My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ24AHM3/H
- Part No.:
- SMBJ24AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ24AHM3/H.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,139
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ24AHM3/H 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 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ24AHM3/H datasheet, SMBJ24AHM3/H pinout, SMBJ24AHM3/H application, or SMBJ24AHM3/H equivalent, this page delivers verified electrical parameters, thermal behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world protection use cases - all aligned with Vishay Document #88392 (Rev. 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, responding within <1 ps to transient overvoltage events. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 24 V), while its MSL Level 1 moisture sensitivity rating supports lead-free reflow up to 260 °C peak.
The device is rated for 150 °C maximum junction temperature and exhibits 0.096 %/°C temperature coefficient of VBR, enabling predictable clamping across automotive and industrial ambient ranges. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, limiting steady-state dissipation to 5.0 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage seen by protected circuit under 600 W 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability per single transient event; validated per IEC 61000-4-5 Level 4 requirements. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush or fault-current immunity in DC power rails. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; completes clamping loop during positive transients. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 24 V rail); conducts avalanche current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surges up to ±2 kV in 2 Ω/12 Ω coupling networks without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ADAS power modules and body control units. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance - supports green manufacturing and export compliance. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), preserving timing margins in microcontroller reset circuits. |
| 100 °C/W RθJA (on 5 mm × 5 mm pads) | Allows thermal design validation using standard PCB layout rules; no heatsink required for intermittent surge duty cycles. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 24 V DC input stage against inductive kickback from relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp negative-going transients and limit positive spikes to ≤38.9 V. Use Value: Prevents latch-up or gate oxide damage in upstream DC-DC controllers (e.g., LM5017) during load dump or switch-off events. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from battery supply transients in door module ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V/24 V rail feeding local LDOs; responds within picoseconds to ISO 16750-2 pulses. Use Value: Maintains functional safety integrity by holding MCU VDD within brown-out threshold during 100 V/50 ms load dump events. |
| Telecom Power Feeds | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input-stage surge suppression on PoE-powered remote radio units exposed to lightning-induced surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Primary clamping device upstream of active OR-ing FETs and DC-DC converters; handles repetitive 600 W pulses. Use Value: Extends field lifetime by absorbing >1000 surges at rated PPPM without parameter drift, per Vishay accelerated life testing. |
Use Scenario: Protecting analog front-end inputs of 4–20 mA current-loop sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 24 V) TVS on sensor supply line to avoid offset errors while suppressing ESD and switching noise. Use Value: Ensures measurement accuracy remains within ±0.1% full scale by preventing transient-induced ADC saturation or op-amp rail collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24AHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM, VBR, and VC specs. | Suitable for commercial-grade industrial equipment where automotive qualification is unnecessary. | Select when cost sensitivity outweighs halogen-free or automotive reliability requirements. |
| SMCJ24A-H | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; identical VWM/VBR but 39.4 V VC at 38.9 A. | Used where higher surge energy absorption is needed, e.g., AC/DC front-end protection or solar charge controllers. | Choose only if board space allows SMC footprint and system-level surge tests exceed 600 W. |
Compared with SMBJ24AHM3/H, SMBJ24AHE3/H offers identical clamping performance at lower cost but excludes halogen-free and AEC-Q101 assurance, while SMCJ24A-H provides 2.5× higher surge capacity in a larger package - making SMBJ24AHM3/H the optimal balance of automotive compliance, compactness, and 600 W protection for space-constrained 24 V systems.
Availability
SMBJ24AHM3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and industrial sensor signal conditioning requiring stable component supply across extended production lifecycles.
Supply support for SMBJ24AHM3/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ24AHM3/H under a 10/1000 µs surge?
The SMBJ24AHM3/H has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per Vishay Document #88392 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMBJ24AHM3/H maintains this clamping performance across its full operating temperature range.
Is SMBJ24AHM3/H qualified for automotive applications?
Yes, SMBJ24AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD - making SMBJ24AHM3/H suitable for under-hood and chassis-mounted automotive electronics such as body control modules and lighting drivers.
What does the "HM3" suffix indicate in SMBJ24AHM3/H?
The "HM3" suffix in SMBJ24AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS only) and HE3 (RoHS + AEC-Q101, not halogen-free). The HM3 version meets JEDEC J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance standards - critical for high-reliability automotive and industrial assembly processes.
Can SMBJ24AHM3/H be used in bidirectional configurations?
No, SMBJ24AHM3/H is a unidirectional TVS diode, as indicated by its "A" suffix and cathode-band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ24CA). Using SMBJ24AHM3/H in bidirectional applications would leave positive transients on the anode side unprotected - always verify polarity alignment and select CA-suffixed parts for AC-coupled or symmetrical surge environments.
What is the thermal resistance of SMBJ24AHM3/H, and how does it affect PCB layout?
SMBJ24AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and guides minimum pad sizing: reducing pad area increases RθJA, risking thermal runaway during repetitive surges. For SMBJ24AHM3/H, no additional heatsinking is required for single-event protection, but layout must maintain specified pad dimensions.
SMBJ24AHM3/H 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:
- 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)
SMBJ24AHM3/H FAQ
1.How can I place an order for SMBJ24AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ24AHM3/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 SMBJ24AHM3/H reliable?
The price and inventory of SMBJ24AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ24AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ24AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ24AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ24AHM3/H?
SMBJ24AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ24AHM3/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 SMBJ24AHM3/H?
For technical support, including SMBJ24AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ24AHM3/H requirements.
6.How does Aetrix verify that SMBJ24AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ24AHM3/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 SMBJ24AHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ24AHM3/H?
All SMBJ24AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ24AHM3/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 SMBJ24AHM3/H part is unused and in its original packaging.
Return procedure for SMBJ24AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ24AHM3/H 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…
