My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ24-E3/5B
;;2.jpg)
- Part No.:
- SMBJ24-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,227
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ24-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ24-E3/5B datasheet, SMBJ24-E3/5B pinout, SMBJ24-E3/5B application, or SMBJ24-E3/5B equivalent, key selection criteria include clamping performance under surge conditions, thermal resistance (RθJA = 100 °C/W), RoHS-compliant commercial-grade construction, and compatibility with automated SMT placement on PCBs with 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, responding to transient overvoltages faster than 1 ns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and supports repetitive surge duty cycles up to 0.01 % with derating above 25 °C ambient. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3/HM3 suffixes - though SMBJ24-E3/5B itself is commercial grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 26.7 V / 29.5 V at IT = 1 mA - Ensures reliable turn-on within tight tolerance band for predictable protection threshold. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage seen by protected circuit during 600 W transient; critical for downstream IC survivability. |
| PPPM | 600 W (10/1000 µs) - Peak surge power handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surge events. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area (0.2" × 0.2" pads specified) for thermal management. |
| IFSM | 100 A (8.3 ms half-sine) - Forward surge capability; supports protection against inductive switch-off transients in power circuits. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC-standard reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse-biased clamping event. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 24 V supply rail); avalanche breakdown initiates here when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with industrial surge immunity standards (IEC 61000-4-5) without external series impedance. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 µA), critical for battery-powered or low-power sensor interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow processing without baking, reducing manufacturing overhead. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms lead-free, RoHS-compliant commercial-grade construction meeting global environmental directives. |
| Automated placement optimized | Low-profile SMB package with defined lead geometry supports high-yield pick-and-place assembly at >30,000 UPH. |
Applications
| Industrial PLC I/O Protection | 24 V DC Power Rail Protection |
|---|---|
|
Use Scenario: Protecting digital input modules in programmable logic controllers from inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input terminal and ground to clamp transients before they reach optocoupler or MCU GPIO. Use Value: Limits voltage to ≤38.9 V during 15.4 A surge, preventing damage to 3.3 V or 5 V logic interfaces downstream. |
Use Scenario: Safeguarding 24 V supply lines feeding motor drivers, solenoids, or industrial sensors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus, coordinated with upstream fuses or poly-switches. Use Value: Absorbs 600 W surge energy without degradation, maintaining system uptime in factory automation environments. |
| Automotive Body Control Module (BCM) | Telecom Interface Protection |
|
Use Scenario: Protecting LIN bus transceivers and load switches in non-safety-critical automotive subsystems. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V/24 V auxiliary rails, supplementing primary protection in BCM designs. Use Value: Withstands load dump pulses up to ISO 7637-2 Pulse 5a (when combined with appropriate series impedance). |
Use Scenario: Shielding RS-485 or CAN FD data lines in base station remote units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Line-side TVS on differential pair, referenced to local ground plane with controlled trace impedance. Use Value: Fast response (<1 ns) and low clamping voltage preserve signal integrity while meeting ITU-T K.20/21 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free materials are mandated by OEM or regional regulations. | Choose SMBJ24A-M3/5B for compliance-driven designs requiring halogen-free bill-of-materials. |
| SMAJ24A-E3/61 | Lower power rating (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VC. | Not suitable for 600 W surge events; limited to lower-energy transients or space-constrained layouts. | Select SMAJ24A-E3/61 only if board space is critical and surge threat level is ≤400 W (e.g., consumer-grade peripherals). |
Compared with SMBJ24-E3/5B, the M3 variant offers identical protection performance with halogen-free construction, while the SMAJ24A-E3/61 trades 33 % peak power capacity and thermal performance for 30 % smaller PCB area - making SMBJ24-E3/5B the optimal choice for industrial 24 V systems requiring full IEC 61000-4-5 compliance.
Availability
SMBJ24-E3/5B is available at Aetrix Electronics and suitable for industrial automation, 24 V DC power distribution, and telecom interface protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ24-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 reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh industrial and transportation environments, delivering consistent clamping performance across temperature and lifetime with minimal parameter drift.
FAQ
What is the maximum clamping voltage of SMBJ24-E3/5B under surge conditions?
The SMBJ24-E3/5B exhibits a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current of 15.4 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during transient events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The SMBJ24-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ24-E3/5B suitable for automotive applications?
SMBJ24-E3/5B is a commercial-grade part and not AEC-Q101 qualified; it carries the E3 suffix indicating RoHS compliance but no automotive qualification. For automotive use, Vishay specifies the HE3 or HM3 variants (e.g., SMBJ24AHE3_B/I), which undergo stress testing per AEC-Q101. The SMBJ24-E3/5B may be used in non-safety-critical automotive subsystems only after full system-level validation - however, SMBJ24-E3/5B is explicitly intended for industrial and telecom applications per Vishay's documentation.
What does the "/5B" suffix indicate in SMBJ24-E3/5B?
The "/5B" suffix in SMBJ24-E3/5B denotes the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format is optimized for high-volume SMT assembly lines using standard 13" tape feeders. The "E3" portion confirms RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability requirements - distinct from M3 (halogen-free) or HE3 (AEC-Q101 qualified) variants.
How does SMBJ24-E3/5B compare to bidirectional TVS diodes like SMBJ24CA?
The SMBJ24-E3/5B is unidirectional and functions only during reverse-bias overvoltage events, with forward conduction limited to ~3.5 V at 50 A. In contrast, SMBJ24CA provides symmetrical clamping in both polarities, making it suitable for AC lines or differential data buses. SMBJ24-E3/5B offers lower leakage and tighter VBR tolerance in the reverse direction, while SMBJ24CA sacrifices some precision for bidirectional capability - the choice depends strictly on circuit topology and whether the protected node references ground unidirectionally or floats differentially.
What PCB layout guidelines apply to SMBJ24-E3/5B for optimal thermal and surge performance?
For optimal performance, Vishay specifies mounting SMBJ24-E3/5B on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve the rated RθJA of 100 °C/W. Traces to the device must be short and wide to minimize inductance, and the ground connection should tie directly to a solid internal ground plane. Avoid thermal relief on pads unless necessary for manufacturability - doing so increases junction temperature rise during surge events and risks parametric shift or failure. The SMBJ24-E3/5B datasheet provides exact pad dimensions in inches and millimeters.
SMBJ24-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 14A
- Power - Peak Pulse:
- 600W
- 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 (SMBJ)
SMBJ24-E3/5B FAQ
1.How can I place an order for SMBJ24-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24-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 SMBJ24-E3/5B reliable?
The price and inventory of SMBJ24-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 SMBJ24-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ24-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24-E3/5B?
SMBJ24-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24-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 SMBJ24-E3/5B?
For technical support, including SMBJ24-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24-E3/5B requirements.
6.How does Aetrix verify that SMBJ24-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ24-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 SMBJ24-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ24-E3/5B?
All SMBJ24-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24-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 SMBJ24-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ24-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24-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 …
