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Vishay General Semiconductor - Diodes Division P6SMB56CA-M3/5B
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- Part No.:
- P6SMB56CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CA-M3/5B.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,704
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Product details
Overview
P6SMB56CA-M3/5B 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 or power lines. It features a 56 V breakdown voltage (VBR min/max = 53.2–58.8 V at 1.0 mA), 47.8 V stand-off voltage (VWM), 77.0 V maximum clamping voltage (VC) at 7.8 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 industrial and automotive electronics.
For engineers reviewing the P6SMB56CA-M3/5B datasheet, P6SMB56CA-M3/5B pinout, P6SMB56CA-M3/5B application, or P6SMB56CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.61), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness (via HM3_B variant).
Technical Context
The P6SMB56CA-M3/5B operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while its low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The device meets J-STD-020 MSL Level 1 and is rated for repetitive 0.01% duty cycle pulses, making it suitable for protection circuits where transient energy is infrequent but high amplitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1.0 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| Stand-off Voltage VWM | 47.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA; sets safe operating margin below VBR |
| Clamping Voltage VC | 77.0 V at 7.8 A (10/1000 μs) - limits protected circuit voltage during surge, enabling robust IC/MOSFET survival |
| Peak Pulse Power PPPM | 600 W - sustains single transient events up to 600 W without failure, per standard 10/1000 μs waveform |
| Package | SMB (DO-214AA) - surface-mount footprint (5.59 mm × 4.06 mm) optimized for automated placement and thermal pad layout |
| Operating Temperature | −65 °C to +150 °C - supports deployment in under-hood automotive, industrial control, and outdoor telecom environments |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); MSL Level 1, J-STD-020; qualified per JESD201 Class 2 whisker test |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions 5.59 mm × 4.06 mm × 2.20 mm; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as anode or cathode depending on transient polarity; enables AC-line or differential-signal protection without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles high-energy transients common in motor drives and relay switching without degradation |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot across protected devices, reducing stress on downstream 5 V or 3.3 V logic |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, streamlining SMT assembly for high-volume production |
| AEC-Q101 qualification path | HM3_B variant available - supports automotive subsystems requiring validated reliability for engine control or ADAS sensors |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from 24 V DC solenoids and brushed motors. IC Role / Device Role / Timing Role: Bidirectional TVS placed across motor coil terminals and MCU input pins to clamp ±100 V transients within 1 ns. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic by limiting voltage to ≤77.0 V during 600 W surge events. |
Use Scenario: Shielding CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff protection element on differential signal pairs, leveraging symmetrical clamping to preserve signal integrity. Use Value: Maintains <1.0 μA leakage at 47.8 V, ensuring minimal impact on sensor bias networks while surviving ISO 7637-2 Pulse 5a (75 V/350 ms). |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
|
Use Scenario: Safeguarding 48 V PoE injectors and splitters against lightning-induced surges on Ethernet cable pairs. IC Role / Device Role / Timing Role: Primary line-to-line TVS on secondary-side DC output rails, coordinated with upstream GDTs for staged clamping. Use Value: Delivers 77.0 V clamping at 7.8 A with <200 ps response time, meeting IEC 61000-4-5 Level 4 (4 kV) requirements. |
Use Scenario: Overvoltage suppression on VBUS and CC lines in portable chargers and docking stations exposed to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse and EMI filter, absorbing residual transients missed by upstream stages. Use Value: Halogen-free M3 construction complies with IEC 61200-4-11 and supports lead-free reflow profiles up to 260 °C peak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/5B | Unidirectional; VWM = 49.5 V, VC = 93.6 V at 6.4 A; same SMB package | Requires polarity-aware layout; higher clamping voltage reduces protection margin for 5 V systems | Select when unidirectional DC rail protection is sufficient and lower cost is prioritized over bidirectional flexibility |
| SMCJ58CA-T | Bidirectional; higher PPPM = 1500 W; larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Occupies 2.3× PCB area; suited for higher-energy industrial mains inputs, not space-constrained signal lines | Choose for 1500 W surge immunity where board space permits and VC = 93.6 V remains acceptable |
Compared with SMAJ58A-E3/5B and SMCJ58CA-T, the P6SMB56CA-M3/5B delivers optimal balance of bidirectional protection, compact SMB footprint, and low clamping voltage - making it preferred for space-limited 24–48 V signal and interface protection where polarity-agnostic operation is required.
Availability
P6SMB56CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power supply input, and consumer USB-C port protection requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification path support.
Supply support for P6SMB56CA-M3/5B 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, thermal performance, and automotive-grade qualification.
The P6SMB Series targets cost-sensitive yet robust transient suppression in commercial and automotive applications, delivering standardized 600 W surge capability across 6.8–540 V ratings in compact SMB packaging.
FAQ
What is the clamping voltage of the P6SMB56CA-M3/5B at its rated peak pulse current?
The P6SMB56CA-M3/5B has a maximum clamping voltage (VC) of 77.0 V at 7.8 A peak pulse current, measured using the standard 10/1000 μs double-exponential waveform. This value is critical for determining whether downstream components like 5 V microcontrollers or 12 V gate drivers remain within their absolute maximum voltage ratings during surge events. The P6SMB56CA-M3/5B achieves this clamping performance while maintaining low leakage and stable breakdown behavior across temperature.
Is the P6SMB56CA-M3/5B suitable for automotive applications?
Yes - the P6SMB56CA-M3/5B is halogen-free and RoHS-compliant (M3 suffix), and its base P6SMB56CA-HM3_B variant is AEC-Q101 qualified for automotive use. While the P6SMB56CA-M3/5B itself is commercial-grade, it shares identical electrical and thermal characteristics with the qualified version and is commonly deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power rails. Engineers should specify HM3_B for production releases requiring formal qualification documentation.
How does the bidirectional design of the P6SMB56CA-M3/5B affect PCB layout?
The P6SMB56CA-M3/5B has no polarity marking and functions identically in either orientation, simplifying PCB layout by eliminating orientation checks during automated placement and reducing risk of assembly errors. This symmetry allows direct placement across differential signal pairs (e.g., RS-485, CAN) or AC-coupled lines without concern for anode/cathode alignment. The P6SMB56CA-M3/5B's SMB footprint also supports standard 0.2" × 0.2" copper pads per terminal, enabling consistent thermal dissipation regardless of mounting direction.
What is the maximum steady-state power dissipation for the P6SMB56CA-M3/5B?
The P6SMB56CA-M3/5B has a maximum steady-state power dissipation (PD) of 5.0 W at TA = 50 °C on an infinite heatsink. In typical PCB layouts with 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient - for example, at 70 °C ambient, usable power drops to ~3.5 W. This rating governs continuous leakage-related heating and must be considered alongside transient surge duty cycle (0.01% max) to ensure long-term reliability of the P6SMB56CA-M3/5B in thermally constrained designs.
Does the P6SMB56CA-M3/5B meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes - the P6SMB56CA-M3/5B meets J-STD-020 MSL Level 1, meaning it has unlimited floor life and requires no baking prior to lead-free reflow soldering. Its maximum peak reflow temperature is rated at 260 °C, fully compatible with standard Pb-free profiles. This eliminates handling overhead in high-volume SMT lines and ensures consistent solder joint formation without moisture-induced popcorn cracking - a key reliability advantage confirmed in Vishay's qualification testing for the P6SMB56CA-M3/5B.
P6SMB56CA-M3/5B 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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56CA-M3/5B FAQ
1.How can I place an order for P6SMB56CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CA-M3/5B 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 P6SMB56CA-M3/5B reliable?
The price and inventory of P6SMB56CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB56CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CA-M3/5B?
P6SMB56CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CA-M3/5B 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 P6SMB56CA-M3/5B?
For technical support, including P6SMB56CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB56CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB56CA-M3/5B 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 P6SMB56CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB56CA-M3/5B?
All P6SMB56CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CA-M3/5B, 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 P6SMB56CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB56CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CA-M3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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