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Vishay General Semiconductor - Diodes Division SMBJ9.0CAHM3_B/H
- Part No.:
- SMBJ9.0CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHM3_B/H.pdf
- Description:
- 600W,9.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ9.0CAHM3_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 a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform), commonly deployed to protect MOSFET gates and sensor I/O in industrial motor drives.
For engineers reviewing the SMBJ9.0CAHM3_B/H datasheet, SMBJ9.0CAHM3_B/H pinout, SMBJ9.0CAHM3_B/H application, or SMBJ9.0CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.71), AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with symmetrical bidirectional conduction-no polarity marking required-and delivers consistent clamping in both directions per ANSI/IEEE C62.35 standards. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01% duty cycle.
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on minimum pad layout) and RθJL = 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = +150 °C. The SMBJ9.0CAHM3_B/H variant uses HM3 suffix, indicating halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; sets system-level overvoltage trip threshold. |
| VBR min/max | 10.0 V / 11.1 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamping voltage during 10/1000 μs surge; defines worst-case voltage seen by protected IC or MOSFET. |
| PPPM | 600 W - Peak pulse power handling capacity; determines survivability against lightning-induced or inductive-switching surges. |
| ID @ VWM | 1.0 μA - Reverse leakage at stand-off voltage; negligible loading on high-impedance sensor or communication lines. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.205" × 0.130" footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating when mounted on 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-suitable for engine control and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant (HM3) | Meets EU RoHS Directive 2011/65/EU and JEDEC JS709E material restrictions; supports green manufacturing and end-of-life recycling requirements. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage stress on downstream components-critical for protecting 12 V logic rails and 3.3 V microcontroller I/O pins. |
| MSL Level 1 (260 °C peak reflow) | Allows single-pass lead-free reflow without moisture sensitivity concerns; eliminates pre-bake requirement in standard SMT lines. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protecting gate drivers and current-sense amplifiers from inductive kickback during IGBT switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across gate-source terminals and analog input lines to limit transient excursions below absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to SiC MOSFET drivers and precision op-amps during 600 V bus switching events. |
Use Scenario: Shielding LIN bus transceivers and MEMS pressure sensors from load-dump and jump-start transients in vehicle body electronics. IC Role / Device Role / Timing Role: Standoff-clamp element connected between signal line and ground, activated within <1 ps to suppress >100 V spikes. Use Value: Maintains signal integrity during ISO 7637-2 Pulse 5a (load dump) tests while meeting AEC-Q100 Grade 2 temperature requirements. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC controllers from induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output rails, coordinated with upstream MOVs and fuses. Use Value: Limits transient overshoot to ≤15.4 V during 10/1000 μs surges, preserving 24 V-rated regulator ICs and optocouplers. |
Use Scenario: Securing microcontroller reset lines and touch-panel ADC inputs against ESD and relay-contact bounce in washing machine mainboards. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) transient suppressor placed directly at connector entry points and IC pins. Use Value: Passes IEC 61000-4-2 ±8 kV contact discharge without latch-up, eliminating field returns due to reset corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CAHE3_B/H | Same electrical specs and SMB package, but uses E3 (non-halogen-free) RoHS-compliant construction without AEC-Q101 qualification. | Lacks automotive qualification; suitable for commercial/industrial use only where halogen content is not restricted. | Select when cost sensitivity outweighs halogen-free or automotive requirements. |
| SMAJ9.0CAHM3 | Lower 400 W PPPM rating, same VWM/VBR/VC, but in smaller SMA (DO-214AC) package with higher RθJA (140 °C/W). | Reduced surge margin and thermal derating; requires tighter layout control and lower ambient temperatures. | Choose only if board space is constrained and peak surge energy remains below 400 W. |
Compared with SMBJ9.0CAHE3_B/H, the SMBJ9.0CAHM3_B/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ9.0CAHM3, it provides 50% higher surge power handling and superior thermal dissipation in the same PCB footprint class.
Availability
SMBJ9.0CAHM3_B/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer appliance control boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ9.0CAHM3_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 robust transient suppression in harsh environments-designed for automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal integrity or thermal stability.
FAQ
What does the "CA" suffix indicate in SMBJ9.0CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration: SMBJ9.0CAHM3_B/H conducts symmetrically in both polarities, making it ideal for AC-coupled signal lines or ungrounded power rails where transient polarity is unpredictable. Unlike unidirectional variants (e.g., SMBJ9.0AHM3_B/H), it has no cathode band marking and exhibits identical VBR and VC in either direction-confirmed per ANSI/IEEE C62.35 test conditions.
Is SMBJ9.0CAHM3_B/H suitable for automotive applications?
Yes-SMBJ9.0CAHM3_B/H carries the HM3 suffix, which indicates halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock, validating its use in engine control units, body control modules, and ADAS sensor front-ends per automotive reliability standards.
How does the clamping voltage of SMBJ9.0CAHM3_B/H compare to its stand-off voltage?
SMBJ9.0CAHM3_B/H has a VWM of 9.0 V and a maximum clamping voltage (VC) of 15.4 V at 39.0 A, yielding a clamping ratio of 1.71. This ratio reflects minimal overvoltage margin during surge events-critical for protecting 12 V logic rails and 3.3 V microcontroller I/O pins without exceeding their absolute maximum ratings during transient suppression.
What is the thermal resistance profile of SMBJ9.0CAHM3_B/H?
SMBJ9.0CAHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads, and a junction-to-lead resistance (RθJL) of 20 °C/W. These values enable sustained operation up to +150 °C junction temperature and support reliable derating above TA = 25 °C per Figure 2 in the Vishay datasheet 88392.
Can SMBJ9.0CAHM3_B/H replace SMBJ9.0A in existing designs?
No-SMBJ9.0CAHM3_B/H is bidirectional, while SMBJ9.0A is unidirectional with a cathode band marking and forward voltage drop (VF ≤ 3.5 V at 50 A). Substituting SMBJ9.0CAHM3_B/H for SMBJ9.0A would eliminate polarity-dependent conduction and alter circuit behavior in DC-biased applications such as power rail clamping; redesign verification is required before interchange.
SMBJ9.0CAHM3_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):
- 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/H FAQ
1.How can I place an order for SMBJ9.0CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_B/H reliable?
The price and inventory of SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHM3_B/H?
SMBJ9.0CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_B/H?
For technical support, including SMBJ9.0CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ9.0CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHM3_B/H?
All SMBJ9.0CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHM3_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 SMBJ9.0CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHM3_B/H Tags
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