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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHE3_B/I
- Part No.:
- P6SMB9.1CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHE3_B/I.pdf
- Description:
- 600W,9.1V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,240
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Product details
Overview
P6SMB9.1CAHE3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 9.1 V standoff voltage (VWM), 13.4 V maximum clamping voltage at 44.8 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P6SMB9.1CAHE3_B/I datasheet, P6SMB9.1CAHE3_B/I pinout, P6SMB9.1CAHE3_B/I application, or P6SMB9.1CAHE3_B/I equivalent, key selection considerations include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
This device operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<50 μA at 7.78 V), while the 100 °C/W junction-to-ambient thermal resistance requires defined PCB copper pad layout (0.2" × 0.2") for rated 600 W pulse handling.
The P6SMB9.1CAHE3_B/I is AEC-Q101 qualified (automotive grade), RoHS-compliant, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its 0.068 %/°C temperature coefficient of VBR ensures predictable voltage drift across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 7.78 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin below circuit operating voltage. |
| VBR (Breakdown) | 8.65–9.55 V at 1.0 mA - verified avalanche onset range; ensures consistent triggering across production lots. |
| VC (Clamping) | 13.4 V at 44.8 A - maximum voltage seen by protected circuit during 10/1000 μs surge; critical for IC I/O voltage tolerance. |
| PPPM | 600 W - peak pulse power rating with 10/1000 μs waveform; determines transient energy absorption capacity. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 3.94 mm footprint; supports automated placement and IPC Class 2 whisker resistance. |
| AEC-Q101 | Qualified - validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood or industrial ambient environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no band marking required. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line pair. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN bus, RS-485, sensor bridges) without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when mounted per recommended 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for front-end protection in ECUs and ADAS modules. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream components; superior to many competing TVS diodes in same package class. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (260 °C peak), eliminating bake requirements in SMT assembly. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Maintains signal integrity under 100 V/10 ms load dump events while preserving <100 nA leakage at 5 V nominal supply. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) against ESD and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on A/B differential pair, enabling >15 kV contact ESD immunity per IEC 61000-4-2. Use Value: Clamps to ≤13.4 V within nanoseconds, preventing latch-up or permanent damage to transceiver ESD structures. |
| Consumer USB Port Protection | Power Supply Input Stage |
Use Scenario: Secondary-level surge suppression on USB 2.0 D+/D− lines in smart home hubs exposed to induced transients from nearby switching loads. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp between data lines and ground, minimizing signal distortion at 480 Mbps. Use Value: Junction capacitance <100 pF at 0 V bias ensures minimal rise-time degradation while delivering full 600 W surge handling. |
Use Scenario: Input-stage transient suppression on 12 V DC power rails feeding motor drivers or LED drivers in factory automation equipment. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk input capacitor to absorb repetitive switching spikes and inductive kickback. Use Value: Withstands 100 A non-repetitive forward surge (IFSM) and maintains stable VBR over 1000+ surge cycles at 0.01% duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Unidirectional; 9.0 V VWM; 14.4 V VC at 36.8 A; same SMB package but lacks AEC-Q101 qualification. | Requires explicit polarity assignment; unsuitable for AC or floating lines without external diode pairing. | Select only for cost-sensitive commercial designs where automotive qualification and bidirectionality are not required. |
| 1.5KE9.1CA | Through-hole DO-201 package; 9.1 V VWM; 13.4 V VC at 44.8 A; same electrical specs but larger footprint and manual assembly. | Not compatible with high-density SMT layouts; higher thermal resistance limits sustained surge repetition rate. | Use only when legacy through-hole compatibility or higher single-pulse energy margin (1500 W) outweighs SMT advantages. |
Compared with SMAJ9.0A and 1.5KE9.1CA, the P6SMB9.1CAHE3_B/I uniquely combines bidirectional operation, AEC-Q101 qualification, and SMB package density - making it the preferred choice for space-constrained, automotive-grade, and floating-line protection where polarity independence and process compatibility are mandatory.
Availability
P6SMB9.1CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB protection, and DC power input stages requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB9.1CAHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems - delivering robust clamping performance in compact surface-mount packages with stringent qualification standards.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB9.1CAHE3_B/I provides symmetrical clamping in both voltage polarities without cathode band marking. This distinguishes it from unidirectional variants (e.g., P6SMB9.1A) and enables direct use on AC-coupled or floating signal paths such as RS-485, CAN, or bridge sensor outputs. The P6SMB9.1CAHE3_B/I achieves identical VBR, VC, and PPPM performance in either direction.
Is P6SMB9.1CAHE3_B/I suitable for automotive applications?
Yes - the P6SMB9.1CAHE3_B/I is AEC-Q101 qualified (indicated by the "HE3_B" suffix), tested for temperature cycling, high-temperature reverse bias, and ESD robustness per automotive reliability standards. It is approved for use in engine control units, body electronics, infotainment interfaces, and ADAS sensor modules where transient immunity and long-term stability under thermal stress are required. The P6SMB9.1CAHE3_B/I operates continuously from -65 °C to +150 °C junction temperature.
What is the maximum clamping voltage of P6SMB9.1CAHE3_B/I and under what test condition?
The maximum clamping voltage (VC) of the P6SMB9.1CAHE3_B/I is 13.4 V, measured at a peak pulse current (IPPM) of 44.8 A using the industry-standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by protected circuitry during surge events. The P6SMB9.1CAHE3_B/I maintains this clamping performance with <50 μA leakage at its 7.78 V stand-off voltage.
How does the SMB (DO-214AA) package of P6SMB9.1CAHE3_B/I affect thermal performance?
The SMB package of the P6SMB9.1CAHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This thermal design enables full 600 W peak pulse power dissipation only under those conditions; reduced pad area increases junction temperature and derates surge capability. The P6SMB9.1CAHE3_B/I also features RθJL = 20 °C/W for improved heat conduction to PCB traces.
What is the significance of the "_B/I" suffix in P6SMB9.1CAHE3_B/I?
The "_B" indicates AEC-Q101 qualification for the P6SMB9.1CAHE3_B/I series (covering 6.8 V to 220 V bidirectional parts), while "_I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel - optimized for high-volume SMT assembly. This ordering code confirms RoHS compliance, matte tin plating, JESD201 Class 2 whisker resistance, and compatibility with standard pick-and-place equipment. The P6SMB9.1CAHE3_B/I is not offered in tube or tray formats.
P6SMB9.1CAHE3_B/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:
- 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:
- Telecom
- 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_B/I FAQ
1.How can I place an order for P6SMB9.1CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHE3_B/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_B/I reliable?
The price and inventory of P6SMB9.1CAHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHE3_B/I?
P6SMB9.1CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHE3_B/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_B/I?
For technical support, including P6SMB9.1CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB9.1CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHE3_B/I?
All P6SMB9.1CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHE3_B/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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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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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