My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB6.8AHE3_B/H
- Part No.:
- P6SMB6.8AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHE3_B/H.pdf
- Description:
- 600W,6.8V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,754
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB6.8AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at IT = 10 mA), 5.8 V stand-off voltage (VWM), clamps transients to ≤10.5 V at 57.1 A peak pulse current (IPPM), and delivers 600 W peak pulse power (10/1000 µs waveform). It is widely deployed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P6SMB6.8AHE3_B/H datasheet, P6SMB6.8AHE3_B/H pinout, P6SMB6.8AHE3_B/H application, or P6SMB6.8AHE3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and verified clamping performance under repetitive surge conditions per JESD22-A114.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (5.8 V), it transitions rapidly from high-impedance to low-impedance state, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repeated transient stress.
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports continuous power dissipation of 5.0 W at TA = 50 °C, and maintains operation across -65 °C to +150 °C junction temperature range. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 µA |
| VC @ IPPM | ≤10.5 V at 57.1 A - clamping voltage during 600 W transient, limiting stress on protected ICs |
| IPPM | 57.1 A - peak surge current capability with 10/1000 µs waveform, derated above 25 °C |
| Power rating | 600 W peak pulse (10/1000 µs), 5.0 W steady-state - determines survivability against lightning/inductive spikes and thermal management needs |
| Junction temp. | -65 °C to +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode identified by a single band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential rail; defines polarity for unidirectional clamping |
| Cathode | Reverse voltage input / Surge current sink | Connected to line being protected (e.g., 5 V rail, sensor output); carries full transient current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients from inductive load switching without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage overshoot during clamping, enhancing protection margin for 5 V logic |
| MSL Level 1, 260 °C reflow compatible | Enables standard SMT assembly without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1000 µA at VWM) over lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 5 V supply rails in engine control modules (ECMs) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, triggered by >5.8 V transients. Use Value: Clamps surges to ≤10.5 V, preserving integrity of microcontrollers and CAN transceivers operating at 5 V. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to suppress EFT and ESD events. Use Value: Sub-11 V clamping prevents latch-up or damage to precision op-amps and ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters after synchronous rectification. IC Role / Device Role / Timing Role: Fast-response TVS absorbing flyback spikes from transformer leakage inductance. Use Value: 600 W rating handles repetitive 10/1000 µs surges without thermal runaway under continuous duty. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras) from induced surges on 48 V DC feeding lines. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to return path, sized for IEEE 802.3bt surge compliance. Use Value: AEC-Q101 qualification ensures reliability in outdoor telecom enclosures with wide ambient temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/52 | Same VBR range (6.45–7.14 V), but SMA package (DO-214AC); 400 W peak power rating | Lower power handling; suitable for space-constrained consumer boards where 600 W is not required | Select when board layout uses SMA footprint and surge energy is limited to <400 W |
| 1.5SMC6.8A | Same electrical specs, but larger SMC (DO-214AB) package; 1500 W peak power rating | Higher surge margin; requires more PCB area and higher thermal mass for heat dissipation | Choose for industrial motor drives where higher IPPM (≥100 A) and longer surge duration must be accommodated |
Compared with SMAJ6.8A-E3/52, P6SMB6.8AHE3_B/H offers 50 % higher peak power in the same height but wider SMB body; versus 1.5SMC6.8A, it provides identical clamping with 60 % smaller footprint and lower thermal resistance to PCB, optimizing for automotive ECU density and reflow yield.
Availability
P6SMB6.8AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom power interfaces requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for P6SMB6.8AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P6SMB Series targets cost-sensitive, high-volume transient protection applications where AEC-Q101 qualification, consistent clamping, and automated assembly compatibility are mandatory design requirements.
FAQ
What is the clamping voltage of the P6SMB6.8AHE3_B/H under maximum rated surge current?
The P6SMB6.8AHE3_B/H clamps to a maximum of 10.5 V when subjected to its rated peak pulse current of 57.1 A (10/1000 µs waveform). This value is guaranteed per the Vishay datasheet (Document Number 88370, Rev. 09-Jan-2024) and reflects worst-case VC across temperature and production lot variation. The P6SMB6.8AHE3_B/H achieves this with low incremental surge resistance, ensuring predictable protection for 5 V logic circuits.
Is the P6SMB6.8AHE3_B/H suitable for automotive applications?
Yes, the P6SMB6.8AHE3_B/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and explicit listing in the "AEC-Q101 qualified available" section of the Vishay P6SMB datasheet. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC standards. The P6SMB6.8AHE3_B/H is routinely used in engine control units, body electronics, and ADAS sensor modules where automotive-grade reliability is mandatory.
What does the "_B/H" suffix in P6SMB6.8AHE3_B/H indicate?
The "_B" denotes AEC-Q101 qualification for the P6SMB6.8AHE3_B/H series (applicable to P6SMB6.8A through P6SMB220A), while "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This ordering code aligns with Vishay's documented format in the "Ordering Information" table (page 3 of Document 88370), confirming commercial-grade RoHS compliance and automotive qualification in a standard SMT-ready format.
How does the P6SMB6.8AHE3_B/H compare to bidirectional variants like P6SMB6.8CA?
The P6SMB6.8AHE3_B/H is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, P6SMB6.8CA is bidirectional, symmetrical in both directions, and used in AC-coupled or floating signal paths. The P6SMB6.8AHE3_B/H exhibits lower leakage (<1000 µA at 5.8 V) and higher IFSM (100 A) than its bidirectional counterpart, making it preferred for power rail applications requiring forward surge robustness.
What is the thermal resistance of the P6SMB6.8AHE3_B/H, and how does it affect PCB layout?
The P6SMB6.8AHE3_B/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, as specified in the Vishay datasheet. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces RθJA. For reliable 5.0 W continuous dissipation, the P6SMB6.8AHE3_B/H requires adequate copper pour and should avoid placement near heat sources to maintain TJ ≤ 150 °C.
P6SMB6.8AHE3_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):
- 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)
P6SMB6.8AHE3_B/H FAQ
1.How can I place an order for P6SMB6.8AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHE3_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 P6SMB6.8AHE3_B/H reliable?
The price and inventory of P6SMB6.8AHE3_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 P6SMB6.8AHE3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHE3_B/H?
P6SMB6.8AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHE3_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 P6SMB6.8AHE3_B/H?
For technical support, including P6SMB6.8AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHE3_B/H requirements.
6.How does Aetrix verify that P6SMB6.8AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHE3_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 P6SMB6.8AHE3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHE3_B/H?
All P6SMB6.8AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHE3_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 P6SMB6.8AHE3_B/H part is unused and in its original packaging.
Return procedure for P6SMB6.8AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHE3_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
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 …
