My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ17AHM3_A/I
- Part No.:
- SMBJ17AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHM3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,510
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ17AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V clamping voltage (VC) at 21.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives.
For engineers reviewing the SMBJ17AHM3_A/I datasheet, SMBJ17AHM3_A/I pinout, SMBJ17AHM3_A/I application, or SMBJ17AHM3_A/I equivalent, this device is selected for high-reliability surge suppression where low clamping ratio, AEC-Q101 qualification, halogen-free RoHS compliance, and stable thermal performance up to 150 °C junction temperature are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for fast response (<1 ps) and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance requires minimum 5.0 mm × 5.0 mm copper pads per terminal for rated 600 W pulse handling.
The SMBJ17AHM3_A/I is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports ≤1.0 µA reverse leakage at 17 V, and exhibits +0.090 %/°C temperature coefficient of VBR, enabling predictable voltage drift across -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit on protected line |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - verified breakdown threshold range; ensures reliable triggering above VWM with margin |
| VC @ IPPM | 27.6 V at 21.7 A - clamped voltage during 600 W transient; determines maximum stress imposed on downstream ICs |
| PPPM | 600 W - peak pulse power with 10/1000 µs waveform; defines energy-handling capability for lightning/inductive-spike events |
| IFSM | 100 A - single half-sine surge rating (8.3 ms); supports high-energy fault conditions without bond-wire failure |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.21 mm × 4.06 mm body and 2.20 mm height; compatible with automated pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked by cathode band on one end. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; forms clamping path when cathode is at higher potential |
| Cathode | Protected line input | Connected to line being safeguarded (e.g., 12 V rail, RS-485 bus); band-marked end indicates polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS sensors |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JEDEC J-STD-20 requirements; eliminates brominated flame retardants without compromising UL 94 V-0 flammability rating |
| 600 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) with margin; supports repeated transients at 0.01% duty cycle |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces downstream of protection stage |
| Glass-passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term parameter stability under humidity and thermal stress |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients before they reach MCU power pins. Use Value: Limits voltage excursion to ≤27.6 V during 100 A surge events, preventing latch-up or oxide breakdown in 3.3 V/5 V logic circuits. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply inputs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V sensor feed lines, triggered only during >17 V transients while remaining transparent during normal operation. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure uninterrupted function in under-dash environments with ambient temperatures up to 105 °C. |
| Telecom Power Interfaces | Consumer Appliance Control Boards |
|
Use Scenario: Input-stage protection for AC/DC adapters and PoE-powered devices subjected to lightning-induced surges on primary-side DC rails. IC Role / Device Role / Timing Role: Primary-side TVS on bulk capacitor output, absorbing energy from coupled surges before reaching secondary-side regulators. Use Value: 600 W pulse rating and 27.6 V clamping enable compliance with ITU-T K.20 and IEC 61000-4-5 standards for telecom infrastructure. |
Use Scenario: Overvoltage safeguard for microcontroller reset lines and front-panel button inputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) unidirectional suppressor on 3.3 V or 5 V control signals, preserving signal integrity during standby. Use Value: Halogen-free HM3 construction meets regional environmental mandates for white goods sold in EU and Japan without sacrificing surge immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHE3_A/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen content is unrestricted; lower cost in commercial-grade designs | Select when environmental compliance beyond RoHS is not mandated and cost sensitivity outweighs halogen-free requirement |
| SMBJ17CAHM3_A/I | Bidirectional variant with symmetric clamping; VBR = 18.9–20.9 V, VC = 27.6 V, same package and power rating | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN) where polarity reversal occurs | Choose only when bidirectional protection is needed; not a drop-in replacement due to polarity and circuit topology differences |
Compared with SMBJ17AHM3_A/I, the HE3 variant trades halogen-free status for cost efficiency in non-automotive settings, while the CAHM3 variant adds bidirectional symmetry at the expense of unidirectional optimization - making SMBJ17AHM3_A/I the preferred choice for grounded DC rail protection with strict environmental and automotive qualifications.
Availability
SMBJ17AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power interfaces requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBJ17AHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and application-specific validation.
The SMBJ series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ17AHM3_A/I at its rated peak pulse current?
The SMBJ17AHM3_A/I has a maximum clamping voltage (VC) of 27.6 V at its specified peak pulse current (IPPM) of 21.7 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is confirmed in Vishay's datasheet revision 09-Jan-2024, page 2. The SMBJ17AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ17AHM3_A/I suitable for automotive applications?
Yes, SMBJ17AHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HM3_X (where "X" = revision A). It meets stress test requirements for temperature cycling, high-temperature reverse bias, and mechanical shock - validated for under-hood and cabin-mounted ECUs. The SMBJ17AHM3_A/I also supports junction temperatures up to +150 °C, aligning with automotive thermal design constraints.
How does the HM3 suffix differ from E3 or HE3 in SMBJ17AHM3_A/I?
The HM3 suffix in SMBJ17AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinct from E3 (RoHS only, commercial grade), HE3 (RoHS + AEC-Q101, but not halogen-free), and M3 (halogen-free + RoHS, no AEC-Q101). All share identical electrical parameters and SMB package, but HM3 satisfies stricter environmental and automotive reliability mandates. The SMBJ17AHM3_A/I is the only variant meeting all three criteria simultaneously.
What is the reverse leakage current specification for SMBJ17AHM3_A/I at rated standoff voltage?
SMBJ17AHM3_A/I specifies a maximum reverse leakage current (ID) of 1.0 µA at its rated standoff voltage (VWM) of 17 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss in always-on circuits and preserves signal integrity on high-impedance nodes. The SMBJ17AHM3_A/I maintains ≤5.0 µA leakage up to 125 °C, as verified in Vishay's thermal derating curves.
Can SMBJ17AHM3_A/I be used in bidirectional signal protection applications?
No - SMBJ17AHM3_A/I is strictly unidirectional, with polarity indicated by a cathode band. For bidirectional protection (e.g., AC lines, differential buses), the SMBJ17CAHM3_A/I variant must be used. Attempting to deploy SMBJ17AHM3_A/I in bidirectional configurations risks catastrophic failure during reverse-polarity transients. The SMBJ17AHM3_A/I datasheet explicitly restricts usage to unidirectional DC rail and signal line protection.
SMBJ17AHM3_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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
SMBJ17AHM3_A/I FAQ
1.How can I place an order for SMBJ17AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHM3_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 SMBJ17AHM3_A/I reliable?
The price and inventory of SMBJ17AHM3_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 SMBJ17AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ17AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHM3_A/I?
SMBJ17AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHM3_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 SMBJ17AHM3_A/I?
For technical support, including SMBJ17AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ17AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHM3_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 SMBJ17AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ17AHM3_A/I?
All SMBJ17AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHM3_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 SMBJ17AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ17AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17AHM3_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 …
