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Vishay General Semiconductor - Diodes Division P6SMB9.1CA-E3/5B
- Part No.:
- P6SMB9.1CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB9.1CA-E3/5B.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
P6SMB9.1CA-E3/5B 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 = 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 IC inputs in automotive sensor interfaces, industrial I/O modules, and telecom line cards against ESD and inductive switching transients.
For engineers reviewing the P6SMB9.1CA-E3/5B datasheet, P6SMB9.1CA-E3/5B pinout, P6SMB9.1CA-E3/5B application, or P6SMB9.1CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, RoHS-compliant packaging, and real-world use context for surge protection design validation.
Technical Context
The P6SMB9.1CA-E3/5B operates as a symmetrical bidirectional TVS, exhibiting identical clamping characteristics in both polarities - no cathode/anode distinction - enabling direct placement across differential or AC-coupled signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<50 μA at VWM = 7.78 V).
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it delivers sub-nanosecond response time and low incremental surge resistance (Rdyn ≈ 0.3 Ω derived from ΔVC/ΔIPPM), maintaining clamping integrity under repetitive 0.01% duty-cycle surges up to 150 °C junction temperature.
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 either direction |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 50 μA; sets safe operating margin below VBR |
| Clamping Voltage VC | 13.4 V at 44.8 A peak pulse current - actual voltage seen by protected circuit during 10/1000 μs transient |
| Peak Pulse Power PPPM | 600 W - energy-handling capacity for standardized 10/1000 μs surge waveform, derated above 25 °C ambient |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint, compatible with automated pick-and-place and reflow |
| AEC-Q101 Qualified | Yes - qualified for automotive applications per stress test requirements; ordering code suffix "_B" confirms qualification (P6SMB9.1CA-E3/5B includes "B") |
| RoHS Compliance | E3 suffix - lead-free, RoHS-compliant matte tin-plated terminals meeting J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with UL 94 V-0 flammability rating; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are unmarked due to bidirectional symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 2; no polarity marking required - functions as symmetrical surge shunt path |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable with Terminal 1; enables placement across any two-point voltage node without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage in both directions - eliminates need for polarity-aware layout in AC or differential signal protection |
| 600 W peak pulse rating | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation when mounted on 5.0 mm × 5.0 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes overvoltage stress on downstream ICs - critical for 3.3 V or 5 V logic interfacing with unprotected analog/sensor inputs |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - supports Tier-1 module designs |
| MSL Level 1 moisture sensitivity | Unlimited floor life at ≤30 °C/60% RH - no baking required prior to reflow, reducing manufacturing overhead |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load dump and inductive kickback in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair (e.g., LIN+ and LIN−) to clamp common-mode surges while preserving signal integrity. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers during 100 V/50 ms load dump events per ISO 16750-2. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring ESD and motor drive coupling noise. IC Role / Device Role / Timing Role: Shunt device connected between input terminal and ground to divert >15 kV contact ESD (IEC 61000-4-2) away from op-amp front-end. Use Value: Maintains <1 μA leakage at 24 V supply, avoiding offset error in precision current-to-voltage conversion stages. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE interface ICs from lightning-induced surges on RJ45 ports in enterprise switches. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices on differential pairs (e.g., TX+/TX−) to suppress mode-common transients without disrupting 100BASE-TX signaling. Use Value: Clamps to 13.4 V within <1 ns, limiting induced voltage across transformer secondary to safe levels for 3.3 V PHY I/O. |
Use Scenario: Adding secondary-level ESD protection on USB 2.0 D+/D− lines behind primary protection in smartphones and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 200 pF at 0 V) bidirectional clamp minimizing signal distortion at 480 Mbps data rates. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without performance degradation or parametric shift post-test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Unidirectional; VBR = 9.0–10.0 V; same SMB package but requires external polarity management | Only suitable where circuit topology enforces defined DC bias - not drop-in for AC or floating nodes | Select only if system ground reference is fixed and reverse conduction must be blocked |
| SMCJ9.0CA | Higher power rating (1500 W); larger SMC (DO-214AB) package; VBR = 9.0–10.0 V; same bidirectional function | Used in higher-energy environments (e.g., 24 V industrial power rails) where 600 W is insufficient | Choose when surge threat level exceeds IEC 61000-4-5 Line-to-Line 2 kV/12 Ω test requirement |
Compared with SMAJ9.0A and SMCJ9.0CA, the P6SMB9.1CA-E3/5B offers optimal balance of compact SMB footprint, certified AEC-Q101 reliability, and precise 9.1 V clamping for cost-sensitive, space-constrained bidirectional protection - making it preferred for automotive body electronics and consumer interface ports.
Availability
P6SMB9.1CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial I/O terminals, and telecom line card designs requiring stable component supply, RoHS compliance, and AEC-Q101 qualification.
Supply support for P6SMB9.1CA-E3/5B 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series is engineered for robust transient suppression in harsh environments, targeting design-in for automotive ECUs, industrial automation, and infrastructure equipment where failure modes must be mitigated without increasing board area.
FAQ
What is the exact breakdown voltage range for P6SMB9.1CA-E3/5B?
The P6SMB9.1CA-E3/5B has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at a test current of 1.0 mA, measured in both directions due to its bidirectional construction. This tight ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes from −65 °C to +150 °C. The value is confirmed in Vishay's official datasheet revision 09-Jan-2024, Document Number 88370.
Is P6SMB9.1CA-E3/5B AEC-Q101 qualified?
Yes, P6SMB9.1CA-E3/5B is AEC-Q101 qualified. The "B" in the suffix "/5B" explicitly denotes AEC-Q101 qualification per Vishay's ordering information table (page 3 of datasheet 88370). This includes full stress testing for temperature cycling, high-temperature reverse bias, and ESD robustness - making P6SMB9.1CA-E3/5B suitable for automotive body control modules and ADAS sensor interfaces.
How does P6SMB9.1CA-E3/5B differ from unidirectional variants like P6SMB9.1A?
P6SMB9.1CA-E3/5B is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas P6SMB9.1A is unidirectional with a cathode band and conducts only in reverse bias. The "CA" suffix indicates bidirectionality, resulting in identical VBR, VC, and leakage specs for positive and negative transients - critical for protecting AC-coupled or floating signal lines where voltage polarity is undefined.
What is the maximum clamping voltage of P6SMB9.1CA-E3/5B under surge conditions?
The maximum clamping voltage (VC) of P6SMB9.1CA-E3/5B is 13.4 V at a peak pulse current (IPPM) of 44.8 A, tested with a 10/1000 μs waveform. This value represents the worst-case voltage imposed on the protected circuit during a standardized surge event and is validated per JEDEC standards. It remains stable across operating temperatures up to 125 °C ambient.
Can P6SMB9.1CA-E3/5B be used in place of SMAJ9.0CA in an existing design?
No - P6SMB9.1CA-E3/5B is not a direct replacement for SMAJ9.0CA. While both are bidirectional SMB TVS diodes, SMAJ9.0CA has VBR = 9.0–10.0 V and VC = 14.4 V, differing from P6SMB9.1CA-E3/5B's tighter VBR (8.65–9.55 V) and lower VC (13.4 V). Substitution requires verification of system-level clamping margin and may affect ESD immunity margin in sensitive analog paths.
P6SMB9.1CA-E3/5B 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB9.1CA-E3/5B FAQ
1.How can I place an order for P6SMB9.1CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB9.1CA-E3/5B 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 P6SMB9.1CA-E3/5B reliable?
The price and inventory of P6SMB9.1CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB9.1CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB9.1CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB9.1CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB9.1CA-E3/5B?
P6SMB9.1CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB9.1CA-E3/5B 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 P6SMB9.1CA-E3/5B?
For technical support, including P6SMB9.1CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB9.1CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB9.1CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB9.1CA-E3/5B 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 P6SMB9.1CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB9.1CA-E3/5B?
All P6SMB9.1CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB9.1CA-E3/5B, 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 P6SMB9.1CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB9.1CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB9.1CA-E3/5B Tags
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