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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHE3_A/I
- Part No.:
- P6SMB9.1CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHE3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,790
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Product details
Overview
P6SMB9.1CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 9.1 V breakdown voltage (VBR min/max = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), and clamps to ≤13.4 V at 44.8 A peak pulse current (IPPM) under 10/1000 µs waveform - used in automotive sensor interface protection per AEC-Q101 qualification.
For engineers reviewing the P6SMB9.1CAHE3_A/I datasheet, P6SMB9.1CAHE3_A/I pinout, P6SMB9.1CAHE3_A/I application, or P6SMB9.1CAHE3_A/I equivalent, this device delivers verified 600 W peak pulse power, low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for high-reliability automotive and industrial PCB designs requiring robust ESD and lightning surge immunity without polarity sensitivity.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, VWM, IPPM, and VC specifications in either direction - eliminating need for orientation-aware layout. Its glass-passivated junction ensures stable leakage (<50 µA at VWM) and fast response time (<1 ns) to transient events.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. The AEC-Q101 qualification (HE3 suffix) confirms suitability for automotive under-hood and ADAS sensor line protection where junction temperature cycling and long-term reliability are mission-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| Clamping Voltage VC | ≤13.4 V at 44.8 A (10/1000 µs) - limits downstream IC stress during surge; 73% overhead above VWM |
| Peak Pulse Power PPPM | 600 W - sustains 10/1000 µs transients without degradation; validated per Fig. 1 derating curve |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint with matte tin leads; supports automated SMT placement and J-STD-020 260 °C reflow |
| AEC-Q101 Qualified | Yes (HE3 suffix) - qualified for automotive applications including engine control, body electronics, and infotainment interfaces |
| Maximum Junction Temp | +150 °C - enables use in under-hood environments and thermally constrained enclosures |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity required in layout |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line and ground/reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 600 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V automotive buses |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead |
| Glass passivated junction | Ensures <50 µA max reverse leakage at VWM and stable VBR over temperature and lifetime |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs against load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between bus line and ground, shunting transients before they reach transceiver ESD structures. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while preserving <13.4 V clamp level - preventing transceiver latch-up or damage. |
Use Scenario: Safeguarding RS-485 and CAN FD physical layer nodes in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Line-to-ground TVS on differential pair, absorbing common-mode surges induced by nearby 400 VAC motor drives. Use Value: Limits voltage excursion to ≤13.4 V during 1 kV/500 A surge tests (IEC 61000-4-5), ensuring uninterrupted communication up to 5 Mbps. |
| Consumer USB Port ESD | Telecom DSL Line Protection |
|
Use Scenario: ESD and surge protection for USB 2.0 data lines (D+/D−) in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, clamping ±15 kV contact discharge per IEC 61000-4-2. Use Value: Adds <0.5 pF typical junction capacitance (per Fig. 4), avoiding signal integrity loss at 480 Mbps while meeting Class 4 ESD immunity. |
Use Scenario: Primary protection for ADSL/VDSL line cards against lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: First-stage clamping device between line transformer secondary and codec IC, handling up to 600 W surge energy. Use Value: Survives repeated 10/1000 µs surges up to 44.8 A without parameter shift - extends field service life in outdoor DSLAM cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Unidirectional; 9.0 V VBR (min 8.55 V); 14.5 V VC at 41.4 A; same SMB package | Requires correct polarity placement; not suitable for AC or floating lines without external biasing | Select only if circuit topology guarantees fixed polarity and lower clamping voltage tolerance is acceptable |
| 1.5KE9.1CA | Through-hole DO-201 package; 9.1 V VBR; 13.4 V VC at 44.8 A; same electrical specs but larger footprint | Not compatible with SMT-only production; higher thermal resistance (RθJA ≈ 150 °C/W) | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ9.0A and 1.5KE9.1CA, P6SMB9.1CAHE3_A/I uniquely combines bidirectional symmetry, AEC-Q101 qualification, and SMB SMT compatibility - making it the only option among the three qualified for automotive serial bus protection without layout redesign or polarity verification.
Availability
P6SMB9.1CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial fieldbus node development, and telecom line card manufacturing requiring stable component supply, AEC-Q101 compliance, and high-volume SMT assembly readiness.
Supply support for P6SMB9.1CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and extended temperature operation.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHE3_A/I?
The "CA" suffix in P6SMB9.1CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities without requiring orientation during placement. This distinguishes it from unidirectional variants (e.g., P6SMB9.1A), which have a defined cathode band and must be installed with correct polarity. The CA version is ideal for AC-coupled or floating signal lines where voltage polarity may reverse.
Is P6SMB9.1CAHE3_A/I suitable for automotive applications?
Yes, P6SMB9.1CAHE3_A/I is AEC-Q101 qualified (confirmed by the "HE3" suffix), making it suitable for automotive applications including engine control units, ADAS sensors, and body electronics. It has passed stress tests for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, and supports operation from −65 °C to +150 °C junction temperature - meeting under-hood environmental requirements.
What is the clamping voltage of P6SMB9.1CAHE3_A/I at its rated peak pulse current?
The clamping voltage (VC) of P6SMB9.1CAHE3_A/I is guaranteed to be ≤13.4 V at its rated peak pulse current of 44.8 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is confirmed in the Electrical Characteristics table on page 2 of the Vishay document 88370 and represents the maximum voltage seen by downstream circuitry during a full-power surge event.
Does P6SMB9.1CAHE3_A/I require special PCB layout considerations?
No special layout is needed beyond Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal (per Note 2 in the Maximum Ratings table). Because P6SMB9.1CAHE3_A/I is bidirectional and housed in an SMB (DO-214AA) package, no polarity marking exists - simplifying placement. Thermal relief and short, low-inductance traces to ground are advised to maintain clamping effectiveness during fast transients.
How does the HE3 suffix differ from E3 or M3 in P6SMB9.1CAHE3_A/I?
The "HE3" suffix in P6SMB9.1CAHE3_A/I indicates RoHS-compliant construction *and* AEC-Q101 qualification - unlike "E3" (RoHS commercial grade only) or "M3" (halogen-free RoHS commercial grade). The "H" prefix specifically denotes automotive qualification, and the "_A/I" denotes tape-and-reel packaging (3200 pcs per 13" reel). This makes P6SMB9.1CAHE3_A/I appropriate for production automotive programs requiring certified reliability.
P6SMB9.1CAHE3_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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB9.1CAHE3_A/I FAQ
1.How can I place an order for P6SMB9.1CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHE3_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 P6SMB9.1CAHE3_A/I reliable?
The price and inventory of P6SMB9.1CAHE3_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 P6SMB9.1CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHE3_A/I?
P6SMB9.1CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHE3_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 P6SMB9.1CAHE3_A/I?
For technical support, including P6SMB9.1CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB9.1CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHE3_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 P6SMB9.1CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHE3_A/I?
All P6SMB9.1CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHE3_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 P6SMB9.1CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHE3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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