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Vishay General Semiconductor - Diodes Division P6SMB20CAHE3_A/I
- Part No.:
- P6SMB20CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CAHE3_A/I.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,479
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Product details
Overview
P6SMB20CAHE3_A/I 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), 20 V standoff voltage (VWM), and clamping voltage of 32.4 V at 18.3 A peak pulse current - deployed for ESD and surge protection on signal lines and power rails in automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the P6SMB20CAHE3_A/I datasheet, P6SMB20CAHE3_A/I pinout, P6SMB20CAHE3_A/I application, or P6SMB20CAHE3_A/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling protection against voltage transients regardless of polarity - critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device delivers 600 W peak pulse power per the standard 10/1000 μs waveform at 0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting operation up to +150 °C junction temperature in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown) | 22.8 V min / 25.2 V max at 1 mA - precise voltage threshold where avalanche conduction initiates reliably. |
| VC (Clamping) | 32.4 V at IPPM = 18.3 A - peak voltage seen by downstream ICs during worst-case transient; limits stress on MOSFETs or microcontrollers. |
| PPPM | 600 W (10/1000 μs) - energy-handling capability sufficient for IEC 61000-4-5 Level 3 surges (1 kV line-to-line). |
| TJ max | +150 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - standardized 2-pin SMD outline with 5.59 mm × 3.94 mm footprint; compatible with J-STD-020 reflow profiles. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical bidirectional terminals; conducts avalanche current in either direction when voltage exceeds VBR. |
| Case | Thermal interface | Plastic body with matte tin-plated leads; requires 0.2" × 0.2" copper pads per terminal for specified thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity concerns. |
| 600 W peak pulse rating | Withstands 10/1000 μs surges up to 18.3 A - meets IEC 61000-4-5 for industrial and automotive power-line immunity. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; eliminates parameter drift caused by moisture or contamination ingress. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS camera modules, and body electronics requiring zero-failure field performance. |
| MSL Level 1 | Can be stored indefinitely at ambient conditions and reflowed at peak 260 °C without preconditioning - simplifies manufacturing logistics. |
Applications
| Automotive Sensor Protection | Industrial I/O Module Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching ASIC or MCU input pins. Use Value: Limits induced voltage to ≤32.4 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in 3.3 V/5 V automotive microcontrollers. | Use Scenario: Safeguarding 24 V DC digital input channels on PLC modules subjected to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor across input terminals, operating continuously at 20 V while clamping spikes above 22.8 V. Use Value: Maintains system uptime by absorbing 600 W surge energy without degradation - verified over >1000 cycles per IEC 61000-4-5. |
| Consumer Audio Interface Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding balanced audio inputs (e.g., XLR, TRS) in professional mixers from ESD events and cable discharge during live setup. IC Role / Device Role / Timing Role: Symmetric clamping device across differential pair to preserve signal integrity while diverting ±15 kV HBM ESD strikes. Use Value: Achieves <1 ns response time and <0.5 pF junction capacitance at 0 V bias - avoids high-frequency attenuation in 20 kHz audio bandwidth. | Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors handling lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Primary surge suppression stage before secondary GDT or MOV stages; handles fast-rising transients before slower devices activate. Use Value: Clamps to 32.4 V within nanoseconds, limiting stress on 2.5 V/3.3 V PHY transceivers and preserving link integrity during 1 kV ring wave tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Same SMB package, 600 W rating, but VWM = 20 V, VC = 32.4 V - identical clamping performance; not AEC-Q101 qualified. | Targeted at commercial/industrial use only; lacks automotive reliability validation and extended temperature life testing. | Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs qualification requirements. |
| SMCJ20CA | Higher 1500 W rating in larger SMC (DO-214AB) package; same VWM/VC specs but 3× higher surge capacity and 2× larger footprint. | Suitable for primary-level protection in high-energy systems (e.g., solar inverters, motor drives); not drop-in for space-constrained SMB layouts. | Choose when system-level surge threat exceeds 600 W and board area allows 7.11 mm × 6.22 mm package. |
Compared with SMBJ20CA and SMCJ20CA, P6SMB20CAHE3_A/I uniquely combines AEC-Q101 qualification, SMB footprint constraints, and precise 20 V standoff - making it the optimal choice for automotive and space-limited industrial designs requiring certified reliability without layout redesign.
Availability
P6SMB20CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, consumer audio equipment, and telecom line cards requiring stable component supply and full traceability.
Supply support for P6SMB20CAHE3_A/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 optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under surge stress are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB20CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB20CAHE3_A/I provides symmetrical transient suppression in both voltage polarities. This distinguishes it from unidirectional variants (e.g., P6SMB20A) and makes it ideal for protecting AC-coupled signals, differential buses, or floating nodes where polarity reversal may occur during transients.
Is P6SMB20CAHE3_A/I suitable for automotive applications?
Yes, P6SMB20CAHE3_A/I is AEC-Q101 qualified, with test validation covering temperature cycling, high-temperature reverse bias, and ESD robustness. Its 150 °C max junction temperature, MSL Level 1 rating, and RoHS-compliant matte tin plating make it approved for under-hood and chassis-mounted automotive electronics including ADAS sensors and body control modules.
What is the clamping voltage of P6SMB20CAHE3_A/I and how is it measured?
The clamping voltage (VC) of P6SMB20CAHE3_A/I is 32.4 V, measured at a peak pulse current (IPPM) of 18.3 A using the standardized 10/1000 μs double-exponential waveform. This value represents the maximum voltage imposed on protected circuitry during a surge event and is guaranteed per Vishay's datasheet test conditions with 0.2" × 0.2" copper pads.
How does the SMB (DO-214AA) package of P6SMB20CAHE3_A/I compare to SMC or SMA packages?
The SMB package of P6SMB20CAHE3_A/I measures 3.94 mm × 2.20 mm - smaller than SMC (7.11 mm × 6.22 mm) and slightly larger than SMA (4.57 mm × 2.79 mm). It offers a balance of surge capability (600 W), manufacturability (MSL Level 1), and board space efficiency, making P6SMB20CAHE3_A/I preferable where layout density matters but 1500 W SMC-level protection is unnecessary.
Does P6SMB20CAHE3_A/I require a heatsink for standard operation?
No, P6SMB20CAHE3_A/I does not require an external heatsink under normal surge conditions. Its thermal resistance (RθJA = 100 °C/W) is specified for mounting on 0.2" × 0.2" copper pads per terminal - sufficient to dissipate 5.0 W continuous power and handle 600 W transient pulses without exceeding 150 °C junction temperature, provided layout follows Vishay's recommended pad dimensions.
P6SMB20CAHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
P6SMB20CAHE3_A/I FAQ
1.How can I place an order for P6SMB20CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CAHE3_A/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 P6SMB20CAHE3_A/I reliable?
The price and inventory of P6SMB20CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB20CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CAHE3_A/I?
P6SMB20CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CAHE3_A/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 P6SMB20CAHE3_A/I?
For technical support, including P6SMB20CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB20CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB20CAHE3_A/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 P6SMB20CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB20CAHE3_A/I?
All P6SMB20CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CAHE3_A/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 P6SMB20CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB20CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20CAHE3_A/I 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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