My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J24C-E3/5B
- Part No.:
- SMB8J24C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J24C-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,345
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J24C-E3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for robust overvoltage protection on signal and power lines. It features 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage (VC) at 20.6 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 SMB8J24C-E3/5B datasheet, SMB8J24C-E3/5B pinout, SMB8J24C-E3/5B application, or SMB8J24C-E3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low leakage (<1.0 μA at VWM), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, critical for consistent clamping under repetitive surge events.
Rated for -55 °C to +150 °C operating junction temperature and qualified to AEC-Q101, the SMB8J24C-E3/5B supports automotive-grade reliability. It meets MSL level 1 per J-STD-020 (peak reflow 260 °C) and complies with UL 94 V-0 flammability requirements for the molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 24 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 26.7–29.5 V at 1 mA - Voltage at which device enters avalanche conduction; ensures reliable triggering above normal operating range. |
| VC (Clamping Voltage) | 38.9 V at IPPM = 20.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 800 W - Maximum transient energy absorption capability with 10/1000 μs waveform; defines surge handling capacity. |
| ID (Reverse Leakage) | <1.0 μA at 24 V - Minimal DC loading on signal/power line during normal operation; preserves signal integrity and power efficiency. |
| TJ max. | 150 °C - Maximum allowable junction temperature; sets thermal design limits for PCB pad layout and ambient derating. |
| RθJA | 72 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; guides heatsinking and power dissipation planning. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking (unlike uni-directional variants which feature cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as input/output for bidirectional surge suppression. |
| Case (body) | Thermal and mechanical interface | DO-214AA molded body provides mechanical stability and thermal path to PCB copper; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under thermal cycling and humidity stress. |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns; peak temperature up to 260 °C supported. |
| UL 94 V-0 compliant molding | Self-extinguishing encapsulant meets safety standards for industrial and automotive end equipment. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102; E3 suffix passes JESD 201 Class 1A whisker test. |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamping transient energy before it reaches MCU ADC inputs or transceiver pins. Use Value: Maintains signal fidelity under ±200 V/100 ms load dump events while adding zero propagation delay or signal distortion. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and ESD from operator contact. IC Role / Device Role / Timing Role: Standoff at 24 V DC logic rails; clamps fast transients (e.g., relay coil flyback) within 1 ns response time. Use Value: Prevents false triggering or latch-up in optocoupler input stages without requiring series impedance or filtering. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end protection stage placed before common-mode chokes and data-line filters. Use Value: Absorbs up to 800 W of 10/1000 μs surge energy while limiting differential voltage to ≤38.9 V across transceiver pins. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals or H-bridge outputs to clamp inductive kickback. Use Value: Eliminates need for snubber RC networks; reduces board space and BOM count while maintaining 150 °C junction rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same DO-214AA package and 24 V VWM, but rated for 600 W PPPM (vs. 800 W); lower IPPM (16.5 A vs. 20.6 A). | Lower surge margin; suitable for non-automotive, lower-risk environments where full AEC-Q101 is not required. | Select when cost sensitivity outweighs need for highest surge headroom and automotive qualification. |
| SAC24 | Same 24 V VWM and bi-directional function, but in smaller SOD-123FL package; lower PPPM (400 W) and higher VC (43 V). | Limited to space-constrained consumer applications; not AEC-Q101 qualified and lacks MSL Level 1 rating. | Choose only for compact, non-automotive designs where footprint reduction is prioritized over surge robustness. |
Compared with SMBJ24CA and SAC24, the SMB8J24C-E3/5B delivers superior surge immunity (800 W), automotive-grade reliability (AEC-Q101), and thermal performance (RθJA = 72 °C/W), making it the preferred choice for mission-critical 24 V system protection where longevity and compliance are mandatory.
Availability
SMB8J24C-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for SMB8J24C-E3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified components.
The SMB8JxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy, bi-directional transient suppression in harsh environments such as automotive powertrain and industrial automation systems.
FAQ
What is the polarity configuration of SMB8J24C-E3/5B?
The SMB8J24C-E3/5B is a bi-directional TVS diode with symmetrical terminals - neither pin is designated anode or cathode. It suppresses transients of either polarity equally, and no color band or marking is present on the DO-214AA body, distinguishing it from uni-directional variants like SMB10J24A.
Is SMB8J24C-E3/5B qualified for automotive use?
Yes, SMB8J24C-E3/5B is AEC-Q101 qualified and rated for operation from -55 °C to +150 °C junction temperature. Its construction - including glass-passivated junction, matte tin-plated leads, and UL 94 V-0 molding - meets automotive reliability and safety requirements for under-hood and chassis-mounted electronics.
What is the maximum clamping voltage of SMB8J24C-E3/5B under surge conditions?
The SMB8J24C-E3/5B has a maximum clamping voltage (VC) of 38.9 V at 20.6 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value represents the worst-case voltage imposed on protected circuitry during standardized surge testing and is confirmed in Vishay's Document Number 88422, page 3.
Does SMB8J24C-E3/5B require special PCB layout considerations?
Yes - optimal performance requires mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal resistance (RθJA = 72 °C/W) and surge ratings. Smaller pads reduce heat dissipation and may derate PPPM and IPPM significantly per Figure 2 in the datasheet.
How does the E3/5B suffix affect SMB8J24C-E3/5B's specifications?
The E3 suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; the 5B denotes 13" diameter tape-and-reel packaging with 3200 units per reel. Neither suffix alters electrical or thermal specs - all parameters remain identical to SMB8J24C-E3/52 or SMB8J24CHE3/5B variants.
SMB8J24C-E3/5B 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- Power - Peak Pulse:
- 800W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J24C-E3/5B FAQ
1.How can I place an order for SMB8J24C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J24C-E3/5B 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 SMB8J24C-E3/5B reliable?
The price and inventory of SMB8J24C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J24C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J24C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J24C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J24C-E3/5B?
SMB8J24C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J24C-E3/5B 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 SMB8J24C-E3/5B?
For technical support, including SMB8J24C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J24C-E3/5B requirements.
6.How does Aetrix verify that SMB8J24C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J24C-E3/5B 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 SMB8J24C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J24C-E3/5B?
All SMB8J24C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J24C-E3/5B, 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 SMB8J24C-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J24C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J24C-E3/5B 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 …
