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Vishay General Semiconductor - Diodes Division P6SMB91CAHE3_B/I
- Part No.:
- P6SMB91CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHE3_B/I.pdf
- Description:
- 600W,91V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,480
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Product details
Overview
P6SMB91CAHE3_B/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 91 V breakdown voltage (VBR), 125 V maximum clamping voltage (VC) at 4.8 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), making it suitable for protecting automotive-grade sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB91CAHE3_B/I datasheet, P6SMB91CAHE3_B/I pinout, P6SMB91CAHE3_B/I application, or P6SMB91CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and verified 125 V clamping performance under 10/1000 µs surge conditions.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. It exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to +150 °C junction temperature under defined PCB pad layouts.
The P6SMB91CAHE3_B/I delivers 600 W peak pulse power handling per the 10/1000 µs waveform standard, with a low incremental surge resistance that ensures stable clamping across repetitive transients. Its glass passivated chip junction and matte tin-plated terminals meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 86.5 V to 95.5 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins in both directions |
| Stand-off Voltage VWM | 77.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA, ensuring no false triggering during normal operation |
| Clamping Voltage VC | 125 V at 4.8 A IPPM - actual voltage seen by protected circuit during worst-case 10/1000 µs surge, critical for IC-level survivability |
| Peak Pulse Power PPPM | 600 W - energy-handling capacity under standardized 10/1000 µs waveform, derated above 25 °C ambient per Fig. 2 |
| Operating Temperature | -65 °C to +150 °C - validated junction/storage range supporting automotive under-hood and industrial control environments |
| AEC-Q101 Qualified | Yes - certified for automotive applications per stress test requirements including HTOL, TCT, and ESD, indicated by HE3 suffix and _B revision |
| Package | SMB (DO-214AA) - surface-mount outline with 0.205" × 0.220" footprint, compatible with automated placement and reflow profiles up to 260 °C peak |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity unmarked for bidirectional configuration; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional operation | Connected to line being protected; forms symmetrical clamping path with cathode during either polarity transient |
| Cathode | Current exit terminal in forward bias; common node in bidirectional operation | Connected to reference plane (e.g., ground or VCC); completes low-impedance surge shunt path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive switching or ESD without degradation under specified duty cycle (0.01 %) |
| AEC-Q101 qualified (HE3_B) | Validated for automotive electronics including engine control modules, ADAS sensors, and body control units |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for 3.3 V/5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow assembly without moisture sensitivity limitations or baking requirements |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground/VCC to limit transient voltage excursion. Use Value: Maintains signal integrity below 125 V clamping threshold during 10/1000 µs surges, preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff voltage (77.8 V) ensures no conduction during nominal 24 V operation; clamps >100 V spikes within nanoseconds. Use Value: Eliminates need for external series impedance or RC snubbers while meeting IEC 61000-4-5 Level 3 surge immunity requirements. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control Board |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers on telecom line cards from lightning-induced surges and EFT bursts. IC Role / Device Role / Timing Role: Placed differential-mode across data pair or common-mode to chassis ground to suppress asymmetric and symmetric transients. Use Value: 125 V clamping voltage preserves receiver common-mode range and prevents damage to 3.3 V transceiver inputs during 1 kV/2 kV surge tests. |
Use Scenario: Protecting microcontroller GPIOs and MOSFET gate drivers on washing machine or HVAC motor control boards from brush-commutator noise and relay bounce. IC Role / Device Role / Timing Role: Mounted directly at connector or IC pin to minimize inductance in clamping path and reduce voltage overshoot. Use Value: Glass-passivated junction ensures long-term reliability under repeated 600 W surge events typical in appliance end-of-life stress testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90CA | Same SMB package, 90 V VBR min/99 V max, 120 V VC at 5.0 A - slightly lower clamping but no AEC-Q101 qualification | Commercial-grade only; not validated for automotive temperature cycling or humidity testing | Select when AEC-Q101 compliance is unnecessary and tighter clamping margin is prioritized |
| SMCJ91CA | Higher-power SMC package (DO-214AB), same 91 V VBR, 130 V VC at 4.6 A - 1500 W PPPM rating | Larger footprint (0.285" × 0.285") requires PCB redesign; suited for higher-energy surge environments | Choose for industrial power supplies or EV charging stations needing >1 kW surge handling |
Compared with SMAJ90CA and SMCJ91CA, the P6SMB91CAHE3_B/I uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and 125 V clamping at 4.8 A-making it optimal for space-constrained automotive and industrial designs requiring certified reliability without layout change.
Availability
P6SMB91CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line card protection, and consumer appliance motor control boards requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB91CAHE3_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 protection devices with emphasis on high-reliability and automotive-grade validation.
The P6SMB series targets robust transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low-profile SMB packaging, and repeatable 600 W surge performance for automotive and industrial electronics.
FAQ
What does the "CA" suffix indicate in P6SMB91CAHE3_B/I?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB91CAHE3_B/I provides symmetrical clamping in both polarities-ideal for AC signal lines, differential buses, or floating references where polarity reversal may occur. This differs from unidirectional "A" variants that require correct anode/cathode orientation relative to ground.
Is P6SMB91CAHE3_B/I suitable for automotive applications?
Yes, the P6SMB91CAHE3_B/I is AEC-Q101 qualified, as confirmed by the "HE3" base suffix and "_B" revision code in its ordering designation. It has undergone stress testing for high-temperature operating life, temperature cycling, and ESD-making it appropriate for engine control units, ADAS camera modules, and body electronics where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of P6SMB91CAHE3_B/I under surge conditions?
The P6SMB91CAHE3_B/I has a maximum clamping voltage (VC) of 125 V at 4.8 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet and represents the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMB (DO-214AA) package of P6SMB91CAHE3_B/I compare to SMA or SMC packages?
The SMB package of P6SMB91CAHE3_B/I measures 0.205" × 0.220", smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). It offers a balance of surge capability (600 W), board space efficiency, and compatibility with standard pick-and-place equipment-unlike SMA which is limited to 400 W, or SMC which supports 1500 W but requires more PCB area.
Does P6SMB91CAHE3_B/I require special PCB layout considerations?
Yes-the P6SMB91CAHE3_B/I achieves rated 600 W pulse power only when mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal. Reducing pad size increases thermal resistance and degrades clamping performance; routing traces directly from pads minimizes inductance to preserve nanosecond-scale response time.
P6SMB91CAHE3_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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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)
P6SMB91CAHE3_B/I FAQ
1.How can I place an order for P6SMB91CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHE3_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 P6SMB91CAHE3_B/I reliable?
The price and inventory of P6SMB91CAHE3_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 P6SMB91CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHE3_B/I?
P6SMB91CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHE3_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 P6SMB91CAHE3_B/I?
For technical support, including P6SMB91CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHE3_B/I requirements.
6.How does Aetrix verify that P6SMB91CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHE3_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 P6SMB91CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHE3_B/I?
All P6SMB91CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHE3_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 P6SMB91CAHE3_B/I part is unused and in its original packaging.
Return procedure for P6SMB91CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CAHE3_B/I Tags
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Diodes Incorporated
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Diodes Incorporated
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