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Alpha & Omega Semiconductor Inc. SMDJ100CA
- Part No.:
- SMDJ100CA
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ100CA.pdf
- Description:
- 1CH 100V BIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,298
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Product details
Overview
SMDJ100CA from Alpha & Omega Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in DC power lines and signal interfaces. It features 100 V reverse stand-off voltage (VRWM), 111–123 V breakdown voltage (VBR), 162 V maximum clamping voltage (VC) at 18.6 A peak pulse current, and 3000 W peak pulse power rating on 10/1000 µs waveform.
For engineers reviewing the SMDJ100CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, low thermal resistance (RθJL = 15 °C/W), JEDEC-compliant DO-214AB surface-mount package, and compliance with MSL Level 1 reflow profile (260 °C peak).
Technical Context
The SMDJ100CA operates as a bi-directional avalanche diode, providing symmetrical clamping in both polarities without requiring external polarity management. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low temperature coefficient (0.1% × VBR per °C ΔT).
Designed for non-repetitive surge events at ≤0.01% duty cycle, it delivers sub-1 ps response time from 0 V to breakdown and supports 300 A peak forward surge current (IFSM, 8.3 ms half-sine). Thermal performance is optimized via low RθJL (15 °C/W) when mounted on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 100 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1A | 111–123 V - Confirmed breakdown range ensures reliable triggering across manufacturing lot variation |
| VC @ IPPM | 162 V - Clamping voltage at 18.6 A limits downstream component stress during surge |
| PPPM (10/1000µs) | 3000 W - High energy absorption capacity for lightning-induced transients per IEC 61000-4-5 |
| TJ max | +150 °C - Enables operation in industrial ambient environments up to +125 °C with derating |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance supports sustained power dissipation in PCB-constrained layouts |
Pinout & Package
DO-214AB (SMC J-Bend) surface-mount package with molded plastic case and matte tin lead-free plating. Cathode identification via color band applies only to unidirectional variants; SMDJ100CA is bi-directional and has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Surge current path | Both terminals function identically - symmetrical clamping enables placement without orientation constraints |
| Case | Thermal conduction path | Plastic body transfers heat to PCB copper pads; no electrical connection to case |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term VBR stability and low leakage (<2 µA at VRWM) over temperature and lifetime |
| Built-in strain relief | Reduces mechanical stress at lead-to-body interface during thermal cycling and board flexure |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced popcorn failure |
| UL 94V-0 flammability | Self-extinguishing plastic housing meets safety requirements for enclosed industrial equipment |
| Low-profile SMC package | Height ≤2.6 mm enables use in space-constrained power supply and telecom modules |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 48 V DC input rails against induced surges from relay switching and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional TVS device placed directly at connector entry point to clamp common-mode and differential transients. Use Value: 162 V clamping voltage prevents overvoltage damage to upstream DC-DC controllers and downstream FET gate drivers. | Use Scenario: Surge suppression on -48 V telecom power distribution boards exposed to lightning coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on feed line prior to hot-swap controller and backup battery interface. Use Value: 3000 W peak power rating handles IEC 61000-4-5 Level 4 (4 kV line-earth) surges without degradation. |
| Automotive Body Control Modules | Renewable Energy Inverters |
Use Scenario: Protection of LIN bus power rails and sensor supply lines against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional clamping element on 12 V auxiliary rail shared by multiple ECUs. Use Value: Symmetrical response eliminates need for dual unidirectional devices, reducing BOM count and layout area. | Use Scenario: DC-link surge protection in solar string inverters subjected to grid-switching transients. IC Role / Device Role / Timing Role: Secondary clamping stage after MOVs, absorbing residual high-frequency energy. Use Value: Fast <1 ps response captures fast-rising edges missed by slower MOVs, improving overall system immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC100CA (Littelfuse) | Same DO-214AB package; VBR = 111–123 V, VC = 165 V, PPPM = 3000 W - 3 V higher clamping voltage | Identical IEC 61000-4-5 compliance; slightly higher clamping margin may reduce protection level for sensitive 100 V-rated components | Select when SAC100CA offers better regional availability or qualification history in automotive Tier-1 programs |
| 1.5KE100CA (ON Semiconductor) | Through-hole DO-15 package; same electrical specs but 3× higher RθJA (75 vs. 15 °C/W); no MSL1 rating | Not suitable for automated SMT assembly; requires wave solder or hand-solder; unsuitable for high-density or thermally constrained PCBs | Choose only for legacy through-hole designs where rework cost outweighs performance trade-offs |
Compared with SAC100CA and 1.5KE100CA, the SMDJ100CA provides superior thermal performance (RθJL = 15 °C/W) and full SMT compatibility (MSL1, 260 °C), making it optimal for high-reliability, high-density industrial and telecom power systems requiring repeatable reflow assembly.
Availability
SMDJ100CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, and renewable energy inverters requiring stable component supply, RoHS-compliant packaging, and traceable sourcing.
Supply support for SMDJ100CA 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, TVS diodes, and power ICs for industrial, computing, and consumer applications.
The SMDJ series is engineered for robust transient suppression in harsh electromagnetic environments, targeting DC power rail protection where high peak power, fast response, and surface-mount reliability are critical.
FAQ
What is the clamping voltage of the SMDJ100CA under a 10/1000 µs surge?
The SMDJ100CA exhibits a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current of 18.6 A on a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees predictable overvoltage limiting for downstream circuitry. The SMDJ100CA's clamping performance remains consistent across its operating temperature range (−55 °C to +150 °C), supporting design margining in industrial applications.
Is the SMDJ100CA unidirectional or bidirectional?
The SMDJ100CA is a bi-directional TVS diode, meaning it provides symmetrical clamping in both polarities - essential for protecting AC-coupled lines or floating DC rails where polarity reversal may occur. Unlike unidirectional variants (e.g., SMDJ100A), the SMDJ100CA has no cathode band and does not require orientation during placement. Its electrical characteristics apply equally in either direction, as confirmed in the "Devices for Bipolar Application" section of the datasheet.
What is the thermal resistance from junction to lead (RθJL) for the SMDJ100CA?
The SMDJ100CA has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This low value enables efficient heat transfer from the silicon die to the PCB, supporting reliable operation under repetitive surge conditions and elevated ambient temperatures. The SMDJ100CA's RθJL is significantly lower than through-hole alternatives like 1.5KE100CA, enhancing thermal robustness in compact SMT designs.
Does the SMDJ100CA meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, the SMDJ100CA meets MSL Level 1 per J-STD-020, allowing unlimited floor life and compatibility with standard lead-free reflow profiles peaking at 260 °C. Its DO-214AB package uses moisture-resistant molding compound and matte tin plating to prevent popcorning or delamination during assembly. This makes the SMDJ100CA suitable for high-volume automated manufacturing without baking or special handling - a key advantage over non-MSL-rated TVS diodes.
What is the maximum peak pulse current (IPPM) rating for the SMDJ100CA?
The SMDJ100CA is rated for a maximum peak pulse current (IPPM) of 18.6 A on the standardized 10/1000 µs double-exponential waveform. This value is derived directly from its 3000 W peak pulse power rating and 162 V clamping voltage (IPPM = PPPM / VC). The SMDJ100CA maintains this rating across its full operating temperature range and supports non-repetitive surge events at ≤0.01% duty cycle, as specified in the Absolute Maximum Ratings table.
SMDJ100CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- Power - Peak Pulse:
- 3000W (3kW)
- 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-214AB
SMDJ100CA FAQ
1.How can I place an order for SMDJ100CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ100CA 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 SMDJ100CA reliable?
The price and inventory of SMDJ100CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ100CA is usually 5 days.
3.What payment methods are accepted for SMDJ100CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ100CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ100CA?
SMDJ100CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ100CA 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 SMDJ100CA?
For technical support, including SMDJ100CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ100CA requirements.
6.How does Aetrix verify that SMDJ100CA is sourced from the original manufacturer or authorized distributors?
All SMDJ100CA 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 SMDJ100CA meets industry standards.
7.What is the process for return or replacement of SMDJ100CA?
All SMDJ100CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ100CA, 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 SMDJ100CA part is unused and in its original packaging.
Return procedure for SMDJ100CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ100CA Tags
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