My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J6.5CAHE3_A/I
- Part No.:
- SMB8J6.5CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J6.5CAHE3_A/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,316
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J6.5CAHE3_A/I 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 SMB8J6.5CAHE3_A/I datasheet, SMB8J6.5CAHE3_A/I pinout, SMB8J6.5CAHE3_A/I application, or SMB8J6.5CAHE3_A/I equivalent, key selection criteria include AEC-Q101 qualification, bidirectional polarity, low clamping ratio (VC/VBR ≈ 1.43), MSL Level 1 moisture sensitivity, and compatibility with automotive sensor line and CAN bus interface protection layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1 µA at VWM), while the bidirectional configuration enables symmetrical clamping across both polarities without external polarity management.
The device is rated for TJ = –55 °C to +150 °C operation, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W. It meets ANSI/IEEE C62.35 surge standards and is qualified per AEC-Q101 for automotive under-hood and infotainment applications requiring robust transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin below system supply rails. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - tight 10.5% tolerance ensures predictable turn-on threshold across temperature and lot variation. |
| VC @ IPPM | 11.2 V at 1000 A - clamping voltage during worst-case 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 800 W - peak pulse power handling capability; supports ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1 µA - ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - extended junction temperature rating enables use in engine control units and powertrain modules. |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; case dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient shunt path | Both terminals function identically; bidirectional clamping occurs regardless of voltage polarity applied. |
| Case (body) | Thermal and mechanical interface | Exposed copper pad area (0.2" × 0.2") required for thermal dissipation; contributes to RθJA = 72 °C/W rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including 1000-cycle temperature cycling and 96-hour UHAST. |
| Low clamping ratio (VC/VBR) | 1.43 - minimizes overvoltage overshoot during fast transients, protecting 5 V and 3.3 V logic interfaces. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85% RH; compatible with standard SMT reflow without baking. |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage drift over 15+ years in industrial environments. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant; HM3 suffix adds halogen-free molding compound per IEC 61249-2-21. |
Applications
| Automotive Sensor Interface Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping element placed directly at connector entry point to divert >1 kV transients before reaching ADC front-end or signal conditioner ICs. Use Value: Maintains sensor accuracy by limiting voltage excursion to ≤11.2 V during 1000 A surges, preventing latch-up or parametric shift in precision amplifiers. |
Use Scenario: Safeguarding CANH/CANL differential pair in body control modules against ISO 7637-2 Pulse 5a (load dump) and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CANH–CANL to clamp common-mode surges while preserving differential signaling integrity. Use Value: Enables compliance with ISO 11898-2:2016 immunity requirements without degrading bit-rate timing or adding signal distortion. |
| Industrial PLC I/O Protection | Consumer Power Adapter Surge Clamping |
|
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers from field-wiring induced transients and relay coil kickback. IC Role / Device Role / Timing Role: Primary surge arrestor mounted adjacent to terminal block, absorbing up to 800 W pulses without degradation over 10⁵ surge cycles. Use Value: Extends mean time between failures (MTBF) by eliminating false triggering and input stage damage in harsh factory environments. |
Use Scenario: Suppressing line-side surges in AC-DC adapters for smart home devices subjected to lightning-induced mains transients. IC Role / Device Role / Timing Role: Secondary-side TVS on 5 V/12 V output rails to protect USB ports and microcontroller VDD pins from secondary surge coupling. Use Value: Meets UL 62368-1 Annex D and IEC 61000-4-5 Level 3 requirements with single-device solution, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J6.5CAHM3_A/I | Halogen-free molding compound; identical electrical specs and AEC-Q101 qualification. | No difference in circuit performance; required only where halogen-free compliance is mandated by OEM spec. | Select HM3 when environmental compliance (IEC 61249-2-21) is contractually enforced. |
| SMBJ6.5CAHE3_A/I | Lower PPPM (600 W vs. 800 W); same VWM, VBR, VC, and package; non-AEC-Q101 commercial grade. | Limited to non-automotive applications; insufficient for ISO 7637-2 Pulse 5a in engine bay locations. | Use only in cost-sensitive consumer or industrial designs where AEC-Q101 and 800 W rating are not required. |
Compared with SMB8J6.5CAHE3_A/I, the HM3 variant adds halogen-free compliance without trade-offs, while SMBJ6.5CAHE3_A/I sacrifices 25% surge power and automotive qualification-making it unsuitable for under-hood deployment but viable for board-level secondary protection where cost dominates.
Availability
SMB8J6.5CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and consumer power adapter secondary-side protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMB8J6.5CAHE3_A/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, AEC-Q101-qualified transient suppression in space-constrained automotive and industrial PCB layouts.
FAQ
What is the clamping voltage of SMB8J6.5CAHE3_A/I at its rated peak pulse current?
The SMB8J6.5CAHE3_A/I has a maximum clamping voltage (VC) of 11.2 V at 1000 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMB8J6.5CAHE3_A/I maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMB8J6.5CAHE3_A/I suitable for automotive applications?
Yes, SMB8J6.5CAHE3_A/I is AEC-Q101 qualified and explicitly intended for automotive use. It passes HTOL, temperature cycling, UHAST, and ESD testing per AEC-Q101 Rev G, and is rated for operation up to +150 °C junction temperature. The HE3 suffix confirms RoHS compliance and automotive qualification, making SMB8J6.5CAHE3_A/I appropriate for engine control units, body electronics, and ADAS sensor interfaces.
What is the difference between SMB8J6.5CAHE3_A/I and SMBJ6.5CAHE3_A/I?
SMB8J6.5CAHE3_A/I delivers 800 W peak pulse power (PPPM) and is AEC-Q101 qualified, whereas SMBJ6.5CAHE3_A/I provides only 600 W PPPM and lacks AEC-Q101 certification. Both share identical VWM (6.5 V), VBR (7.22–7.98 V), VC (11.2 V), and SMB package. The SMB8J6.5CAHE3_A/I is specified for demanding automotive transients like ISO 7637-2 Pulse 5a, while SMBJ6.5CAHE3_A/I targets commercial-grade applications.
Does SMB8J6.5CAHE3_A/I have polarity markings on the package?
No, SMB8J6.5CAHE3_A/I is a bidirectional TVS diode and carries no polarity marking on the SMB (DO-214AA) case. Its symmetrical construction allows installation in either orientation across protected lines (e.g., CANH–CANL or RS-485 A–B). This eliminates orientation errors during automated placement and simplifies layout for differential signal protection.
What is the maximum reverse leakage current for SMB8J6.5CAHE3_A/I at its stand-off voltage?
The SMB8J6.5CAHE3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 6.5 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss in battery-powered systems and prevents signal distortion in high-impedance sensor interfaces. Leakage remains below 5 µA across the full –55 °C to +125 °C operating range.
SMB8J6.5CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J6.5CAHE3_A/I FAQ
1.How can I place an order for SMB8J6.5CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J6.5CAHE3_A/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 SMB8J6.5CAHE3_A/I reliable?
The price and inventory of SMB8J6.5CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J6.5CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J6.5CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J6.5CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J6.5CAHE3_A/I?
SMB8J6.5CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J6.5CAHE3_A/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 SMB8J6.5CAHE3_A/I?
For technical support, including SMB8J6.5CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J6.5CAHE3_A/I requirements.
6.How does Aetrix verify that SMB8J6.5CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J6.5CAHE3_A/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 SMB8J6.5CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J6.5CAHE3_A/I?
All SMB8J6.5CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J6.5CAHE3_A/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 SMB8J6.5CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMB8J6.5CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J6.5CAHE3_A/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 …
