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Vishay General Semiconductor - Diodes Division P6SMB56CAHE3_A/H
- Part No.:
- P6SMB56CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHE3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,059
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Product details
Overview
P6SMB56CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 56 V standoff voltage (VWM), 600 W peak pulse power (10/1000 μs), and clamping voltage of 77.0 V at 7.8 A peak pulse current - deployed for overvoltage protection on automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the P6SMB56CAHE3_A/H datasheet, P6SMB56CAHE3_A/H pinout, P6SMB56CAHE3_A/H application, or P6SMB56CAHE3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, 150 °C maximum junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient events exceeding its reverse standoff voltage (VWM = 47.8 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown behavior and long-term reliability under repetitive surge stress.
Designed for high-reliability automotive applications, P6SMB56CAHE3_A/H meets AEC-Q101 qualification requirements and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Thermal resistance is specified at RθJA = 100 °C/W (typical) and RθJL = 20 °C/W (typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 47.8 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 53.2–58.8 V at 1 mA - guaranteed avalanche onset range defining clamping threshold precision |
| VC (Clamping Voltage) | 77.0 V at IPPM = 7.8 A - peak voltage seen by protected circuit during 10/1000 μs transient |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy absorption capability under standardized waveform |
| ID (Reverse Leakage) | 1.0 μA at VWM - minimal DC loading on signal lines during normal operation |
| TJ max. | 150 °C - enables use in under-hood automotive environments and thermally constrained PCB layouts |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline with 0.220" × 0.130" footprint |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Provides symmetrical conduction path during positive or negative transients; no cathode band marking |
| Cathode | Transient current exit point (bidirectional) | Functions identically to anode under reverse polarity; terminal roles interchangeable in AC-coupled protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance testing |
| 600 W peak pulse power (10/1000 μs) | Robust suppression of ISO 7637-2 pulse 1, 2a, 3a/b, and IEC 61000-4-5 surges without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over lifetime and thermal stress |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture-related popcorning risk |
| Bidirectional symmetry | Identical clamping performance for ± transients - eliminates need for polarity-aware layout or orientation control |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Port |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across signal line and ground, responding within <1 ns to clamp overvoltage. Use Value: Maintains signal integrity below 77.0 V during 100 V/50 ms load dump events, preserving sensor accuracy and MCU input safety. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils, solenoids, and motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS connected between input line and common reference, absorbing both polarities of fast-rising transients. Use Value: Enables reliable 24 VDC input operation with immunity to ±1 kV EFT bursts per IEC 61000-4-4, reducing false triggering and component failure. |
| Telecom Interface Protection | Consumer USB/UART Line Guard |
|
Use Scenario: Shielding RS-485/RS-232 transceivers in base stations and network equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end clamping device mounted at connector entry point, preceding series impedance and filtering. Use Value: Limits induced common-mode transients to ≤77.0 V, preventing damage to ±12 V transceiver ICs while maintaining data integrity up to 10 Mbps. |
Use Scenario: Adding robust ESD and surge protection to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs and portable diagnostics tools. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional TVS placed adjacent to connector, minimizing signal distortion. Use Value: Withstands ±15 kV contact discharge (IEC 61000-4-2) and 600 W surges without latch-up, ensuring plug-and-play reliability and FCC compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Same SMB package, 58 V VWM, 600 W PPPM, but not AEC-Q101 qualified; higher VC = 93.6 V at 6.4 A | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment | Select when AEC-Q101 is not required and higher clamping voltage is acceptable |
| 1.5KE56CA | Through-hole DO-201 package, same 56 V VWM and 600 W rating, but larger footprint and lower MSL rating (Level 2) | Requires board real estate and wave-solder process; not compatible with fully SMT production | Choose only for legacy through-hole designs or prototyping where reflow compatibility is unnecessary |
Compared with SMAJ58CA and 1.5KE56CA, P6SMB56CAHE3_A/H delivers automotive-grade qualification, tighter clamping (77.0 V vs. 93.6 V), and optimized SMT manufacturability - making it the preferred choice for new automotive and high-reliability industrial designs requiring zero-layout change migration to AEC-compliant protection.
Availability
P6SMB56CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom RS-485 ports, and consumer USB/UART protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB56CAHE3_A/H 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-volume applications - engineered for automotive, industrial, and telecom systems demanding AEC-Q101 validation, low-profile packaging, and repeatable clamping performance.
FAQ
What is the clamping voltage of P6SMB56CAHE3_A/H at its rated peak pulse current?
The clamping voltage (VC) of P6SMB56CAHE3_A/H is 77.0 V measured at a peak pulse current (IPPM) of 7.8 A under the standard 10/1000 μs waveform. This value defines the maximum voltage imposed on protected circuitry during transient events and is confirmed in the Electrical Characteristics table of Vishay's Document Number 88370. P6SMB56CAHE3_A/H maintains this clamping performance bidirectionally due to its symmetrical construction.
Is P6SMB56CAHE3_A/H qualified for automotive applications?
Yes, P6SMB56CAHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in Vishay's ordering information and mechanical data sections. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance - making it suitable for automotive powertrain, body electronics, and ADAS sensor modules. The "_A/H" suffix denotes the tape-and-reel packaging variant with 750 units per reel.
What does the "CA" suffix mean in P6SMB56CAHE3_A/H?
The "CA" suffix in P6SMB56CAHE3_A/H designates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB56A), P6SMB56CAHE3_A/H has no cathode marking and exhibits identical VBR, VC, and IPPM characteristics in either polarity, simplifying layout and eliminating orientation dependency in AC-coupled or differential signal paths.
What is the maximum operating junction temperature for P6SMB56CAHE3_A/H?
The maximum operating junction temperature (TJ max.) for P6SMB56CAHE3_A/H is +150 °C, as specified in the Maximum Ratings table of Vishay's P6SMB datasheet. This rating supports deployment in under-hood automotive environments and thermally dense industrial PCBs. Derating curves in Figure 2 show usable pulse power decreases linearly above TA = 25 °C, with 50% derating at ~100 °C ambient when mounted on 0.2" × 0.2" copper pads.
How does the SMB (DO-214AA) package of P6SMB56CAHE3_A/H compare to SMA (DO-214AC) in size and thermal performance?
The SMB (DO-214AA) package used by P6SMB56CAHE3_A/H measures 0.220" × 0.130" (5.59 mm × 3.30 mm), slightly larger than SMA (DO-214AC) at 0.205" × 0.120" (5.21 mm × 3.05 mm). Thermally, SMB offers lower RθJL (20 °C/W typical) versus SMA (~30 °C/W), enabling better heat transfer to PCB copper. Both are RoHS-compliant and MSL Level 1, but SMB's larger pad area improves surge current handling and mechanical robustness for 600 W pulse dissipation.
P6SMB56CAHE3_A/H 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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB56CAHE3_A/H FAQ
1.How can I place an order for P6SMB56CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHE3_A/H 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 P6SMB56CAHE3_A/H reliable?
The price and inventory of P6SMB56CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHE3_A/H?
P6SMB56CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHE3_A/H 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 P6SMB56CAHE3_A/H?
For technical support, including P6SMB56CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB56CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHE3_A/H 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 P6SMB56CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHE3_A/H?
All P6SMB56CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHE3_A/H, 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 P6SMB56CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB56CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHE3_A/H Tags
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