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Vishay General Semiconductor - Diodes Division P6SMB56CAHM3/I
- Part No.:
- P6SMB56CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,592
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Product details
Overview
P6SMB56CAHM3/I 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 56 V standoff voltage (VWM), 62.7 V minimum breakdown voltage (VBR), 77.0 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB56CAHM3/I datasheet, P6SMB56CAHM3/I pinout, P6SMB56CAHM3/I application, or P6SMB56CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), bidirectional polarity behavior, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR (62.7–69.3 V), VWM (56 V), and VC (77.0 V) specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling protection against ESD, lightning-induced surges, and inductive switching transients.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, supported by RθJL = 20 °C/W and RθJA = 100 °C/W. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive underhood and body electronics applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 56 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 62.7 V min / 69.3 V max at 1.0 mA - Voltage at which avalanche conduction initiates; tight tolerance ensures predictable clamping onset. |
| VC (Clamping Voltage) | 77.0 V max at 7.8 A IPPM - Peak voltage seen by downstream components during surge; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - Sustains high-energy transients without failure; enables robust protection in harsh environments. |
| ID (Reverse Leakage) | ≤1.0 μA at 56 V - Minimal standby current avoids loading sensitive analog or low-power circuits. |
| TJ max | 150 °C - Enables operation in under-hood automotive and industrial enclosures without thermal derating penalties. |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly; 0.205" × 0.220" pad layout per Vishay mechanical drawing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically regardless of orientation across the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | Accepts surge current during positive-going transients; forms one half of symmetrical clamping path. |
| Cathode | Transient current entry (forward bias) | Accepts surge current during negative-going transients; completes bidirectional clamping loop with anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use including temperature cycling, humidity, and mechanical shock per stress test requirements. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020; supports environmentally regulated industrial and automotive supply chains. |
| 600 W peak pulse power | Handles repetitive 10/1000 μs surges up to 0.01% duty cycle without degradation - suitable for motor drive and relay coil suppression. |
| Low clamping ratio (VC/VBR ≈ 1.23) | Minimizes overvoltage stress on protected ICs; improves system-level surge immunity margin versus competing TVS devices. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT manufacturing flow. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protects microcontroller GPIOs and CAN transceiver I/O pins from load dump and alternator ripple in BCMs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt transients before reaching ASICs. Use Value: Withstands 600 W surges while maintaining ≤77.0 V clamping - prevents latch-up and permanent damage to 5 V/3.3 V logic interfaces. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from inductive kickback of solenoid valves and contactors. IC Role / Device Role / Timing Role: Primary transient suppressor mounted adjacent to terminal block to intercept surges before optocoupler or level-shifter inputs. Use Value: 56 V VWM aligns with 24 V nominal system; 77.0 V VC ensures downstream 30 V-rated input protection ICs remain within safe operating area. |
| Telecom Power Supply Interface | Automotive Sensor Signal Line |
|
Use Scenario: Guards AC/DC adapter output rails and DC-DC converter feedback networks against lightning-induced surges on telecom infrastructure equipment. IC Role / Device Role / Timing Role: Secondary-stage TVS placed after primary MOVs to clamp residual overshoot and high-frequency ringing. Use Value: Fast <1 ns response and low incremental surge resistance limit voltage overshoot during multi-kV surge events per IEC 61000-4-5. |
Use Scenario: Protects analog outputs of pressure, temperature, and position sensors connected to vehicle ECUs via long harness runs. IC Role / Device Role / Timing Role: Localized TVS at sensor connector to suppress coupled noise from adjacent high-current cables (e.g., starter motor). Use Value: ≤1.0 μA leakage at 56 V avoids signal offset errors in millivolt-range sensor outputs; bidirectional symmetry handles both polarity transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Same SMB package, 58 V VWM, 64.4–71.2 V VBR, 93.6 V VC at 6.4 A - higher clamping voltage and lower PPPM (400 W). | Less effective for 24 V systems requiring tight clamping margin; not AEC-Q101 qualified. | Select when cost sensitivity outweighs automotive qualification or clamping performance needs. |
| SMCJ58CA | Larger SMC (DO-214AB) package, same 58 V VWM, but 600 W PPPM and 93.6 V VC - higher thermal mass but larger footprint. | Requires PCB redesign; better suited for higher average power dissipation in industrial motor drives. | Choose only if board space allows SMC and thermal budget exceeds SMB limits under repetitive surge conditions. |
Compared with SMAJ58CA and SMCJ58CA, P6SMB56CAHM3/I delivers tighter clamping (77.0 V vs. ≥93.6 V), AEC-Q101 qualification, and halogen-free compliance in the smallest standard SMB footprint - making it optimal for space-constrained, automotive-grade designs where voltage margin and regulatory alignment are critical.
Availability
P6SMB56CAHM3/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom power interfaces, and sensor signal conditioning requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB56CAHM3/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, TVS devices, and power MOSFETs for industrial, automotive, and computing markets.
The P6SMB Series targets high-reliability transient suppression in space-constrained surface-mount applications, with emphasis on AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and surge repetition rates.
FAQ
What is the clamping voltage of P6SMB56CAHM3/I at its rated peak pulse current?
The P6SMB56CAHM3/I has a maximum clamping voltage (VC) of 77.0 V at 7.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The low clamping ratio (VC/VBR ≈ 1.23) confirms strong avalanche uniformity and minimal voltage overshoot during transient suppression.
Is P6SMB56CAHM3/I qualified for automotive applications?
Yes, P6SMB56CAHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life per AEC-Q101 requirements - making it suitable for under-hood and body electronics in passenger vehicles and commercial vehicles.
What does the "CA" suffix mean in P6SMB56CAHM3/I?
The "CA" suffix in P6SMB56CAHM3/I denotes a bidirectional configuration. Unlike unidirectional variants (e.g., P6SMB56AHM3/I), the CA version provides symmetrical clamping in both polarities - essential for protecting AC-coupled lines, differential buses like CAN or RS-485, and any signal path where voltage transients may occur with either polarity relative to ground.
What is the maximum junction temperature rating for P6SMB56CAHM3/I?
The P6SMB56CAHM3/I has a maximum junction temperature (TJ max) of +150 °C, as specified in Vishay's datasheet Document Number 88370. This rating enables reliable operation in high-ambient environments such as engine compartments, industrial control cabinets, and enclosed telecom power supplies - provided thermal design accounts for RθJA = 100 °C/W and appropriate copper pad area (0.2" × 0.2") is used.
How does the halogen-free construction of P6SMB56CAHM3/I impact its compliance status?
The "HM3" suffix confirms P6SMB56CAHM3/I is halogen-free, RoHS-compliant, and meets JEDEC J-STD-020 MSL Level 1. Halogen-free status satisfies IEC 61249-2-21 and customer-specific environmental mandates, particularly in automotive Tier 1 supply chains and EU-based industrial equipment. It also supports safer end-of-life processing without release of corrosive halogen gases during recycling or incineration.
P6SMB56CAHM3/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):
- 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:
- 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)
P6SMB56CAHM3/I FAQ
1.How can I place an order for P6SMB56CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3/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 P6SMB56CAHM3/I reliable?
The price and inventory of P6SMB56CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3/I?
P6SMB56CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3/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 P6SMB56CAHM3/I?
For technical support, including P6SMB56CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3/I requirements.
6.How does Aetrix verify that P6SMB56CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3/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 P6SMB56CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3/I?
All P6SMB56CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3/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 P6SMB56CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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