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Vishay General Semiconductor - Diodes Division P6SMB56CA-E3/5B
- Part No.:
- P6SMB56CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CA-E3/5B.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB56CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), with a 47.8 V standoff voltage (VWM), 53.2–58.8 V breakdown voltage (VBR at 1 mA), and 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current. It protects signal lines and power rails in automotive sensor interfaces, industrial I/O modules, and telecom line cards against ESD and inductive switching transients.
For engineers reviewing the P6SMB56CA-E3/5B datasheet, P6SMB56CA-E3/5B pinout, P6SMB56CA-E3/5B application, or P6SMB56CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification readiness (via HE3/HM3 variants) for automotive-grade transient suppression.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 47.8 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold in either polarity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance for consistent clamping performance across repetitive surges.
The SMB package enables automated placement and supports thermal dissipation up to 5.0 W continuous power on infinite heatsink at 50 °C, with junction temperature limited to 150 °C. Its bidirectional symmetry eliminates polarity concerns during board layout-no cathode marking required-and simplifies protection of AC-coupled or differential signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47.8 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 53.2–58.8 V at 1 mA - Confirmed breakdown range ensuring reliable triggering without premature conduction. |
| VC (Clamping) | 77.0 V at 7.8 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream ICs. |
| PPPM | 600 W - Sustains 10/1000 μs transients at 0.01% duty cycle; suitable for lightning-induced and inductive-switching events. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires minimum 5.0 mm × 5.0 mm copper pads per terminal for rated power handling. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures without derating. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height, 3.94 mm length, and J-STD-002 solderable matte tin leads. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; both terminals are electrically symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path (bidirectional) | Either terminal conducts surge current toward the other during overvoltage in either polarity; no PCB orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity constraints. |
| 600 W peak pulse rating (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5.0 mm × 5.0 mm copper pads. |
| Glass passivated junction | Ensures ±5% VBR tolerance and stable leakage (<1 μA at VWM) over 1000-hour HTOL testing. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without baking; compatible with high-volume SMT assembly lines. |
| RoHS-compliant, matte tin plating | Meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2; eliminates post-solder cleaning requirements. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load-dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground to clamp transients before they reach the transceiver's input stage. Use Value: Limits induced voltage to ≤77.0 V during 100 A/10 ms load dump, preventing latch-up or gate oxide damage in 5 V-tolerant receivers. |
Use Scenario: Safeguarding 4–20 mA current-loop inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional clamp across loop terminals to suppress common-mode transients induced by nearby motor drives. Use Value: Maintains loop integrity by clamping <100 ns transients to <80 V, avoiding ADC saturation or op-amp rail-to-rail excursion. |
| Telecom Line Card Protection | Consumer USB Port ESD |
Use Scenario: Secondary protection on xDSL or Ethernet PHY lines subjected to lightning-induced surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Downstream TVS after gas discharge tube (GDT) primary protection to handle residual fast-rising energy. Use Value: Clamps 1 kV/0.5 μs ring wave to <77 V within 1 ns, preserving PHY IC reliability without adding capacitance to data path. |
Use Scenario: Board-level ESD protection for USB 2.0 D+/D− lines in portable audio devices and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional clamp placed adjacent to connector to divert IEC 61000-4-2 ±8 kV contact discharge. Use Value: Prevents data corruption by limiting transient overshoot to <77 V while maintaining signal integrity up to 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Same SMB package, 58 V VWM, 64.4–71.4 V VBR, 93.6 V VC at 6.4 A; higher clamping voltage (+16.6 V) and lower IPPM. | Less effective clamping margin for 48 V systems; better suited for 56 V nominal rails where tighter VWM/VC ratio is acceptable. | Select SMBJ58CA only if system VCC > 52 V and clamping headroom > 15 V is tolerable. |
| 1.5SMC56CA | Same electrical specs (47.8 V VWM, 53.2–58.8 V VBR, 77.0 V VC), but in larger SMC (DO-214AB) package; 1.5 kW PPPM. | Higher surge capacity suits infrequent high-energy events (e.g., outdoor telecom); footprint incompatible with SMB-restricted layouts. | Choose 1.5SMC56CA when surge repetition rate is low and PCB space allows SMC footprint; not drop-in replaceable. |
Compared with SMBJ58CA, P6SMB56CA-E3/5B offers tighter clamping (77.0 V vs. 93.6 V) critical for 48 V rail protection; versus 1.5SMC56CA, it trades surge headroom for compactness-ideal for dense automotive ECUs where SMB is mandated.
Availability
P6SMB56CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line card protection requiring stable component supply, RoHS compliance, and MSL Level 1 reflow compatibility.
Supply support for P6SMB56CA-E3/5B 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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, industry-qualified components for automotive, industrial, and computing markets.
The P6SMB Series targets cost-sensitive, high-volume transient suppression needs in surface-mount applications-optimized for automated assembly, AEC-Q101 readiness, and robust clamping performance in SMB-constrained layouts.
FAQ
What is the clamping voltage of P6SMB56CA-E3/5B at its rated peak pulse current?
The P6SMB56CA-E3/5B has a maximum clamping voltage (VC) of 77.0 V at 7.8 A peak pulse current (IPPM) under the standard 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 surge events. The P6SMB56CA-E3/5B maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C) with minimal drift due to its glass-passivated junction.
Is P6SMB56CA-E3/5B suitable for automotive applications?
P6SMB56CA-E3/5B is RoHS-compliant and manufactured to Vishay's commercial-grade specifications; AEC-Q101 qualification is available via the HE3 variant (e.g., P6SMB56CAHE3_B). While the P6SMB56CA-E3/5B itself is not AEC-Q101 certified, its construction-glass-passivated chip, MSL Level 1 rating, and 150 °C TJ max-aligns with automotive environmental requirements. For production automotive use, specify the HE3 suffix version of P6SMB56CA-E3/5B to ensure formal qualification.
How does the bidirectional design of P6SMB56CA-E3/5B affect PCB layout?
The P6SMB56CA-E3/5B has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment-either terminal may connect to signal or ground. This simplifies routing for differential pairs (e.g., RS-485), AC-coupled lines, or floating power domains. Unlike unidirectional TVS diodes, the P6SMB56CA-E3/5B eliminates risk of reverse installation and reduces BOM complexity in dual-rail protection schemes.
What is the thermal resistance of P6SMB56CA-E3/5B, and how does it impact power handling?
P6SMB56CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. This means a 5.0 W continuous power dissipation (PD) raises junction temperature by 500 °C above ambient-so derating is essential. At 25 °C ambient, the device supports only ~0.5 W continuous dissipation before reaching its 150 °C TJ limit; thus, P6SMB56CA-E3/5B is intended for transient, not steady-state, power handling.
Can P6SMB56CA-E3/5B be used as a direct replacement for P6SMB56A-E3/5B?
No-P6SMB56CA-E3/5B is bidirectional, while P6SMB56A-E3/5B is unidirectional. Their VBR and VC values differ: P6SMB56A-E3/5B has VBR = 53.2–58.8 V and VC = 96.8 V (at 6.2 A), whereas P6SMB56CA-E3/5B clamps at 77.0 V (at 7.8 A). Substituting them requires verifying circuit polarity, clamping margin, and surge current capability. The "CA" suffix explicitly denotes bidirectional functionality and is not interchangeable with "A" without redesign.
P6SMB56CA-E3/5B 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:
- 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 (SMB)
P6SMB56CA-E3/5B FAQ
1.How can I place an order for P6SMB56CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CA-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB56CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB56CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CA-E3/5B?
P6SMB56CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CA-E3/5B 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-E3/5B?
For technical support, including P6SMB56CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB56CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB56CA-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB56CA-E3/5B?
All P6SMB56CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CA-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB56CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CA-E3/5B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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