My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ9.0CAHM3_B/I
- Part No.:
- SMBJ9.0CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHM3_B/I.pdf
- Description:
- 600W,9.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,047
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ9.0CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ9.0CAHM3_B/I datasheet, SMBJ9.0CAHM3_B/I pinout, SMBJ9.0CAHM3_B/I application, or SMBJ9.0CAHM3_B/I equivalent, key selection criteria include bidirectional clamping symmetry, low VC/VWM ratio (1.71), AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ps), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at 0.01% duty cycle.
The SMBJ9.0CAHM3_B/I exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting operation from –55 °C to +150 °C. It meets MSL Level 1 per J-STD-020 and is rated for peak forward surge current up to 100 A (8.3 ms half-sine, unidirectional only - not applicable here due to bidirectional configuration).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage, min/max) | 10.0 V / 11.1 V at 1 mA - Ensures reliable turn-on during overvoltage events without premature conduction |
| VC (Clamping Voltage) | 15.4 V at 39.0 A IPPM - Limits downstream voltage stress during 600 W transient surges |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients like lightning-induced surges or inductive switch-off spikes |
| IPPM (Peak Pulse Current) | 39.0 A - Peak current handled under 10/1000 µs waveform; determines protection robustness for specific surge profiles |
| TJ max. | +150 °C - Enables use in high-temperature environments such as automotive engine compartments or industrial enclosures |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with standard reflow processes and automated pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias (for unidirectional reference); bidirectional conduction path | One end of the symmetrical avalanche junction; connects to protected line or ground return depending on layout |
| Cathode | Current exit terminal in forward bias (for unidirectional reference); bidirectional conduction path | Other end of the symmetrical avalanche junction; electrically identical to Anode in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients common in industrial motor drives and telecom line interfaces |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for consumer, industrial, and automotive electronics |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against switching transients in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional TVS clamps voltage spikes induced by IGBT/MOSFET turn-off across isolated signal paths. Use Value: Prevents latch-up or damage to precision op-amps and ADC inputs while maintaining signal integrity under 600 W surge conditions. |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between sensor output and microcontroller input pins. Use Value: Maintains functional safety by limiting transient voltage to ≤15.4 V, well below MCU IO absolute maximum ratings. |
| Telecom Line Interface | Consumer Power Adapter EMI Filtering |
Use Scenario: Surge suppression on Ethernet PHY differential pairs or DSL line drivers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Symmetrical clamping element across balanced data lines to preserve common-mode rejection. Use Value: Provides matched clamping in both directions (VBR = 10.0–11.1 V), minimizing skew and distortion during transient events. |
Use Scenario: Secondary-side transient suppression on DC output rails of wall adapters powering USB peripherals. IC Role / Device Role / Timing Role: Low-capacitance TVS placed after bulk capacitance to absorb residual switching noise and ESD. Use Value: Clamps output overvoltage to 15.4 V during fault conditions, preventing damage to connected devices without affecting steady-state regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CAHE3_B/I | RoHS-compliant but not halogen-free; lacks HM3's halogen-free certification | Acceptable for commercial-grade industrial designs where halogen content is unrestricted | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is not mandated |
| SMAJ9.0CAHM3_A/I | Lower 400 W PPPM, larger SMA package (DO-214AC), higher VC = 16.7 V at 24.7 A | Suitable for lower-energy surge environments; less board space efficiency than SMB | Choose only if legacy SMA footprint reuse is required and 600 W rating is not critical |
Compared with SMBJ9.0CAHE3_B/I and SMAJ9.0CAHM3_A/I, the SMBJ9.0CAHM3_B/I delivers superior surge robustness (600 W vs. 400 W), smaller SMB footprint, and halogen-free compliance - making it optimal for next-generation automotive and high-density industrial PCBs requiring AEC-Q101 validation.
Availability
SMBJ9.0CAHM3_B/I is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, and telecom line protection requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMBJ9.0CAHM3_B/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 automotive qualification.
The SMBJ series targets high-reliability transient suppression in harsh environments, with design focus on fast clamping, repeatable surge endurance, and seamless integration into automated SMT manufacturing flows.
FAQ
What does the "CA" suffix indicate in SMBJ9.0CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration, meaning the SMBJ9.0CAHM3_B/I provides symmetrical transient voltage suppression in both polarities - essential for protecting AC-coupled signals, differential buses, or floating nodes where polarity reversal may occur. Unlike unidirectional variants (e.g., SMBJ9.0A), it has no cathode marking and identical VBR characteristics in either direction.
Is SMBJ9.0CAHM3_B/I qualified for automotive applications?
Yes, SMBJ9.0CAHM3_B/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 validated). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making SMBJ9.0CAHM3_B/I suitable for under-hood and body-control module applications meeting automotive reliability standards.
What is the maximum clamping voltage of SMBJ9.0CAHM3_B/I and under what test condition?
The SMBJ9.0CAHM3_B/I has a maximum clamping voltage (VC) of 15.4 V, measured at a peak pulse current (IPPM) of 39.0 A using the standardized 10/1000 µs double-exponential waveform. This value ensures downstream circuitry remains within safe operating limits during high-energy transients, provided PCB layout follows recommended 0.2" × 0.2" copper pad guidelines.
How does the HM3 suffix differ from HE3 in Vishay's SMBJ ordering codes?
The HM3 suffix in SMBJ9.0CAHM3_B/I indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas HE3 denotes RoHS-compliant and AEC-Q101-qualified but not halogen-free. Both meet automotive reliability requirements, but HM3 satisfies stricter environmental mandates (e.g., JEDEC JS709, IEC 61249-2-21), making SMBJ9.0CAHM3_B/I appropriate for green automotive and consumer programs.
Can SMBJ9.0CAHM3_B/I be used in place of a unidirectional TVS like SMBJ9.0A?
No - SMBJ9.0CAHM3_B/I is strictly bidirectional and cannot replace unidirectional devices like SMBJ9.0A in circuits requiring DC bias or polarity-specific clamping (e.g., power rail protection with defined ground reference). Substitution would compromise protection integrity due to lack of cathode-defined conduction direction; always verify circuit topology and transient polarity before selecting SMBJ9.0CAHM3_B/I.
SMBJ9.0CAHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBJ9.0CAHM3_B/I FAQ
1.How can I place an order for SMBJ9.0CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHM3_B/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 SMBJ9.0CAHM3_B/I reliable?
The price and inventory of SMBJ9.0CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHM3_B/I?
SMBJ9.0CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHM3_B/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 SMBJ9.0CAHM3_B/I?
For technical support, including SMBJ9.0CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ9.0CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHM3_B/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 SMBJ9.0CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHM3_B/I?
All SMBJ9.0CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHM3_B/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 SMBJ9.0CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHM3_B/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 …
