My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ24CA-M3/52
;;2.jpg)
- Part No.:
- SMBJ24CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24CA-M3/52.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,214
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ24CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 24 V standoff voltage (VWM), 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ24CA-M3/52 datasheet, SMBJ24CA-M3/52 pinout, SMBJ24CA-M3/52 application, or SMBJ24CA-M3/52 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.62), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both polarities, enabling use on AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR (26.7–29.5 V at 1 mA) and low incremental surge resistance, critical for fast transient suppression.
The SMBJ24CA-M3/52 delivers consistent clamping performance across -55 °C to +150 °C junction temperature range, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - Confirmed bidirectional breakdown threshold; ensures reliable triggering above system operating voltage. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream components like microcontrollers or transceivers. |
| PPPM | 600 W - Peak pulse power handling with 0.01% duty cycle; suitable for lightning-induced surges and inductive switching transients. |
| IPPM | 15.4 A - Peak surge current capacity under standard 10/1000 µs waveform; validated with derating above 25 °C ambient. |
| Junction Temp | -55 °C to +150 °C - Full operational range enables deployment in automotive under-hood or industrial motor drive environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm max length, 4.06 mm max width, and 2.20 mm max height; optimized for high-density PCB layouts. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as anode and cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Terminals 1 & 2) | Bidirectional surge path | Both terminals are electrically identical; connects across protected line (e.g., RS-485 A/B) to clamp overvoltage in either direction. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without derating in typical PCB layouts. |
| Clamping voltage ≤ 38.9 V at 15.4 A | Provides 1.62× VWM clamping ratio - tighter than many competing SMB TVS devices - reducing stress on 3.3 V or 5 V logic interfaces. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and JEDEC JESD201 Class 2 whisker resistance for long-term reliability. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without preconditioning; eliminates moisture sensitivity handling overhead in production. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at 24 V), critical for low-power sensor nodes and battery-backed systems. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
|
Use Scenario: Protecting gate drivers and position sensor inputs from inductive kickback in BLDC motor inverters. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across half-bridge gate-source or encoder differential lines. Use Value: Limits transient voltage to ≤38.9 V, preventing MOSFET gate oxide damage and Hall-effect sensor latch-up during 100 A+ switching events. |
Use Scenario: Shielding LIN bus transceivers and door module microcontrollers from load dump and jump-start surges. IC Role / Device Role / Timing Role: Line-to-line TVS on LIN data pair (LIN-H/L), absorbing ±100 V/50 ms pulses per ISO 7637-2 Pulse 5a. Use Value: Maintains signal integrity below 40 V clamping level while surviving >1000 surge cycles due to low thermal resistance (RθJL = 20 °C/W). |
| Telecom Power Feeds | Consumer Sensor Interfaces |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC controllers from induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Secondary-level TVS on secondary-side 48 V bus, downstream of primary surge arrestors. Use Value: Handles 600 W short-duration surges without thermal runaway, verified per UL 497B recognition for telecom protector classification. |
Use Scenario: Protecting I²C/SPI lines of environmental sensors (e.g., humidity, pressure) in smart home hubs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) bidirectional clamp on differential sensor outputs. Use Value: Adds <1 ns response time and <1 µA leakage at 24 V, preserving signal fidelity and battery life in always-on IoT nodes. |
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-E3/52 | Same electrical specs and SMB package; RoHS-compliant but not halogen-free (E3 vs. M3). | Acceptable where halogen-free requirement is not mandated by end-equipment standards (e.g., non-automotive consumer). | Select when cost optimization is prioritized and halogen-free certification is not required. |
| SMAJ24CA-M3 | Lower 400 W PPPM, higher VC = 39.4 V at 12.3 A, SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-current inductive loads. | Choose only if board space is constrained and surge energy remains below 400 W rating. |
Compared with SMBJ24CA-E3/52, the SMBJ24CA-M3/52 adds halogen-free compliance for automotive and green electronics programs; versus SMAJ24CA-M3, it provides 50% higher surge power headroom and superior thermal dissipation - essential for industrial motor drives and telecom infrastructure.
Availability
SMBJ24CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, telecom power feeds, and consumer sensor interface designs requiring stable component supply and halogen-free compliance.
Supply support for SMBJ24CA-M3/52 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMBJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What is the clamping voltage of SMBJ24CA-M3/52 at its rated peak pulse current?
The SMBJ24CA-M3/52 has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024. The SMBJ24CA-M3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for demanding industrial and automotive applications.
Is SMBJ24CA-M3/52 suitable for bidirectional signal line protection?
Yes, SMBJ24CA-M3/52 is explicitly designed for bidirectional protection, as indicated by the "CA" suffix and confirmed in Vishay's documentation: electrical characteristics apply identically in both directions. It is commonly deployed across differential interfaces such as RS-485, CAN, LIN, and Ethernet pairs. The SMBJ24CA-M3/52 requires no polarity orientation during placement, simplifying layout and assembly for symmetric transient threats.
Does SMBJ24CA-M3/52 meet automotive qualification standards?
The base SMBJ24CA-M3/52 is commercial-grade and halogen-free RoHS-compliant, but not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, Vishay offers the HM3 variant (e.g., SMBJ24CAHM3_X). The SMBJ24CA-M3/52 itself is widely used in non-safety-critical automotive subsystems (e.g., body control modules) where customer qualification suffices, supported by its MSL Level 1 rating and 260 °C reflow compatibility.
What is the thermal resistance of SMBJ24CA-M3/52, and how does it affect layout?
The SMBJ24CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This means effective heat dissipation relies on adequate copper area - undersized pads will raise junction temperature during repetitive surges. The SMBJ24CA-M3/52 datasheet specifies minimum pad dimensions to sustain its 600 W rating; deviating reduces safe surge repetition rate.
How does the M3 suffix differ from E3 in SMBJ24CA-M3/52?
The "M3" suffix in SMBJ24CA-M3/52 denotes halogen-free, RoHS-compliant construction, whereas "E3" indicates RoHS-compliant but standard brominated flame-retardant molding compound. Both share identical electrical specs and SMB package dimensions. The SMBJ24CA-M3/52 satisfies stricter environmental mandates (e.g., JEDEC J-STD-609A Class 2a) and is preferred for automotive, medical, and green electronics programs where halogen content is restricted.
SMBJ24CA-M3/52 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- 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)
SMBJ24CA-M3/52 FAQ
1.How can I place an order for SMBJ24CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24CA-M3/52 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 SMBJ24CA-M3/52 reliable?
The price and inventory of SMBJ24CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ24CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24CA-M3/52?
SMBJ24CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24CA-M3/52 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 SMBJ24CA-M3/52?
For technical support, including SMBJ24CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ24CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ24CA-M3/52 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 SMBJ24CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ24CA-M3/52?
All SMBJ24CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24CA-M3/52, 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 SMBJ24CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ24CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24CA-M3/52 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 …
