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Vishay General Semiconductor - Diodes Division SMBJ160A-M3/52
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- Part No.:
- SMBJ160A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160A-M3/52.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,408
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Product details
Overview
SMBJ160A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 160 V stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1.0 mA test current, 259 V maximum clamping voltage (VC) at 2.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ160A-M3/52 datasheet, SMBJ160A-M3/52 pinout, SMBJ160A-M3/52 application, or SMBJ160A-M3/52 equivalent, this device is selected for high-reliability industrial power supply input protection, automotive body control module surge immunity, and telecom line interface transient suppression where precise 160 V standoff and low clamping ratio are critical.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (178–197 V), clamping transients to ≤259 V at 2.3 A. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for PCB-level protection, it complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) standards when applied with appropriate layout-mounted on 5.0 mm × 5.0 mm copper pads per terminal, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 160 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 178–197 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on above nominal system voltage. |
| VC (Clamping Voltage) | 259 V at IPPM = 2.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; enables downstream IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 µs surge without failure; validated per Fig. 1 derating curves. |
| IPPM (Peak Pulse Current) | 2.3 A - Maximum non-repetitive surge current handled at rated clamping; directly derived from VC and PPPM. |
| TJmax | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with cathode band marking; compatible with automated placement and reflow soldering (MSL Level 1, 260 °C peak). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode (banded end) | Reverse voltage sensing / Clamping node | Connected to protected line (e.g., 160 V DC rail); initiates avalanche conduction when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 160 V systems without cascaded staging. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream MOSFETs or controllers; improves system-level surge margin by ≥15 % vs. higher-ratio TVS. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and automotive ELV directive; suitable for green manufacturing programs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles (peak 260 °C); eliminates baking requirement and reduces assembly risk. |
| 150 °C maximum junction temperature | Supports operation in engine bay, industrial PLC backplanes, and telecom rectifier modules without thermal derating below 85 °C ambient. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Power Rail |
|---|---|
|
Use Scenario: 160 V DC input stage of DIN-rail mounted programmable logic controller (PLC) power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +160 V rail and chassis ground to clamp surges before they reach primary-side controller IC and bulk capacitor. Use Value: Limits transient voltage to ≤259 V, preventing gate oxide rupture in 200 V-rated MOSFETs and extending electrolytic capacitor lifetime by reducing RMS ripple stress. |
Use Scenario: 12 V–160 V dual-range battery monitoring circuit in BCM subjected to ISO 7637-2 Pulse 5a (load dump up to 170 V). IC Role / Device Role / Timing Role: Standoff-clamp TVS on high-side sense line feeding microcontroller ADC input; cathode tied to sense node, anode to ground. Use Value: Maintains <1 µs response time to clamp overshoot within 100 ns of event onset, preserving ADC sampling integrity and avoiding firmware reset triggers. |
| Telecom Rectifier Output Stage | Renewable Energy Charge Controller Interface |
|
Use Scenario: Output of -48 V telecom rectifier feeding distributed power architecture, subject to lightning-induced common-mode surges on DC distribution bus. IC Role / Device Role / Timing Role: Unidirectional TVS installed across output terminals (cathode to +VOUT, anode to GND) to suppress differential-mode transients exceeding 160 V. Use Value: Withstands 600 W pulses without parametric shift, ensuring uninterrupted service during repeated surge events in central office environments. |
Use Scenario: PV array string monitoring interface in solar charge controller, where open-circuit voltage reaches 160 V under STC and lightning coupling induces fast-rising transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on string voltage input to isolation amplifier; positioned upstream of ESD diode array and RC filter. Use Value: Provides first-line defense with 2.3 A IPPM, reducing energy passed to secondary protection by >85 % and eliminating need for external series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160A-E3/52 | Same electrical specs, but RoHS-compliant with lead finish containing lead (Pb); not halogen-free. | Acceptable for commercial-grade industrial equipment where halogen-free mandate does not apply. | Select when cost sensitivity outweighs green compliance requirements and Pb content is permitted per customer specification. |
| SMBJ160AHM3_X | AEC-Q101 qualified variant with identical VWM, VBR, and VC; adds automotive qualification testing (HTOL, TC, UHAST). | Required for automotive powertrain and chassis applications; supports PPAP documentation and zero-defect traceability. | Choose for automotive OEM designs needing formal qualification evidence; otherwise, SMBJ160A-M3/52 suffices for industrial use. |
Compared with SMBJ160A-E3/52, the M3 version adds halogen-free compliance without sacrificing performance; compared with SMBJ160AHM3_X, it omits AEC-Q101 validation-making it optimal for cost-sensitive, non-automotive applications requiring green materials and proven 600 W surge capability.
Availability
SMBJ160A-M3/52 is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive body control module (BCM) power rail hardening, and telecom rectifier output stage surge suppression requiring stable component supply, consistent M3-grade material compliance, and full traceability.
Supply support for SMBJ160A-M3/52 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial automation, telecom infrastructure, and automotive electronics where robustness and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ160A-M3/52 under a 10/1000 µs surge?
The SMBJ160A-M3/52 has a maximum clamping voltage (VC) of 259 V when subjected to its rated peak pulse current of 2.3 A with a 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88392 and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SMBJ160A-M3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) with minimal drift.
Is SMBJ160A-M3/52 suitable for automotive applications?
The SMBJ160A-M3/52 is halogen-free and RoHS-compliant but not AEC-Q101 qualified. It may be used in non-safety-critical automotive subsystems such as infotainment power rails or lighting control modules where formal qualification is not mandated. For body control modules, ADAS power domains, or any application requiring PPAP or automotive reliability validation, the AEC-Q101-qualified variant SMBJ160AHM3_X must be selected instead of SMBJ160A-M3/52.
What is the thermal resistance of SMBJ160A-M3/52, and how does it affect PCB layout?
The SMBJ160A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 5.0 mm × 5.0 mm copper pads per terminal. To maintain safe operation at full 600 W pulse rating, PCB layout must provide minimum recommended pad area and avoid excessive trace length or narrow routing between the SMBJ160A-M3/52 and ground plane. Thermal vias under pads further reduce RθJA in high-reliability designs.
How does the M3 suffix differ from E3 in SMBJ160A-M3/52?
The M3 suffix in SMBJ160A-M3/52 indicates halogen-free, RoHS-compliant construction with matte tin plating meeting JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS-compliant construction that permits lead (Pb) in the termination finish. Both share identical electrical specifications and SMB package dimensions, but only M3 satisfies strict halogen-free mandates (e.g., IEC 61249-2-21) required in aerospace, medical, and green-certified industrial products. SMBJ160A-M3/52 is not a drop-in replacement for E3 in Pb-free-only processes due to differing material declarations.
Can SMBJ160A-M3/52 be used in bidirectional configurations?
No-SMBJ160A-M3/52 is strictly a unidirectional TVS diode, identified by its cathode band marking and specified breakdown behavior only in reverse bias. For bidirectional protection at the same 160 V standoff level, the correct part is SMBJ160CA-M3/52 (with CA suffix), which provides symmetrical clamping in both polarities. Using SMBJ160A-M3/52 in bidirectional applications risks forward conduction damage during positive transients and invalidates all published VC and IPPM ratings.
SMBJ160A-M3/52 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ160A-M3/52 FAQ
1.How can I place an order for SMBJ160A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160A-M3/52 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 SMBJ160A-M3/52 reliable?
The price and inventory of SMBJ160A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ160A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160A-M3/52?
SMBJ160A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160A-M3/52 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 SMBJ160A-M3/52?
For technical support, including SMBJ160A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160A-M3/52 requirements.
6.How does Aetrix verify that SMBJ160A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ160A-M3/52 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 SMBJ160A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ160A-M3/52?
All SMBJ160A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160A-M3/52, 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 SMBJ160A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ160A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ160A-M3/52 Tags
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