My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB91AHM3/I
- Part No.:
- P6SMB91AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHM3/I.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,499
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB91AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of sensitive electronics. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at IT = 1.0 mA), 77.8 V stand-off voltage (VWM), clamps to ≤125 V at 4.8 A peak pulse current (IPPM), and delivers 600 W peak pulse power with 10/1000 μs waveform - ideal for protecting MOSFETs and signal lines in industrial power supplies.
For engineers reviewing the P6SMB91AHM3/I datasheet, P6SMB91AHM3/I pinout, P6SMB91AHM3/I application, or P6SMB91AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package compatibility, and verified clamping performance under repetitive surge conditions per JESD22-B102 and J-STD-020 MSL Level 1.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and low incremental surge resistance. Its thermal resistance (RθJA = 100 °C/W, RθJL = 20 °C/W) supports reliable operation up to TJ = +150 °C, and it meets JESD201 Class 2 whisker resistance requirements.
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a temperature coefficient of VBR of +0.106 %/°C - enabling predictable voltage drift across automotive and industrial ambient ranges. Its 1.0 μA max reverse leakage at VWM ensures minimal standby power loss in high-impedance protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1.0 mA - defines precise avalanche initiation window for repeatable clamping threshold |
| VWM | 77.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | ≤125 V at IPPM = 4.8 A (10/1000 μs) - clamping voltage limiting stress on downstream ICs during transients |
| PPPM | 600 W - peak transient energy absorption capability under standardized surge waveform |
| IFSM | 100 A (8.3 ms half-sine) - surge current handling for inductive switch-off events without failure |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal design |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or low-side return path; conducts during forward surge events |
| Cathode | Avalanche clamping terminal (marked with band) | Connected to protected line (e.g., VIN, signal); initiates clamping when reverse voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on DC rails |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics per stress test requirements including HTOL and TC |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration standards for green manufacturing |
| MSL Level 1 (260 °C peak) | Supports standard SMT reflow profiles without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
Applications
| Automotive Power Supply Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 24 V CAN bus power rails and sensor supply lines from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and ground to shunt >80 V spikes within nanoseconds. Use Value: Prevents latch-up or permanent damage to automotive-grade MCUs and transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding analog input channels (e.g., 4–20 mA loops) in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-mode protector mounted at connector entry point to clamp induced lightning-induced transients. Use Value: Maintains signal integrity below 125 V clamping level while drawing <1.0 μA leakage at 24 V nominal operation. |
| DC-DC Converter Output Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing regulated 12 V outputs of isolated flyback converters in telecom power systems against cross-talk and coupling surges. IC Role / Device Role / Timing Role: Secondary-side TVS suppressing fast-rising transients (<1 ns rise time) from switching noise or ESD coupling. Use Value: Limits output overshoot to ≤125 V during 600 W surge events, preserving downstream LDOs and PMICs. |
Use Scenario: Shielding high-side and low-side gate drivers in 3-phase inverter modules from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Localized clamping device across gate-source terminals to suppress dv/dt-induced false turn-on. Use Value: Fast response (<1 ps) and low clamping voltage prevent unintended IGBT/MOSFET conduction during high-speed switching. |
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 SMB package, VBR = 90–100 V, VC = 129 V @ 4.7 A, non-AEC-Q101, RoHS-compliant only | Lacks automotive qualification and halogen-free certification; suitable for commercial-grade industrial use | Select when AEC-Q101 and halogen-free requirements are not mandated; lower cost alternative with identical footprint |
| 1.5SMC91A | Higher power (1500 W), larger SMC (DO-214AB) package, VBR = 86.5–95.5 V, VC = 125 V @ 12 A | Requires PCB layout change due to larger body and pad dimensions; suited for higher-energy surge environments | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and thermal margin demands greater power dissipation |
Compared with SMAJ90A-E3/5B, P6SMB91AHM3/I provides AEC-Q101 validation and halogen-free compliance for automotive deployment; versus 1.5SMC91A, it offers space-constrained SMB compatibility at 600 W - critical for dense motor control and ADAS module layouts.
Availability
P6SMB91AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O modules, and DC-DC converter output protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P6SMB91AHM3/I 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 automotive-grade qualification.
The P6SMB series was engineered for high-reliability transient suppression in space-constrained surface-mount applications - targeting automotive, industrial, and telecom systems where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance of the P6SMB91AHM3/I?
The P6SMB91AHM3/I has a specified breakdown voltage range of 86.5 V to 95.5 V at a test current of 1.0 mA, corresponding to a ±5 % tolerance around the nominal 91 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, directly supporting compliance with ISO 16750-2 for automotive electrical loads.
Is the P6SMB91AHM3/I suitable for bidirectional transient protection?
No, the P6SMB91AHM3/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P6SMB91CA variant. Using P6SMB91AHM3/I in AC-coupled or symmetrical surge scenarios would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
Does the P6SMB91AHM3/I require derating at elevated ambient temperatures?
Yes, the P6SMB91AHM3/I must be derated above TA = 25 °C per Figure 2 in the datasheet: peak pulse power decreases linearly to ~50 % at TA = 100 °C. Designers must apply thermal modeling using RθJA = 100 °C/W and ensure copper pad area (minimum 0.2" × 0.2") to maintain safe junction temperature under repeated surge duty cycles.
What does the "HM3/I" suffix signify in P6SMB91AHM3/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "I" indicates packaging in 13-inch diameter tape-and-reel format with 3200 units per reel. This full suffix confirms compliance with automotive environmental standards and supports automated SMT assembly without moisture sensitivity concerns (MSL Level 1).
How does the clamping voltage of P6SMB91AHM3/I compare to its stand-off voltage?
The P6SMB91AHM3/I has a stand-off voltage (VWM) of 77.8 V and a maximum clamping voltage (VC) of 125 V at 4.8 A - yielding a clamping ratio of ~1.61. This margin ensures protected circuits remain below absolute maximum ratings during surge events while maintaining low leakage (<1.0 μA) during normal operation at rated VWM.
P6SMB91AHM3/I 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:
- 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)
P6SMB91AHM3/I FAQ
1.How can I place an order for P6SMB91AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHM3/I 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 P6SMB91AHM3/I reliable?
The price and inventory of P6SMB91AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB91AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB91AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHM3/I?
P6SMB91AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHM3/I 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 P6SMB91AHM3/I?
For technical support, including P6SMB91AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHM3/I requirements.
6.How does Aetrix verify that P6SMB91AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHM3/I 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 P6SMB91AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB91AHM3/I?
All P6SMB91AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHM3/I, 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 P6SMB91AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB91AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHM3/I 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 …
