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Vishay General Semiconductor - Diodes Division P6SMB91CAHE3_B/H
- Part No.:
- P6SMB91CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHE3_B/H.pdf
- Description:
- 600W,91V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,085
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Product details
Overview
P6SMB91CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 125 V maximum clamping voltage (VC) at 4.8 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects signal lines and power rails in automotive sensor interfaces and industrial control inputs against ESD and inductive switching transients.
For engineers reviewing the P6SMB91CAHE3_B/H datasheet, P6SMB91CAHE3_B/H pinout, P6SMB91CAHE3_B/H application, or P6SMB91CAHE3_B/H equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for under-hood automotive modules and high-reliability industrial PCBs requiring robust transient immunity without polarity constraints.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse (or forward, in bidirectional mode) voltage exceeds VWM = 77.8 V, it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), enabling protection of 3.3 V–24 V logic interfaces and analog sensor front-ends.
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and TJ(max) = +150 °C, supporting operation in engine control units and motor drives where ambient temperatures exceed 105 °C. The bidirectional configuration eliminates need for polarity-aware layout, simplifying placement on differential buses like CAN FD or RS-485.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA test current - defines precise avalanche onset window for repeatable clamping behavior |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 125 V at 4.8 A - clamping voltage during 600 W transient, limiting downstream IC stress to safe margin below 130 V |
| PPPM | 600 W (10/1000 µs waveform) - handles typical ISO 7637-2 Pulse 1/2a/5a surges in 12 V automotive systems |
| IPPM | 4.8 A - peak surge current capability directly derived from VC and PPPM, used for PCB trace sizing |
| TJ(max) | +150 °C - enables use in under-hood ECUs and industrial inverters with high ambient thermal loads |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode (bidirectional) | One end of the back-to-back PN junction pair; connects to protected line or bus |
| Terminal 2 | Cathode (bidirectional) | Other end of the back-to-back PN junction pair; connects to ground or reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signals (e.g., CAN, RS-485) without polarity concerns |
| 600 W peak pulse power | Sustains ISO 7637-2 Pulse 5a (50 V, 100 ms) and IEC 61000-4-5 Combination Wave (0.5 kV) surges without degradation |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no baking required prior to assembly |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) over 15-year automotive service life |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver pins and analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and chassis ground, responding within <1 ns to clamp spikes above 77.8 V. Use Value: Prevents latch-up or gate oxide damage in 5 V/12 V interface ICs by limiting transient voltage to ≤125 V at 4.8 A surge. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across input terminals, absorbing repetitive 600 W transients without polarity reversal concerns. Use Value: Eliminates need for dual unidirectional TVS devices, reducing BOM count and PCB area while maintaining IEC 61000-4-4 Level 4 immunity. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers on base station line cards from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on differential bus lines, coordinated with GDT or MOV secondary protection stages. Use Value: Provides low-capacitance (<50 pF), fast-response first-stage suppression that preserves signal integrity up to 10 Mbps. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine motor inverters subjected to commutation noise and ESD events. IC Role / Device Role / Timing Role: Localized TVS at MCU I/O pins and half-bridge driver enable lines to prevent false triggering or latch-up. Use Value: Withstands 1000+ surge events at 4.8 A without parameter shift, ensuring field reliability over 10-year appliance lifetime. |
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 (85.5–94.5 V), 120 V VC @ 5.0 A, but not AEC-Q101 qualified | Limited to commercial/industrial use; lacks automotive reliability validation and high-temp derating data | Select when AEC-Q101 is not required and lower clamping voltage (120 V vs. 125 V) is prioritized |
| SMCJ91CA | Higher-power SMC package (1500 W PPPM), same 91 V VBR, 142 V VC @ 10.5 A - larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Used where higher surge energy (e.g., IEC 61000-4-5 4 kV) must be absorbed without cascading failure | Choose only if system-level testing confirms need for >600 W rating; otherwise P6SMB91CAHE3_B/H saves board space and cost |
Compared with SMAJ90CA, P6SMB91CAHE3_B/H adds AEC-Q101 qualification and tighter VBR tolerance (±5% vs. ±5% but wider min/max spread), while SMCJ91CA trades compactness for higher surge capacity - making P6SMB91CAHE3_B/H optimal for space-constrained automotive modules needing certified reliability.
Availability
P6SMB91CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom line card protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 compliance.
Supply support for P6SMB91CAHE3_B/H 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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, high-efficiency components for automotive, industrial, and computing markets.
The P6SMB Series targets cost-sensitive yet reliability-critical transient suppression needs in automotive electronics and industrial automation, delivering AEC-Q101 qualified TVS diodes in compact SMB packages with consistent 600 W surge capability.
FAQ
What does the "CA" suffix indicate in P6SMB91CAHE3_B/H?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB91CAHE3_B/H contains two oppositely oriented avalanche diodes in series, enabling symmetric clamping for both positive and negative transients. This eliminates polarity dependency during PCB layout and supports protection of AC-coupled or differential signal paths such as CAN, RS-485, or audio lines without requiring orientation verification.
Is P6SMB91CAHE3_B/H compatible with lead-free reflow soldering processes?
Yes, P6SMB91CAHE3_B/H meets MSL Level 1 per J-STD-020 and is rated for a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, supporting standard Pb-free SAC305 reflow profiles without pre-baking or special handling - essential for high-volume automotive electronics manufacturing.
How does the 125 V clamping voltage of P6SMB91CAHE3_B/H relate to system-level surge testing?
The 125 V clamping voltage (VC) of P6SMB91CAHE3_B/H is measured at 4.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value ensures downstream 130 V-rated ICs (e.g., certain CAN transceivers or microcontrollers) remain within safe operating limits during ISO 7637-2 Pulse 5a (load dump) events, provided PCB trace inductance and grounding are optimized to minimize overshoot beyond VC.
Does P6SMB91CAHE3_B/H require a heatsink for continuous power dissipation?
No - P6SMB91CAHE3_B/H is rated for 5.0 W steady-state power dissipation (PD) only when mounted on an infinite heatsink at TA = 50 °C. In normal operation, it handles only transient energy; its RθJA = 100 °C/W means continuous DC power dissipation is negligible. Thermal design focuses on transient energy absorption, not steady-state cooling.
What is the significance of the "HE3_B/H" suffix in P6SMB91CAHE3_B/H?
The "HE3" indicates RoHS-compliant and AEC-Q101 qualified construction; "B" denotes AEC-Q101 qualification for the 6.8 V–220 V voltage range; and "H" specifies packaging in 7" diameter plastic tape and reel (750 units per reel). This full suffix confirms P6SMB91CAHE3_B/H is automotive-grade, traceable, and ready for automated SMT placement in Tier 1 production environments.
P6SMB91CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB91CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHE3_B/H 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/H reliable?
The price and inventory of P6SMB91CAHE3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHE3_B/H?
P6SMB91CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHE3_B/H 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/H?
For technical support, including P6SMB91CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHE3_B/H requirements.
6.How does Aetrix verify that P6SMB91CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHE3_B/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHE3_B/H?
All P6SMB91CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHE3_B/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB91CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CAHE3_B/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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