My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J6.5CAHM3/H
- Part No.:
- SMB8J6.5CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CAHM3/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,957
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J6.5CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V clamping voltage (VC) at 1000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMB8J6.5CAHM3/H datasheet, SMB8J6.5CAHM3/H pinout, SMB8J6.5CAHM3/H application, or SMB8J6.5CAHM3/H equivalent, key selection criteria include AEC-Q101 qualification, halogen-free RoHS compliance (HM3 suffix), bidirectional polarity, low clamping ratio (VC/VBR ≈ 1.42), and suitability for automotive sensor line and CAN bus interface protection where fast response (<1 ns), low incremental surge resistance, and MSL Level 1 reflow compatibility are required.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response and stable clamping under repetitive surges. Its bidirectional architecture enables symmetric suppression of positive and negative polarity transients without external polarity management.
Thermal performance is defined by RθJA = 72 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The 0.2" × 0.2" copper pad layout per terminal ensures rated 800 W pulse power dissipation and meets J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe signal line bias margin. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - Tight breakdown tolerance ensures consistent turn-on across production lots. |
| VC @ IPPM | 11.2 V at IPPM = 1000 A - Clamping voltage limits downstream IC stress during 800 W transient events. |
| PPPM | 800 W (10/1000 µs) - Sustains high-energy lightning-induced surges common in automotive and industrial interfaces. |
| TJ max | +150 °C - Enables under-hood deployment in AEC-Q101-qualified automotive systems. |
| Package | SMB (DO-214AA) - Surface-mount footprint (4.57 mm × 3.94 mm) compatible with automated placement and IPC-7351B land patterns. |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant (HM3 suffix) - Meets automotive reliability and environmental requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical dual-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identically in bidirectional mode; no cathode band - enables orientation-agnostic PCB layout. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; thermal path to PCB copper pads dominates heat dissipation (RθJA = 72 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN FD) without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensors, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on protected ICs compared to alternatives with higher ratios (>1.5). |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning - eliminates moisture sensitivity handling overhead. |
| Glass-passivated junction | Ensures stable leakage (<1 μA at VWM) and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Sensor Interface Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt transients before reaching precision ADC front-end. Use Value: 11.2 V clamping ensures downstream op-amps and microcontrollers remain within absolute maximum ratings during 1000 A surge events. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD (IEC 61000-4-2) and burst noise (IEC 61000-4-4) in vehicle networking nodes. IC Role / Device Role / Timing Role: Bidirectional transient suppressor mounted adjacent to CAN transceiver I/O pins to clamp both polarities without signal inversion. Use Value: Symmetric 7.22–7.98 V breakdown and 11.2 V clamping preserve CAN signal integrity while meeting ISO 11898-2 EMC immunity requirements. |
| Industrial PLC Digital I/O Protection | Consumer Appliance Motor Drive Feedback Lines |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers from inductive kickback when solenoids or relays de-energize. IC Role / Device Role / Timing Role: Fast-response TVS placed between field wiring and optocoupler input to limit voltage overshoot below 12 V. Use Value: 800 W peak power rating handles repetitive 10/1000 µs surges typical of factory floor switching noise without degradation. |
Use Scenario: Securing hall-effect sensor feedback lines in BLDC motor drives inside washing machines and HVAC systems subject to brush-commutator noise. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor installed at motor controller board edge to prevent false triggering of rotor position detection. Use Value: Halogen-free HM3 construction supports global appliance safety certifications (UL/EN 60335), while 150 °C junction rating withstands enclosed thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CAHE3/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable for commercial automotive modules where halogen-free is not mandated by OEM spec. | Select SMB8J6.5CAHE3/H for cost-sensitive non-OEM designs requiring AEC-Q101 but no halogen restriction. |
| SMAJ6.5CA-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (11.5 V), same VWM/VBR range. | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a simulation. | Choose SMAJ6.5CA-M3 only for space-constrained consumer electronics with <400 W surge requirements. |
Compared with SMB8J6.5CAHE3/H, the SMB8J6.5CAHM3/H adds halogen-free compliance for stricter OEM supply chains; versus SMAJ6.5CA-M3, it delivers double the surge power handling and superior thermal robustness via larger SMB package and lower RθJA.
Availability
SMB8J6.5CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and consumer appliance motor control systems requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB8J6.5CAHM3/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 SMB8J6.5CAHM3/H belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes, engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 validation and thermal stability are mandatory.
FAQ
What is the peak pulse power rating of SMB8J6.5CAHM3/H and under what test condition?
The SMB8J6.5CAHM3/H has a peak pulse power rating (PPPM) of 800 W, measured using the standardized 10/1000 µs double-exponential current waveform per ANSI/IEEE C62.35. This rating applies to bidirectional operation at TA = 25 °C with recommended 0.2" × 0.2" copper pads per terminal, and derates linearly above 25 °C per Figure 2 in the datasheet.
Is SMB8J6.5CAHM3/H suitable for automotive applications, and what qualifications does it hold?
Yes, SMB8J6.5CAHM3/H is explicitly AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction. It meets automotive-grade reliability requirements for temperature cycling, humidity resistance, and surge endurance, making it suitable for engine control units, ADAS camera modules, and body electronics where certified transient protection is mandatory.
How does the clamping voltage of SMB8J6.5CAHM3/H compare to its breakdown voltage, and why does that matter?
The SMB8J6.5CAHM3/H exhibits a clamping voltage (VC) of 11.2 V at 1000 A IPPM, while its minimum breakdown voltage (VBR) is 7.22 V - yielding a clamping ratio of ~1.42. This low ratio ensures minimal overvoltage stress on protected ICs during surge events, directly improving system-level robustness compared to devices with ratios >1.5 that allow higher transient voltages to reach downstream circuitry.
What is the meaning of the "HM3" and "/H" suffixes in SMB8J6.5CAHM3/H?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standard, while "/H" specifies the preferred packaging code: 7" diameter plastic tape and reel with 750 units per reel. Together, SMB8J6.5CAHM3/H identifies the AEC-Q101-qualified, halogen-free, surface-mount TVS in standard SMB package supplied in 7" reels.
Can SMB8J6.5CAHM3/H be used in bidirectional signal lines such as RS-485 or USB data lines?
Yes, SMB8J6.5CAHM3/H is inherently bidirectional and well-suited for protecting balanced differential interfaces like RS-485, CAN, and LVDS. Its symmetrical clamping behavior and absence of polarity marking simplify layout - however, for high-speed data lines (e.g., USB 2.0), verify that its junction capacitance (not specified in this datasheet but typically <100 pF for SMB8J series) does not degrade signal integrity at target data rates.
SMB8J6.5CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 71.4A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J6.5CAHM3/H FAQ
1.How can I place an order for SMB8J6.5CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CAHM3/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 SMB8J6.5CAHM3/H reliable?
The price and inventory of SMB8J6.5CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CAHM3/H?
SMB8J6.5CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CAHM3/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 SMB8J6.5CAHM3/H?
For technical support, including SMB8J6.5CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CAHM3/H requirements.
6.How does Aetrix verify that SMB8J6.5CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CAHM3/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 SMB8J6.5CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CAHM3/H?
All SMB8J6.5CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CAHM3/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 SMB8J6.5CAHM3/H part is unused and in its original packaging.
Return procedure for SMB8J6.5CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CAHM3/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 …
