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Vishay General Semiconductor - Diodes Division SMBJ150CAHM3/I
- Part No.:
- SMBJ150CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CAHM3/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,486
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Product details
Overview
SMBJ150CAHM3/I 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 power and signal lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤243 V at 2.5 A peak pulse current - used in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ150CAHM3/I datasheet, SMBJ150CAHM3/I pinout, SMBJ150CAHM3/I application, or SMBJ150CAHM3/I equivalent, this device serves as a halogen-free, RoHS-compliant, AEC-Q101 qualified TVS for bidirectional surge suppression where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (167–185 V), ID ≤1.0 µA at VWM = 150 V, and VC = 243 V at IPPM = 2.5 A. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance.
Thermal design relies on RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The device meets UL 497B recognition (QVGQ2) and is rated for repetitive 0.01% duty cycle surges under JEDEC-standard 10/1000 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 167 V / 185 V at IT = 1 mA - guaranteed avalanche initiation window for reliable transient detection |
| VC @ IPPM | 243 V at 2.5 A - clamped voltage during 10/1000 µs surge, defining worst-case downstream overvoltage stress |
| PPPM | 600 W - peak transient energy absorption capability without failure under standard waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - enables use in high-temperature industrial and automotive under-hood environments |
| Package | SMB (DO-214AA) - 0.205" × 0.130" footprint compatible with automated SMT placement and IPC-7351B land patterns |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative half-cycle; symmetrical with cathode in bidirectional mode |
| Cathode | Transient current entry (positive polarity) | Accepts reverse surge current during positive half-cycle; functionally identical to anode due to bidirectional symmetry |
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) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly laid out with thermal pads |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental compliance mandates including JEDEC J-STD-609A Class 1 moisture sensitivity |
| AEC-Q101 qualified | Validated for automotive electronics applications requiring reliability under temperature cycling, HAST, and mechanical shock |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning, reducing manufacturing complexity and cost |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
|
Use Scenario: Protecting 4–20 mA current-loop sensors in factory automation against ESD and inductive switching transients from solenoids or relays. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor input terminals to clamp ±1 kV ESD (IEC 61000-4-2) and 100 V/µs fast transients. Use Value: Limits voltage excursion to ≤243 V, preventing damage to precision op-amps and ADC front-ends while maintaining <1 µA leakage at 150 V common-mode bias. |
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from lightning-induced surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Paired SMBJ150CAHM3/I devices across differential pair (A–B) to suppress common-mode transients up to 600 W peak. Use Value: Clamps surges within <1 ns while preserving signal integrity up to 10 Mbps due to low junction capacitance (~50 pF at 0 V). |
| Automotive Body Control Module | AC/DC Power Supply Input |
|
Use Scenario: Safeguarding LIN bus nodes in door modules against load dump and jump-start transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional TVS connected between LIN line and chassis ground to absorb 100 V/50 ms pulses without degradation. Use Value: AEC-Q101 qualification ensures 1,000+ thermal cycles and 1,500 hr HTOL lifetime at 150 °C junction temperature under sustained 150 V bias. |
Use Scenario: Secondary-side transient suppression on 120/230 VAC-derived DC rails feeding industrial PLC power supplies. IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to limit voltage overshoot during MOV failure or rectifier recovery spikes. Use Value: Withstands repetitive 600 W surges at 0.01% duty cycle, enabling robust protection without derating in convection-cooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA-E3/52 | RoHS-compliant but not halogen-free; commercial grade only (no AEC-Q101 qualification) | Lacks automotive qualification and high-reliability whisker resistance; suitable for consumer-grade power supplies | Select when AEC-Q101 and halogen-free requirements are not mandated, and cost optimization is prioritized |
| SMCJ150CAHM3 | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass (RθJA = 50 °C/W vs. 100 °C/W) | Better power handling under sustained surge conditions; requires 30% larger PCB area | Choose when system-level surge testing exceeds 600 W single-event limits or board layout allows larger footprint |
Compared with SMBJ150CA-E3/52, the SMBJ150CAHM3/I adds halogen-free construction and AEC-Q101 validation for automotive use; versus SMCJ150CAHM3, it trades thermal performance for space-constrained designs where 600 W peak rating suffices and PCB real estate is limited.
Availability
SMBJ150CAHM3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and AC/DC power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ150CAHM3/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 application-specific performance.
The SMBJ series delivers standardized, high-power TVS protection in compact SMB packages, engineered for industrial, automotive, and telecom systems demanding repeatable clamping, low leakage, and AEC-Q101 compliance.
FAQ
What is the maximum clamping voltage of SMBJ150CAHM3/I at its rated peak pulse current?
The SMBJ150CAHM3/I clamps to a maximum of 243 V at its specified peak pulse current of 2.5 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ150CAHM3/I maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is SMBJ150CAHM3/I suitable for automotive applications?
Yes, SMBJ150CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It passes temperature cycling, highly accelerated stress testing (HAST), and mechanical shock per AEC-Q101 requirements. The SMBJ150CAHM3/I is commonly deployed in body control modules, LIN bus nodes, and infotainment power rails where transient immunity and long-term reliability are mandatory.
How does the bidirectional configuration of SMBJ150CAHM3/I affect its circuit placement?
The SMBJ150CAHM3/I has no polarity marking and functions identically in both directions, allowing direct placement across any two points needing symmetrical overvoltage protection - such as differential signal pairs or AC-coupled lines. Unlike unidirectional TVS diodes, the SMBJ150CAHM3/I eliminates orientation errors during assembly and supports protection schemes where voltage polarity reversal is possible, like in RS-485 or CAN FD bus stubs.
What is the thermal resistance profile of SMBJ150CAHM3/I, and how does it impact PCB layout?
SMBJ150CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. To maintain safe operation below +150 °C junction temperature, designers must ensure adequate copper area and avoid enclosing the SMBJ150CAHM3/I under heat-trapping shields. The SMBJ150CAHM3/I's MSL Level 1 rating permits standard lead-free reflow without prebaking.
Does SMBJ150CAHM3/I meet UL safety certification standards?
Yes, SMBJ150CAHM3/I is Underwriters Laboratories (UL) recognized under file number E136766 for both unidirectional and bidirectional configurations, compliant with UL 497B for primary protector classification. This certification validates its suitability for use in safety-critical surge protection circuits in telecom, industrial, and building automation equipment. The SMBJ150CAHM3/I also meets IEC 61000-4-2/4-4/4-5 immunity test requirements when applied per Vishay's recommended layout guidelines.
SMBJ150CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
SMBJ150CAHM3/I FAQ
1.How can I place an order for SMBJ150CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CAHM3/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 SMBJ150CAHM3/I reliable?
The price and inventory of SMBJ150CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ150CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CAHM3/I?
SMBJ150CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CAHM3/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 SMBJ150CAHM3/I?
For technical support, including SMBJ150CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CAHM3/I requirements.
6.How does Aetrix verify that SMBJ150CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ150CAHM3/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 SMBJ150CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ150CAHM3/I?
All SMBJ150CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CAHM3/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 SMBJ150CAHM3/I part is unused and in its original packaging.
Return procedure for SMBJ150CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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