My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ150CAHM3_A/I
- Part No.:
- SMBJ150CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CAHM3_A/I.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,793
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ150CAHM3_A/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 standoff voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 2.5 A peak pulse current (IPPM) under 10/1000 µs waveform, and 600 W peak pulse power dissipation - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ150CAHM3_A/I datasheet, SMBJ150CAHM3_A/I pinout, SMBJ150CAHM3_A/I application, or SMBJ150CAHM3_A/I equivalent, this device is evaluated for bidirectional surge suppression in DC power rails, RS-485/RS-232 data lines, and automotive body electronics where AEC-Q101 qualification and halogen-free compliance are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical clamping behavior in forward and reverse directions. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and lightning-induced surges per IEC 61000-4-2/4-5.
The device is rated for TJ = –55 °C to +150 °C operation, meets MSL Level 1 per J-STD-020, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse stand-off voltage before conduction begins; defines safe operating window for protected circuitry. |
| VBR (min/max) | 167 V / 185 V at IT = 1 mA - Breakdown threshold range ensures reliable triggering without premature clamping. |
| VC @ IPPM | 243 V - Clamped voltage during 2.5 A 10/1000 µs transient; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability under standardized surge waveform; validates robustness against repetitive transients. |
| IPPM | 2.5 A - Peak surge current supported at VC; used with PCB trace impedance to estimate let-through energy. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; optimized for automated placement and thermal relief via copper pads. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with cathode/anode roles interchangeable depending on applied voltage polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous voltage polarity; no fixed designation. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing symmetrical clamping path; both terminals equally capable of conducting surge current in either direction. |
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 central office equipment. |
| AEC-Q101 qualified & halogen-free (HM3) | Validates reliability for automotive body control modules and infotainment systems requiring long-term field stability. |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without moisture sensitivity restrictions or baking requirements. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) over temperature and lifetime. |
Applications
| Industrial Sensor Interfaces | Telecom Data Lines |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in factory automation PLCs exposed to relay coil kickback and EMI. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor output and ground to clamp ±2 kV ESD and 1 kV surge events. Use Value: Limits voltage excursion to ≤243 V, preventing damage to 16-bit ADC input stages and maintaining measurement integrity. |
Use Scenario: Surge protection on RS-485 differential pairs in building management systems connected to long outdoor cable runs. IC Role / Device Role / Timing Role: Paired SMBJ150CAHM3_A/I devices (one per line) referenced to common ground to suppress common-mode transients. Use Value: Maintains signal integrity by clamping transients before they exceed receiver common-mode range (–7 V to +12 V). |
| Automotive Body Electronics | DC Power Rail Protection |
|
Use Scenario: Input protection for LIN bus transceivers in door module ECUs subjected to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Bidirectional TVS installed between LIN bus line and chassis ground to absorb coupled transients without polarity biasing. Use Value: Survives 10/1000 µs surges up to 600 W while holding clamped voltage below transceiver absolute maximum ratings. |
Use Scenario: Secondary overvoltage protection on 12 V supply rail feeding microcontrollers in industrial HMIs after primary DC/DC converter filtering. IC Role / Device Role / Timing Role: TVS placed between VIN and GND to shunt transients exceeding 150 V, complementing upstream ceramic capacitor filtering. Use Value: Prevents latch-up or gate oxide rupture in downstream LDOs and MCUs during hot-swap or battery connection events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CAHE3_A/I | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified). | Lacks automotive qualification and halogen-free certification; suitable for consumer or non-automotive industrial use. | Select when AEC-Q101 and halogen-free requirements are not mandated, prioritizing cost-sensitive commercial designs. |
| SMAJ150CAHM3_A/I | Lower 400 W PPPM, same VWM/VBR, SMA (DO-214AC) package - smaller footprint and lower thermal mass. | Reduced surge handling limits suitability to lower-energy environments like portable instrumentation or low-power IoT nodes. | Choose when board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 3 (±8 kV contact). |
Compared with SMBJ150CAHE3_A/I and SMAJ150CAHM3_A/I, SMBJ150CAHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and 600 W surge capacity in the SMB package - making it the only option validated for automotive under-hood deployment with full regulatory compliance.
Availability
SMBJ150CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom data lines, and automotive body electronics requiring stable component supply with guaranteed long-term manufacturability.
Supply support for SMBJ150CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where consistent clamping behavior and long-term stability are mandatory.
FAQ
What is the clamping voltage of SMBJ150CAHM3_A/I at its rated peak pulse current?
The SMBJ150CAHM3_A/I exhibits a maximum clamping voltage (VC) of 243 V when subjected to its rated 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. Designers use this parameter to verify that downstream ICs remain within their absolute maximum voltage ratings during surge conditions. The SMBJ150CAHM3_A/I maintains this clamping performance across its full operating temperature range.
Does SMBJ150CAHM3_A/I require polarity-aware PCB layout?
No - SMBJ150CAHM3_A/I is a bidirectional TVS diode with symmetrical electrical characteristics in both directions, and its SMB (DO-214AA) package carries no polarity marking. Either terminal functions as anode or cathode depending on instantaneous voltage polarity, eliminating orientation constraints during placement. This simplifies layout for AC-coupled or floating signal paths such as RS-485 differential pairs or transformer-isolated interfaces. The SMBJ150CAHM3_A/I datasheet explicitly confirms identical VBR, VC, and IPPM values for both polarities.
How does the HM3 suffix impact the compliance status of SMBJ150CAHM3_A/I?
The HM3 suffix on SMBJ150CAHM3_A/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Unlike base-E3 or -M3 variants, HM3-certified units undergo additional stress testing including temperature cycling, mechanical shock, and high-temperature reverse bias to validate automotive-grade reliability. This makes SMBJ150CAHM3_A/I suitable for under-hood and body-control applications where extended service life and failure mode predictability are critical. The HM3 designation is verified in Vishay's ordering information table and thermal characteristics section.
Can SMBJ150CAHM3_A/I be used in place of unidirectional TVS diodes like SMBJ150A?
No - SMBJ150CAHM3_A/I is strictly bidirectional and cannot replace unidirectional types such as SMBJ150A in circuits requiring forward conduction or DC biasing. Unidirectional devices have a defined cathode band and conduct only in reverse breakdown, whereas SMBJ150CAHM3_A/I conducts symmetrically and lacks polarity marking. Substituting SMBJ150CAHM3_A/I for SMBJ150A in a DC power rail would create unintended conduction paths. Always match device polarity type to circuit topology; SMBJ150CAHM3_A/I is intended for AC, floating, or dual-rail protection scenarios.
What is the thermal resistance from junction to ambient for SMBJ150CAHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for SMBJ150CAHM3_A/I is 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes still air conditions and directly impacts steady-state power derating above 25 °C ambient. For example, at 85 °C ambient, the device's 5.0 W continuous power dissipation rating must be reduced to ~2.0 W. RθJA is specified in the Thermal Characteristics table of Vishay document 88392 and applies identically across all SMBJ5.0A–SMBJ188A variants in SMB package.
SMBJ150CAHM3_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:
- -
- 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_A/I FAQ
1.How can I place an order for SMBJ150CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CAHM3_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 SMBJ150CAHM3_A/I reliable?
The price and inventory of SMBJ150CAHM3_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 SMBJ150CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ150CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CAHM3_A/I?
SMBJ150CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CAHM3_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 SMBJ150CAHM3_A/I?
For technical support, including SMBJ150CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ150CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ150CAHM3_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 SMBJ150CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ150CAHM3_A/I?
All SMBJ150CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CAHM3_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 SMBJ150CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ150CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CAHM3_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 …
