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Taiwan Semiconductor Corporation SMDJ16CA
- Part No.:
- SMDJ16CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ16CA.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,555
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Product details
Overview
SMDJ16CA from Taiwan Semiconductor is a bidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 16 V, breakdown voltage range 17.8–19.7 V, and clamping voltage of 26.0 V at 115.4 A peak pulse current. It is designed for ESD and surge protection in DC power rails and signal lines of industrial control systems, automotive ECUs, and telecom interfaces.
For engineers reviewing the SMDJ16CA datasheet, SMDJ16CA pinout, SMDJ16CA application, or SMDJ16CA equivalent, key selection criteria include its DO-214AB (SMC) package, bidirectional configuration, 175 °C max junction temperature, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and 1.0 ps typical response time - all critical for robust transient immunity in high-reliability embedded designs.
Technical Context
The SMDJ16CA operates as a bidirectional avalanche diode, symmetrically clamping transients above ±17.8 V in both polarities. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 16 V), while the DO-214AB package provides low thermal resistance (RθJL = 15 °C/W) for effective power dissipation during 10/1000 µs surges.
It meets ISO 7637-2 test requirements for automotive load-dump and switching transients, with a peak pulse power rating of 3000 W at TA = 25 °C and derated linearly above that ambient. The device sustains 300 A non-repetitive forward surge (8.3 ms half-sine) and exhibits <1.0 ps intrinsic response - enabling protection of fast-edge digital and analog circuits before damage occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC bias margin. |
| VBR @ IT = 1 mA | 17.8–19.7 V - Measured breakdown threshold; ensures reliable triggering within specified tolerance band. |
| VC @ IPPM = 115.4 A | 26.0 V - Clamped voltage under 3000 W 10/1000 µs surge; determines maximum stress on protected ICs. |
| PPK | 3000 W - Peak pulse power handling per single transient; supports high-energy automotive and industrial surges. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial environments. |
| Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.11 × 6.22 mm footprint and 2.3 mm height; compatible with automated placement. |
| Response time | <1.0 ps - Intrinsic avalanche delay; ensures clamping activation prior to logic-level or analog circuit damage. |
Pinout & Package
DO-214AB (SMC) package: dual-leaded, molded plastic case with cathode band marking for unidirectional variants; SMDJ16CA is bidirectional and marked "DEP", with no polarity marking required - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during PCB layout. |
| Case / Body | Thermal path & mechanical anchor | Exposed copper pad area under center body aids heat transfer; requires minimum 25 mm² copper pour for RθJA optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift due to moisture or oxidation. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive battery-line transients including load dump, inductive switch-off, and coupling noise - no additional external filtering needed. |
| Moisture sensitivity level 1 (J-STD-020) | Zero bake requirement before reflow; supports standard SMT assembly without dry-pack or floor-life constraints. |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance mandates for industrial and consumer electronics export without material declaration overhead. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers against induced surges from relay coil flyback and nearby motor switching. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between field wiring and optocoupler input, limiting voltage to ≤26 V during 10/1000 µs transients. Use Value: Prevents optocoupler CTR degradation and microcontroller GPIO latch-up by holding rail stress below 30 V - validated per IEC 61000-4-5 Level 3. | Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in BCMs exposed to battery line transients per ISO 7637-2 Pulse 2b (load dump suppression). IC Role / Device Role / Timing Role: Primary surge clamp across VCC-GND rails upstream of LDO regulators, activated within <1 ps to limit overshoot. Use Value: Enables direct integration without series impedance or RC filters - maintains signal integrity on 20 kbps LIN while surviving 100 V/100 ms pulses. |
| Telecom Power Interface | Consumer Audio Equipment DC Rails |
Use Scenario: Shielding PoE-powered Ethernet switch ports from lightning-induced common-mode surges entering via RJ45 magnetics secondary side. IC Role / Device Role / Timing Role: Bidirectional TVS placed across +48 V and return after DC-DC isolation, clamping differential and common-mode spikes simultaneously. Use Value: Withstands 3000 W peak power without failure, reducing need for multi-stage protection and lowering BOM count by eliminating secondary MOVs. | Use Scenario: Securing 12 V and 5 V internal power rails in smart speakers against ESD events from USB-C hot-plug and front-panel button actuation. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) transient suppressor directly mounted at power entry points to IC regulators. Use Value: Delivers sub-26 V clamping at 115 A with no signal distortion - preserves audio DAC reference stability and prevents brownout resets during ±8 kV contact ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC16 | Same DO-214AB package, 3000 W rating, but VBR = 17.0–19.9 V and VC = 27.0 V at 113 A; slightly higher clamping voltage. | Marginally lower surge current handling (113 A vs. 115.4 A); suitable where 1.0 V clamping headroom is acceptable. | Select SAC16 if sourcing diversity is required and 27.0 V clamping remains within protected IC's absolute maximum rating. |
| SMCJ16CA | Identical electrical specs and DO-214AB package; manufactured by Vishay; same VWM/VBR/VC/PPK ratings and ISO 7637-2 compliance. | No functional or layout difference; fully interchangeable in existing designs with verified qualification data across automotive AEC-Q101. | Choose SMCJ16CA when dual-sourcing or long-term lifecycle assurance is prioritized - Vishay offers extended product longevity programs. |
Compared with SAC16 and SMCJ16CA, the SMDJ16CA delivers identical clamping performance at 26.0 V with marginally higher peak current capability (115.4 A), making it optimal for designs where transient energy margin is constrained. SMCJ16CA offers equivalent functionality with broader automotive qualification history, while SAC16 trades 1.0 V clamping headroom for alternate supply chain access.
Availability
SMDJ16CA is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power interface designs requiring stable component supply, consistent parametric performance, and full traceability through J-STD-020 Level 1 moisture handling.
Supply support for SMDJ16CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with ISO/TS 16949 and ISO 14001 certifications.
The SMDJ series is part of TSC's high-power surface-mount TVS platform, engineered specifically for automotive and industrial surge immunity where 3000 W pulse handling, ISO 7637-2 compliance, and DO-214AB manufacturability are mandatory.
FAQ
What is the maximum clamping voltage of the SMDJ16CA under a 3000 W transient?
The SMDJ16CA has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 115.4 A - corresponding to a 3000 W 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that downstream components see no more than 26.0 V during worst-case surge events, provided layout minimizes parasitic inductance. The SMDJ16CA achieves this with a tightly controlled avalanche junction and low-inductance DO-214AB package.
Is the SMDJ16CA unidirectional or bidirectional, and how does that affect PCB layout?
The SMDJ16CA is a bidirectional TVS diode, meaning it clamps transients of either polarity symmetrically - no anode/cathode orientation is required during placement. Unlike unidirectional variants (e.g., SMDJ16A), the SMDJ16CA uses a dual-junction structure marked "DEP" with no cathode band, allowing rotation-independent mounting. This simplifies PCB layout for AC-coupled or floating-rail applications such as telecom line protection or differential bus shielding, where polarity ambiguity exists.
Does the SMDJ16CA meet automotive transient immunity standards?
Yes, the SMDJ16CA meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b - covering key automotive transients including load dump, alternator ripple, and inductive switching noise. Its 3000 W peak power rating, 175 °C junction rating, and glass-passivated junction ensure reliability in under-hood environments. While not AEC-Q101 certified itself, the SMDJ16CA is widely used in automotive BCM and infotainment subsystems where system-level validation satisfies OEM requirements - confirmed by TSC's published test reports for the SMDJ family.
What is the thermal resistance from junction to lead (RθJL) for the SMDJ16CA, and why does it matter?
The SMDJ16CA has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, measured per JESD51-14. This low value enables efficient heat transfer from the silicon die to the PCB copper through the leads, critical during repetitive surge events or elevated ambient temperatures. For example, at 1 W steady-state dissipation, junction temperature rise above lead temperature is only 15 °C - supporting reliable operation in enclosed enclosures or near heat-generating components. Proper pad design (≥25 mm² copper per lead) is required to realize this spec.
Can the SMDJ16CA be used in place of the SMDJ16A in a new design?
No - the SMDJ16CA and SMDJ16A are functionally distinct: SMDJ16CA is bidirectional (suitable for AC or floating rails), while SMDJ16A is unidirectional (anode/cathode oriented, for DC rails with defined polarity). Substituting one for the other without verifying circuit topology risks failed clamping during negative transients (for SMDJ16A) or unnecessary cost (for SMDJ16CA in DC-only use). Always match the suffix: "A" = unidirectional, "CA" = bidirectional. The SMDJ16CA datasheet explicitly states "Electrical characteristics apply in both directions."
SMDJ16CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115.4A
- Power - Peak Pulse:
- 3000W (3kW)
- 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-214AB (SMC)
SMDJ16CA FAQ
1.How can I place an order for SMDJ16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ16CA 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 SMDJ16CA reliable?
The price and inventory of SMDJ16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ16CA is usually 5 days.
3.What payment methods are accepted for SMDJ16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ16CA?
SMDJ16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ16CA 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 SMDJ16CA?
For technical support, including SMDJ16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ16CA requirements.
6.How does Aetrix verify that SMDJ16CA is sourced from the original manufacturer or authorized distributors?
All SMDJ16CA 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 SMDJ16CA meets industry standards.
7.What is the process for return or replacement of SMDJ16CA?
All SMDJ16CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ16CA, 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 SMDJ16CA part is unused and in its original packaging.
Return procedure for SMDJ16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ16CA Tags
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