My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB91CAHE3/52
- Part No.:
- P6SMB91CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91CAHE3/52.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,836
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB91CAHE3/52 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, and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB91CAHE3/52 datasheet, P6SMB91CAHE3/52 pinout, P6SMB91CAHE3/52 application, or P6SMB91CAHE3/52 equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge protection design.
Technical Context
This device operates as a voltage-clamping transient suppressor with symmetrical reverse/forward conduction characteristics due to its bidirectional construction. It exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 600 W peak pulse power under JEDEC-standard 10/1000 µs waveform conditions at 0.01% duty cycle, with derating above TA = 25 °C per Fig. 2 in the datasheet.
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 the voltage threshold at which clamping begins in either polarity |
| Stand-off Voltage VWM | 77.8 V - maximum continuous reverse operating voltage before significant leakage occurs |
| Clamping Voltage VC | 125 V at 4.8 A peak pulse current - actual voltage seen by protected circuit during worst-case transient |
| Peak Pulse Power PPPM | 600 W with 10/1000 µs waveform - determines energy-handling capacity for surge events |
| Maximum Reverse Leakage ID | 1.0 µA at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Junction Temperature Range | -65 °C to +150 °C - supports operation in harsh environments including under-hood automotive applications |
| Thermal Resistance RθJA | 100 °C/W - defines temperature rise per watt dissipated without heatsinking; critical for layout thermal management |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional mode | No polarity marking on device body; terminals are functionally interchangeable for transient suppression |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional mode | Identical electrical behavior to anode; bidirectional operation eliminates need for orientation-dependent placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity constraints |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units and ADAS sensor interfaces |
| 600 W peak pulse power | Supports robust immunity to IEC 61000-4-5 Level 4 surges (4 kV line-to-line, 2 kV line-to-ground) |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream components during transient events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 5 V or 12 V interface ICs during 12 V system load dump events (up to 35 V sustained, 60 V transient). |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input channels to shunt induced transients before reaching optocoupler or microcontroller input stage. Use Value: Maintains functional safety integrity by limiting voltage to ≤125 V during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping element on data line pairs, coordinated with common-mode chokes and secondary GDTs. Use Value: Achieves >20 kV ESD air discharge immunity (IEC 61000-4-2) and withstands 10/700 µs telecom surges up to 1 kV. |
Use Scenario: Secondary-side overvoltage suppression on 5 V/9 V/12 V USB-C or wall adapter outputs exposed to capacitor discharge or hot-plug events. IC Role / Device Role / Timing Role: Fast-acting clamp between VOUT and GND to prevent overshoot exceeding 125 V during output short-circuit recovery. Use Value: Ensures compliance with UL 62368-1 transient voltage limits and prevents damage to connected mobile devices. |
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 90 V VBR range, but lower 400 W PPPM rating and higher VC (129 V); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; less suitable for IEC 61000-4-5 Level 4 testing | Select when board space is constrained and surge energy is ≤400 W |
| SMCJ91CA | Higher 1500 W PPPM rating, same VBR/VC, larger SMC (DO-214AB) package with lower RθJA (50 °C/W) | Better thermal performance and higher surge margin; requires larger PCB area | Select when extended surge endurance or improved thermal headroom is required |
Compared with SMAJ90CA and SMCJ91CA, P6SMB91CAHE3/52 offers balanced surge capability (600 W), AEC-Q101 qualification, and SMB footprint - making it optimal for cost-sensitive automotive and industrial designs where moderate energy handling and proven reliability are prioritized over extreme power rating or miniaturization.
Availability
P6SMB91CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB91CAHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets board-level transient protection in automotive, industrial, and communications systems - engineered for high-energy clamping, AEC-Q101 compliance, and seamless SMT integration.
FAQ
What is the breakdown voltage tolerance for P6SMB91CAHE3/52?
The P6SMB91CAHE3/52 has a specified breakdown voltage (VBR) 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 tolerance ensures predictable clamping onset across production lots and temperature ranges, critical for consistent protection in safety-critical automotive and industrial applications.
Is P6SMB91CAHE3/52 suitable for automotive applications?
Yes, P6SMB91CAHE3/52 is AEC-Q101 qualified (indicated by the "HE3" suffix), meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for automotive under-hood and cabin electronics. Its -65 °C to +150 °C junction temperature range further supports deployment in engine control units and ADAS sensor modules.
How does the bidirectional configuration of P6SMB91CAHE3/52 affect PCB layout?
The bidirectional nature of P6SMB91CAHE3/52 eliminates polarity marking requirements - both terminals are electrically identical - allowing unrestricted orientation during automated placement. This simplifies layout, reduces assembly errors, and enables use on AC-coupled lines or differential pairs without directional routing constraints, unlike unidirectional TVS diodes that require cathode alignment.
What is the maximum clamping voltage of P6SMB91CAHE3/52 under surge conditions?
The P6SMB91CAHE3/52 has a maximum clamping voltage (VC) of 125 V at 4.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during standardized surge testing and directly determines the safe operating margin for downstream 100 V-rated components such as certain MOSFETs and interface ICs.
Does P6SMB91CAHE3/52 require heatsinking for standard operation?
No, P6SMB91CAHE3/52 is designed for operation without external heatsinking when mounted on standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its RθJA of 100 °C/W and 5.0 W steady-state power dissipation (PD) rating ensure adequate thermal performance in typical PCB layouts; heatsinking is only needed for repetitive high-duty-cycle surge scenarios beyond datasheet derating curves.
P6SMB91CAHE3/52 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB91CAHE3/52 FAQ
1.How can I place an order for P6SMB91CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91CAHE3/52 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 P6SMB91CAHE3/52 reliable?
The price and inventory of P6SMB91CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB91CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91CAHE3/52?
P6SMB91CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91CAHE3/52 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 P6SMB91CAHE3/52?
For technical support, including P6SMB91CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB91CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB91CAHE3/52 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 P6SMB91CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB91CAHE3/52?
All P6SMB91CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91CAHE3/52, 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 P6SMB91CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB91CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91CAHE3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
