My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC24AHM3/H
- Part No.:
- 1.5SMC24AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC24AHM3/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,608
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC24AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 24 V breakdown voltage (VBR = 22.8–25.2 V at IT = 1.0 mA), 20.5 V stand-off voltage (VWM), 33.2 V maximum clamping voltage (VC) at 45.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial motor drives, and telecom interface circuits.
For engineers reviewing the 1.5SMC24AHM3/H datasheet, 1.5SMC24AHM3/H pinout, 1.5SMC24AHM3/H application, or 1.5SMC24AHM3/H equivalent, key selection considerations include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VBR, limiting transient energy to protected downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMC package supports automated placement and meets MSL Level 1 reflow requirements (260 °C peak).
The 1.5SMC24AHM3/H is rated for -65 °C to +150 °C operating junction temperature, delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient, and sustains 200 A non-repetitive forward surge current (8.3 ms half-sine). Its low incremental surge resistance enables effective suppression of lightning-induced surges and inductive switching transients in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1.0 mA test current - defines precise clamping onset threshold under standardized conditions |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 33.2 V at 45.2 A - peak clamped voltage during 1500 W transient, directly limiting stress on downstream ICs |
| PPPM | 1500 W with 10/1000 µs waveform - quantifies surge energy handling capability per industry-standard pulse profile |
| IFSM | 200 A (8.3 ms half-sine) - supports robust immunity against repetitive inductive turn-off spikes in motor control |
| TJ max. | +150 °C - enables reliable operation in under-hood automotive and high-temperature industrial environments |
| RθJA | 75 °C/W - determines thermal rise above ambient under sustained power dissipation; requires appropriate PCB copper area |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side of protected line; forms cathode-to-anode conduction path during overvoltage |
| Cathode | Clamping output / Surge return path | Marked with band; ties to higher-potential rail (e.g., VCC or signal line); sinks transient current to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial electronics manufacturing |
| 1500 W peak pulse power | Withstands severe transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime |
| MSL Level 1 moisture sensitivity | Allows standard reflow without baking; compatible with high-volume SMT assembly processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before they reach LDOs and microcontrollers. Use Value: Limits clamped voltage to 33.2 V, well below typical 36 V absolute maximum ratings of downstream regulators and MCUs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog input cards exposed to field wiring transients. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt induced surges on twisted-pair signal lines before reaching instrumentation amplifiers. Use Value: Sub-1 ns response ensures clamping occurs before sensitive front-end op-amps are damaged by fast-rising EFT or lightning-coupled noise. |
| Telecom DC Power Feeding | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing 48 V DC power feeding lines in PoE-powered remote radio units (RRUs) and base station backhaul equipment. IC Role / Device Role / Timing Role: TVS installed across primary DC input to absorb longitudinal surges from outdoor cable runs and grounding mismatches. Use Value: 1500 W rating handles repeated 10/1000 µs surges up to 4 kV per IEC 61000-4-5 Level 4 without degradation. |
Use Scenario: Shielding isolated gate drivers (e.g., SiC MOSFET drivers) from Miller-induced voltage spikes during high-dV/dt switching in inverters. IC Role / Device Role / Timing Role: TVS placed across driver output (HO/LO) and ground to clamp overshoot exceeding VGS abs max. Use Value: Low clamping voltage (33.2 V) prevents gate oxide breakdown in wide-bandgap devices rated for ±20 V VGS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-M3/57T | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Suitable for space-constrained consumer or low-energy industrial ports; not recommended for automotive load dump | Select when board area is critical and surge energy is ≤600 W; verify thermal margin with reduced copper pad area |
| 1.5SMC24AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant commercial grade (no AEC-Q101 qualification) | Applicable in non-automotive industrial or telecom systems where automotive reliability certification is not required | Choose for cost-sensitive designs where AEC-Q101 is unnecessary; identical layout and clamping behavior |
Compared with 1.5SMC24AHM3/H, the SMBJ24A-M3/57T offers smaller size but reduced surge capacity and thermal robustness, while the 1.5SMC24AHE3_A/H matches all electrical and mechanical properties except automotive qualification - making it a direct drop-in for non-automotive use cases.
Availability
1.5SMC24AHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor control, and telecom infrastructure requiring stable component supply with AEC-Q101 assurance, halogen-free compliance, and high-energy transient immunity.
Supply support for 1.5SMC24AHM3/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 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems needing certified, repeatable clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of the 1.5SMC24AHM3/H under maximum surge conditions?
The 1.5SMC24AHM3/H exhibits a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45.2 A (10/1000 µs waveform). This value is measured per standard test conditions and ensures downstream components see limited overvoltage stress during transient events. The 1.5SMC24AHM3/H maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC24AHM3/H suitable for automotive applications?
Yes, the 1.5SMC24AHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay documentation. It is specifically intended for automotive use cases including powertrain, chassis, and body electronics where reliability under temperature cycling, humidity, and surge stress is mandatory. The 1.5SMC24AHM3/H meets all applicable stress tests defined in the AEC-Q101 standard.
What does the "HM3" suffix indicate in 1.5SMC24AHM3/H?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" specifies the tape-and-reel packaging format (7-inch reel, 850 units), while "M3" confirms halogen-free molding compound and lead finish. This distinguishes the 1.5SMC24AHM3/H from commercial-grade variants like HE3 and ensures compliance with automotive environmental and reliability requirements.
How does the 1.5SMC24AHM3/H compare to bidirectional TVS diodes?
The 1.5SMC24AHM3/H is unidirectional and must be oriented with cathode toward the positive rail; it conducts only during reverse overvoltage. Bidirectional variants (e.g., 1.5SMC24CA) protect AC or floating signals without polarity concern but exhibit symmetric clamping in both directions. The 1.5SMC24AHM3/H offers tighter VBR tolerance and lower leakage in DC applications where polarity is fixed.
What PCB layout guidance applies to the 1.5SMC24AHM3/H?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated thermal and surge performance. Trace inductance must be minimized - short, wide traces directly connecting anode and cathode to protected nodes and ground/power planes. The 1.5SMC24AHM3/H thermal resistance (RθJA = 75 °C/W) assumes this pad layout; reduced copper area increases junction temperature and degrades surge capability.
1.5SMC24AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC24AHM3/H FAQ
1.How can I place an order for 1.5SMC24AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC24AHM3/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 1.5SMC24AHM3/H reliable?
The price and inventory of 1.5SMC24AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC24AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC24AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC24AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC24AHM3/H?
1.5SMC24AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC24AHM3/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 1.5SMC24AHM3/H?
For technical support, including 1.5SMC24AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC24AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC24AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC24AHM3/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 1.5SMC24AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC24AHM3/H?
All 1.5SMC24AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC24AHM3/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 1.5SMC24AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC24AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC24AHM3/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
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 …
