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Vishay General Semiconductor - Diodes Division SMBJ24CAHE3_B/H
- Part No.:
- SMBJ24CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24CAHE3_B/H.pdf
- Description:
- 600W,24V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,070
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Product details
Overview
SMBJ24CAHE3_B/H 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 power and signal lines. It features 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in industrial sensor interfaces and automotive ECUs for ESD and load-dump protection.
For engineers reviewing the SMBJ24CAHE3_B/H datasheet, SMBJ24CAHE3_B/H pinout, SMBJ24CAHE3_B/H application, or SMBJ24CAHE3_B/H equivalent, this device is evaluated for bidirectional surge suppression in 24 V rail systems, reverse polarity tolerance, AEC-Q101 qualification status, and thermal derating above 25 °C ambient.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) ranging from 26.7 V to 29.5 V at 1 mA test current. Its low incremental surge resistance ensures stable clamping under repetitive 10/1000 μs transients up to 0.01% duty cycle.
Designed for surface-mount assembly on 5.0 mm × 5.0 mm copper pads, it delivers 100 °C/W junction-to-ambient thermal resistance (RθJA) and supports operating junction temperatures from –55 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse stand-off 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 range; ensures reliable triggering across manufacturing lot variation. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress below 40 V threshold. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | 1.0 μA - Reverse leakage at rated stand-off voltage; negligible power loss in always-on protection circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with 5.59 mm length, 4.06 mm width, and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency. |
| Case / Body | Non-electrical mechanical interface | Plastic molded body with UL 94 V-0 rating; provides insulation and thermal mass for surge energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - supports PPAP and long-term reliability requirements. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (e.g., 4 kV line-to-ground) without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic interfacing with 24 V supply domains. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow soldering without moisture sensitivity concerns or baking preconditioning. |
| Glass passivated junction | Ensures stable VBR and low leakage over 10+ years in humid or thermally cycled environments - verified per JESD22-A108. |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and CAN node power inputs against load dump and jump-start transients in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between VBAT and GND, absorbing >95% of surge energy before reaching downstream regulator or transceiver. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge standards without additional series impedance or filtering. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop drivers) and digital I/Os of PLC modules from field-induced ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt protector placed directly at connector entry point, limiting transient rise time to <1 ns. Use Value: Prevents latch-up or gate oxide damage in op-amps and microcontrollers while maintaining signal integrity up to 1 MHz bandwidth. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, access points) against AC/DC adapter surges and lightning-induced common-mode transients on 48 V input rails. IC Role / Device Role / Timing Role: Primary-level TVS in parallel with bulk input capacitor, activated within <1 ns to clamp spikes exceeding 60 V. Use Value: Reduces need for secondary-stage TVS or varistors - simplifies BOM and improves system-level surge margin by 20%. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., washing machine control boards, HVAC actuators). IC Role / Device Role / Timing Role: Fast-response shunt clamp across motor terminals or H-bridge supply rails, diverting inductive kickback away from MOSFETs and gate drivers. Use Value: Extends MOSFET lifetime by limiting VDS overshoot to ≤45 V - validated for >100,000 motor start-stop cycles. |
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 commercial grade (non-AEC-Q101 qualified); 750-unit tape-and-reel delivery. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle traceability is not required. |
| SMCJ24CAHE3_A/H | Higher power rating (1500 W PPPM), larger SMC (DO-214AB) package; identical VWM, VBR, and VC specs; also AEC-Q101 qualified. | Used where higher surge repetition rate or longer pulse duration (e.g., ISO 16750-2) demands greater energy absorption. | Choose when system-level testing reveals marginal margin with SMBJ24CAHE3_B/H under repeated surge stress. |
Compared with SMBJ24CA-E3/52, SMBJ24CAHE3_B/H adds AEC-Q101 qualification and tighter process controls for automotive use; compared with SMCJ24CAHE3_A/H, it trades 2.5× lower surge energy capacity for 30% smaller PCB footprint and lower parasitic inductance - critical for fast-rising transients.
Availability
SMBJ24CAHE3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor controllers requiring stable component supply across multi-year production cycles.
Supply support for SMBJ24CAHE3_B/H 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, power efficiency, and automotive-grade validation.
The SMBJ series targets board-level transient suppression in harsh environments - engineered for robustness in automotive, industrial, and telecom infrastructure where failure modes must be predictable and mitigated.
FAQ
What is the clamping voltage of SMBJ24CAHE3_B/H at its rated peak pulse current?
The SMBJ24CAHE3_B/H has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value is guaranteed across temperature and process variation per Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The SMBJ24CAHE3_B/H maintains this clamping performance in bidirectional operation, making it suitable for protecting 24 V systems where downstream components tolerate up to 40 V transient overvoltage.
Is SMBJ24CAHE3_B/H qualified for automotive applications?
Yes, SMBJ24CAHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the SMBJ5.0A–SMBJ188A datasheet. It undergoes stress testing for temperature cycling, humidity, and surge endurance specific to automotive under-hood and cabin environments. The SMBJ24CAHE3_B/H is approved for use in engine control units, body control modules, and ADAS sensor interfaces where automotive-grade reliability is mandatory.
What is the difference between SMBJ24CAHE3_B/H and SMBJ24CA-E3/52?
SMBJ24CAHE3_B/H and SMBJ24CA-E3/52 share identical electrical parameters (VWM = 24 V, VC = 38.9 V, PPPM = 600 W) and SMB package, but differ in qualification and packaging: SMBJ24CAHE3_B/H is AEC-Q101 qualified and shipped in 7″ tape-and-reel (750 units), while SMBJ24CA-E3/52 is commercial-grade only and uses the same reel format. The SMBJ24CAHE3_B/H includes enhanced traceability and extended temperature validation required for automotive PPAP submissions.
Does SMBJ24CAHE3_B/H have polarity markings on the package?
No, SMBJ24CAHE3_B/H does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMBJ24A), the SMBJ24CAHE3_B/H exhibits symmetrical breakdown behavior - either terminal functions as anode or cathode depending on transient polarity. The device body is unmarked, and orientation during PCB placement has no electrical impact on clamping performance.
What is the thermal resistance of SMBJ24CAHE3_B/H, and how does it affect layout design?
The SMBJ24CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking; for sustained surge duty cycles or elevated ambient temperatures, increasing copper area or adding thermal vias reduces effective RθJA. Layouts using the SMBJ24CAHE3_B/H must follow Vishay's pad dimensions in Document 88392 to ensure rated PPPM and avoid thermal runaway during repetitive transients.
SMBJ24CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ24CAHE3_B/H FAQ
1.How can I place an order for SMBJ24CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24CAHE3_B/H 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_B/H reliable?
The price and inventory of SMBJ24CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ24CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24CAHE3_B/H?
SMBJ24CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24CAHE3_B/H 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_B/H?
For technical support, including SMBJ24CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ24CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ24CAHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ24CAHE3_B/H?
All SMBJ24CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24CAHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for SMBJ24CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24CAHE3_B/H Tags
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