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Vishay General Semiconductor - Diodes Division P6SMB9.1CA-E3/52
- Part No.:
- P6SMB9.1CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CA-E3/52.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,089
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Product details
Overview
P6SMB9.1CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 9.1 V standoff voltage (VWM), 13.4 V maximum clamping voltage (VC) at 44.8 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 P6SMB9.1CA-E3/52 datasheet, P6SMB9.1CA-E3/52 pinout, P6SMB9.1CA-E3/52 application, or P6SMB9.1CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.47), AEC-Q101 qualification eligibility (via HE3 suffix variants), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable leakage performance (<50 μA at VWM) and fast response time (<1.0 ns), enabling suppression of ESD and inductive switching spikes before sensitive downstream circuitry is damaged.
The P6SMB9.1CA-E3/52 delivers repeatable transient protection under repetitive 0.01% duty cycle conditions, with derating above 25 °C per Fig. 2 and validated operation across -65 °C to +150 °C junction temperature range. Its SMB package supports JEDEC-compliant soldering (J-STD-002/JESD 22-B102) and meets MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 7.78 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 8.65–9.55 V at 1.0 mA - Voltage at which device enters avalanche breakdown; tight tolerance (±5.5%) ensures predictable turn-on. |
| VC (Clamping Voltage) | 13.4 V at 44.8 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; low value minimizes stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorbed without failure; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | <50 μA at VWM - Low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | +150 °C - Enables reliable operation in under-hood automotive or high-temperature industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements for sustained surge duty cycles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; symmetrical with cathode in bidirectional mode | Enables clamping during positive- and negative-going transients without external polarity orientation. |
| Cathode | Current exit point in forward bias; symmetrical with anode in bidirectional mode | Eliminates need for directional placement on PCB - simplifies layout and reduces assembly errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Provides symmetrical transient suppression on AC-coupled or floating signal lines without polarity constraints. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed front-end circuits. |
| Low clamping ratio (VC/VWM ≈ 1.47) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing without baking - reduces manufacturing overhead. |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring reliability validation per stress test standards. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 5 V tolerant microcontrollers and signal conditioners exposed to ±100 V transients. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against inductive kickback from solenoid/relay coils. IC Role / Device Role / Timing Role: Fast-acting shunt device that diverts >100 A surge currents away from optocoupler input stages. Use Value: Eliminates need for external series resistors or RC snubbers while maintaining EN 61000-4-4 level 4 immunity. |
| Consumer USB Port ESD Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines after primary TVS array, targeting human-body-model (HBM) and IEC 61000-4-2 events. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) bidirectional clamp that avoids signal distortion at 480 Mbps. Use Value: Maintains signal integrity while suppressing ±15 kV contact discharge without degrading eye diagram margins. |
Use Scenario: Front-end protection on xDSL or Ethernet line interface cards subjected to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary surge diverter mounted directly at connector, clamping common-mode transients before transformer coupling. Use Value: Withstands repeated 600 W surges without parameter drift, extending field service life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Unidirectional; VWM = 9.0 V, VC = 14.4 V at 41.7 A; same SMB package and PPPM rating | Requires correct polarity orientation; unsuitable for AC or floating signals without external diode pairing | Select when protecting DC-biased lines where polarity is fixed and lower cost is prioritized over layout flexibility. |
| 1.5KE9.1CA | Through-hole DO-201 package; higher RθJA (~50 °C/W); VWM = 7.79 V, VC = 13.4 V at 44.8 A | Larger footprint; incompatible with high-density SMT designs; better thermal mass for infrequent high-energy surges | Choose for legacy through-hole boards or where board space permits larger package and manual assembly is acceptable. |
Compared with SMBJ9.0A-E3/52 and 1.5KE9.1CA, the P6SMB9.1CA-E3/52 uniquely combines bidirectional symmetry, SMT compatibility, and AEC-Q101 upgrade path - making it optimal for new automotive and industrial designs requiring zero-polarity-placement assurance and automated manufacturing scalability.
Availability
P6SMB9.1CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, consumer USB ports, and telecom line cards requiring stable component supply with RoHS compliance and traceable sourcing.
Supply support for P6SMB9.1CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications equipment - engineered for robustness under repetitive surge stress and compatibility with modern SMT assembly processes.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CA-E3/52?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB9.1CA-E3/52 provides symmetrical transient voltage clamping in both polarities. Unlike unidirectional variants (e.g., P6SMB9.1A), it has no cathode marking and can be placed without regard to orientation - essential for AC-coupled or floating signal paths where polarity reversal may occur during transients.
Is P6SMB9.1CA-E3/52 qualified for automotive applications?
The base P6SMB9.1CA-E3/52 is RoHS-compliant commercial-grade; however, Vishay offers AEC-Q101-qualified versions under ordering codes like P6SMB9.1CAHE3_B/H. These variants undergo stress testing per AEC-Q101 Rev D and are intended for automotive use cases such as body control modules and ADAS sensor interfaces - the P6SMB9.1CA-E3/52 itself is not AEC-Q101 qualified unless specified with HE3 or HM3 suffixes.
What is the maximum clamping voltage of P6SMB9.1CA-E3/52 under surge conditions?
The P6SMB9.1CA-E3/52 has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current (IPPM) of 44.8 A using the standard 10/1000 μs waveform. This value is measured at the device terminals and represents the worst-case voltage imposed on protected circuitry during a full-rated surge event.
How does P6SMB9.1CA-E3/52 compare to SMAJ9.0CA in terms of package and performance?
The P6SMB9.1CA-E3/52 uses the SMB (DO-214AA) package, while SMAJ9.0CA uses the smaller SMA (DO-214AC). Though both are bidirectional 9 V-class TVS diodes, the P6SMB9.1CA-E3/52 offers higher peak pulse power (600 W vs. 400 W for SMAJ9.0CA) and superior thermal dissipation (RθJA = 100 °C/W vs. ~130 °C/W), making it more suitable for sustained or repetitive surge environments.
Can P6SMB9.1CA-E3/52 be used in parallel for higher surge current handling?
No - P6SMB9.1CA-E3/52 should not be paralleled without external balancing components. Due to process variation in breakdown voltage (8.65–9.55 V), uneven current sharing will occur during transients, causing one device to absorb most of the energy and potentially fail prematurely. For higher current needs, select a single higher-rated part such as P6SMB12CA or implement staged protection with series impedance.
P6SMB9.1CA-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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- 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)
P6SMB9.1CA-E3/52 FAQ
1.How can I place an order for P6SMB9.1CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CA-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 P6SMB9.1CA-E3/52 reliable?
The price and inventory of P6SMB9.1CA-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 P6SMB9.1CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CA-E3/52?
P6SMB9.1CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CA-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 P6SMB9.1CA-E3/52?
For technical support, including P6SMB9.1CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB9.1CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CA-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 P6SMB9.1CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CA-E3/52?
All P6SMB9.1CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CA-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 P6SMB9.1CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB9.1CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CA-E3/52 Tags
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