My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J5.0CAHE3_B/I
- Part No.:
- SMB8J5.0CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHE3_B/I.pdf
- Description:
- 800W,5.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,323
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J5.0CAHE3_B/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 5.0 V stand-off voltage (VWM), 9.2 V maximum clamping voltage (VC) at 2000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J5.0CAHE3_B/I datasheet, SMB8J5.0CAHE3_B/I pinout, SMB8J5.0CAHE3_B/I application, or SMB8J5.0CAHE3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.84), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping for AC-coupled or floating lines without polarity sensitivity.
Rated for -55 °C to +150 °C operating junction temperature and qualified to AEC-Q101, SMB8J5.0CAHE3_B/I supports automotive-grade reliability with MSL Level 1 moisture sensitivity and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Stand-off voltage; ensures no conduction during normal 5 V system operation |
| VBR min/max | 6.40 V / 7.25 V at 10 mA - Breakdown threshold range defining reliable turn-on margin |
| VC @ IPPM | 9.2 V at 2000 A - Clamping voltage limiting downstream IC stress under worst-case 10/1000 µs surge |
| PPPM | 800 W - Peak pulse power handling per 10/1000 µs waveform, derated above 25 °C |
| ID @ VWM | 2000 μA max - Low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150 °C - Enables placement near heat sources in engine control units and motor drives |
| Package | SMB (DO-214AA) - Standardized surface-mount footprint with 2.20 mm height and 5.59 mm length |
Pinout & Package
SMB8J5.0CAHE3_B/I is housed in an SMB (DO-214AA) package: a two-terminal, non-polarized surface-mount device with cathode band omitted per bidirectional construction. Terminals are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No polarity marking; either terminal serves as input/output for transient energy diversion |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; mounted on 5.0 mm × 5.0 mm copper pads for RθJA = 72 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and ADAS sensor interfaces |
| Low clamping ratio (VC/VWM = 1.84) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without preconditioning or baking |
| Glass-passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surges |
| Halogen-free RoHS-compliant (HM3 suffix) | Meets automotive environmental requirements and JEDEC JESD201 Class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits transient voltage to ≤9.2 V during 2000 A surges, preserving integrity of 5 V rail and 3.3 V logic interfaces without adding series impedance. |
Use Scenario: Safeguarding PLC digital input modules against induced surges from relay coil switching and field wiring faults. IC Role / Device Role / Timing Role: Primary surge suppression device on 24 V DC input lines, coordinated with upstream fusing and filtering. Use Value: Absorbs 800 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV/12 Ω) immunity testing. |
| Consumer USB Interface Protection | Telecom Line Card Surge Suppression |
Use Scenario: Shielding USB 2.0 D+/D− lines in portable medical monitors and smart home hubs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) bidirectional clamp integrated into USB connector PCB footprint. Use Value: Maintains signal integrity up to 480 Mbps while clamping ±8 kV contact ESD per IEC 61000-4-2 with <1 ns response. |
Use Scenario: Front-end protection for Ethernet PHYs and DSL line drivers exposed to lightning-induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: First-stage TVS in hybrid protection scheme, shunting bulk energy before GDT or MOV secondary stages. Use Value: Handles repetitive 10/1000 µs surges up to 2000 A with thermal resistance optimized for 72 °C/W junction-to-ambient dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/52 | Unqualified commercial grade; 1000 W PPPM (unidirectional rating only); same VWM/VC but lower IPPM (1000 A) | Lacks AEC-Q101 qualification and automotive traceability; suitable for non-automotive industrial use | Select when cost sensitivity outweighs automotive qualification requirements and surge levels remain ≤1000 A |
| SMCJ5.0CAHE3_A/H | Same electrical specs but in larger SMC (DO-214AB) package; 1500 W PPPM; RθJA = 35 °C/W | Higher power handling and better thermal performance, but requires 2.5× PCB area vs. SMB | Choose for systems requiring >800 W surge margin or extended thermal cycling in high-ambient environments |
Compared with SMBJ5.0CA-E3/52 and SMCJ5.0CAHE3_A/H, SMB8J5.0CAHE3_B/I uniquely balances AEC-Q101 compliance, SMB footprint constraints, and 2000 A surge capability - making it optimal for space-constrained automotive modules where qualification and clamping precision are non-negotiable.
Availability
SMB8J5.0CAHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB8J5.0CAHE3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, high-power-density solutions for automotive and industrial markets.
SMB8J5.0CAHE3_B/I belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes engineered specifically for robust transient suppression in AEC-Q101–compliant automotive subsystems and harsh-environment industrial controls.
FAQ
What is the clamping voltage of SMB8J5.0CAHE3_B/I at its rated peak pulse current?
The SMB8J5.0CAHE3_B/I has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current of 2000 A using the 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 5 V logic and interface ICs in the SMB8J5.0CAHE3_B/I protection circuit.
Is SMB8J5.0CAHE3_B/I suitable for automotive applications?
Yes, SMB8J5.0CAHE3_B/I is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant, automotive-grade construction. It meets MSL Level 1, operates from -55 °C to +150 °C, and is specified for use in engine control units, body electronics, and ADAS sensor interfaces - all validated per the full AEC-Q101 stress test suite referenced in Vishay document 88422.
What does the "B/I" suffix mean in SMB8J5.0CAHE3_B/I?
The "B/I" suffix in SMB8J5.0CAHE3_B/I indicates packaging configuration: "B" denotes the base ordering variant (AEC-Q101 qualified), and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This matches Vishay's preferred package code "I" in their ordering table and ensures compatibility with high-volume SMT pick-and-place equipment.
How does SMB8J5.0CAHE3_B/I differ from unidirectional SMBJ5.0A variants?
SMB8J5.0CAHE3_B/I is bidirectional with symmetrical clamping and no polarity marking, whereas unidirectional SMBJ5.0A types feature a cathode band and conduct only in reverse bias. The SMB8J5.0CAHE3_B/I delivers 2000 A IPPM and 800 W PPPM, versus 1000 A/1000 W for SMBJ5.0A - reflecting distinct surge-handling design priorities aligned with AC or floating-line protection needs.
What is the thermal resistance of SMB8J5.0CAHE3_B/I under standard mounting conditions?
Under standard mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, SMB8J5.0CAHE3_B/I exhibits a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W. Its junction-to-lead resistance (RθJL) is 20 °C/W, supporting effective heat transfer to PCB copper - critical for maintaining TJ ≤ 150 °C during repetitive surge events in enclosed automotive enclosures.
SMB8J5.0CAHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 5V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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)
SMB8J5.0CAHE3_B/I FAQ
1.How can I place an order for SMB8J5.0CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHE3_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 SMB8J5.0CAHE3_B/I reliable?
The price and inventory of SMB8J5.0CAHE3_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 SMB8J5.0CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHE3_B/I?
SMB8J5.0CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHE3_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 SMB8J5.0CAHE3_B/I?
For technical support, including SMB8J5.0CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHE3_B/I requirements.
6.How does Aetrix verify that SMB8J5.0CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHE3_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 SMB8J5.0CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHE3_B/I?
All SMB8J5.0CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHE3_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 SMB8J5.0CAHE3_B/I part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CAHE3_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 …
