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Vishay General Semiconductor - Diodes Division P6SMB9.1CAHM3_B/I
- Part No.:
- P6SMB9.1CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CAHM3_B/I.pdf
- Description:
- 600W,9.1V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,441
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Product details
Overview
P6SMB9.1CAHM3_B/I 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 = 8.65–9.55 V at IT = 1.0 mA), and 13.4 V maximum clamping voltage (VC) at 44.8 A peak pulse current - deployed for ESD and surge protection on automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the P6SMB9.1CAHM3_B/I datasheet, P6SMB9.1CAHM3_B/I pinout, P6SMB9.1CAHM3_B/I application, or P6SMB9.1CAHM3_B/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, 13.4 V clamping performance at 44.8 A, MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical reverse/forward conduction behavior due to its bidirectional architecture. It exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of transients induced by inductive switching and lightning surges.
Designed for surface-mount assembly on PCBs with 0.2" × 0.2" copper pads per terminal, it delivers stable clamping across -65 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance requirements. Its glass-passivated junction ensures robust reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 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 operating voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V at 44.8 A - clamping voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 μs waveform) - peak surge energy handling capacity under standardized test conditions |
| TJ max. | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for reflow up to 260 °C peak |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common node in bidirectional clamp | Connected to protected line; conducts during negative transients relative to cathode reference |
| Cathode | Current exit point in forward bias; common node in bidirectional clamp | Connected to protected line; conducts during positive transients relative to anode reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage behavior in both polarities - eliminates need for polarity-aware layout |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation when properly mounted |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC J-STD-609A Class 1 and EU RoHS Directive 2011/65/EU |
| Low clamping ratio (VC/VBR) | 1.39 - tight margin between breakdown and clamping improves system-level overvoltage margin |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector interface to divert surge current away from signal conditioning circuitry. Use Value: Clamps transients to ≤13.4 V within nanoseconds, preserving integrity of 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Bidirectional clamp on 24 V DC input lines to absorb ±1 kV/500 A transients per IEC 61000-4-4. Use Value: Maintains functional safety by preventing latch-up or permanent damage to optocoupler input stages and level-shifting circuits. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side transient suppression on USB-C PD and AC/DC adapter output rails exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to USB port or DC jack to suppress ESD (IEC 61000-4-2 ±15 kV air) and fast transients. Use Value: 13.4 V clamping ensures downstream USB PMICs and Type-C controllers remain within absolute maximum ratings during fault conditions. |
Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers against lightning-induced surges entering via RJ-45 jacks. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into hybrid transformer module to clamp differential-mode transients before signal conditioning. Use Value: Symmetrical clamping prevents signal distortion on full-duplex data lines while meeting GR-1089-CORE telecom immunity requirements. |
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-E3/5B | Unidirectional; VBR = 8.55–9.45 V; VC = 14.4 V @ 39.6 A; non-AEC-Q101; E3 suffix (RoHS, not halogen-free) | Limited to single-polarity protection; requires explicit cathode orientation; unsuitable for automotive under-hood use | Select only for cost-sensitive commercial designs where bidirectionality and automotive qualification are unnecessary |
| SMCJ9.0CAHE3_A/H | Bidirectional; higher PPPM = 1500 W; VBR = 8.55–9.45 V; VC = 14.4 V @ 93.5 A; AEC-Q101 qualified; HE3 suffix (RoHS, not halogen-free) | Over-spec'd for 600 W needs; larger SMC (DO-214AB) package increases board area by ~40% | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 or when legacy SMC footprint is fixed |
Compared with SMAJ9.0A-E3/5B, P6SMB9.1CAHM3_B/I provides bidirectional symmetry and automotive qualification; compared with SMCJ9.0CAHE3_A/H, it offers identical clamping performance in a smaller SMB package with halogen-free construction - optimizing space, compliance, and application fit.
Availability
P6SMB9.1CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter protection requiring stable component supply, AEC-Q101 traceability, and halogen-free manufacturing compliance.
Supply support for P6SMB9.1CAHM3_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 TVS devices with emphasis on reliability, power efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust surge handling, low clamping voltage, and seamless SMT integration in space-constrained designs.
FAQ
What does the "CA" suffix indicate in P6SMB9.1CAHM3_B/I?
The "CA" suffix in P6SMB9.1CAHM3_B/I denotes a bidirectional Transient Voltage Suppressor - meaning it provides symmetrical clamping in both polarities, unlike unidirectional "A" variants. This eliminates polarity concerns during PCB layout and supports protection of AC-coupled or differential signal lines without directional constraints. The device maintains identical VBR, VC, and leakage characteristics in either direction, as confirmed in Vishay's P6SMB datasheet revision 09-Jan-2024.
Is P6SMB9.1CAHM3_B/I suitable for automotive applications?
Yes, P6SMB9.1CAHM3_B/I is AEC-Q101 qualified, as indicated by the "_B" suffix in its ordering code - confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. It is rated for operation from -65 °C to +150 °C and meets MSL Level 1 for lead-free reflow, making it appropriate for under-hood ECUs, ADAS camera modules, and body control units where reliability under thermal and mechanical stress is critical.
What is the maximum clamping voltage of P6SMB9.1CAHM3_B/I and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB9.1CAHM3_B/I is 13.4 V, measured at a peak pulse current (IPPM) of 44.8 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects the actual voltage seen by downstream circuitry during worst-case surge events - essential for verifying compatibility with 3.3 V, 5 V, or 12 V IC absolute maximum ratings.
How does the HM3 suffix affect the environmental compliance of P6SMB9.1CAHM3_B/I?
The "HM3" suffix in P6SMB9.1CAHM3_B/I indicates halogen-free, RoHS-compliant construction per JEDEC J-STD-609A Class 1 and EU Directive 2011/65/EU. Unlike standard "E3" parts, HM3 devices contain no brominated flame retardants or chlorine-based compounds in molding compounds or terminations - supporting green manufacturing requirements and reducing toxic gas emission during PCB rework or end-of-life processing.
What is the thermal resistance from junction to ambient for P6SMB9.1CAHM3_B/I?
The typical junction-to-ambient thermal resistance (RθJA) of P6SMB9.1CAHM3_B/I is 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and guides thermal design for sustained power dissipation - for example, at 5.0 W steady-state power (PD), junction temperature rise would be ~500 °C above ambient, confirming that PD rating applies only under pulsed or derated conditions, not continuous operation.
P6SMB9.1CAHM3_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)
P6SMB9.1CAHM3_B/I FAQ
1.How can I place an order for P6SMB9.1CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_B/I reliable?
The price and inventory of P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CAHM3_B/I?
P6SMB9.1CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_B/I?
For technical support, including P6SMB9.1CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB9.1CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CAHM3_B/I?
All P6SMB9.1CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CAHM3_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 P6SMB9.1CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB9.1CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CAHM3_B/I Tags
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