My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB6.8CAHM3/I
- Part No.:
- P6SMB6.8CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8CAHM3/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,320
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB6.8CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 6.8 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 µs), and clamps to ≤10.5 V at 57.1 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB6.8CAHM3/I datasheet, P6SMB6.8CAHM3/I pinout, P6SMB6.8CAHM3/I application, or P6SMB6.8CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and lightning-induced surges before downstream IC damage occurs.
Rated for 150 °C maximum junction temperature and MSL Level 1 (260 °C reflow peak), the P6SMB6.8CAHM3/I supports automated SMT assembly without derating concerns. Its halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification for automotive-grade reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events. |
| Stand-off Voltage VWM | 5.80 V - maximum continuous reverse working voltage before leakage exceeds 1000 µA; ensures no conduction during normal operation. |
| Clamping Voltage VC | ≤10.5 V at 57.1 A IPPM - actual voltage seen by protected circuit during worst-case 600 W transient, enabling safe margin for 5 V logic rails. |
| Peak Pulse Power PPPM | 600 W (10/1000 µs waveform) - sustains high-energy transients common in automotive load-dump or industrial switching noise. |
| Junction Temperature Range | −65 °C to +150 °C - supports deployment in under-hood automotive, outdoor telecom, and factory-floor industrial environments. |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and surge endurance. |
| Package | SMB (DO-214AA) - standardized 2-pin surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal footprint for reliable PCB heat dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as input/output for clamping; no DC polarity dependency - simplifies layout routing on differential or AC-coupled lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating in standard PCB layouts. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and low leakage (<1000 µA at VWM) across temperature and lifetime. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow without moisture-related popcorning or delamination risks. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before signal conditioning amplifiers. Use Value: Clamps 600 W surges to ≤10.5 V while maintaining <1000 µA leakage at 5.8 V - preserves signal integrity and avoids false triggering of 5 V microcontrollers. |
Use Scenario: Shielding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, operating in parallel with precision input resistors and op-amp buffers. Use Value: Withstands repeated 10/1000 µs transients up to 57.1 A without parameter shift - ensures long-term calibration stability in harsh factory environments. |
| Telecom Line Protection | Consumer USB Port ESD Guard |
Use Scenario: Safeguarding Ethernet PHYs, DSL line drivers, and PoE injectors from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: First-line TVS in series with common-mode chokes and gas discharge tubes for multi-stage telecom surge protection. Use Value: Fast <1 ns response and low clamping voltage minimize energy delivered to secondary protection stages - extends system-level surge rating to IEC 61000-4-5 6 kV. |
Use Scenario: ESD protection for USB 2.0 data lines (D+/D−) and VBUS in smart home hubs, set-top boxes, and portable peripherals. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to suppress contact discharge per IEC 61000-4-2 ±15 kV. Use Value: Maintains signal integrity with <10 pF junction capacitance (typ.) at zero bias - avoids USB 2.0 eye diagram degradation or timing jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same VBR range (6.45–7.14 V) and bidirectional configuration, but lower 400 W PPPM rating and SMA package (higher RθJA = 140 °C/W). | Not AEC-Q101 qualified; suitable only for commercial-grade consumer or office equipment. | Select when cost sensitivity outweighs automotive qualification or higher surge margin. |
| 1.5SMC6.8CA | Higher 1500 W PPPM rating and larger SMC package, but same VBR/VC specs and AEC-Q101 availability (HE3/HM3 variants). | Requires larger PCB area and different thermal pad layout; better suited for primary surge arrest in power supply inputs. | Choose when system-level surge threat exceeds 600 W - e.g., 24 V industrial power rail protection. |
Compared with SMAJ6.8CA and 1.5SMC6.8CA, the P6SMB6.8CAHM3/I delivers optimal balance of AEC-Q101 compliance, 600 W surge handling, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial edge nodes where qualification and reliability are non-negotiable.
Availability
P6SMB6.8CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line interface designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB6.8CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress, extended temperature operation, and automated manufacturing compatibility.
FAQ
What is the exact breakdown voltage range for P6SMB6.8CAHM3/I?
The P6SMB6.8CAHM3/I has a guaranteed breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting 5 V logic interfaces without false triggering.
Is P6SMB6.8CAHM3/I suitable for automotive applications?
Yes - the HM3 suffix explicitly denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. The P6SMB6.8CAHM3/I has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and surge endurance per AEC-Q101 Rev G, making it approved for under-hood and chassis-mounted automotive electronics.
What is the clamping voltage of P6SMB6.8CAHM3/I at its rated peak pulse current?
At its rated peak pulse current of 57.1 A (10/1000 µs waveform), the P6SMB6.8CAHM3/I clamps to a maximum of 10.5 V. This value is specified in the Vishay datasheet (Document Number 88370, page 2) and defines the upper voltage limit imposed on protected circuits during worst-case transient events.
Does P6SMB6.8CAHM3/I have polarity markings on the package?
No - as a bidirectional TVS, the P6SMB6.8CAHM3/I has no cathode band or polarity marking on the SMB (DO-214AA) case. Both terminals are functionally identical, allowing flexible placement on PCBs with symmetric routing for differential signals or AC-coupled lines without orientation constraints.
What is the thermal resistance junction-to-ambient for P6SMB6.8CAHM3/I?
The typical thermal resistance junction-to-ambient (RθJA) for P6SMB6.8CAHM3/I is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and informs thermal design for sustained power dissipation in high-temperature environments.
P6SMB6.8CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB6.8CAHM3/I FAQ
1.How can I place an order for P6SMB6.8CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/I reliable?
The price and inventory of P6SMB6.8CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB6.8CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8CAHM3/I?
P6SMB6.8CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/I?
For technical support, including P6SMB6.8CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8CAHM3/I requirements.
6.How does Aetrix verify that P6SMB6.8CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB6.8CAHM3/I?
All P6SMB6.8CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8CAHM3/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 P6SMB6.8CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB6.8CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8CAHM3/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 …
