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Taiwan Semiconductor Corporation TLD8S36CAH
- Part No.:
- TLD8S36CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD8S36CAH.pdf
- Description:
- 6600W, 42.1V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,960
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Product details
Overview
TLD8S36CAH from Taiwan Semiconductor is a bidirectional automotive-grade transient voltage suppressor in DO-218AB package, with 36 V working stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 5 mA, 58.1 V clamping voltage (VC) at 114 A peak impulse current, and 6600 W peak pulse power (10/1000 µs). It protects 12 V/24 V automotive power rails against load dump and ISO 7637-2 surges.
For engineers reviewing the TLD8S36CAH datasheet, TLD8S36CAH pinout, TLD8S36CAH application, or TLD8S36CAH equivalent, key selection criteria include bidirectional surge capability, AEC-Q101 qualification, TJ = 175 °C operation, DO-218AB thermal performance (RθJC = 0.8 °C/W), and compliance with ISO 16750-2 and IEC 61000-4-2 Level 4.
Technical Context
The TLD8S36CAH implements a silicon avalanche diode structure optimized for high-energy transient suppression in automotive electrical systems. Its bidirectional configuration enables symmetrical clamping on both polarities, supporting robust protection in unregulated battery-fed circuits without polarity dependency.
It delivers 6600 W non-repetitive peak impulse power under 10/1000 µs waveform and sustains 5200 W under 10/10000 µs waveform, with thermal design validated for junction-to-case resistance of 0.8 °C/W when mounted to an ideal heatsink - enabling stable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36.0 V - Maximum continuous reverse operating voltage before significant leakage; sets system overvoltage trip threshold. |
| VBR (min/max) | 40.0 / 44.2 V at IT = 5 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | 58.1 V at 114 A (10/1000 µs) - Clamped voltage seen by protected circuit; defines worst-case stress on downstream components. |
| PPPM (10/1000 µs) | 6600 W - Peak surge energy handling capacity; meets ISO 7637-2 Pulse 5a load dump requirements. |
| TJ max | 175 °C - Enables under-hood deployment in engine control units and body electronics without derating. |
| RθJC | 0.8 °C/W - Quantifies thermal path efficiency; supports high-power dissipation with minimal case temperature rise. |
| αT | 0.091 %/°C - Temperature coefficient of VBR; allows accurate clamping voltage prediction across full operating range. |
Pinout & Package
Package: DO-218AB - Surface-mount molded plastic case per JEDEC DO-218AB (Issue C), UL 94V-0 rated, matte tin-plated leads, polarity marked by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during positive transients (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line (e.g., battery rail). |
| Cathode | Current entry point during negative transients (bidirectional) | Opposite terminal of symmetrical junction; connects to ground or reference plane; marked by band. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, UHAST, and ESD - eliminates qualification burden for Tier 1 suppliers. |
| Bidirectional surge suppression | Clamps both positive and negative transients symmetrically without external polarity management - simplifies PCB layout in floating or AC-coupled rails. |
| Junction passivation technology | Reduces surface leakage and improves long-term reliability under high humidity and temperature cycling - critical for 15+ year vehicle lifetimes. |
| ISO 7637-2 & ISO 16750-2 compliance | Tested to meet Pulse 5a (load dump) and other automotive surge profiles - reduces need for additional validation testing. |
| Moisture sensitivity level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates baking requirement prior to reflow soldering. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Interface |
|---|---|
Use Scenario: Protects microcontroller power supply from alternator load dump surges during battery disconnection. IC Role / Device Role / Timing Role: Primary bidirectional clamping device placed directly at ECU input connector. Use Value: Limits transient voltage to ≤58.1 V during 12 V system load dump events, preventing damage to 5 V/3.3 V LDOs and MCU I/O. | Use Scenario: Shields BCM power domain from jump-start spikes and relay-induced switching transients in door module networks. IC Role / Device Role / Timing Role: Standoff-rated TVS (36 V VWM) placed upstream of DC-DC converter input. Use Value: Absorbs 6600 W pulses without degradation, maintaining <10 µA leakage at 36 V to avoid quiescent current penalties. |
| ADAS Camera Power Rail | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Guards image sensor and SerDes IC power inputs against conducted noise from nearby high-current actuators. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp on 12 V camera module input, adjacent to filter capacitors. Use Value: Achieves <1 ns response time and 58.1 V clamping to preserve signal integrity and prevent pixel corruption during EMI bursts. | Use Scenario: Suppresses inductive kickback from H-bridge MOSFET switching and battery reversal events in EPS control units. IC Role / Device Role / Timing Role: High-energy TVS connected between motor supply rail and chassis ground. Use Value: Handles repetitive 10/10000 µs surges up to 5200 W while sustaining 175 °C junction temperature - avoids thermal runaway during extended steering maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Lower PPPM (400 W), smaller SMA package (RθJC ≈ 50 °C/W), VBR 40–44.4 V, same bidirectional DO-214AC form factor | Not suitable for load dump; limited to low-energy ESD and coupling transients in non-automotive systems | Select SMAJ36CA only for cost-sensitive consumer applications where 6600 W surge immunity is not required. |
| SMCJ36CA | Same DO-214AB package, 1500 W PPPM (10/1000 µs), VBR 40–44.4 V, RθJC ≈ 3.5 °C/W, AEC-Q101 not claimed | Lacks automotive qualification and thermal margin for sustained under-hood operation; requires larger heatsinking for equivalent energy handling | Choose SMCJ36CA for industrial controls with moderate surge exposure but no AEC-Q101 mandate. |
Compared with SMAJ36CA and SMCJ36CA, the TLD8S36CAH provides 4.4× and 4.4× higher peak pulse power respectively, certified AEC-Q101 reliability, and superior thermal resistance - making it the only option qualified for direct placement on automotive battery rails subject to ISO 7637-2 Pulse 5a.
Availability
TLD8S36CAH is available at Aetrix Electronics and suitable for automotive ECU protection, ADAS camera power conditioning, and electric power steering module design requiring stable component supply and long-lifecycle support.
Supply support for TLD8S36CAH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability power devices and protection components.
The TLD8SxxCAH series is part of TSC's AEC-Q101-qualified transient voltage suppressor family, engineered specifically for automotive battery rail protection against load dump, jump-start, and ISO 16750-2 surges.
FAQ
What is the polarity configuration of the TLD8S36CAH?
The TLD8S36CAH is a bidirectional transient voltage suppressor, meaning it clamps voltage transients of either polarity symmetrically across its terminals. Its marking code "TLD8S36A" and "CAH" suffix confirm bidirectional functionality, and the cathode band identifies one terminal - unlike unidirectional variants, both terminals behave identically under reverse and forward surge conditions.
Does the TLD8S36CAH meet AEC-Q101 requirements?
Yes, the TLD8S36CAH is explicitly qualified to AEC-Q101 standards, as documented in the official Taiwan Semiconductor datasheet (Version E2310). This includes stress testing for high-temperature operating life, temperature cycling, unbiased highly accelerated stress test, and electrostatic discharge - confirming suitability for automotive under-hood and chassis-mounted applications.
What is the maximum clamping voltage of the TLD8S36CAH at rated peak current?
The TLD8S36CAH has a maximum clamping voltage (VC) of 58.1 V when subjected to a 10/1000 µs waveform peak impulse current (IPPM) of 114 A. This value is measured per standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can the TLD8S36CAH be used in 48 V automotive systems?
No, the TLD8S36CAH is specified for 36 V working stand-off voltage (VWM) and is intended for 12 V and 24 V automotive systems. Its VWM of 36 V provides adequate margin above nominal 24 V rail peaks but does not support continuous operation on 48 V nominal systems - for 48 V architectures, TLD8S43CAH (VWM = 43 V) is the appropriate variant in the same family.
What is the thermal resistance from junction to case for the TLD8S36CAH?
The TLD8S36CAH has a typical junction-to-case thermal resistance (RθJC) of 0.8 °C/W, measured under ideal heatsink conditions. This low value reflects the DO-218AB package's enhanced thermal path and enables efficient heat transfer to the PCB copper pour or external heatsink - critical for sustaining repeated 6600 W surge events without exceeding TJ = 175 °C.
TLD8S36CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 114A
- Power - Peak Pulse:
- 6600W (6.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
TLD8S36CAH FAQ
1.How can I place an order for TLD8S36CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD8S36CAH 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 TLD8S36CAH reliable?
The price and inventory of TLD8S36CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD8S36CAH is usually 5 days.
3.What payment methods are accepted for TLD8S36CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD8S36CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD8S36CAH?
TLD8S36CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD8S36CAH 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 TLD8S36CAH?
For technical support, including TLD8S36CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD8S36CAH requirements.
6.How does Aetrix verify that TLD8S36CAH is sourced from the original manufacturer or authorized distributors?
All TLD8S36CAH 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 TLD8S36CAH meets industry standards.
7.What is the process for return or replacement of TLD8S36CAH?
All TLD8S36CAH units undergo pre-shipment inspection (PSI). If there is an issue with TLD8S36CAH, 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 TLD8S36CAH part is unused and in its original packaging.
Return procedure for TLD8S36CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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