My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB91AHE3_A/H
- Part No.:
- P6SMB91AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHE3_A/H.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,434
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB91AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB91AHE3_A/H datasheet, P6SMB91AHE3_A/H pinout, P6SMB91AHE3_A/H application, or P6SMB91AHE3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, and clamping performance under repetitive surge conditions per J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuit nodes, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage behavior (<1.0 µA at VWM = 77.8 V) and fast response time (<1 ns), enabling suppression of ESD, inductive switching spikes, and lightning-induced surges before downstream components are damaged.
The device is rated for 150 °C maximum junction temperature and exhibits low incremental surge resistance, delivering consistent clamping across its 600 W peak pulse power capability. Its thermal resistance (RθJA = 100 °C/W) assumes mounting on 0.2" × 0.2" copper pads - critical for sustaining repetitive 0.01% duty cycle pulses without thermal runaway.
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 voltage threshold where clamping begins |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 125 V at 4.8 A - clamped voltage during 600 W transient, limiting stress on protected ICs |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, validated for 0.01% duty cycle |
| Junction Temp | -65 °C to +150 °C - enables use in automotive under-hood and industrial ambient environments |
| Package | SMB (DO-214AA) - standardized surface-mount footprint with 5.59 mm × 4.06 mm body and matte tin leads |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling and HTRB testing |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V rail or sensor output); band denotes this end |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against high-energy transients like ISO 7637-2 Pulse 5a without derating at TA ≤ 25 °C |
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and low leakage drift over temperature and lifetime |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without preconditioning or baking |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics requiring zero-defect reliability |
| Low profile SMB package | Reduces board space vs. SMA/SMB alternatives while maintaining 0.106 g unit weight for automated placement |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules from load dump transients up to 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rail to clamp surges before DC-DC converter input stage. Use Value: Limits voltage to 125 V during 600 W pulses, preventing overvoltage failure of automotive-grade buck controllers. | Use Scenario: Safeguarding analog outputs of pressure sensors exposed to inductive coupling in factory automation. IC Role / Device Role / Timing Role: Parallel-connected clamping device on 0–10 V output line, referenced to system ground. Use Value: Sub-1 ns response ensures transients are suppressed before ADC sampling window, preserving measurement integrity. |
| Telecom DC Power Input | Consumer Appliance Motor Drive |
Use Scenario: Guarding PoE-powered switch ports against Ethernet cable ESD events and induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on 57 V DC input, downstream of primary surge filter. Use Value: 77.8 V stand-off supports IEEE 802.3af/bt compliance while clamping to 125 V within safe margin of 100 V-rated FETs. | Use Scenario: Shielding microcontroller GPIOs driving relay coils in smart HVAC systems. IC Role / Device Role / Timing Role: Localized TVS on coil flyback node, cathode tied to MCU I/O, anode to ground. Use Value: 4.8 A IPPM handles typical 100 ms inductive kick energy without degradation after >1000 cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5B | Same 90 V VBR range but 400 W PPPM; SMA package (larger footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W headroom |
| 1.5SMC91A | Identical VBR/VC specs but SMC package (7.11 mm × 6.22 mm); same 600 W rating and AEC-Q101 option available | Requires PCB layout change due to larger pad area and 0.25 mm height increase | Choose when thermal margin is critical and board space allows SMC's lower RθJA (50 °C/W) |
Compared with SMAJ90A-E3/5B and 1.5SMC91A, P6SMB91AHE3_A/H delivers AEC-Q101 assurance in the smallest standardized footprint (SMB) while maintaining full 600 W surge capacity - making it optimal for space-constrained automotive and industrial modules where qualification and size are co-priorities.
Availability
P6SMB91AHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC input conditioning, and consumer appliance motor drive circuits requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for P6SMB91AHE3_A/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, rectifiers, and protection devices with emphasis on reliability, precision, and application-specific qualification.
The P6SMB Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where voltage surges threaten functional safety and long-term operation.
FAQ
What is the breakdown voltage tolerance for P6SMB91AHE3_A/H?
The P6SMB91AHE3_A/H has a specified breakdown voltage range of 86.5 V to 95.5 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 91 V rating. This tight VBR spread ensures predictable clamping onset across production lots and temperature ranges, critical for designs requiring precise overvoltage thresholds. The value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024.
Is P6SMB91AHE3_A/H suitable for automotive applications?
Yes, P6SMB91AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix, indicating RoHS-compliant construction with AEC-Q101 stress testing. It supports under-hood and body electronics applications such as power distribution modules and sensor interfaces where junction temperatures reach 150 °C and surge immunity must meet ISO 7637-2 requirements. The qualification covers HTGB, HTRB, and temperature cycling per the standard.
What is the maximum clamping voltage of P6SMB91AHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB91AHE3_A/H is 125 V at a peak pulse current (IPPM) of 4.8 A, tested with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is guaranteed across the full operating temperature range. It reflects the device's low dynamic impedance and ensures downstream components rated for ≤130 V remain within safe operating limits.
Does P6SMB91AHE3_A/H have bidirectional capability?
No, P6SMB91AHE3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in the part number. Its polarity is defined by a cathode band; it conducts only during reverse-bias overvoltage events and blocks forward current like a standard diode. For bidirectional protection, Vishay offers P6SMB91CA variants - which are functionally distinct and not interchangeable with P6SMB91AHE3_A/H without circuit redesign.
What is the thermal resistance of P6SMB91AHE3_A/H and how does it affect layout?
P6SMB91AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per the Vishay datasheet; reducing pad area increases thermal impedance and risks exceeding 150 °C junction temperature during repetitive surges. Layout must replicate the specified copper area to maintain rated 600 W pulse capability and avoid premature thermal failure.
P6SMB91AHE3_A/H 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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for P6SMB91AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHE3_A/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_A/H reliable?
The price and inventory of P6SMB91AHE3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB91AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHE3_A/H?
P6SMB91AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHE3_A/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_A/H?
For technical support, including P6SMB91AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB91AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHE3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB91AHE3_A/H?
All P6SMB91AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHE3_A/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_A/H part is unused and in its original packaging.
Return procedure for P6SMB91AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHE3_A/H 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 …
