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Vishay General Semiconductor - Diodes Division P6SMB91AHE3_B/H
- Part No.:
- P6SMB91AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHE3_B/H.pdf
- Description:
- 600W,91V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
P6SMB91AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the 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 MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power supplies.
For engineers reviewing the P6SMB91AHE3_B/H datasheet, P6SMB91AHE3_B/H pinout, P6SMB91AHE3_B/H application, or P6SMB91AHE3_B/H equivalent, this AEC-Q101 qualified TVS offers validated surge robustness, low clamping ratio (VC/VBR ≈ 1.37), and RoHS-compliant matte tin terminations suitable for automated SMT assembly and high-reliability automotive ECUs.
Technical Context
This unidirectional TVS operates with a cathode-band polarity marking and exhibits fast response time (<1 ns), low incremental surge resistance, and excellent clamping capability under repetitive 10/1000 μs transients at 0.01% duty cycle. Its glass-passivated junction ensures stable VBR temperature coefficient of +0.106 %/°C and reliable operation across -65 °C to +150 °C junction temperature range.
Designed for surface-mount PCB integration, it mounts on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal and meets MSL Level 1 per J-STD-020 with LF peak of 260 °C. The device delivers 5.0 W steady-state power dissipation at TA = 50 °C and withstands 100 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins under transient stress |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA, ensuring no false triggering during normal operation |
| VC @ IPPM | 125 V at 4.8 A - clamping voltage limits downstream circuit stress during 600 W transient events, enabling robust protection margin |
| IPPM | 4.8 A - peak pulse current handling capacity under standardized 10/1000 μs waveform, directly tied to 600 W rating |
| TJ max. | +150 °C - maximum junction temperature supports operation in under-hood automotive environments and enclosed industrial enclosures |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air determines required PCB copper area for thermal management |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unbanded end) | Reference node | Typically connected to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables suppression of high-energy transients common in 12 V/24 V automotive power nets and industrial motor drives |
| AEC-Q101 qualification (HE3 suffix) | Validates long-term reliability for automotive control modules, ADAS sensors, and body electronics without derating |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during clamping, protecting 100 V-rated MOSFETs and logic-level interfaces |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility with standard lead-free profiles up to 260 °C peak |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 μA at VWM) over lifetime and temperature extremes |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply rails feeding engine control units (ECUs) and lighting drivers from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp transients before LDO or DC-DC stage. Use Value: Withstands 600 W surges while limiting clamped voltage to 125 V, preserving 100 V input-rated regulators and preventing latch-up in microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt ESD and cable discharge events away from precision op-amps and ADC front-ends. Use Value: Sub-1 ns response and <1 μA leakage at 77.8 V ensure signal integrity remains uncompromised during normal operation and transient suppression. |
| Telecom Power Interface | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding PoE-powered Ethernet switch ports and DSL line cards against lightning-induced surges on DC bias lines. IC Role / Device Role / Timing Role: Primary protection device on 48 V DC input, coordinated with secondary GDT or polymer PTC for staged surge handling. Use Value: 125 V clamping voltage provides safe margin below 150 V isolation ratings of Ethernet magnetics and bridge rectifiers. |
Use Scenario: Suppressing commutation spikes from universal motor brushes in washing machines and vacuum cleaners. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp back-EMF spikes before they couple into MCU GPIOs or triac gate drivers. Use Value: 100 A IFSM rating accommodates repeated motor startup surges, while AEC-Q101 qualification ensures longevity in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5B | Same SMB package, VBR = 90–100 V, VC = 129 V @ 4.7 A, non-AEC-Q101 | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| 1.5SMC91A | Higher-power SMC package (1500 W), same VBR/VC specs, larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB layout change; used where higher single-pulse energy absorption is needed | Select when system-level surge tests exceed 600 W or require extended pulse duration handling |
Compared with SMAJ90A-E3/5B, P6SMB91AHE3_B/H adds AEC-Q101 validation and tighter VBR tolerance (±5% vs. ±5.6%), making it preferable for automotive designs; versus 1.5SMC91A, it saves board space and cost but trades off absolute energy handling capacity.
Availability
P6SMB91AHE3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply protection requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for P6SMB91AHE3_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 is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and performance in harsh environments.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom applications, with design focus on low clamping voltage, AEC-Q101 compliance, and robust SMT manufacturability.
FAQ
What is the breakdown voltage tolerance for P6SMB91AHE3_B/H?
The P6SMB91AHE3_B/H has a breakdown voltage (VBR) range of 86.5 V to 95.5 V at test current IT = 1.0 mA, corresponding to a ±5% tolerance about the nominal 91 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature ranges, critical for protecting 100 V-rated downstream components in automotive power systems.
Is P6SMB91AHE3_B/H suitable for bidirectional transient protection?
No, P6SMB91AHE3_B/H is a unidirectional TVS diode, identified by its cathode band marking and specified VWM/VBR values for reverse-bias operation only. For bidirectional protection, Vishay offers the P6SMB91CA variant; using P6SMB91AHE3_B/H in AC-coupled or symmetrical signal paths would result in forward conduction and failure during negative transients.
What does the "HE3_B/H" suffix indicate in P6SMB91AHE3_B/H?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "B" indicates AEC-Q101 qualification level for devices from P6SMB6.8A to P6SMB220A; "H" specifies 7" diameter plastic tape-and-reel packaging with 750 units per reel. This full suffix confirms automotive-grade reliability, regulatory compliance, and SMT-ready packaging for high-volume manufacturing.
How does P6SMB91AHE3_B/H perform under elevated ambient temperatures?
P6SMB91AHE3_B/H derates linearly above TA = 25 °C per Figure 2 in the datasheet: peak pulse power drops to ~400 W at 85 °C ambient and ~200 W at 125 °C. Its RθJA = 100 °C/W requires adequate PCB copper area (0.2" × 0.2" pads per terminal) to maintain TJ ≤ 150 °C during repetitive surges in under-hood or enclosed industrial environments.
Can P6SMB91AHE3_B/H replace older P6SMB91A variants in existing designs?
Yes, P6SMB91AHE3_B/H is a direct replacement for legacy P6SMB91A parts with identical electrical specs, SMB package dimensions, and pinout. The HE3_B/H version adds AEC-Q101 qualification and RoHS compliance, making it suitable for new automotive designs and backward-compatible in commercial/industrial upgrades where enhanced reliability is beneficial.
P6SMB91AHE3_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:
- 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:
- 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)
P6SMB91AHE3_B/H FAQ
1.How can I place an order for P6SMB91AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHE3_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 P6SMB91AHE3_B/H reliable?
The price and inventory of P6SMB91AHE3_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 P6SMB91AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB91AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHE3_B/H?
P6SMB91AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHE3_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 P6SMB91AHE3_B/H?
For technical support, including P6SMB91AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB91AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHE3_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 P6SMB91AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB91AHE3_B/H?
All P6SMB91AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHE3_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 P6SMB91AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB91AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHE3_B/H Tags
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