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Vishay General Semiconductor - Diodes Division P6SMB20CAHE3/52
- Part No.:
- P6SMB20CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CAHE3/52.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB20CAHE3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in 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 17.8 A peak pulse current. It provides robust ESD and surge protection for low-voltage signal lines in automotive and industrial sensor interfaces.
For engineers reviewing the P6SMB20CAHE3/52 datasheet, P6SMB20CAHE3/52 pinout, P6SMB20CAHE3/52 application, or P6SMB20CAHE3/52 equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, 150 °C maximum junction temperature, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical breakdown behavior in both polarities-critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<1.0 μA at 17.1 V) and fast response time (<1.0 ns), enabling suppression of EFT bursts and lightning-induced surges before downstream IC damage occurs.
The P6SMB20CAHE3/52 is thermally optimized for surface-mount use: RθJA = 100 °C/W (on 0.2" × 0.2" copper pads), supports repetitive 0.01% duty cycle pulses, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its AEC-Q101 qualification confirms suitability for automotive electronics under extended temperature and vibration stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 18–20 V nominal signal rails. |
| VBR (Breakdown, min/max) | 22.2 V / 24.5 V at 1.0 mA - Tight 10% tolerance ensures predictable turn-on across production lots and temperature range. |
| VC (Clamping, at IPPM) | 32.4 V at 17.8 A - Limits transient voltage seen by protected IC to ≤32.4 V during 600 W surge, preserving 3.3 V/5 V logic integrity. |
| IPPM (Peak Pulse Current) | 17.8 A - Sustains 10/1000 μs waveform without degradation; derates linearly above 25 °C ambient per Fig. 2. |
| Junction Temp Range | −65 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Package | SMB (DO-214AA) - Standardized 3.94 mm × 2.20 mm footprint compatible with high-speed pick-and-place; matte tin leads meet J-STD-002 solderability. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control modules, ADAS sensors, and body electronics per stress test requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 3.94 mm × 2.20 mm × 2.30 mm (L × W × H); cathode/anode terminals are symmetric and interchangeable for AC protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts surge current during negative transients; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive polarity) | Accepts surge current during positive transients; identical electrical behavior to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without failure when properly mounted on 5 mm × 5 mm copper pads. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (<1 ns response), critical for protecting high-speed sensor outputs. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture-related popcorning or delamination. |
| Glass passivated junction | Delivers stable leakage performance (<1.0 μA at VWM) over 10-year field life and wide humidity ranges. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability: HTOL, TC, UHAST, and mechanical shock testing per AEC specification. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs against load-dump and jump-start induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching transceiver IC. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/350 ms) while surviving >1000 surge events per AEC-Q101. |
Use Scenario: Safeguarding RS-485/CAN FD physical layer nodes in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential across bus lines (CAN_H/CAN_L) to suppress common-mode surges up to ±30 kV ESD. Use Value: Clamps transients to <35 V within 1 ns, preventing bit errors and transceiver latch-up during 4 kV EFT bursts. |
| Consumer IoT Power Input | Telecom Line Card Surge Protection |
|
Use Scenario: Securing 5 V USB-powered smart home hubs against AC adapter miswiring and lightning-induced surges on DC input. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input rail upstream of DC-DC converter and LDO regulators. Use Value: Limits input voltage to ≤32.4 V during 600 W surges, avoiding catastrophic failure of downstream PMICs and microcontrollers. |
Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers in telecom access equipment deployed in lightning-prone regions. IC Role / Device Role / Timing Role: Bidirectional TVS installed between transformer secondary and PHY IC to absorb longitudinal surges on twisted-pair lines. Use Value: Withstands repeated 10/700 μs surges per ITU-T K.21 Basic Level while maintaining <1 pF junction capacitance to preserve signal bandwidth. |
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-E3/52 | Same VWM (20 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating. | Select when board space is constrained and surge threat level is ≤2 kV. |
| 1.5KE20CA | Through-hole TO-204AE (DO-204AC), same VWM/VC, higher PPPM (1500 W), but incompatible with SMT assembly. | Requires manual or wave-solder process; not viable for high-density automated production. | Choose only for legacy through-hole designs or prototyping where thermal mass outweighs assembly constraints. |
Compared with SMAJ20CA-E3/52 and 1.5KE20CA, the P6SMB20CAHE3/52 uniquely balances 600 W surge capability, AEC-Q101 qualification, and SMB package compatibility-making it optimal for volume automotive and industrial SMT deployments requiring validated reliability and process efficiency.
Availability
P6SMB20CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P6SMB20CAHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems-designed specifically to meet AEC-Q101, IEC 61000-4-5, and UL 94 V-0 requirements in compact surface-mount form factors.
FAQ
What does the "CA" suffix indicate in P6SMB20CAHE3/52?
The "CA" suffix denotes a bidirectional configuration: the P6SMB20CAHE3/52 provides symmetrical clamping for both positive and negative transients, unlike unidirectional "A" variants. This makes it ideal for AC-coupled signal lines, differential buses like CAN or RS-485, and floating power rails where polarity reversal may occur during surge events.
Is P6SMB20CAHE3/52 suitable for protecting 3.3 V logic circuits?
No-P6SMB20CAHE3/52 is not appropriate for direct protection of 3.3 V logic. Its 20 V stand-off voltage (VWM) and 32.4 V clamping voltage exceed safe limits for 3.3 V ICs. For 3.3 V rails, select lower-voltage TVS devices such as SMBJ3.3CA or SMLJ3.3CA, which clamp below 10 V and maintain compatibility with logic-level thresholds.
How does the HE3 suffix affect P6SMB20CAHE3/52's qualification status?
"HE3" indicates RoHS-compliant construction with AEC-Q101 qualification-verified for automotive applications including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This distinguishes it from commercial-grade E3 or M3 variants and confirms suitability for under-hood and safety-critical ECUs.
What is the maximum recommended PCB pad size for optimal thermal performance of P6SMB20CAHE3/52?
Vishay specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 600 W pulse power handling. Smaller pads increase thermal resistance and reduce surge current capability; larger pads yield diminishing returns due to package-limited heat spreading. Use internal ground/power planes connected via ≥4 thermal vias per pad for enhanced dissipation in high-duty-cycle applications.
Does P6SMB20CAHE3/52 have polarity markings on the package?
No-P6SMB20CAHE3/52 has no polarity markings because it is a bidirectional device. Both terminals are functionally identical; orientation during placement does not affect electrical performance. This simplifies automated assembly and eliminates risk of reverse installation errors common with unidirectional TVS diodes.
P6SMB20CAHE3/52 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:
- Discontinued at Digi-Key
- 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)
P6SMB20CAHE3/52 FAQ
1.How can I place an order for P6SMB20CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CAHE3/52 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 P6SMB20CAHE3/52 reliable?
The price and inventory of P6SMB20CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB20CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CAHE3/52?
P6SMB20CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CAHE3/52 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 P6SMB20CAHE3/52?
For technical support, including P6SMB20CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB20CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB20CAHE3/52 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 P6SMB20CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB20CAHE3/52?
All P6SMB20CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CAHE3/52, 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 P6SMB20CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB20CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20CAHE3/52 Tags
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