My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB91AHM3_B/H
- Part No.:
- P6SMB91AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB91AHM3_B/H.pdf
- Description:
- 600W,91V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB91AHM3_B/H 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 waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial power supplies and automotive control modules.
For engineers reviewing the P6SMB91AHM3_B/H datasheet, P6SMB91AHM3_B/H pinout, P6SMB91AHM3_B/H application, or P6SMB91AHM3_B/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3_B suffix), unidirectional polarity with cathode band marking, 77.8 V stand-off voltage (VWM), <1.0 μA reverse leakage at VWM, and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 77.8 V and rapidly avalanches above VBR to limit transient voltages to ≤125 V at 4.8 A. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 μs pulses at 0.01% duty cycle.
Designed for automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal, it delivers fast response time (<1 ns), meets UL 94 V-0 flammability, and supports operation from −65 °C to +150 °C junction temperature. The HM3_B/H ordering code confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 86.5–95.5 V at 1.0 mA test current - defines precise avalanche onset threshold for reliable overvoltage triggering |
| Stand-off Voltage VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| Clamping Voltage VC | 125 V at 4.8 A peak pulse - limits transient voltage seen by protected downstream circuitry |
| Peak Pulse Power PPPM | 600 W (10/1000 μs waveform) - sustains high-energy surges without failure under defined test conditions |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.20 mm max height and 5.59 mm body length |
| Temperature Range | −65 °C to +150 °C operating junction - enables use in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes (HM3_B suffix) - validated for automotive electronics per stress test requirements including HTOL, TC, and UHAST |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode indicated by a band on the case end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; carries surge current during clamping |
| Cathode | High-side connection point | Marked with band; connected to protected line (e.g., 12 V rail or sensor input); defines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation in automotive ECUs |
| AEC-Q101 qualification (HM3_B) | Validated reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 μA), and long-term parametric stability |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking - simplifies manufacturing flow |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for global OEM supply chains and industrial equipment |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller inputs and CAN transceiver power pins from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VCC and GND, triggered within nanoseconds of overvoltage event. Use Value: Limits voltage to ≤125 V during 600 W surges, preventing latch-up or permanent damage to 3.3 V/5 V logic devices. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring inductance. IC Role / Device Role / Timing Role: Standoff-mode protector on 4–20 mA loop or 0–10 V output line, conducting only during fault events. Use Value: Maintains <1.0 μA leakage at 77.8 V, preserving signal accuracy while clamping ESD and switching spikes to safe levels. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
|
Use Scenario: Input-side transient suppression for buck converters in telecom power systems subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input capacitor and controller IC. Use Value: Withstands 10/1000 μs pulses up to 4.8 A without derating, enabling compact layout with minimal thermal margin. |
Use Scenario: Protecting high-side and low-side gate drivers in BLDC motor inverters from shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Localized clamping element across driver supply rails (e.g., VDD–GND). Use Value: Fast response (<1 ns) and low clamping ratio (VC/VBR ≈ 1.31) prevent false triggering and ensure gate oxide integrity. |
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, 90 V VBR (85.5–94.5 V), 129 V VC at 4.7 A; commercial-grade (not AEC-Q101) | Lacks automotive qualification; suitable for industrial/commercial power supplies but not safety-critical vehicle systems | Select when AEC-Q101 is not required and tighter VBR tolerance (±5%) is acceptable |
| 1.5SMC91A | Higher-power SMC package (7.11 mm × 6.22 mm), same 91 V VBR, 125 V VC, but 1500 W PPPM rating | Requires larger PCB footprint and higher thermal mass; used where higher surge immunity is mandated (e.g., DIN rail power) | Choose when system-level surge testing exceeds 600 W or board space allows larger package |
Compared with SMAJ90A-E3/5B, P6SMB91AHM3_B/H provides AEC-Q101 assurance for automotive use; compared with 1.5SMC91A, it offers identical clamping performance in a 40% smaller SMB footprint-critical for space-constrained ECU designs.
Availability
P6SMB91AHM3_B/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, DC-DC converter inputs, and motor drive gate driver protection requiring stable component supply and AEC-Q101 traceability.
Supply support for P6SMB91AHM3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series was developed for robust, surface-mount transient suppression in harsh environments-including automotive, industrial, and telecom-balancing high pulse power, tight parameter control, and manufacturability.
FAQ
What is the breakdown voltage range for P6SMB91AHM3_B/H?
The P6SMB91AHM3_B/H has a specified breakdown voltage (VBR) range of 86.5 V to 95.5 V at a test current of 1.0 mA. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 09-Jan-2024. P6SMB91AHM3_B/H maintains this specification under standard test conditions (TA = 25 °C).
Is P6SMB91AHM3_B/H suitable for automotive applications?
Yes, P6SMB91AHM3_B/H is AEC-Q101 qualified, as indicated by the "HM3_B" suffix in its ordering code. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST), making it appropriate for under-hood and chassis-mounted automotive electronics. P6SMB91AHM3_B/H is explicitly listed in Vishay's AEC-Q101 qualified product matrix for the P6SMB family.
What is the maximum clamping voltage of P6SMB91AHM3_B/H and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB91AHM3_B/H is 125 V, measured at a peak pulse current (IPPM) of 4.8 A using the standardized 10/1000 μs double-exponential waveform. This value represents the upper limit of voltage imposed on protected circuitry during transient events and is critical for ensuring downstream ICs remain within absolute maximum ratings. P6SMB91AHM3_B/H achieves this clamping performance while maintaining low incremental resistance.
Does P6SMB91AHM3_B/H have a bidirectional variant?
No, P6SMB91AHM3_B/H is a unidirectional TVS diode, as confirmed by its part number suffix "A" (denoting unidirectional) and the presence of a cathode band marking. Bidirectional variants in the same series use the "CA" suffix (e.g., P6SMB91CA). P6SMB91AHM3_B/H must be oriented correctly on PCBs-with the banded end connected to the protected line-to function as intended.
What packaging and moisture sensitivity level does P6SMB91AHM3_B/H have?
P6SMB91AHM3_B/H is supplied in 7-inch plastic tape and reel (H carrier code), with 750 units per reel. It meets MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can withstand peak reflow temperatures up to 260 °C without preconditioning. The SMB (DO-214AA) package uses matte tin-plated leads compliant with J-STD-002 and JESD22-B102. P6SMB91AHM3_B/H also passes JESD201 Class 2 whisker testing.
P6SMB91AHM3_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)
P6SMB91AHM3_B/H FAQ
1.How can I place an order for P6SMB91AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB91AHM3_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 P6SMB91AHM3_B/H reliable?
The price and inventory of P6SMB91AHM3_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 P6SMB91AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB91AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB91AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB91AHM3_B/H?
P6SMB91AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB91AHM3_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 P6SMB91AHM3_B/H?
For technical support, including P6SMB91AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB91AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB91AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB91AHM3_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 P6SMB91AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB91AHM3_B/H?
All P6SMB91AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB91AHM3_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 P6SMB91AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB91AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB91AHM3_B/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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
