My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ15AHM3_A/I
- Part No.:
- SMBJ15AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AHM3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,440
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ15AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V clamping voltage (VC) at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive infotainment power supplies to safeguard microcontrollers against load dump transients.
For engineers reviewing the SMBJ15AHM3_A/I datasheet, SMBJ15AHM3_A/I pinout, SMBJ15AHM3_A/I application, or SMBJ15AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and real-world use cases in industrial sensor interfaces and telecom line cards where fast response (<1 ns) and low clamping ratio (VC/VWM = 1.63) are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 16.7–18.5 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<1.0 µA at 15 V) and repeatable clamping performance under repetitive surge conditions (0.01% duty cycle).
Designed for PCB-level protection, it leverages the SMB package's low thermal resistance (RθJL = 20 °C/W) and MSL Level 1 moisture sensitivity rating (peak reflow 260 °C), enabling compatibility with standard SMT assembly processes without pre-baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above 12 V nominal rail. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on before system damage. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to <25 V. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports automotive ISO 7637-2 Pulse 5a/b energy levels. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at 15 V; negligible power loss and no measurable impact on battery-powered sensor nodes. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; informs heatsinking requirements for sustained surge duty. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-indicated by band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; defines polarity for unidirectional clamping action. |
| Cathode | Protected line input terminal | Connected to protected node (e.g., 12 V rail); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power domains. |
| 600 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 load dump (Pulse 5) without degradation. |
| Clamping ratio VC/VWM = 1.63 | Minimizes overvoltage overshoot relative to working voltage - critical for 3.3 V/5 V logic interface protection. |
| MSL Level 1 | Zero bake requirement before reflow; compatible with standard SMT lines using peak 260 °C profile. |
| Halogen-free & RoHS-compliant | Meets environmental compliance for EU and global OEM supply chains (HM3 suffix). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 12 V power input to infotainment head unit against alternator load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed upstream of DC/DC converter input. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to buck controller ICs rated for 28 V absolute maximum. |
Use Scenario: Shielding RS-485 transceiver I/O pins from ESD and inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed directly at connector entry point. Use Value: Sub-1 ns response time clamps 8 kV contact ESD events before transceiver input stages latch up. |
| Telecom Line Card Surge Suppression | Consumer USB Power Input Protection |
|
Use Scenario: Safeguarding PoE-powered Ethernet switch ports from lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Paired unidirectional SMBJ15AHM3_A/I devices per differential pair, referenced to common-mode ground. Use Value: 600 W rating handles IEC 61000-4-5 Combination Wave (10/700 µs) surges up to 4 kV without failure. |
Use Scenario: Guarding USB-C VBUS input of portable speaker against adapter overvoltage and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated TVS between VBUS and GND, sized for 15 V nominal input with 20 % tolerance. Use Value: 1.0 µA leakage at 15 V avoids battery drain in standby mode while maintaining fast clamping response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3_A/I | RoHS-compliant commercial grade (E3), not halogen-free; lacks AEC-Q101 qualification. | Approved for industrial/commercial designs but excluded from automotive Tier 1 BOMs requiring AEC-Q101. | Select SMBJ15AHM3_A/I when halogen-free and automotive qualification are mandatory; choose SMBJ15AHE3_A/I for cost-sensitive non-automotive use. |
| SMBJ15CAHM3_A/I | Bidirectional variant; symmetric VBR (16.7–18.5 V) in both polarities; same clamping and power ratings. | Required for AC-coupled or floating signal lines (e.g., CAN bus, audio inputs) where polarity reversal may occur. | Use SMBJ15AHM3_A/I for DC rails with defined polarity; select SMBJ15CAHM3_A/I only when bidirectional clamping is functionally required. |
Compared with SMBJ15AHE3_A/I, SMBJ15AHM3_A/I adds halogen-free construction and AEC-Q101 validation - essential for automotive deployment - while SMBJ15CAHM3_A/I provides polarity-agnostic protection at identical power handling, making it unsuitable as a drop-in replacement for unidirectional DC applications.
Availability
SMBJ15AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ15AHM3_A/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMBJ series targets board-level transient protection across automotive, industrial, and communications markets, engineered for high surge immunity, low clamping, and seamless SMT integration.
FAQ
What is the clamping voltage of SMBJ15AHM3_A/I at its rated peak pulse current?
The SMBJ15AHM3_A/I has a maximum clamping voltage (VC) of 24.4 V at 24.6 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per JEDEC standards and ensures downstream circuitry remains within safe voltage limits during surge events. The SMBJ15AHM3_A/I achieves this with low incremental surge resistance, contributing to consistent clamping performance across multiple transients.
Is SMBJ15AHM3_A/I qualified for automotive applications?
Yes, SMBJ15AHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure (HM3 suffix with "H" denoting AEC-Q101 qualification). This certification covers stress testing for temperature cycling, humidity bias, and surge endurance - validating its use in engine control, body electronics, and infotainment systems. The SMBJ15AHM3_A/I meets all requirements for under-hood and cabin-mounted modules.
What does the "HM3" suffix indicate in SMBJ15AHM3_A/I?
The "HM3" suffix in SMBJ15AHM3_A/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" denotes automotive qualification, "M3" indicates halogen-free molding compound and lead finish, and "_A/I" refers to packaging configuration (13" tape-and-reel, 3200 units per reel). This distinguishes it from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS, non-halogen-free) variants.
How does SMBJ15AHM3_A/I compare to SMBJ15AHE3_A/I in terms of reliability?
SMBJ15AHM3_A/I offers higher reliability in harsh environments due to its halogen-free compound and AEC-Q101 qualification - including extended temperature cycling and accelerated life testing beyond commercial-grade SMBJ15AHE3_A/I. Both share identical electrical specs (VWM, VC, PPPM), but SMBJ15AHM3_A/I is validated for 150 °C continuous operation and automotive vibration profiles, making it the preferred choice for mission-critical deployments.
Can SMBJ15AHM3_A/I be used in bidirectional signal protection?
No, SMBJ15AHM3_A/I is strictly unidirectional and must be installed with correct polarity (cathode toward protected line). For bidirectional protection - such as on AC-coupled data lines or floating sensors - the SMBJ15CAHM3_A/I variant is required. Using SMBJ15AHM3_A/I in reverse-biased configurations risks permanent breakdown and failure, as it lacks symmetrical avalanche characteristics in the forward direction.
SMBJ15AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- 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)
SMBJ15AHM3_A/I FAQ
1.How can I place an order for SMBJ15AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AHM3_A/I 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 SMBJ15AHM3_A/I reliable?
The price and inventory of SMBJ15AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ15AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AHM3_A/I?
SMBJ15AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AHM3_A/I 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 SMBJ15AHM3_A/I?
For technical support, including SMBJ15AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ15AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ15AHM3_A/I 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 SMBJ15AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ15AHM3_A/I?
All SMBJ15AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AHM3_A/I, 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 SMBJ15AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ15AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15AHM3_A/I 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 …
