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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHM3_A/I
- Part No.:
- P6SMB9.1CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHM3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,763
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Product details
Overview
P6SMB9.1CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, 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), 7.78 V stand-off voltage (VWM), 13.4 V maximum clamping voltage (VC) at 44.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the P6SMB9.1CAHM3_A/I datasheet, P6SMB9.1CAHM3_A/I pinout, P6SMB9.1CAHM3_A/I application, or P6SMB9.1CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), low leakage (<50 μA at VWM), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It responds within <1 ns to transient overvoltages and maintains stable clamping performance across -65 °C to +150 °C junction temperature range.
Its glass-passivated junction ensures robust ESD and surge immunity, while the SMB package supports automated SMT placement and meets UL 94 V-0 flammability rating. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction for automotive-grade reliability.
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 begins |
| VWM | 7.78 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | 13.4 V at 44.8 A - clamped voltage during 600 W transient, limiting stress on downstream components |
| PPPM | 600 W - peak pulse power handling with 10/1000 μs waveform, enabling protection against lightning-induced surges |
| ID @ VWM | <50 μA - ultra-low reverse leakage preserves signal integrity in high-impedance circuits |
| RθJA | 100 °C/W - thermal resistance determines derating requirements for sustained power dissipation |
| TJ max | +150 °C - maximum junction temperature supports operation in under-hood automotive environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically - enables bidirectional clamping without orientation constraints during PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and JESD201 Class 2 whisker resistance for long-term solder joint reliability |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in 12 V/24 V vehicle power networks and industrial motor drives |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes overvoltage overshoot during surge events, reducing risk of IC latch-up or gate oxide damage |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt surge energy. Use Value: Prevents permanent damage to 5 V or 3.3 V interface ICs by limiting transient voltage to ≤13.4 V during 44.8 A surges. |
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 TVS on 24 V DC input lines to absorb repetitive switching transients. Use Value: Enables reliable operation at up to 150 °C ambient with <50 μA leakage, minimizing false triggering in high-noise factory environments. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and fast-charging devices. IC Role / Device Role / Timing Role: Clamping component across output capacitor to prevent overvoltage during feedback loop failure. Use Value: Maintains system safety certification by limiting fault voltage to 13.4 V - below SELV limits and IC absolute maximum ratings. |
Use Scenario: Surge protection on Ethernet PHY or RS-485 transceiver lines in network switches and base stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed between data line and ground to preserve signal integrity. Use Value: Delivers 600 W surge handling with minimal parasitic capacitance, avoiding signal distortion at 100 Mbps+ data rates. |
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 = 10.0–11.1 V; VC = 14.4 V @ 41.7 A; same SMB package | Requires correct polarity placement; not suitable for AC-coupled or differential lines without external bias | Select when unidirectional clamping suffices and cost optimization is prioritized over AEC-Q101 qualification |
| 1.5SMC9.1CA | Same bidirectional function; VBR = 8.65–9.55 V; VC = 13.4 V @ 44.8 A; larger SMC (DO-214AB) package | Higher thermal mass allows higher average power handling but requires larger PCB footprint | Choose for designs needing improved thermal performance in high-duty-cycle surge environments |
Compared with SMAJ9.0A and 1.5SMC9.1CA, P6SMB9.1CAHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it optimal for space-constrained automotive and industrial applications requiring certified reliability without layout redesign.
Availability
P6SMB9.1CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter secondary-side protection, and telecom line interface circuits requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB9.1CAHM3_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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and computing systems - engineered for robustness against ISO 7637-2, IEC 61000-4-5, and other harsh-environment surge standards.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning P6SMB9.1CAHM3_A/I provides symmetrical clamping in both forward and reverse directions, eliminating polarity concerns during PCB placement. This differs from unidirectional variants (e.g., P6SMB9.1AHM3_A/I), which require cathode alignment and only clamp in one direction. The CA version is essential for protecting AC-coupled signals, differential buses like CAN, or any circuit where voltage polarity may reverse.
Is P6SMB9.1CAHM3_A/I qualified for automotive use?
Yes, P6SMB9.1CAHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay documentation. This qualification validates its performance under accelerated stress tests including temperature cycling, humidity bias, and high-temperature operating life - specifically for use in automotive powertrain, chassis, and body electronics. It meets the reliability requirements for under-hood and cabin-mounted ECUs where junction temperatures reach +150 °C.
How does the clamping voltage of P6SMB9.1CAHM3_A/I compare to its breakdown voltage?
P6SMB9.1CAHM3_A/I has a breakdown voltage range of 8.65–9.55 V at 1.0 mA and a maximum clamping voltage of 13.4 V at 44.8 A. This yields a clamping ratio (VC/VBR(min)) of approximately 1.41 - indicating tight voltage control during surge events. That ratio ensures downstream ICs see minimal overvoltage stress, especially critical for 5 V or 3.3 V logic interfaces where even brief excursions above absolute maximum ratings can cause permanent damage.
What is the significance of the "HM3" suffix in P6SMB9.1CAHM3_A/I?
The "HM3" suffix in P6SMB9.1CAHM3_A/I indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance - verified for long-term reliability in lead-free soldering processes. Unlike "E3" (RoHS-compliant commercial grade) or "HE3" (AEC-Q101 + RoHS), HM3 adds halogen-free material compliance required by major automotive OEMs and green electronics initiatives, without compromising surge performance or thermal robustness.
Can P6SMB9.1CAHM3_A/I be used in place of P6SMB9.1A in existing designs?
No - P6SMB9.1CAHM3_A/I is bidirectional, whereas P6SMB9.1A is unidirectional. Substituting them without circuit review risks improper clamping during negative transients or reverse-bias conditions. Additionally, HM3 denotes AEC-Q101 qualification and halogen-free materials, while standard P6SMB9.1A lacks those certifications. Use P6SMB9.1CAHM3_A/I only where bidirectional protection and automotive-grade reliability are explicitly required.
P6SMB9.1CAHM3_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:
- 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_A/I FAQ
1.How can I place an order for P6SMB9.1CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_A/I reliable?
The price and inventory of P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHM3_A/I?
P6SMB9.1CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_A/I?
For technical support, including P6SMB9.1CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB9.1CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHM3_A/I?
All P6SMB9.1CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHM3_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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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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