My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG24CA-E3/52
- Part No.:
- SMBG24CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24CA-E3/52.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,891
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG24CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 38.9 V at 15.4 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG24CA-E3/52 datasheet, SMBG24CA-E3/52 pinout, SMBG24CA-E3/52 application, or SMBG24CA-E3/52 equivalent, this device is selected for high-reliability transient suppression in automotive sensor interfaces, industrial I/O ports, and telecom line protection where bidirectional surge immunity and low clamping ratio are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions - confirmed by specification notes stating "Electrical characteristics apply in both directions" and listing matched VBR min/max for CA-suffix parts. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the low incremental surge resistance enables tight clamping under high-current transients.
The SMBG24CA-E3/52 is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation on standard 5.0 mm × 5.0 mm copper pads per terminal as defined in the derating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during surges without premature triggering. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage under 600 W 10/1000 µs surge; limits downstream voltage stress to ≤38.9 V. |
| PPPM | 600 W - Peak pulse power handling capability; supports repetitive 0.01% duty cycle transients per spec. |
| ID @ VWM | 1.0 µA - Reverse leakage current at 24 V; negligible loading on high-impedance signal lines. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional symmetry eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Identical terminal behavior in both directions; connects to protected line (e.g., CAN_H or RS-485 A). |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal forming symmetrical clamp path; connects to reference (e.g., ground or complementary line). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC-coupled lines (e.g., CAN, RS-485, USB D+/D−) without polarity concerns. |
| 600 W 10/1000 µs rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when properly mounted on 5 mm × 5 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces downstream of the TVS. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensors, and infotainment interfaces requiring long-term field reliability. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs against load dump, ISO 7637-2 pulses, and ESD events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching CAN transceiver. Use Value: Limits transient voltage to ≤38.9 V, preserving integrity of 5 V CAN transceivers and preventing bus lockup during 10/1000 µs surges up to 15.4 A. | Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Differential line protector between transceiver and field wiring, leveraging symmetry to handle ± surges equally on A/B lines. Use Value: Maintains signal integrity by clamping common-mode transients to <40 V while adding <0.5 pF capacitance at 0 V bias - no data rate degradation at 10 Mbps. |
| Telecom DSL Line Protection | Consumer Sensor Signal Conditioning |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary surge arrestor on line-side interface, coordinated with secondary GDT or MOV for multi-stage protection. Use Value: Responds in <1 ns to limit voltage rise before secondary protectors activate, reducing let-through energy to <10 mJ per event. | Use Scenario: Protecting analog outputs of automotive pressure or temperature sensors connected to microcontroller ADC inputs. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) clamp on 24 V supply rail or sensor output line, placed adjacent to connector. Use Value: Prevents latch-up or damage to 12-bit ADC front-end during ESD contact discharge (IEC 61000-4-2 ±8 kV) without affecting DC accuracy due to negligible leakage. |
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 VWM (24 V), but lower PPPM = 600 W (identical), higher VC = 38.9 V (same), yet rated only to 125 °C TJ max and not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance requirements. | Select SMBJ24CA only if AEC-Q101 is not mandated and cost is prioritized over extended temperature margin. |
| SMCJ24CA | Same VWM/VBR specs, but larger SMC (DO-214AB) package, higher PPPM = 1500 W, and VC = 38.9 V (same), with identical AEC-Q101 qualification. | Requires larger PCB footprint and different pad layout; preferred where higher surge margin or legacy SMC footprint is required. | Choose SMCJ24CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when existing board design uses SMC package. |
Compared with SMBJ24CA, SMBG24CA-E3/52 adds AEC-Q101 qualification and +150 °C operation for under-hood use; versus SMCJ24CA, it delivers equivalent protection in a 30% smaller SMBG footprint - enabling compact automotive sensor modules without sacrificing surge rating.
Availability
SMBG24CA-E3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial communications interfaces, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG24CA-E3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed for high-density surface-mount transient protection in space-constrained automotive and industrial systems, combining AEC-Q101 qualification, low-profile packaging, and precise bidirectional clamping performance.
FAQ
What is the clamping voltage of SMBG24CA-E3/52 at its rated peak pulse current?
The SMBG24CA-E3/52 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 Figure 1 and Table on page 2 of Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG24CA-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG24CA-E3/52 suitable for automotive applications?
Yes, SMBG24CA-E3/52 is AEC-Q101 qualified per Vishay documentation (note "(1) AEC-Q101 qualified" on page 3), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its -55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validated reliability testing meet automotive production requirements. The SMBG24CA-E3/52 is explicitly listed in Vishay's AEC-Q101 qualified product table.
How does the bidirectional nature of SMBG24CA-E3/52 affect its placement in a circuit?
The SMBG24CA-E3/52 has no polarity marking and functions identically in both directions, so it can be placed across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs (CAN_H/CAN_L, RS-485 A/B) or AC-coupled lines. Unlike unidirectional TVS diodes, the SMBG24CA-E3/52 requires no orientation check during assembly, simplifying automated placement and eliminating risk of reverse installation. Its terminals are electrically interchangeable.
What is the maximum reverse leakage current for SMBG24CA-E3/52 at its stand-off voltage?
The SMBG24CA-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 24 V stand-off voltage (VWM), as specified in the Electrical Characteristics table on page 2 of Vishay document 88456. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance circuits such as sensor outputs or precision analog monitoring paths. The SMBG24CA-E3/52 maintains this leakage performance up to +125 °C ambient.
Does SMBG24CA-E3/52 require special PCB layout considerations?
Yes - Vishay specifies mounting on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and proper thermal dissipation. Smaller pads cause significant derating per Figure 2. The SMBG24CA-E3/52 also requires symmetric trace routing for differential applications and avoidance of thermal vias directly under the package body to maintain junction-to-lead thermal resistance of 20 °C/W. These layout rules are documented in the Mechanical Data section.
SMBG24CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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 (SMBG)
SMBG24CA-E3/52 FAQ
1.How can I place an order for SMBG24CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24CA-E3/52 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 SMBG24CA-E3/52 reliable?
The price and inventory of SMBG24CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG24CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG24CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24CA-E3/52?
SMBG24CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24CA-E3/52 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 SMBG24CA-E3/52?
For technical support, including SMBG24CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24CA-E3/52 requirements.
6.How does Aetrix verify that SMBG24CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG24CA-E3/52 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 SMBG24CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG24CA-E3/52?
All SMBG24CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24CA-E3/52, 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 SMBG24CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG24CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24CA-E3/52 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 …
