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Vishay General Semiconductor - Diodes Division P6SMB20CA-E3/52
- Part No.:
- P6SMB20CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CA-E3/52.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,790
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Product details
Overview
P6SMB20CA-E3/52 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 20 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 27.7 V maximum clamping voltage (VC) at 21.7 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB20CA-E3/52 datasheet, P6SMB20CA-E3/52 pinout, P6SMB20CA-E3/52 application, or P6SMB20CA-E3/52 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, RoHS-compliant commercial-grade construction, and AEC-Q101-qualified alternatives - all critical for ESD and surge protection design validation.
Technical Context
The P6SMB20CA-E3/52 operates as a symmetrical bidirectional TVS, exhibiting identical clamping characteristics in both polarity directions due to its back-to-back Zener junction structure. Its 27.7 V clamping voltage at 21.7 A ensures robust overvoltage suppression during transient events such as inductive load switching or lightning-induced surges.
With a 100 °C/W junction-to-ambient thermal resistance and 150 °C maximum junction temperature, it supports operation under sustained ambient conditions up to +125 °C when derated per Fig. 2. Its glass-passivated chip junction and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Voltage at which device transitions into avalanche conduction; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 27.7 V at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum non-repetitive surge energy absorption capability; enables protection against IEC 61000-4-5 Level 3/4 surges. |
| IPPM (Peak Pulse Current) | 21.7 A - Surge current level at which VC is specified; correlates directly with system-level surge test compliance. |
| TJmax | 150 °C - Maximum allowable junction temperature; sets thermal design limits for PCB copper pad area and airflow requirements. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with automated placement and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Case dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| 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) | Supports IEC 61000-4-5 4th edition surge immunity testing up to 2 Ω source impedance without failure. |
| 27.7 V clamping voltage at 21.7 A | Limits voltage overshoot across protected ICs or MOSFETs during 1 kV/2 kV surge events, preserving gate oxide integrity. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement in production. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at 20 V) and long-term reliability under thermal cycling and humidity exposure. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets EU RoHS Directive 2011/65/EU and IPC-J-STD-609A material declarations; suitable for consumer and industrial end equipment. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pairs or supply rails to limit transient excursions before they reach sensitive analog front-ends. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while adding <1 pF parasitic capacitance - no data rate degradation on 1 Mbps CAN lines. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel input to shunt >1 kV/0.5 J transients away from optocoupler input stages and microcontroller GPIOs. Use Value: Enables EN 61000-4-4 EFT immunity up to ±2 kV (5/50 ns) and EN 61000-4-5 surge immunity up to ±1 kV (2 Ω/12 Ω coupling) without external series impedance. |
| Consumer Audio Equipment ESD Protection | Telecom Line Card Transient Suppression |
Use Scenario: Shielding headphone jack, USB-C, or speaker amplifier outputs from human-body-model (HBM) ESD events during handling or cable insertion. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed between signal line and ground to divert 8 kV contact discharge energy within <1 ns. Use Value: Clamps ESD pulses to <30 V peak while maintaining audio bandwidth (>20 kHz) due to sub-100 pF junction capacitance at 0 V bias. |
Use Scenario: Front-end protection of Ethernet PHYs, DSL line drivers, or PoE-powered devices exposed to lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at connector entry point, coordinated with secondary GDT or polymer PTC for multi-stage protection. Use Value: Absorbs up to 600 W of surge energy in first 1000 µs, reducing residual voltage to levels compatible with 3.3 V/5 V PHY interface tolerances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20CA | Same VWM (20 V), lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (140 °C/W) | Lower surge handling capacity; requires larger PCB area and more conservative thermal layout | Select when cost sensitivity outweighs surge margin and board space permits larger footprint. |
| P6SMB20CAHE3_B | Identical electrical specs, AEC-Q101 qualified, same SMB package, HE3 suffix denotes automotive-grade screening and traceability | Required for automotive OEM designs needing PPAP documentation and extended temperature validation (-40 °C to +125 °C) | Choose for automotive applications where qualification and supply chain traceability are mandatory. |
Compared with SMAJ20CA, P6SMB20CA-E3/52 delivers 50 % higher surge power rating and better thermal performance in the same industry-standard SMB footprint; versus P6SMB20CAHE3_B, it offers identical protection performance at commercial-grade cost and qualification - ideal for industrial and consumer designs not requiring AEC-Q101.
Availability
P6SMB20CA-E3/52 is available at Aetrix Electronics and suitable for industrial automation, automotive sensor modules, and telecom infrastructure requiring stable component supply, RoHS-compliant manufacturing, and consistent SMB package compatibility across production batches.
Supply support for P6SMB20CA-E3/52 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, power efficiency, and high-volume manufacturability.
The P6SMB Series targets cost-sensitive, high-surge-protection applications in automotive, industrial, and consumer electronics - engineered for automated SMT assembly, low-profile integration, and repeatable clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of P6SMB20CA-E3/52 at its rated peak pulse current?
The P6SMB20CA-E3/52 has a maximum clamping voltage (VC) of 27.7 V at 21.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuits during transient events. The P6SMB20CA-E3/52 maintains this clamping performance across its full operating temperature range when properly mounted on recommended 0.2" × 0.2" copper pads.
Is P6SMB20CA-E3/52 suitable for automotive applications?
P6SMB20CA-E3/52 is a commercial-grade, RoHS-compliant variant and is not AEC-Q101 qualified. For automotive use, Vishay offers the P6SMB20CAHE3_B variant - identical in electrical specs and SMB packaging but with full AEC-Q101 qualification, extended temperature validation, and PPAP-supporting traceability. The P6SMB20CA-E3/52 remains appropriate for non-safety-critical automotive subsystems where qualification is not mandated.
How does the bidirectional nature of P6SMB20CA-E3/52 affect its PCB layout?
The P6SMB20CA-E3/52 has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled signals, differential buses (e.g., RS-485), or ungrounded power rails. Layout must still follow Vishay's recommended 0.2" × 0.2" copper pad per terminal to ensure thermal performance and surge current handling - the P6SMB20CA-E3/52 relies on symmetric thermal dissipation paths regardless of transient polarity.
What is the maximum junction temperature rating for P6SMB20CA-E3/52?
The P6SMB20CA-E3/52 has a maximum junction temperature (TJmax) of +150 °C, with derating required above +25 °C ambient per Figure 2 in the datasheet. At +125 °C ambient, its usable peak pulse power drops to approximately 300 W. Thermal design must account for its 100 °C/W junction-to-ambient resistance - the P6SMB20CA-E3/52 achieves rated performance only when mounted on minimum recommended copper pad areas.
Does P6SMB20CA-E3/52 meet any international surge immunity standards?
The P6SMB20CA-E3/52 is engineered to support compliance with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) standards when applied per Vishay's recommended layout and coordination with upstream impedance. Its 600 W peak pulse power and 27.7 V clamping voltage enable system-level protection against 1 kV/2 kV surge tests using 2 Ω or 12 Ω source impedances - a key requirement for P6SMB20CA-E3/52 in industrial and telecom equipment certification.
P6SMB20CA-E3/52 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB20CA-E3/52 FAQ
1.How can I place an order for P6SMB20CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CA-E3/52 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 P6SMB20CA-E3/52 reliable?
The price and inventory of P6SMB20CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB20CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CA-E3/52?
P6SMB20CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CA-E3/52 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 P6SMB20CA-E3/52?
For technical support, including P6SMB20CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB20CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB20CA-E3/52 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 P6SMB20CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB20CA-E3/52?
All P6SMB20CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CA-E3/52, 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 P6SMB20CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB20CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20CA-E3/52 Tags
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