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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHE3/5B
- Part No.:
- P6SMB9.1CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHE3/5B.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,884
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Product details
Overview
P6SMB9.1CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 600 W peak pulse power with 10/1000 μs waveform, 9.1 V breakdown voltage (VBR min/max = 8.65–9.55 V at IT = 1.0 mA), and 13.4 V maximum clamping voltage (VC) at IPPM. It protects signal lines and power rails in automotive sensor units, industrial I/O modules, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB9.1CAHE3/5B datasheet, P6SMB9.1CAHE3/5B pinout, P6SMB9.1CAHE3/5B application, or P6SMB9.1CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 13.4 V clamping under 44.8 A peak pulse current, low thermal resistance (RθJL = 20 °C/W), and RoHS-compliant matte tin-plated leads solderable per J-STD-002.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It exhibits fast response time (<1 ns), low incremental surge resistance, and stable clamping across junction temperatures from –65 °C to +150 °C.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets MSL Level 1 per J-STD-020 with 260 °C peak reflow, and delivers 600 W peak pulse power at 0.01% duty cycle - validated under repetitive 10/1000 μs waveform testing per Fig. 1 and Fig. 3 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min–max) | 8.65–9.55 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins in both directions |
| VWM | 7.78 V - maximum continuous reverse stand-off voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V at 44.8 A - clamping voltage during full 600 W transient, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform, enabling robust protection against lightning surges and load dump |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without external heatsinking |
| TJ max | +150 °C - extended junction temperature rating allows operation in under-hood automotive and high-ambient industrial environments |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetric node in bidirectional operation | No polarity marking required - identical electrical behavior in either direction; enables simplified PCB layout for AC-coupled or floating lines |
| Cathode | Current exit terminal in forward bias; symmetric node in bidirectional operation | Same physical terminal as Anode - bidirectional symmetry eliminates orientation constraints during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating power domains without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules, ADAS sensors, and body electronics |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge (4 kV line-earth) and ISO 7637-2 Pulse 1/2a/5a transients in automotive systems |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V and 5 V logic interfaces with tight VDD margins |
| MSL Level 1, 260 °C peak reflow | Supports lead-free reflow soldering without preconditioning or special handling, reducing manufacturing complexity |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog front-ends in wheel speed, temperature, and pressure sensors exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Prevents latch-up or gate oxide damage in 5 V tolerant transceivers by limiting transient voltage to ≤13.4 V during 44.8 A pulses. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ADC inputs in programmable logic controllers subjected to field wiring surges and ESD events. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) bidirectional suppressor mounted across input terminals to absorb ±1 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <0.5 μA leakage at 7.78 V, avoiding offset errors in precision 16-bit analog acquisition paths. |
| Telecom Line Card Protection | Consumer USB Port ESD Clamp |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Primary-level TVS in series with gas discharge tube (GDT) for coordinated two-stage protection per ITU-T K.20/K.21. Use Value: Fast <1 ns response captures initial surge edge before GDT fires, reducing let-through voltage to sub-20 V levels. |
Use Scenario: Adding secondary ESD protection on USB 2.0 D+/D− lines behind internal port controller ICs in smart speakers and set-top boxes. IC Role / Device Role / Timing Role: Compact SMB footprint enables placement within 2 mm of USB connector, minimizing trace inductance for optimal high-speed ESD suppression. Use Value: Meets IEC 61000-4-2 ±15 kV air/±8 kV contact without degrading 480 Mbps data eye due to low junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Unidirectional; VBR = 8.55–9.45 V; VC = 14.4 V @ 41.7 A; same SMB package but lacks AEC-Q101 qualification | Requires external polarity management; not approved for automotive use | Select only for cost-sensitive commercial applications where bidirectionality and automotive qualification are unnecessary |
| SMCJ9.0CA | Bidirectional; higher PPPM = 1500 W; VBR = 8.55–9.45 V; VC = 14.4 V @ 104 A; larger SMC (DO-214AB) package | Higher surge capacity but 50% larger footprint and 2× height - unsuitable for space-constrained layouts | Choose when system-level surge requirements exceed 600 W, e.g., outdoor telecom enclosures or industrial motor drives |
Compared with SMAJ9.0A and SMCJ9.0CA, P6SMB9.1CAHE3/5B uniquely combines bidirectional operation, AEC-Q101 qualification, and SMB footprint - making it the only option among the three qualified for automotive sensor nodes requiring zero-polarity-layout flexibility and production-grade reliability.
Availability
P6SMB9.1CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interface, industrial PLC analog input, and telecom line card protection requiring stable component supply, AEC-Q101 compliance, and surface-mount manufacturability.
Supply support for P6SMB9.1CAHE3/5B 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, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust surge handling, low clamping, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB9.1CAHE3/5B provides symmetrical transient voltage suppression in both polarities, unlike unidirectional variants (e.g., P6SMB9.1A). This eliminates polarity marking on PCBs and simplifies design for AC-coupled or floating signal lines, such as RS-485 buses or sensor bridge outputs. The P6SMB9.1CAHE3/5B achieves this using a back-to-back diode structure inside the SMB package.
Is P6SMB9.1CAHE3/5B qualified for automotive applications?
Yes, P6SMB9.1CAHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics like ADAS camera modules and battery management system interfaces.
What is the maximum clamping voltage of P6SMB9.1CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB9.1CAHE3/5B is 13.4 V at 44.8 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed across the operating temperature range and ensures protected downstream ICs - such as 3.3 V or 5 V microcontrollers - remain below absolute maximum ratings during transient events. The clamping ratio (VC/VBR) is approximately 1.41, reflecting strong voltage-limiting performance.
How does the HE3 suffix differ from E3 or M3 in P6SMB9.1CAHE3/5B?
The "HE3" suffix in P6SMB9.1CAHE3/5B indicates RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from "E3" (RoHS-compliant, commercial grade only) and "M3" (halogen-free, RoHS-compliant, commercial grade). The "H" prefix specifically denotes automotive qualification, while "E3" refers to Vishay's standard lead-free plating. All three share the same SMB package and electrical specs, but only P6SMB9.1CAHE3/5B is approved for automotive production use.
What is the thermal resistance specification for P6SMB9.1CAHE3/5B?
P6SMB9.1CAHE3/5B has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, per the Thermal Characteristics table in the Vishay datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper pads, supporting reliable 600 W pulse power dissipation without additional heatsinking. Its junction-to-ambient (RθJA) is 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads.
P6SMB9.1CAHE3/5B 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):
- 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)
P6SMB9.1CAHE3/5B FAQ
1.How can I place an order for P6SMB9.1CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHE3/5B 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 P6SMB9.1CAHE3/5B reliable?
The price and inventory of P6SMB9.1CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHE3/5B?
P6SMB9.1CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHE3/5B 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 P6SMB9.1CAHE3/5B?
For technical support, including P6SMB9.1CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB9.1CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHE3/5B 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 P6SMB9.1CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHE3/5B?
All P6SMB9.1CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHE3/5B, 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 P6SMB9.1CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHE3/5B Tags
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