vehicle ECUs against ISO 7637-2 pulse 1 and pulse 2a transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor signal line and chassis ground, absorbing negative and positive voltage spikes. Use Value: Limits induced voltage to ≤64.8 V during 100 V/50 ms transients, preventing damage to 5 V ADC inputs and ensuring signal integrity across temperature ranges. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to ground potential differences and inductive switching noise. IC Role / Device Role / Timing Role: Differential-line TVS mounted across A/B bus lines to clamp common-mode surges up to ±30 kV ESD (IEC 61000-4-2) and 1 kV fast transients (IEC 61000-4-4). Use Value: Maintains bus functionality during 9.3 A surge events by clamping within 1 ns, avoiding latch-up or permanent failure of MAX1487-level transceivers. |
| Consumer USB-C Port ESD Protection | Power Supply Input Surge Suppression |
|
Use Scenario: Secondary-level ESD protection on USB-C CC and SBU lines in portable audio docks and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed after primary TVS array to handle residual fast transients missed by front-end filtering. Use Value: Adds <1 pF junction capacitance (per diode) while clamping ±15 kV contact discharge to <65 V - preserving USB 2.0 signal integrity up to 480 Mbps. |
Use Scenario: Input-stage transient suppression on 24 V DC power rails feeding industrial controllers and LED drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to shunt load-dump surges (ISO 16750-2) before they reach upstream regulators and MOSFETs. Use Value: Absorbs 600 W peak energy from 35 V/100 ms pulses, limiting rail overshoot to 64.8 V and preventing overvoltage shutdown of 36 V-rated DC/DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ45CA | Same SMB package, 45 V VWM, 49.9–55.1 V VBR, 73 V VC at 8.2 A - higher clamping voltage, lower PPPM (400 W). | Less effective for systems requiring strict <65 V clamping; suitable only where 73 V rail tolerance exists. | Select when cost sensitivity outweighs clamping performance; verify system-level VMAX margin allows 73 V. |
| SMCJ43CA | SMC (DO-214AB) package, 43 V VWM, 47.8–52.8 V VBR, 69.4 V VC at 8.6 A - larger footprint, higher PPPM (1500 W), same bidirectional function. | Requires PCB redesign for 7.11 mm × 6.22 mm pad layout; overqualified for 600 W needs but offers headroom for future surge upgrades. | Choose when board space permits and long-term surge immunity scalability is prioritized over miniaturization. |
Compared with SMAJ45CA and SMCJ43CA, P6SMB47CA-M3/52 delivers optimal balance of compact SMB footprint, precise 40.2 V standoff, and 64.8 V clamping - making it the preferred choice for space-constrained industrial and automotive designs where exact voltage coordination with 5 V or 24 V rails is essential.
Availability
P6SMB47CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply input stages requiring stable component supply, halogen-free compliance, and MSL Level 1 reflow compatibility.
Supply support for P6SMB47CA-M3/52 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 passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series targets high-reliability transient suppression in space-constrained applications, with design focus on consistent clamping performance, low leakage, and seamless integration into automated SMT lines for automotive, industrial, and consumer electronics.
FAQ
What is the maximum clamping voltage of the P6SMB47CA-M3/52 under a 10/1000 μs surge?
The P6SMB47CA-M3/52 has a maximum clamping voltage (VC) of 64.8 V at 9.3 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88370 and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings. The P6SMB47CA-M3/52 maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the P6SMB47CA-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
The P6SMB47CA-M3/52 itself is not AEC-Q101 qualified; however, Vishay offers the functionally identical P6SMB47CAHM3_B/H variant (with HM3_B suffix) that carries full AEC-Q101 qualification for automotive use. The P6SMB47CA-M3/52 shares identical electrical characteristics, SMB package dimensions, and halogen-free RoHS compliance - making it suitable for industrial and commercial applications where AEC-Q101 is not mandated. Always verify qualification status using the full ordering code.
How does the bidirectional nature of the P6SMB47CA-M3/52 affect its PCB layout?
The P6SMB47CA-M3/52 has no polarity marking and functions identically in either orientation, eliminating orientation-dependent placement errors during automated assembly. Its symmetrical anode/cathode terminals allow direct placement across differential lines (e.g., RS-485 A/B) or AC-coupled signals without directional routing constraints. Layout must still maintain short, low-inductance traces to ground - especially for the cathode connection - to preserve sub-nanosecond response and avoid voltage overshoot during fast transients.
What is the thermal resistance of the P6SMB47CA-M3/52, and how does it impact power derating?
The P6SMB47CA-M3/52 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. This value governs steady-state power dissipation limits: at 50 °C ambient, its 5.0 W rated power (PD) drops to ~3.3 W at 85 °C ambient per Vishay's derating curve (Figure 2). For transient suppression, thermal mass dominates - so RθJA primarily affects sustained leakage or repetitive surge duty cycles, not single-event clamping.
Can the P6SMB47CA-M3/52 be used as a direct replacement for unidirectional TVS diodes like P6SMB47A-M3/52?
No - the P6SMB47CA-M3/52 is strictly bidirectional and cannot replace unidirectional types such as P6SMB47A-M3/52 in circuits requiring forward conduction or DC bias blocking in one direction only. While both share identical VWM, VBR, and VC values, the unidirectional version blocks current in reverse bias until breakdown, whereas the CA version conducts equally in both polarities. Substitution would compromise circuit functionality in DC-coupled or rectifier-assisted protection schemes.
P6SMB47CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB47CA-M3/52 FAQ
1.How can I place an order for P6SMB47CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47CA-M3/52 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 P6SMB47CA-M3/52 reliable?
The price and inventory of P6SMB47CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47CA-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB47CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47CA-M3/52?
P6SMB47CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47CA-M3/52 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 P6SMB47CA-M3/52?
For technical support, including P6SMB47CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47CA-M3/52 requirements.
6.How does Aetrix verify that P6SMB47CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB47CA-M3/52 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 P6SMB47CA-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB47CA-M3/52?
All P6SMB47CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47CA-M3/52, 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 P6SMB47CA-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB47CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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