My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ24CAHE3/5B
;;2.jpg)
- Part No.:
- SMBJ24CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24CAHE3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ24CAHE3/5B 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 (10/1000 µs waveform), protecting MOSFETs and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ24CAHE3/5B datasheet, SMBJ24CAHE3/5B pinout, SMBJ24CAHE3/5B application, or SMBJ24CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified between 26.7 V (min) and 29.5 V (max) at 1.0 mA test current. Its low incremental surge resistance ensures stable clamping under repetitive 10/1000 µs transients up to 0.01% duty cycle.
The device uses a glass-passivated silicon junction and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is RoHS-compliant and AEC-Q101 qualified (indicated by HE3 suffix), supporting automotive-grade reliability without polarity marking on the case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VC (Clamping Voltage) | 38.9 V at IPPM = 15.4 A - Peak voltage seen by protected circuit during 10/1000 µs transient |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity under standardized 10/1000 µs waveform |
| IPPM (Peak Pulse Current) | 15.4 A - Maximum non-repetitive surge current the device safely clamps |
| RθJA (Junction-to-Ambient) | 100 °C/W - Thermal resistance defining temperature rise under 5.0 W steady-state dissipation |
| TJ (Max Operating Temp) | +150 °C - Maximum junction temperature enabling operation in under-hood or industrial enclosures |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" length, compatible with standard SMT pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Interchangeable terminals; clamps voltage surges of either polarity between them |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 600 W peak pulse power (10/1000 µs) | Robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VWM ≈ 1.62) | Minimizes overvoltage stress on downstream ICs during transient suppression |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking or special handling prior to assembly |
| Glass passivated junction | Ensures long-term stability and low leakage (<1.0 µA at VWM) across temperature |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and current-sense amplifiers from inductive kickback in BLDC motor inverters. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus or phase outputs to clamp switching transients. Use Value: Limits voltage spikes to ≤38.9 V, preventing latch-up or oxide breakdown in 40 V-rated MOSFETs and op-amps. |
Use Scenario: ESD and load-dump protection on LIN bus lines and window lift actuator control inputs. IC Role / Device Role / Timing Role: Standoff-rated transient suppressor connected between signal line and chassis ground. Use Value: Maintains 24 V system compatibility while surviving 12 V battery load dump pulses per ISO 16750-2. |
| Industrial Sensor Interfaces | Telecom Power Supply Inputs |
|
Use Scenario: Guarding analog front-ends of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) clamping device on 4–20 mA loop or RS-485 lines. Use Value: Prevents sensor IC damage from nearby relay switching noise without distorting low-frequency analog signals. |
Use Scenario: Secondary-side surge protection on 24 V telecom power distribution boards. IC Role / Device Role / Timing Role: Final-stage TVS before DC-DC converters feeding FPGA or DSP subsystems. Use Value: Absorbs residual transients after primary MOV filtering, ensuring <5.0 W steady-state dissipation remains within safe limits. |
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-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification | No difference in circuit performance or layout; differs only in material compliance documentation | Select when halogen-free BOM compliance is required per IPC-1752A or OEM environmental policy |
| SAC24-TP | Same VWM (24 V) but lower PPPM (400 W); TO-236 (SOT-23) package; unidirectional only | Limited to single-polarity protection; unsuitable for AC-coupled or differential signal lines | Choose only for space-constrained unidirectional rails where 400 W clamping suffices and footprint reduction is critical |
Compared with SMBJ24CAHE3/5B, the M3/5B alternative offers identical protection performance with halogen-free materials, while SAC24-TP trades peak power and bidirectionality for smaller size-making it viable only in non-automotive, unidirectional, low-energy applications.
Availability
SMBJ24CAHE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply with AEC-Q101 traceability and full RoHS compliance.
Supply support for SMBJ24CAHE3/5B 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, and protection devices with emphasis on reliability and automotive qualification.
The SMBJ series was developed for high-energy transient suppression in harsh environments, targeting design-in across automotive, industrial, and telecom infrastructure where robustness and standardized qualification matter.
FAQ
What does the "CA" suffix mean in SMBJ24CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ24CAHE3/5B clamps voltage transients of either polarity between its two terminals. Unlike unidirectional variants (e.g., SMBJ24A), it has no cathode band marking and provides symmetrical protection for AC-coupled lines or differential buses without polarity concerns.
Is SMBJ24CAHE3/5B suitable for automotive applications?
Yes, SMBJ24CAHE3/5B is AEC-Q101 qualified (confirmed by HE3 suffix), making it suitable for automotive use cases such as body control modules and infotainment power rails. Its 150 °C max junction temperature, MSL Level 1 rating, and validated surge performance meet requirements for under-dash and engine bay environments.
What is the clamping voltage of SMBJ24CAHE3/5B at rated surge current?
The maximum clamping voltage (VC) of SMBJ24CAHE3/5B is 38.9 V when subjected to its rated peak pulse current of 15.4 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events.
How does SMBJ24CAHE3/5B differ from SMBJ24AHE3/5B?
SMBJ24CAHE3/5B is bidirectional with symmetrical clamping, while SMBJ24AHE3/5B is unidirectional and features a cathode band marking. The "CA" version supports AC signal lines and differential pairs; the "A" version is intended for DC rails where polarity is fixed and forward conduction may be needed during fault conditions.
What PCB pad layout is recommended for SMBJ24CAHE3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMBJ24CAHE3/5B to achieve rated 600 W pulse power and thermal performance. Smaller pads reduce surge capability and increase junction temperature-verified in derating curves (Fig. 2) and thermal resistance data (RθJA = 100 °C/W).
SMBJ24CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ24CAHE3/5B FAQ
1.How can I place an order for SMBJ24CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24CAHE3/5B 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 SMBJ24CAHE3/5B reliable?
The price and inventory of SMBJ24CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ24CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24CAHE3/5B?
SMBJ24CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24CAHE3/5B 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 SMBJ24CAHE3/5B?
For technical support, including SMBJ24CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ24CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ24CAHE3/5B 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 SMBJ24CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ24CAHE3/5B?
All SMBJ24CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24CAHE3/5B, 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 SMBJ24CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ24CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24CAHE3/5B 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 …
