My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB6.8AHM3_B/I
- Part No.:
- P6SMB6.8AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHM3_B/I.pdf
- Description:
- 600W,6.8V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,796
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB6.8AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 6.45 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V maximum clamping voltage (VC) at 57.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the P6SMB6.8AHM3_B/I datasheet, P6SMB6.8AHM3_B/I pinout, P6SMB6.8AHM3_B/I application, or P6SMB6.8AHM3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 5.8 V (VWM) and rapidly avalanches above 6.45 V (VBR) to limit transient overvoltage. Its glass-passivated junction ensures stable leakage (<1000 μA at VWM) and fast response time (<1 ns), enabling protection against ESD, inductive switching spikes, and lightning-induced surges.
The device is rated for 600 W peak pulse power (10/1000 μs), 100 A non-repetitive forward surge current (8.3 ms half-sine), and thermal resistance of 100 °C/W (junction-to-ambient). It meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 5.8 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin for normal circuit operation. |
| VBR (Breakdown, min) | 6.45 V at 10 mA - Minimum voltage at which avalanche conduction initiates; ensures reliable triggering during transients. |
| VC (Clamping, max) | 10.5 V at 57.1 A - Maximum voltage seen across device during 600 W transient; determines protected circuit's worst-case overvoltage exposure. |
| IPPM | 57.1 A - Peak pulse current supported under 10/1000 μs waveform; directly enables 600 W surge handling capability. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.205" footprint; compatible with JEDEC-standard reflow and pick-and-place equipment. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential side (e.g., ground or return path); defines directionality for unidirectional clamping. |
| Cathode | Forward current exit / Transient clamp node | Connected to protected line (e.g., 5 V rail or signal input); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surge events without derating in standard PCB layouts. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring long-term reliability under thermal and mechanical stress. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and eliminates corrosive halogen emissions during board assembly or end-of-life processing. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for sensitive downstream ICs. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture-related popcorn failure or delamination. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller supply rails in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND to shunt transients exceeding 5.8 V. Use Value: Limits voltage to ≤10.5 V during 600 W surges, preventing latch-up or permanent damage to MCU and CAN transceivers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line to ground, activated only during >6.45 V transients. Use Value: Clamps sub-100 ns ESD pulses to <10.5 V while maintaining <1 μA leakage at 5 V, preserving signal integrity and accuracy. |
| Consumer USB Power Port Protection | Telecom DC Feeder Line Protection |
Use Scenario: Secondary overvoltage protection on 5 V USB Type-A port inputs in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Unidirectional TVS placed after primary fuse and upstream of USB controller IC. Use Value: Responds in <1 ns to fast transients from hot-plug or nearby switching noise, limiting VOUT to safe levels without affecting steady-state USB regulation. |
Use Scenario: Surge suppression on -48 V DC feeder lines feeding remote radio units in 4G/5G base stations. IC Role / Device Role / Timing Role: Cathode tied to -48 V rail, anode to system ground; clamps positive-going transients toward ground. Use Value: Handles repetitive 10/1000 μs surges up to 600 W while maintaining 5.8 V standoff - critical for uninterrupted telecom uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8AHE3/A | Same VWM/VBR/VC, but SMA package (smaller footprint, higher RθJA = 140 °C/W); not AEC-Q101 qualified. | Limited to commercial-grade consumer/industrial use; unsuitable for automotive under-hood deployment. | Select when board space is constrained and automotive qualification is unnecessary. |
| 1.5SMC6.8A | Same electrical specs, but larger SMC (DO-214AB) package; higher thermal mass but 0.275" × 0.265" footprint. | Better thermal performance (RθJA ≈ 70 °C/W), yet incompatible with dense SMT layouts optimized for SMB. | Choose for high-reliability industrial power supplies where layout density is secondary to thermal margin. |
Compared with SMAJ6.8AHE3/A and 1.5SMC6.8A, P6SMB6.8AHM3_B/I uniquely combines AEC-Q101 qualification, halogen-free compliance, and SMB footprint - making it the preferred choice for automotive and space-constrained industrial designs requiring certified reliability.
Availability
P6SMB6.8AHM3_B/I is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, and telecom DC feeder line surge suppression requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P6SMB6.8AHM3_B/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, efficiency, and application-specific optimization.
The P6SMB Series was developed for high-power transient suppression in automotive, industrial, and telecom systems - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 and halogen-free options.
FAQ
What is the clamping voltage of P6SMB6.8AHM3_B/I at its rated peak pulse current?
The P6SMB6.8AHM3_B/I has a maximum clamping voltage (VC) of 10.5 V at 57.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB6.8AHM3_B/I maintains this clamping performance across its specified operating temperature range.
Is P6SMB6.8AHM3_B/I qualified for automotive applications?
Yes, P6SMB6.8AHM3_B/I is AEC-Q101 qualified, as confirmed by the "HM3" and "_B" suffixes in its ordering code - indicating halogen-free, RoHS-compliant construction and full automotive reliability validation. It is approved for use in engine control modules, body electronics, and ADAS subsystems where transient immunity and long-term stability are critical. The P6SMB6.8AHM3_B/I meets all required stress tests including temperature cycling, HAST, and mechanical shock.
What does the "_B/I" suffix mean in P6SMB6.8AHM3_B/I?
The "_B" suffix denotes AEC-Q101 qualification for the P6SMB6.8AHM3_B/I series, while "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format supports high-volume SMT assembly and ensures consistent delivery for production programs. The "HM3" portion confirms halogen-free and RoHS-compliant materials. All elements of P6SMB6.8AHM3_B/I's suffix are defined in Vishay's official ordering information table (page 3, doc #88370).
Can P6SMB6.8AHM3_B/I be used in bidirectional configurations?
No, P6SMB6.8AHM3_B/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") in its base part number and confirmed by its polarity marking (cathode band). Bidirectional variants use the "CA" suffix (e.g., P6SMB6.8CA). Using P6SMB6.8AHM3_B/I in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to suppress. Always verify polarity alignment before placing P6SMB6.8AHM3_B/I in circuit.
What is the maximum junction temperature rating for P6SMB6.8AHM3_B/I?
The P6SMB6.8AHM3_B/I has a maximum junction temperature (TJ) rating of +150 °C, as specified in the "Maximum Ratings" table of Vishay document 88370. This allows reliable operation in under-hood automotive environments and high-ambient industrial settings. Derating curves (Figure 2) show that peak pulse power must be reduced above 25 °C ambient, and the P6SMB6.8AHM3_B/I's thermal resistance (RθJA = 100 °C/W) supports this rating when mounted on 0.2" × 0.2" copper pads.
P6SMB6.8AHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- 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)
P6SMB6.8AHM3_B/I FAQ
1.How can I place an order for P6SMB6.8AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHM3_B/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 P6SMB6.8AHM3_B/I reliable?
The price and inventory of P6SMB6.8AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHM3_B/I?
P6SMB6.8AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHM3_B/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 P6SMB6.8AHM3_B/I?
For technical support, including P6SMB6.8AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB6.8AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHM3_B/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 P6SMB6.8AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHM3_B/I?
All P6SMB6.8AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHM3_B/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 P6SMB6.8AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB6.8AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHM3_B/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 …
