My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ24AHE3/5B
;;2.jpg)
- Part No.:
- SMBJ24AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24AHE3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,646
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ24AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the SMBJ24AHE3/5B datasheet, SMBJ24AHE3/5B pinout, SMBJ24AHE3/5B application, or SMBJ24AHE3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs surge, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds its breakdown threshold (VBR). Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), enabling protection against ESD and inductive switching spikes in DC power rails and low-speed signal paths.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2. With 20 °C/W junction-to-lead thermal resistance and MSL Level 1 moisture sensitivity, it supports reflow soldering at peak 260 °C without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry. |
| VBR (min/max) | 26.7 V / 29.5 V at IT = 1 mA - Breakdown onset range; ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against IEC 61000-4-5 Level 4 surges (4 kV line-earth). |
| ID @ VWM | ≤1.0 µA - Reverse leakage at stand-off voltage; critical for low-power sensor and battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial enclosures. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB thermal design requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| 600 W peak pulse power (10/1000 µs) | Supports repeated surge immunity per IEC 61000-4-5 without degradation; suitable for 24 V industrial bus protection. |
| Low incremental surge resistance | Enables tight clamping (VC/VBR ratio = 1.46) and minimal overshoot during fast transients like relay coil flyback. |
| MSL Level 1, 260 °C peak reflow | Eliminates need for moisture preconditioning; compatible with standard lead-free SMT assembly processes. |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime; prevents parametric drift in humid or high-bias environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 24 V supply line in engine control unit exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤38.9 V, preventing damage to 40 V-rated input MOSFETs and maintaining system uptime. |
Use Scenario: Analog output line of pressure sensor in factory automation PLC module subjected to cable ESD and nearby motor switching noise. IC Role / Device Role / Timing Role: TVS diode mounted at connector entry point, shunting transients to chassis ground before signal conditioning amplifier. Use Value: Sub-1 ns response and <1 µA leakage preserve signal integrity and offset accuracy in 16-bit ADC front-end. |
| Telecom DC Power Input Protection | Consumer Device USB VBUS Line Clamp |
|
Use Scenario: -48 V telecom rectifier output feeding PoE midspan equipment, vulnerable to lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Primary clamping device on input bulk capacitor rail, coordinated with upstream GDT and series impedance. Use Value: 600 W rating handles multiple 10/1000 µs surges; AEC-Q101 qualification ensures long-term field reliability in unattended sites. |
Use Scenario: VBUS line in portable medical monitor with USB-C charging port, requiring ESD immunity per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Secondary TVS placed after USB interface IC, acting as last-line defense against coupling through data lines. Use Value: 24 V VWM avoids conduction during normal 5 V operation; 38.9 V VC prevents latch-up in USB PHY transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Direct substitution if halogen-free requirement applies; same footprint, thermal, and clamping behavior. |
| SMAJ24AHE3/A | Lower 400 W PPPM rating, SMA (DO-214AC) package, 130 °C TJ max., non-AEC-Q101. | Limited to commercial-grade consumer or non-safety-critical industrial use; insufficient for automotive or harsh-environment deployment. | Only acceptable where cost is prioritized over surge margin and automotive qualification is not required. |
Compared with SMBJ24AHE3/5B, the HM3/5B alternative adds halogen-free compliance without trade-offs, while the SMAJ24AHE3/A reduces surge capability and reliability grade-making SMBJ24AHE3/5B the optimal choice for AEC-Q101–mandated designs requiring full 600 W immunity.
Availability
SMBJ24AHE3/5B is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, traceable lot control, and long-term lifecycle support.
Supply support for SMBJ24AHE3/5B 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, precision, and automotive-grade validation.
The SMBJ series targets high-energy transient suppression in demanding environments, engineered specifically for AEC-Q101 compliance, low-clamp-voltage performance, and seamless integration into automated SMT manufacturing lines.
FAQ
What is the maximum clamping voltage of SMBJ24AHE3/5B under a 10/1000 µs surge?
The SMBJ24AHE3/5B has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current of 15.4 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88392 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMBJ24AHE3/5B qualified for automotive applications?
Yes, SMBJ24AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix and footnote (1) in the Vishay datasheet 88392. This qualification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD robustness, making SMBJ24AHE3/5B suitable for under-hood and body-control module deployments.
What does the "5B" in SMBJ24AHE3/5B indicate?
The "5B" denotes the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-volume automated pick-and-place assembly and is distinct from the "52" code (7-inch reel, 750 units) used in lower-volume or prototyping scenarios.
How does SMBJ24AHE3/5B differ from bidirectional variants like SMBJ24CA?
SMBJ24AHE3/5B is unidirectional and conducts only in reverse bias, with polarity marked by a cathode band. In contrast, SMBJ24CA is bidirectional, symmetrical in both directions, and lacks polarity marking. The unidirectional SMBJ24AHE3/5B provides tighter leakage control (<1.0 µA) and is preferred for DC power rail protection, whereas bidirectional types suit AC or differential signal lines.
What is the thermal resistance from junction to ambient for SMBJ24AHE3/5B?
The typical junction-to-ambient thermal resistance (RθJA) of SMBJ24AHE3/5B is 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table of datasheet 88392. This value guides PCB layout decisions for sustained power dissipation up to 5.0 W.
SMBJ24AHE3/5B 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ24AHE3/5B FAQ
1.How can I place an order for SMBJ24AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24AHE3/5B 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 SMBJ24AHE3/5B reliable?
The price and inventory of SMBJ24AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ24AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24AHE3/5B?
SMBJ24AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24AHE3/5B 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 SMBJ24AHE3/5B?
For technical support, including SMBJ24AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24AHE3/5B requirements.
6.How does Aetrix verify that SMBJ24AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ24AHE3/5B 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 SMBJ24AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ24AHE3/5B?
All SMBJ24AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24AHE3/5B, 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 SMBJ24AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ24AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24AHE3/5B 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
