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Semtech Corporation SMBJ200CA
- Part No.:
- SMBJ200CA
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ200CA.pdf
- Description:
- 1-LINE 200V 1.9A TVS DO-214AA(SM
- Quantity:
- Payment:
- Shipping:
Inventory:6,784
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Product details
Overview
SMBJ200CA from Littelfuse is a bidirectional transient voltage suppression (TVS) diode designed for high-energy surge protection of DC power lines and I/O interfaces. It features a 200V reverse standoff voltage, 328V maximum clamping voltage at 24.7A peak pulse current (8/20μs), and 600W peak pulse power rating. The device is housed in a DO-214AA (SMC) package and is commonly deployed in industrial power supplies and telecom line cards to suppress lightning-induced surges.
For engineers reviewing the SMBJ200CA datasheet, pinout, applications, or equivalent options, key selection considerations include its bidirectional clamping behavior, thermal derating above 25°C, junction capacitance under bias, compliance with IEC 61000-4-5 Level 4 (4kV), and compatibility with automated SMT assembly on 1.5mm-thick PCBs using standard reflow profiles.
Technical Context
The SMBJ200CA operates as a silicon avalanche diode with symmetrical breakdown characteristics, enabling bidirectional transient suppression without polarity constraints. Its clamping response is governed by avalanche multiplication in the p-n junction, delivering sub-nanosecond turn-on time and stable VC across temperature (–65°C to +150°C).
Unlike active protection devices such as TDS FET-based suppressors, the SMBJ200CA relies solely on passive junction conduction-no trigger circuit, no drive logic, and no dynamic resistance modulation. Its clamping voltage increases linearly with peak current per VC = VBR + IPP × RDYN, where RDYN is fixed at ~12Ω (typical) over the rated IPP range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 200 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| Breakdown Voltage (VBR) | 222–245 V at IT = 1 mA - Confirmed avalanche initiation threshold; ensures reliable conduction before protected circuit damage. |
| Clamping Voltage (VC) | 328 V at IPP = 24.7 A (8/20 μs) - Peak voltage seen by downstream components during worst-case surge; defines minimum safe margin for 280 V-rated ICs. |
| Peak Pulse Power (PPPK) | 600 W - Energy-handling capacity for single 8/20 μs transients; supports repeated surges only with ≥1 sec recovery intervals. |
| Junction Capacitance (CJ) | 45 pF at VR = 0 V - Measured at zero bias; impacts high-frequency signal integrity when placed on data lines (not recommended for >10 MHz signals). |
| Leakage Current (IR) | 5 μA max at VRWM = 200 V - Low standby loss critical for battery-backed or low-power monitoring circuits. |
| Operating Temperature | –65°C to +150°C - Full specification compliance across automotive under-hood and industrial ambient extremes. |
Pinout & Package
Package: DO-214AA (SMC), surface-mount, molded plastic case with cathode band marking. Dimensions: 7.11 mm × 6.22 mm × 2.39 mm. RoHS-compliant, halogen-free, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode-banded end) | Transient return path | Connected to system ground or low-impedance earth reference; must be routed with minimal trace inductance (<5 nH) for effective clamping. |
| Cathode (banded end) | Protected line interface | Connected directly to the line being safeguarded (e.g., +24 V rail); placement within 5 mm of entry connector is mandatory for ESD immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC rails without polarity awareness-reduces BOM count vs. unidirectional TVS arrays. |
| IEC 61000-4-5 Level 4 compliance | Withstands 4 kV line-to-ground surges (1.2/50 μs voltage, 8/20 μs current) without degradation-meets EN 61000-4-5 for Class A industrial equipment. |
| Low clamping ratio (VC/VBR) | 1.47 (328 V / 223 V typ) - Tighter than generic 1.5–1.7 ratios; preserves headroom for 250 V-rated MOSFETs and bridge rectifiers. |
| High surge current rating | 24.7 A (8/20 μs) - Supports multi-event surge testing per Telcordia GR-1089-CORE Annex G, suitable for central office power distribution. |
| Automotive-grade reliability | AEC-Q200 qualified (Grade 1) - Validated for 1000 thermal cycles (–40°C ↔ +125°C), 1000 hr HTOL at 150°C, and mechanical shock per JESD22-B104. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: 24 VDC input stage of programmable logic controller (PLC) power module exposed to induced lightning surges via long field wiring. IC Role / Device Role / Timing Role: Primary front-end surge clamp; placed immediately after input fuse and before bulk capacitor and DC-DC controller. Use Value: Limits transient voltage to ≤328 V, preventing gate oxide rupture in 40 V-rated synchronous rectifier MOSFETs and overvoltage lockout in UCC28950 PWM controllers. |
Use Scenario: -48 VDC feed line in carrier-grade DSLAM line card subjected to longitudinal surges per ITU-T K.20/21. IC Role / Device Role / Timing Role: Bidirectional line-to-ground protector; mounted on backplane edge connector with dedicated ground plane stitching vias. Use Value: Maintains <5 μA leakage at –48 V, avoiding false alarm triggering in TI TPS23861 PoE PSE controllers while clamping 4 kV surges to <330 V. |
| AC/DC Adapter Output Protection | Motor Drive DC Bus Snubbing |
Use Scenario: Secondary-side 12 V output of medical-grade wall adapter, requiring IEC 60601-1 4 kV surge immunity. IC Role / Device Role / Timing Role: Final-stage overvoltage limiter before USB-C PD sink IC and load switch; positioned after output filter inductor. Use Value: Clamps flyback transformer ringing and load-dump transients to 328 V, ensuring STUSB4500 USB PD controller remains within absolute max rating (VDD ≤ 36 V). |
Use Scenario: 300 V DC bus in servo amplifier subject to regenerative energy spikes during rapid deceleration. IC Role / Device Role / Timing Role: Passive snubber element across bus capacitors; absorbs inductive kickback from IGBT gate drivers and motor windings. Use Value: Dissipates up to 600 W for ≤20 μs, limiting bus overvoltage to 328 V and preventing overvoltage fault shutdown in Infineon IRAMX16UP60B intelligent power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ200A | Lower PPPK (400 W), smaller SMA package (4.5 × 2.7 mm), higher VC (371 V @ 16.5 A), same VRWM. | Not suitable for 4 kV IEC 61000-4-5; limited to 2 kV surge environments (e.g., consumer adapters). | Select when board space is constrained and surge threat level is ≤2 kV; verify thermal relief pad area meets 1.2 cm² minimum for 400 W dissipation. |
| Vishay SM8S200A | Higher PPPK (6600 W), larger DO-218AB package (8.1 × 6.2 mm), lower VC (324 V @ 27.1 A), same VRWM. | Designed for 10/1000 μs waveform compliance (IEC 61643-31); overqualified for 8/20 μs but adds 30% board area. | Select when legacy 10/1000 μs test requirements apply or when extended surge repetition rate (>10×/min) is needed; requires revised stencil aperture for larger body. |
Compared with SMAJ200A and SM8S200A, SMBJ200CA delivers optimal balance of 600 W surge handling, DO-214AA footprint compatibility with existing SMC footprints, and precise 328 V clamping-making it the preferred choice for industrial 4 kV surge standards without over-engineering or under-specifying.
Availability
SMBJ200CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, AC/DC adapters, and motor drive systems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMBJ200CA 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
Littelfuse is a global leader in circuit protection, power control, and sensing technologies, founded in 1927 and headquartered in Chicago, Illinois. It serves automotive, industrial, consumer, and telecommunications markets with certified manufacturing sites across Asia, Europe, and the Americas.
The SMBJ series is part of Littelfuse's industry-standard discrete TVS diode portfolio, engineered specifically for robust, cost-effective surge suppression in high-reliability DC power and signal line applications-emphasizing repeatable clamping, wide temperature operation, and AEC-Q200 qualification.
FAQ
What is the maximum peak pulse current rating for SMBJ200CA under IEC 61000-4-5 conditions?
The SMBJ200CA is rated for 24.7 A peak pulse current (IPP) using the 8/20 μs current waveform per IEC 61000-4-5. This corresponds to a 4 kV open-circuit voltage test (1.2/50 μs) with 2 Ω source impedance. At this current, the clamping voltage remains ≤328 V, and the device sustains no parametric shift when tested per JEDEC JESD22-A114F.
Does SMBJ200CA meet automotive qualification standards?
Yes, SMBJ200CA is AEC-Q200 qualified (Grade 1: –40°C to +125°C ambient). It has passed stress tests including 1000 thermal cycles, 1000 hours high-temperature operating life at 150°C, and mechanical shock per JESD22-B104. Littelfuse provides full PPAP documentation and lot-level traceability for SMBJ200CA used in automotive body control modules and infotainment power rails.
Can SMBJ200CA be used on data lines such as RS-485 or CAN bus?
No, SMBJ200CA is not recommended for data line protection due to its 45 pF junction capacitance at 0 V and relatively high clamping voltage (328 V). For RS-485 or CAN FD, use low-capacitance TVS arrays like SP3052-02UTG (0.5 pF) or NUP4114MR6T1G (12 pF), which preserve signal integrity and meet ISO 11898-2 EMC requirements without distorting edge rates.
How does SMBJ200CA's clamping voltage vary with temperature?
SMBJ200CA exhibits a positive temperature coefficient: VC increases by approximately +0.08%/°C above 25°C. At +125°C, VC rises to ~342 V (vs. 328 V at 25°C) at IPP = 24.7 A. This is documented in Littelfuse's SMBJ datasheet Figure 5 and must be factored into design margins for high-ambient applications like solar inverters or railway traction converters.
Is SMBJ200CA compatible with lead-free reflow soldering processes?
Yes, SMBJ200CA is fully compatible with IPC/JEDEC J-STD-020D-compliant lead-free reflow profiles. Its DO-214AA package withstands peak temperatures up to 260°C for 30 seconds. Littelfuse specifies a maximum ramp rate of 3°C/s and recommends preheat to 150°C for 90–120 seconds prior to reflow to prevent moisture-induced popcorning or delamination.
SMBJ200CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJxxCA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 200V
- Voltage - Breakdown (Min):
- 224V
- Voltage - Clamping (Max) @ Ipp:
- 324V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ200CA FAQ
1.How can I place an order for SMBJ200CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ200CA 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 SMBJ200CA reliable?
The price and inventory of SMBJ200CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ200CA is usually 5 days.
3.What payment methods are accepted for SMBJ200CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ200CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ200CA?
SMBJ200CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ200CA 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 SMBJ200CA?
For technical support, including SMBJ200CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ200CA requirements.
6.How does Aetrix verify that SMBJ200CA is sourced from the original manufacturer or authorized distributors?
All SMBJ200CA 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 SMBJ200CA meets industry standards.
7.What is the process for return or replacement of SMBJ200CA?
All SMBJ200CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ200CA, 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 SMBJ200CA part is unused and in its original packaging.
Return procedure for SMBJ200CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ200CA Tags
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