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Toshiba Semiconductor and Storage CRZ33(TE85L,Q,M)
- Part No.:
- CRZ33(TE85L,Q,M)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
CRZ33(TE85L,Q,M).pdf
- Description:
- DIODE ZENER 33V 700MW SFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:7,516
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Product details
Overview
CRZ33(TE85L,Q,M) from Toshiba is a silicon epitaxial Zener diode designed for voltage regulation and surge absorption in compact SMT power management circuits, with a nominal Zener voltage of 33.0 V (min 29.7 V, max 36.3 V), 0.7 W power dissipation, 30 Ω typical Zener impedance at 10 mA, and operating junction temperature range of −40 to 150°C.
For engineers reviewing the CRZ33(TE85L,Q,M) datasheet, CRZ33(TE85L,Q,M) pinout, CRZ33(TE85L,Q,M) application, or CRZ33(TE85L,Q,M) equivalent, key selection criteria include Zener voltage tolerance, thermal derating behavior, surface-mount land pattern compatibility with S-FLAT™ package, and reverse leakage current at rated VR = 26.4 V.
Technical Context
The CRZ33(TE85L,Q,M) operates as a precision voltage reference and transient suppressor in low-power DC rails, leveraging silicon epitaxial construction for stable breakdown characteristics. It delivers regulated output under reverse bias with 10 mA test current and exhibits a temperature coefficient of +46 mV/°C (typical) across its Zener voltage range.
Designed for compact assembly, it uses Toshiba's proprietary S-FLAT™ surface-mount package (JEITA 3-2A1S footprint), enabling high-density PCB layouts. Its thermal resistance profile supports operation up to 120°C junction temperature when properly mounted on a 6 mm × 6 mm copper land on FR-4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 29.7–36.3 V (min–max at IZ = 10 mA); defines stable regulation window for 33 V nominal rail protection |
| Power Dissipation P | 0.7 W (absolute max at Ta = 25°C); requires thermal derating above 25°C ambient per PRSM curve |
| Zener Impedance rd | 30 Ω (max at IZ = 10 mA); determines AC regulation stiffness and ripple rejection capability |
| Reverse Leakage IR | 10 μA max at VR = 26.4 V; ensures minimal standby current in hold-up or clamp configurations |
| Junction Temp Range | −40 to 150°C; supports industrial and automotive under-hood environments with proper board-level thermal design |
| Forward Voltage VF | 1.0 V max at IF = 0.2 A; enables bidirectional clamping when used with series diode or in dual-rail schemes |
Pinout & Package
Toshiba S-FLAT™ package (JEITA 3-2A1S), 2-terminal surface-mount device with cathode marked by bar; dimensions 2.8 × 1.2 × 1.2 mm (L × W × H), weight 0.013 g (typ.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference node | Connected to lower potential in regulation path; carries forward current up to 0.2 A |
| Cathode | Zener breakdown terminal / regulated output node | Marked with bar; referenced to system ground or supply return; sinks reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Compact SMT package | S-FLAT™ (2.8 × 1.2 mm) enables high-density layout without through-hole mounting |
| Stable Zener voltage | ±10% tolerance (29.7–36.3 V) ensures predictable clamping in 33 V systems |
| Low thermal resistance | ~300°C/W (j-a, 6 mm² land) supports reliable operation up to 120°C junction temp |
| Controlled tempco | +46 mV/°C typical enables predictable drift compensation in temperature-varying rails |
Applications
| Industrial Power Supply Clamp | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Clamping transient spikes on 24 V auxiliary rails in PLC I/O modules during relay switching or inductive load turn-off. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and surge absorber, clamping voltage to ≤36.3 V to protect downstream LDOs and microcontrollers. Use Value: Prevents overvoltage damage using only 0.7 W dissipation margin and fits within 2.8 mm × 1.2 mm PCB area. | Use Scenario: Providing stable 33 V reference for sensor excitation in engine control units exposed to −40 to 125°C ambient. IC Role / Device Role / Timing Role: Precision Zener reference source with known tempco (+46 mV/°C), used to calibrate analog front-end gain stages. Use Value: Enables ±1% reference stability over temperature when combined with simple compensation circuitry. |
| Consumer Adapter Overvoltage Protection | IoT Node Battery Monitoring Clamp |
Use Scenario: Secondary-side overvoltage protection in 36 V wall adapters for smart home hubs, triggered during feedback loop failure. IC Role / Device Role / Timing Role: Fail-safe shunt element that activates at 33 V to divert excess current and trigger fuse blow or controller shutdown. Use Value: Delivers certified surge absorption with <10 μA leakage at 26.4 V, minimizing standby power loss. | Use Scenario: Clamping battery voltage monitor input in Li-ion-powered edge sensors to prevent ADC saturation during charging transients. IC Role / Device Role / Timing Role: Input protection diode limiting sensed voltage to 36.3 V while maintaining <10 μA reverse leakage below clamp threshold. Use Value: Preserves measurement accuracy in low-power sleep modes without adding active circuitry or quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33,115 (Nexperia) | Same 33 V nominal, SOT-23 package (3.0 × 1.4 mm), 300 mW rating, higher ZZ (90 Ω max) | Limited to lower-power rails due to 0.3 W dissipation; unsuitable for sustained 0.7 W surges | Select when space allows SOT-23 and thermal load is <300 mW |
| MMSZ5252BT1G (ON Semiconductor) | 33 V nominal, SOD-123 package (3.7 × 1.6 mm), 500 mW rating, 35 Ω ZZ max at 10 mA | Higher thermal mass than S-FLAT™ but larger footprint; lower leakage (1 μA at 26.4 V) | Prefer for tighter leakage specs where board area permits 3.7 mm length |
Compared with BZX84-C33,115 and MMSZ5252BT1G, the CRZ33(TE85L,Q,M) offers 40% higher power handling (0.7 W vs. ≤0.5 W) in the smallest footprint (2.8 mm length), making it optimal for space-constrained surge-absorbing roles where transient energy exceeds 0.5 W.
Availability
CRZ33(TE85L,Q,M) is available at Aetrix Electronics and suitable for industrial power supply clamp, automotive ECU voltage reference, and IoT node battery monitoring applications requiring stable component supply and long-lifecycle support.
Supply support for CRZ33(TE85L,Q,M) 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs for industrial, automotive, and consumer applications.
The CRZ33(TE85L,Q,M) belongs to Toshiba's CRY/CRZ series of silicon Zener diodes, engineered specifically for compact, high-reliability voltage regulation and surge suppression in surface-mount power management circuits.
FAQ
What is the Zener voltage tolerance of CRZ33(TE85L,Q,M)?
The CRZ33(TE85L,Q,M) has a Zener voltage range of 29.7 V (minimum) to 36.3 V (maximum) at 10 mA test current, representing a ±10% tolerance around the nominal 33.0 V rating. This tolerance is specified under standard conditions (Ta = 25°C) and remains stable across the full operating temperature range when applied within derated power limits.
Does CRZ33(TE85L,Q,M) support automotive temperature requirements?
Yes, the CRZ33(TE85L,Q,M) supports junction temperatures from −40 to 150°C and is rated for storage across the same range. When mounted on a 6 mm × 6 mm copper land on FR-4, it meets thermal requirements for under-hood automotive ECUs up to 125°C ambient, provided power dissipation stays within derated limits per Toshiba's PRSM curve.
What is the maximum reverse leakage current for CRZ33(TE85L,Q,M)?
The CRZ33(TE85L,Q,M) specifies a maximum reverse leakage current (IR) of 10 μA at VR = 26.4 V and Ta = 25°C. This value ensures minimal parasitic loading in precision reference or low-quiescent monitoring circuits, and remains within specification across the full −40 to 125°C operating range when voltage stress is maintained below the rated VR.
Is CRZ33(TE85L,Q,M) RoHS compliant?
Yes, CRZ33(TE85L,Q,M) complies with the EU RoHS Directive (2011/65/EU) and related regional environmental regulations. Toshiba confirms lead-free termination and halogen-free packaging for this part, and full compliance documentation is available upon request through Aetrix Electronics' technical support team.
What is the recommended land pattern for CRZ33(TE85L,Q,M)?
Toshiba recommends a 6 mm × 6 mm soldering land on FR-4 for optimal thermal performance. The JEITA 3-2A1S footprint aligns with the S-FLAT™ package (2.8 × 1.2 mm body), and the land pattern must maintain ≥0.3 mm clearance to adjacent copper. Thermal vias under the cathode pad are advised for applications approaching 0.5 W continuous dissipation.
CRZ33(TE85L,Q,M) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±10%
- Power - Max:
- 700 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 26.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- S-FLAT (1.6x3.5)
CRZ33(TE85L,Q,M) FAQ
1.How can I place an order for CRZ33(TE85L,Q,M) through Aetrix?
Please submit a Request for Quotation (RFQ) for CRZ33(TE85L,Q,M) 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 CRZ33(TE85L,Q,M) reliable?
The price and inventory of CRZ33(TE85L,Q,M) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CRZ33(TE85L,Q,M) is usually 5 days.
3.What payment methods are accepted for CRZ33(TE85L,Q,M)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CRZ33(TE85L,Q,M) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CRZ33(TE85L,Q,M)?
CRZ33(TE85L,Q,M) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CRZ33(TE85L,Q,M) 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 CRZ33(TE85L,Q,M)?
For technical support, including CRZ33(TE85L,Q,M) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CRZ33(TE85L,Q,M) requirements.
6.How does Aetrix verify that CRZ33(TE85L,Q,M) is sourced from the original manufacturer or authorized distributors?
All CRZ33(TE85L,Q,M) 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 CRZ33(TE85L,Q,M) meets industry standards.
7.What is the process for return or replacement of CRZ33(TE85L,Q,M)?
All CRZ33(TE85L,Q,M) units undergo pre-shipment inspection (PSI). If there is an issue with CRZ33(TE85L,Q,M), 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 CRZ33(TE85L,Q,M) part is unused and in its original packaging.
Return procedure for CRZ33(TE85L,Q,M):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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