My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ17CAHM3_B/H
- Part No.:
- SMBJ17CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CAHM3_B/H.pdf
- Description:
- 600W,17V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,724
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ17CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤27.6 V at 21.7 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ17CAHM3_B/H datasheet, SMBJ17CAHM3_B/H pinout, SMBJ17CAHM3_B/H application, or SMBJ17CAHM3_B/H equivalent, this part serves as a halogen-free, RoHS-compliant, AEC-Q101-qualified TVS for bidirectional overvoltage protection where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are required.
Technical Context
This device operates symmetrically in both directions due to its bidirectional junction structure, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated silicon junction ensures stable VBR tolerance (±5%) and low incremental surge resistance under repetitive 10/1000 µs pulses at 0.01% duty cycle.
Thermal design relies on RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), with derating applied above TA = 25 °C per Figure 2. The SMB package supports automated placement and withstands peak reflow temperatures up to 260 °C per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - guaranteed breakdown range defining transient initiation threshold |
| VC @ IPPM | 27.6 V at 21.7 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling capability under standardized transient waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensuring minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature supporting operation in harsh industrial environments |
| Package | SMB (DO-214AA) - 0.220" × 0.155" footprint with matte tin-plated leads, J-STD-002 solderable |
Pinout & Package
Two-terminal bidirectional device housed in SMB (DO-214AA) package; no polarity marking. Terminals are symmetrical - either end may connect to protected line or ground reference depending on circuit topology.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals conduct identically during ±voltage surges; no DC bias directionality required |
| Case (exposed metal slug) | Thermal path / mechanical anchor | Not electrically connected; provides thermal dissipation and PCB mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 600 W peak pulse rating (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out with 5 mm² copper pads |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2011/65/EU Annex II updates |
| AEC-Q101 qualified | Validated for automotive subsystems including body control modules and infotainment I/O protection |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning or dry-pack requirements |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
Use Scenario: Protecting RS-485 transceivers against ESD and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential pair (A/B) and ground. Use Value: Limits transient voltage to ≤27.6 V, preventing damage to MAX1487-level transceivers rated for ±15 kV HBM but only ±12 V continuous common-mode. |
Use Scenario: Shielding Ethernet PHY front-end from induced surges on PoE-powered ports. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), shunting residual energy before magnetics. Use Value: Fast <1 ns response captures residual fast-rising edges missed by slower GDTs, reducing let-through energy by >60% vs. unclamped path. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding LIN bus transceivers from load dump and inductive kickback in door module ECUs. IC Role / Device Role / Timing Role: Directly mounted at connector entry point, referenced to chassis ground. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime under -40 °C to +125 °C ambient cycling. |
Use Scenario: Suppressing commutation spikes on BLDC motor gate-drive feedback lines in smart washing machines. IC Role / Device Role / Timing Role: Placed across Hall-effect sensor supply and return near motor controller PCB edge. Use Value: 1.0 µA max leakage avoids false triggering in low-current sensor bias networks while clamping 600 W spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CAHE3_B/H | Same electrical specs; RoHS-compliant but not halogen-free (uses brominated epoxy) | Acceptable for commercial-grade industrial equipment where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is not mandated |
| SMAJ17CAHM3 | Lower PPPM (400 W), larger VBR tolerance (±10%), SMA package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Choose only for space-constrained designs with verified sub-400 W surge exposure and no automotive qualification need |
Compared with SMBJ17CAHM3_B/H, SMBJ17CAHE3_B/H offers identical performance without halogen-free assurance, while SMAJ17CAHM3 trades robustness for size - neither is pin-compatible due to differing package footprints (SMB vs. SMA), requiring PCB redesign.
Availability
SMBJ17CAHM3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and consumer appliance motor drive systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ17CAHM3_B/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 targets high-energy transient suppression in compact surface-mount form factors, engineered for automotive, industrial, and communications infrastructure where AEC-Q101 qualification and halogen-free compliance are mandatory.
FAQ
What is the standoff voltage rating of SMBJ17CAHM3_B/H?
The SMBJ17CAHM3_B/H has a maximum reverse standoff voltage (VWM) of 17 V, meaning it remains non-conductive under normal operating conditions up to this DC or RMS voltage level. This value ensures compatibility with 12 V and 15 V logic and interface buses while providing margin before breakdown at 18.9–20.9 V.
Is SMBJ17CAHM3_B/H suitable for automotive applications?
Yes, SMBJ17CAHM3_B/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), making it suitable for automotive body electronics, infotainment I/O, and LIN bus protection where extended temperature operation (-40 °C to +150 °C) and long-term reliability are required.
What does the "CA" suffix indicate in SMBJ17CAHM3_B/H?
The "CA" suffix in SMBJ17CAHM3_B/H denotes a bidirectional configuration - the device suppresses transients of either polarity symmetrically, unlike unidirectional "A" variants which conduct only in reverse bias. This eliminates the need for polarity-aware layout in AC-coupled or floating signal paths.
How does SMBJ17CAHM3_B/H compare to unidirectional SMBJ17AHM3_B/H?
SMBJ17CAHM3_B/H provides symmetrical clamping for ±transients, whereas SMBJ17AHM3_B/H conducts only during negative excursions relative to cathode. The bidirectional version is essential for protecting differential pairs or AC signals, while the unidirectional variant suits DC-biased rails where polarity is fixed and leakage must be minimized in forward direction.
What is the clamping voltage of SMBJ17CAHM3_B/H at rated surge current?
At its rated peak pulse current of 21.7 A (10/1000 µs waveform), SMBJ17CAHM3_B/H clamps to a maximum of 27.6 V. This clamping voltage defines the upper limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
SMBJ17CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ17CAHM3_B/H FAQ
1.How can I place an order for SMBJ17CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CAHM3_B/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 SMBJ17CAHM3_B/H reliable?
The price and inventory of SMBJ17CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ17CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CAHM3_B/H?
SMBJ17CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CAHM3_B/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 SMBJ17CAHM3_B/H?
For technical support, including SMBJ17CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ17CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ17CAHM3_B/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 SMBJ17CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ17CAHM3_B/H?
All SMBJ17CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CAHM3_B/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 SMBJ17CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ17CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17CAHM3_B/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 …
