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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHE3_A/H
- Part No.:
- P6SMB9.1CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHE3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,202
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Product details
Overview
P6SMB9.1CAHE3_A/H 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), 9.1 V breakdown voltage (VBR min/max = 8.65–9.55 V at IT = 1.0 mA), and clamping voltage of 13.4 V at 44.8 A peak pulse current - deployed for ESD and surge protection on low-voltage signal lines in automotive sensor interfaces.
For engineers reviewing the P6SMB9.1CAHE3_A/H datasheet, P6SMB9.1CAHE3_A/H pinout, P6SMB9.1CAHE3_A/H application, or P6SMB9.1CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 13.4 V max clamping at 44.8 A, RoHS-compliant matte tin terminals, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical bidirectional conduction - no polarity marking required - enabling suppression of both positive and negative transients without circuit redesign. Its glass-passivated junction ensures stable leakage (<50 μA at VWM = 7.78 V) and fast response time (<1.0 ns).
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting operation from –65 °C to +150 °C junction temperature. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates in either polarity |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V at 44.8 A - peak clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform, validated at 0.01% duty cycle |
| Junction Temp Range | –65 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability per stress test standard, indicated by HE3 suffix |
| Package | SMB (DO-214AA) - 0.220" × 0.130" footprint, compatible with automated SMT placement and reflow |
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 |
| Terminal 2 | Anode/Cathode (bidirectional) | Complementary terminal completing symmetrical clamping path - identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when properly laid out |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile up to 260 °C peak temperature |
| Glass-passivated junction | Ensures stable leakage (<50 μA) and long-term reliability under thermal cycling and humidity |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting LIN or SENT bus lines in engine temperature sensors exposed to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point. Use Value: Limits induced transients to ≤13.4 V, preventing damage to 5 V or 3.3 V sensor ASICs while maintaining signal integrity. |
Use Scenario: Guarding CAN_H/CAN_L differential pair against ESD (IEC 61000-4-2 ±8 kV contact) and burst noise in factory automation nodes. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF typical) bidirectional clamp across differential lines. Use Value: Clamps common-mode surges without distorting 1 Mbps CAN signaling due to symmetrical VC and fast <1 ns response. |
| Consumer USB Port ESD | Telecom DSL Line Protection |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D– lines behind primary polymer fuse in set-top box front panel. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp absorbing ±15 kV HBM events. Use Value: Maintains <13.4 V clamping level across both data lines, preserving eye diagram integrity at 480 Mbps. |
Use Scenario: Overvoltage protection on ADSL/VDLS line interface transformers subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter placed across secondary winding of isolation transformer. Use Value: Handles 600 W pulses without degradation, ensuring >100,000 surge cycles per Telcordia GR-1089-CORE spec. |
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; VBR = 9.0–10.0 V; VC = 14.4 V @ 41.7 A; same SMB package | Requires explicit polarity assignment; unsuitable for AC or floating lines without series diodes | Select only if circuit topology mandates unidirectional clamping and layout allows cathode orientation control |
| 1.5KE9.1CA | Through-hole DO-201 package; VBR = 8.65–9.55 V; VC = 13.4 V @ 44.8 A; same electrical specs | Larger footprint (0.260" × 0.155"); incompatible with high-density SMT layouts | 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/H uniquely combines bidirectional operation, AEC-Q101 qualification, and SMB SMT compatibility - making it the only drop-in solution for automotive-grade, space-constrained, polarity-agnostic surge protection.
Availability
P6SMB9.1CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB port protection, and telecom DSL line protection requiring stable component supply and AEC-Q101 compliance.
Supply support for P6SMB9.1CAHE3_A/H 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 designed specifically for robust, high-power transient suppression in automotive, industrial, and communications systems - balancing clamping precision, surge endurance, and SMT manufacturability.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHE3_A/H?
The "CA" suffix denotes bidirectional configuration - meaning P6SMB9.1CAHE3_A/H provides symmetrical clamping for both positive and negative transients without polarity dependence. This eliminates the need for orientation during placement and enables use on AC-coupled or floating signal paths, unlike unidirectional variants (e.g., P6SMB9.1A) that require correct cathode alignment.
Is P6SMB9.1CAHE3_A/H qualified for automotive applications?
Yes, P6SMB9.1CAHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and ESD per AEC-Q101 Rev D, making it suitable for under-hood and cabin electronics including engine control units, body controllers, and ADAS sensor modules.
What is the maximum clamping voltage of P6SMB9.1CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB9.1CAHE3_A/H is 13.4 V, measured at 44.8 A peak pulse current using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream 3.3 V or 5 V ICs remain within safe absolute maximum ratings during transient events.
Can P6SMB9.1CAHE3_A/H replace P6SMB9.1A in an existing design?
No - P6SMB9.1CAHE3_A/H is bidirectional while P6SMB9.1A is unidirectional. Substituting them requires verifying circuit topology: P6SMB9.1CAHE3_A/H may be used only where polarity is undefined or AC-coupled, whereas P6SMB9.1A requires strict cathode orientation. Layout changes are unnecessary, but functional validation of clamping symmetry is mandatory.
What is the thermal resistance of P6SMB9.1CAHE3_A/H, and how does it affect PCB layout?
P6SMB9.1CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe operation at full 600 W pulse rating, PCB copper pads must follow Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum pad size per terminal - smaller pads increase thermal impedance and risk junction overheating during repetitive surges.
P6SMB9.1CAHE3_A/H 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/H FAQ
1.How can I place an order for P6SMB9.1CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHE3_A/H 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/H reliable?
The price and inventory of P6SMB9.1CAHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHE3_A/H?
P6SMB9.1CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHE3_A/H 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/H?
For technical support, including P6SMB9.1CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB9.1CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHE3_A/H?
All P6SMB9.1CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHE3_A/H Tags
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