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Vishay General Semiconductor - Diodes Division P6SMB91AHE3/52
- Part No.:
- P6SMB91AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHE3/52.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,327
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Product details
Overview
P6SMB91AHE3/52 from Vishay General Semiconductor is a unidirectional 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, and 600 W peak pulse power (10/1000 μs). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and automotive electronics.
For engineers reviewing the P6SMB91AHE3/52 datasheet, P6SMB91AHE3/52 pinout, P6SMB91AHE3/52 application, or P6SMB91AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HE3 suffix), 77.8 V stand-off voltage (VWM), <1.0 μA reverse leakage at VWM, and MSL Level 1 moisture sensitivity.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, conducting only when transient voltage exceeds its reverse stand-off voltage (77.8 V) and entering avalanche breakdown near 91 V to limit downstream voltage to ≤125 V. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
Designed for automated SMT placement, it delivers fast response time (<1 ns), meets J-STD-020 MSL Level 1 (peak reflow 260 °C), and supports repetitive 0.01% duty cycle surges. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads.
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 range for reliable overvoltage triggering |
| VWM | 77.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 125 V at 4.8 A peak pulse current - clamped voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 600 W - peak transient power handling capability under standardized 10/1000 μs waveform |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint and matte tin-plated leads |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during transient clamp event |
| Cathode | High-side connection point | Connected to protected line (e.g., power rail or signal); carries full surge current into anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and low leakage across temperature and life cycles |
| 600 W peak pulse power (10/1000 μs) | Robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
| Low profile SMB package | Enables high-density PCB layouts while maintaining thermal performance on 5 mm × 5 mm copper pads |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients within nanoseconds to prevent latch-up or damage to front-end amplifiers. Use Value: Maintains signal integrity below 125 V clamp level while drawing <1 μA at 77.8 V, minimizing impact on sensor bias networks. |
Use Scenario: Safeguarding 24 V DC input rails in PLC modules and motor drives against switching surges from relay coils and solenoids. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor absorbing 600 W pulses without degradation, enabling compliance with IEC 61000-4-4 EFT immunity. Use Value: Withstands repetitive 0.01% duty cycle surges and operates up to +150 °C junction temperature in enclosed enclosures. |
| Consumer Device USB Port Protection | Telecom Line Interface Surge Suppression |
|
Use Scenario: Shielding USB 2.0 data lines and VBUS in set-top boxes and smart displays from ESD and cable-induced transients. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS (typ. <100 pF) placed on VBUS and D+/D− lines to meet IEC 61000-4-2 ±15 kV contact discharge. Use Value: Fast sub-nanosecond response limits voltage overshoot to ≤125 V, preventing damage to USB PHY and controller ICs. |
Use Scenario: Front-end protection of Ethernet PHYs and RS-485 transceivers in network switches and base station equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on differential pairs or power inputs, coordinated with GDT or MOV secondary protection stages. Use Value: 600 W rating and 125 V clamping enable robust coordination with upstream protectors while maintaining low let-through energy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/52 | Same SMB package, 90 V VBR (85.5–94.5 V), 129 V VC @ 4.7 A, non-AEC-Q101 | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and slightly higher clamping voltage is acceptable |
| 1.5SMC91A | Higher-power SMC package (1500 W), same 91 V VBR, 125 V VC, but larger footprint and higher RθJA | Used where higher single-pulse energy absorption is needed, e.g., primary AC input stages | Choose only if board space allows SMC and system requires >600 W single-event capability |
Compared with SMAJ90A-E3/52 and 1.5SMC91A, P6SMB91AHE3/52 uniquely combines AEC-Q101 qualification, SMB footprint, and 600 W capability-making it optimal for space-constrained automotive and industrial PCBs requiring validated reliability.
Availability
P6SMB91AHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power rails, consumer USB port protection, and telecom line interface designs requiring stable component supply and AEC-Q101 compliance.
Supply support for P6SMB91AHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade validation.
The P6SMB Series targets cost-effective, high-reliability transient suppression in space-constrained SMT applications-designed specifically for automotive, industrial, and telecom systems needing robust ESD and surge immunity without sacrificing board area.
FAQ
What is the breakdown voltage tolerance of P6SMB91AHE3/52?
The P6SMB91AHE3/52 has a specified breakdown voltage range of 86.5 V to 95.5 V at 1.0 mA test current, representing ±5% tolerance around the nominal 91 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature ranges, critical for predictable protection in automotive and industrial systems where P6SMB91AHE3/52 is deployed.
Is P6SMB91AHE3/52 suitable for bidirectional signal line protection?
No, P6SMB91AHE3/52 is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (VWM, VBR) for reverse-biased operation only. For bidirectional protection-such as on AC-coupled data lines or differential buses-use the CA-suffixed variant P6SMB91CAHE3/52, which provides symmetrical clamping in both polarities and is explicitly listed in the Vishay P6SMB series documentation.
Does P6SMB91AHE3/52 require derating at elevated ambient temperatures?
Yes, P6SMB91AHE3/52 must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet (Document Number 88370). At 85 °C ambient, its peak pulse power drops to approximately 420 W (70% of 600 W), and at 125 °C, it falls to ~240 W. Designers must apply this derating when using P6SMB91AHE3/52 in high-temperature enclosures or near heat sources to maintain safe clamping performance.
What is the moisture sensitivity level (MSL) rating for P6SMB91AHE3/52?
P6SMB91AHE3/52 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can withstand peak reflow temperatures up to 260 °C without baking or dry-pack requirements. This eliminates handling constraints during manufacturing and supports direct placement into standard lead-free SMT reflow processes-key for high-yield production of boards using P6SMB91AHE3/52.
How does the clamping voltage of P6SMB91AHE3/52 compare to its breakdown voltage?
P6SMB91AHE3/52 clamps at 125 V (VC) when subjected to its rated 4.8 A peak pulse current (IPPM), which is ~37% higher than its minimum breakdown voltage (86.5 V). This voltage margin reflects the device's incremental surge resistance and ensures protected circuits experience no more than 125 V during worst-case transients-critical for safeguarding 100 V-rated components downstream of P6SMB91AHE3/52.
P6SMB91AHE3/52 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB91AHE3/52 FAQ
1.How can I place an order for P6SMB91AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHE3/52 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 P6SMB91AHE3/52 reliable?
The price and inventory of P6SMB91AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB91AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHE3/52?
P6SMB91AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHE3/52 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 P6SMB91AHE3/52?
For technical support, including P6SMB91AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHE3/52 requirements.
6.How does Aetrix verify that P6SMB91AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHE3/52 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 P6SMB91AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB91AHE3/52?
All P6SMB91AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHE3/52, 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 P6SMB91AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB91AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHE3/52 Tags
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