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Taiwan Semiconductor Corporation SMDJ100A
- Part No.:
- SMDJ100A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ100A.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,805
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Product details
Overview
SMDJ100A from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with a 100V working stand-off voltage (VWM), 111–123V breakdown voltage (VBR), and 162V maximum clamping voltage (VC@IPPM). It features sub-1ps response time, DO-214AB (SMC) package, and is rated for automotive-grade transients per ISO 7637-2 Pulse 1/2a/2b/3a/3b in industrial power rail protection.
For engineers reviewing the SMDJ100A datasheet, SMDJ100A pinout, SMDJ100A application, or SMDJ100A equivalent, key selection criteria include its 18.5A peak pulse current (IPPM), 175°C junction temperature rating, 75°C/W junction-to-ambient thermal resistance, and unidirectional polarity marking-critical for DC bus ESD and load-dump suppression in telecom and automotive ECUs.
Technical Context
The SMDJ100A operates as a silicon avalanche diode optimized for high-energy transient suppression on DC power lines. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1µA @ 100V), while the DO-214AB package enables automated placement and meets JESD201 Class 2 whisker resistance.
It delivers 3000W peak pulse power (10/1000µs waveform) with clamping performance validated at 162V under 18.5A surge, and supports steady-state dissipation up to 6.5W at 25°C ambient-derated linearly above that per the published thermal curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before conduction begins; sets DC rail margin for 12V–48V systems. |
| VBR @ IT=1mA | 111–123 V - Breakdown voltage range defining reliable avalanche onset; ±5% tolerance ensures predictable clamping threshold. |
| VC @ IPPM=18.5A | 162 V - Clamped voltage during 10/1000µs surge; determines maximum stress on downstream ICs. |
| PPK | 3000 W - Peak pulse power handling capability; validates robustness against ISO 7637-2 Pulse 5a (load dump). |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs PCB copper area requirements for sustained 6.5W operation. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, 0.290g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; defines current flow direction during clamping. |
| Cathode | High-side transient sink | Connected to protected line (e.g., 12V rail); carries full surge current into ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-1ps response time | Enables suppression of fast ESD events (IEC 61000-4-2) before sensitive logic is damaged. |
| Glass-passivated junction | Ensures long-term VBR stability and low parametric drift across temperature and lifetime. |
| ISO 7637-2 compliance | Validated for automotive load-dump (Pulse 5a), switching transients (Pulse 1/2a/2b), and coupling noise (Pulse 3a/3b). |
| J-STD-020 Level 1 moisture sensitivity | Permits standard reflow without baking; eliminates production delays and moisture-related popcorning. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Power Input Stage |
|---|---|
Use Scenario: Protecting 12V supply rails in BCMs from alternator load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and primary DC-DC converter input. Use Value: Limits transient voltage to ≤162V, preventing damage to 36V-rated input capacitors and controller ICs during 120V/50ms load dump events. | Use Scenario: Safeguarding 24V DC inputs of programmable logic controllers against field-wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on DIN-rail mounted power entry module. Use Value: Absorbs 3000W pulses without degradation, maintaining system uptime in factory-floor environments with frequent motor contactor switching. |
| Telecom Remote Radio Unit (RRU) | Consumer Set-Top Box Power Supply |
Use Scenario: Shielding outdoor RRU power interfaces from lightning-induced surges on PoE or DC feeder lines. IC Role / Device Role / Timing Role: First-line defense on 48V DC input, upstream of DC-DC converters and PMICs. Use Value: Clamps 10/1000µs surges to 162V within 1ps, preserving RF front-end IC integrity during Category C2/C3 surge events. | Use Scenario: Securing 12V standby and main power rails in cable/satellite STBs against ESD and AC line coupling transients. IC Role / Device Role / Timing Role: Secondary-level TVS on internal DC distribution net, after primary AC-DC stage filtering. Use Value: Provides <1µA leakage at 100V, eliminating standby current penalty while enabling IEC 61000-4-2 Level 4 (8kV contact) 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 |
|---|---|---|---|
| SAC100A (Littelfuse) | Same 100V VWM, but 165V VC @ 18.2A; slightly higher clamping voltage and lower PPK (2500W). | Approved for UL 497B telecom surge protection; less common in automotive due to non-ISO 7637-2 validation. | Preferred where UL 497B compliance is mandatory and clamping margin allows 3V higher VC. |
| 1.5KE100A (ON Semiconductor) | Through-hole TO-218 package; identical VWM/VBR/VC specs but 1.5kW PPK; not surface-mountable. | Used in legacy designs with through-hole assembly; unsuitable for high-density SMT layouts. | Select only when board rework prohibits SMT adoption or thermal mass requirements favor through-hole mounting. |
Compared with SAC100A and 1.5KE100A, the SMDJ100A offers superior 3000W surge capacity in an SMT-optimized DO-214AB package with verified ISO 7637-2 compliance-making it the preferred choice for new automotive and industrial designs requiring high-reliability, high-density transient suppression.
Availability
SMDJ100A is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC power inputs, and telecom remote radio units requiring stable component supply and full traceability.
Supply support for SMDJ100A 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including TVS diodes, rectifiers, and MOSFETs.
The SMDJ series is designed specifically for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding ISO 7637-2 and IEC 61000-4-5 compliance.
FAQ
What is the maximum clamping voltage of the SMDJ100A under a 10/1000µs surge?
The SMDJ100A has a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current of 18.5 A (10/1000µs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The SMDJ100A maintains this clamping performance consistently across its specified operating temperature range.
Is the SMDJ100A suitable for bidirectional transient suppression?
No-the SMDJ100A is a unidirectional TVS diode intended for DC line protection with defined anode/cathode polarity. For bidirectional applications, Taiwan Semiconductor specifies the SMDJ100CA variant (marked PGZC), which provides symmetrical clamping in both directions. Using the SMDJ100A in reverse-biased AC configurations may result in unintended conduction or failure.
What is the forward voltage drop of the SMDJ100A at 100A surge current?
The SMDJ100A exhibits a forward voltage (VF) of 5.0 V at 100 A peak forward surge current (8.3 ms half-sine wave), as confirmed in the Absolute Maximum Ratings table. This parameter applies only during unidirectional forward conduction events and is relevant for assessing power dissipation during extreme fault conditions.
Does the SMDJ100A meet RoHS and halogen-free requirements?
Yes-the SMDJ100A is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 solderability standards. These qualifications are documented in the official Taiwan Semiconductor datasheet revision I2104.
What is the moisture sensitivity level (MSL) of the SMDJ100A?
The SMDJ100A is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions (≤30°C/60% RH) and withstand standard reflow profiles-including Pb-free peak temperatures up to 260°C-without preconditioning or baking. This simplifies manufacturing logistics and reduces risk of popcorning during assembly.
SMDJ100A 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 18.5A
- 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)
SMDJ100A FAQ
1.How can I place an order for SMDJ100A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ100A 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 SMDJ100A reliable?
The price and inventory of SMDJ100A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ100A is usually 5 days.
3.What payment methods are accepted for SMDJ100A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ100A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ100A?
SMDJ100A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ100A 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 SMDJ100A?
For technical support, including SMDJ100A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ100A requirements.
6.How does Aetrix verify that SMDJ100A is sourced from the original manufacturer or authorized distributors?
All SMDJ100A 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 SMDJ100A meets industry standards.
7.What is the process for return or replacement of SMDJ100A?
All SMDJ100A units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ100A, 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 SMDJ100A part is unused and in its original packaging.
Return procedure for SMDJ100A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ100A Tags
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