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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHM3/I
- Part No.:
- P6SMB9.1CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHM3/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,116
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Product details
Overview
P6SMB9.1CAHM3/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 or power lines. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 13.4 V maximum clamping voltage (VC) at 44.8 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P6SMB9.1CAHM3/I datasheet, P6SMB9.1CAHM3/I pinout, P6SMB9.1CAHM3/I application, or P6SMB9.1CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, low clamping ratio (VC/VBR ≈ 1.47), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance supports effective energy diversion during ESD or lightning-induced surges.
The P6SMB9.1CAHM3/I is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive applications when ordered with HM3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins in both directions |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse voltage before significant leakage; ensures no conduction during normal operation |
| Clamping Voltage VC | 13.4 V at 44.8 A IPPM - limits transient voltage seen by protected circuitry under 600 W surge conditions |
| Peak Pulse Power PPPM | 600 W with 10/1000 µs waveform - specifies transient energy handling capacity at 0.01% duty cycle |
| Maximum Leakage ID | 50 µA at VWM - ensures minimal standby current draw and signal integrity in high-impedance circuits |
| Operating Temperature | −65 °C to +150 °C - supports deployment in under-hood automotive, industrial control, and outdoor telecom environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per HM3 suffix |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either end serves as anode or cathode depending on transient polarity; no functional distinction in layout |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 surge events (e.g., 4 kV line-to-line) without derating in standard PCB layouts |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive environmental requirements and eliminates corrosive halogen emissions during reflow or failure |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking, reducing manufacturing overhead |
| Glass-passivated junction | Provides stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pairs or supply rails upstream of interface ICs. Use Value: Limits transient excursions to ≤13.4 V, preventing latch-up or gate oxide damage in 5 V/3.3 V logic interfaces while maintaining signal fidelity. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input terminals to shunt surge energy before reaching optocoupler or MCU GPIO. Use Value: Withstands repetitive 600 W surges at 0.01% duty cycle, enabling reliable operation in factory-floor environments with frequent motor switching. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding Ethernet PHY front-end circuits and PoE injectors from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across each data pair (e.g., TX+/TX−) to clamp common-mode transients before magnetics. Use Value: Fast <1 ns response and symmetrical clamping ensure minimal signal distortion while meeting IEC 61000-4-5 Level 3 (2 kV line-earth) requirements. |
Use Scenario: Adding secondary-level surge immunity to AC-DC adapter outputs feeding USB-C PD or wireless charging circuits. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector pins to suppress ESD (IEC 61000-4-2 ±8 kV contact) before LDO or battery management IC. Use Value: 50 µA max leakage at 7.78 V prevents quiescent current degradation in always-on power paths, preserving standby efficiency. |
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; 9.0 V VBR min (8.55 V), 14.5 V VC at 41.4 A; lower PPPM (400 W) | Requires external polarity awareness; unsuitable for AC-coupled or floating differential lines | Select only if unidirectional clamping suffices and board space allows SMA package (larger than SMB) |
| SMCJ9.0CA | Bidirectional; 9.0 V VBR min (8.55 V), 14.4 V VC at 119 A; higher PPPM (1500 W); larger SMC (DO-214AB) package | Higher surge margin but requires 30% more PCB area and different pad layout | Choose when system-level surge testing exceeds 600 W (e.g., IEC 61000-4-5 Level 4) and layout permits SMC footprint |
Compared with SMAJ9.0A and SMCJ9.0CA, the P6SMB9.1CAHM3/I delivers optimal balance of bidirectional protection, compact SMB footprint, AEC-Q101 qualification, and 600 W surge capability - making it preferred for space-constrained automotive and industrial modules where polarity-agnostic clamping is mandatory.
Availability
P6SMB9.1CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply with halogen-free, AEC-Q101-qualified TVS protection.
Supply support for P6SMB9.1CAHM3/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 targets cost-sensitive yet robust transient suppression needs in automotive, industrial, and communications equipment - delivering standardized 600 W surge capability in the compact SMB package with AEC-Q101 variants for mission-critical use.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHM3/I?
The "CA" suffix in P6SMB9.1CAHM3/I denotes a bidirectional configuration, meaning the device clamps transient overvoltages equally in both polarities. Unlike unidirectional "A" variants, P6SMB9.1CAHM3/I has no cathode band marking and is used where signal lines lack defined polarity - such as differential buses or AC-coupled interfaces. This is confirmed in Vishay's P6SMB datasheet revision 09-Jan-2024, section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P6SMB9.1CAHM3/I qualified to AEC-Q101?
Yes, P6SMB9.1CAHM3/I is AEC-Q101 qualified. The "HM3" suffix explicitly indicates halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness. This qualification is documented in the Vishay P6SMB datasheet (Document Number: 88370), page 1 under "FEATURES" and page 3 in "ORDERING INFORMATION".
What is the maximum clamping voltage of P6SMB9.1CAHM3/I and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB9.1CAHM3/I is 13.4 V, measured at a peak pulse current (IPPM) of 44.8 A using the standard 10/1000 µs double-exponential waveform. This value is listed in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay P6SMB datasheet (revision 09-Jan-2024) for part number P6SMB9.1CAHM3/I.
How does the SMB (DO-214AA) package of P6SMB9.1CAHM3/I compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB9.1CAHM3/I measures 3.94 mm × 2.20 mm × 1.52 mm - smaller than SMA (DO-214AC) and significantly smaller than SMC (DO-214AB). It offers 600 W surge capability in the most compact footprint among Vishay's 600 W TVS families, enabling dense PCB layouts. Pin-compatible alternatives like SMAJ9.0A (SMA) or SMCJ9.0CA (SMC) require different pad geometries and thermal relief patterns.
What is the leakage current specification for P6SMB9.1CAHM3/I at its stand-off voltage?
P6SMB9.1CAHM3/I has a maximum reverse leakage current (ID) of 50 µA at its stand-off voltage (VWM) of 7.78 V, measured at TA = 25 °C. This low leakage preserves signal integrity and minimizes power loss in high-impedance or battery-powered circuits - a key parameter verified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the official Vishay datasheet.
P6SMB9.1CAHM3/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:
- 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:
- 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)
P6SMB9.1CAHM3/I FAQ
1.How can I place an order for P6SMB9.1CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHM3/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 P6SMB9.1CAHM3/I reliable?
The price and inventory of P6SMB9.1CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHM3/I?
P6SMB9.1CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHM3/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 P6SMB9.1CAHM3/I?
For technical support, including P6SMB9.1CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHM3/I requirements.
6.How does Aetrix verify that P6SMB9.1CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHM3/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 P6SMB9.1CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHM3/I?
All P6SMB9.1CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHM3/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 P6SMB9.1CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHM3/I Tags
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