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P4KE250 Transient Voltage Suppressor Equivalent & Substitute Parts
Part Overview
The P4KE250 is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) axial package, rated for 214V reverse standoff voltage with 400W peak pulse power handling. Manufactured by Littelfuse Inc., this component is classified as obsolete. Due to its obsolete status and limited inventory (826 pcs), identifying active equivalent parts from alternative manufacturers is necessary for design continuity and procurement reliability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P4KE250 |
| Manufacturer | Littelfuse Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Unidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 214V |
| Voltage - Breakdown (Min) | 225V |
| Voltage - Clamping (Max) @ Ipp | 361.2V |
| Current - Peak Pulse (10/1000µs) | 1.2A |
| Power - Peak Pulse | 400W |
| Operating Temperature Range | -55°C ~ 175°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | DO-204AL, DO-41, Axial |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the P4KE250 is determined by the following critical parameters:
- Reverse Standoff Voltage: 214V (Typ)
- Breakdown Voltage (Min): 225V or higher
- Clamping Voltage (Max) @ Ipp: Must not exceed 361.2V
- Peak Pulse Current: 1.2A nominal
- Peak Pulse Power: 400W
- Package Type: DO-204AL / DO-41 axial through-hole
- Unidirectional configuration: Single channel
- Operating Temperature: -55°C to 175°C minimum
All identified substitute parts maintain these electrical and mechanical specifications within the allowed tolerances. Substitutes are grouped by manufacturer and product status (active vs. obsolete).
Parameter Comparison
| Parameter | P4KE250 (Littelfuse) | P4KE250A (Taiwan Semi) | P4KE250A-E3/54 (Vishay) | P4KE250A-AP (MCC) | P4KE250A-BP (MCC) | P4KE250A-G (Comchip) | P4KE250A-TP (MCC) |
|---|---|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Taiwan Semiconductor | Vishay | Micro Commercial Co | Micro Commercial Co | Comchip Technology | Micro Commercial Co |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| Voltage - Reverse Standoff (Typ) | 214V | 214V | 214V | 214V | 214V | 214V | 214V |
| Voltage - Breakdown (Min) | 225V | 237V | 237V | 237V | 237V | 237V | 237V |
| Voltage - Clamping (Max) @ Ipp | 361.2V | 344V | 344V | 344V | 344V | 344V | 344V |
| Current - Peak Pulse (10/1000µs) | 1.2A | 1.2A | 1.2A | 1.2A | 1.2A | 1.16A | 1.2A |
| Power - Peak Pulse | 400W | 400W | 400W | 400W | 400W | 400W | 400W |
| Operating Temperature Range | -55°C ~ 175°C | -55°C ~ 175°C | -55°C ~ 175°C | -55°C ~ 175°C | -55°C ~ 175°C | -55°C ~ 150°C | -55°C ~ 175°C |
| Package / Case | DO-204AL, DO-41 | DO-204AL, DO-41 | DO-204AL, DO-41 | DO-41 | DO-41 | DO-41 | DO-41 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Not specified | Not specified | ROHS3 Compliant | Not specified |
| Inventory Status | 826 pcs | 3040 pcs | 778 pcs | 921 pcs | 728 pcs | 964 pcs | 3786 pcs |
Engineering Selection Recommendations
All substitute parts listed maintain electrical compatibility with the P4KE250 within the specified parameter tolerances. Selection should be based on the following criteria:
Active Product Status Priority: All substitute parts are classified as active products, ensuring long-term availability and manufacturing support compared to the obsolete P4KE250.
Clamping Voltage Improvement: Substitute parts feature a lower maximum clamping voltage (344V vs. 361.2V), providing enhanced transient suppression performance.
Temperature Range Consideration: P4KE250A-G (Comchip) operates to 150°C maximum junction temperature, compared to 175°C for all other alternatives. Applications requiring full -55°C to 175°C range should exclude this part.
Packaging Availability: P4KE250A (Taiwan Semiconductor) and P4KE250A-E3/54 (Vishay) are available in both DO-204AL and DO-41 packages. Micro Commercial Co variants (P4KE250A-AP, P4KE250A-BP, P4KE250A-TP) and Comchip P4KE250A-G are supplied in DO-41 package only.
Compliance Certification: P4KE250A (Taiwan Semiconductor), P4KE250A-E3/54 (Vishay), and P4KE250A-G (Comchip) carry ROHS3 compliance certification. MCC variants do not specify RoHS status in available documentation.
Inventory Availability: P4KE250A-TP (Micro Commercial Co) offers the highest stock level at 3786 pcs, followed by P4KE250A (Taiwan Semiconductor) at 3040 pcs.
Frequently Asked Questions (FAQ)
Q: Can P4KE250A-G (Comchip) be used in applications requiring -55°C to 175°C operation?
A: No. P4KE250A-G is rated to 150°C maximum junction temperature, which does not meet the full -55°C to 175°C operating range of the original P4KE250. Use alternative parts for full temperature range applications.
Q: Are the Micro Commercial Co variants (P4KE250A-AP, P4KE250A-BP, P4KE250A-TP) electrically identical?
A: Yes. All three MCC variants share identical electrical specifications: 214V reverse standoff, 237V minimum breakdown, 344V maximum clamping voltage, 1.2A peak pulse current, and 400W peak pulse power. Differences are limited to packaging format (all supplied as bulk) and inventory levels.
Q: What is the difference between P4KE250A and P4KE250A-E3/54?
A: Both parts are electrically identical with 214V standoff, 237V breakdown, and 344V clamping voltage. P4KE250A is manufactured by Taiwan Semiconductor Corporation, while P4KE250A-E3/54 is the Vishay General Semiconductor equivalent. The "-E3/54" suffix indicates Vishay's packaging and date code designation.
Q: Can I use P4KE250A in place of P4KE250 without circuit modification?
A: Yes. P4KE250A maintains the same reverse standoff voltage (214V), unidirectional configuration, DO-41 package, and through-hole mounting. The lower clamping voltage (344V vs. 361.2V) provides improved transient suppression without requiring circuit changes.
Q: Which substitute offers the best long-term availability?
A: P4KE250A (Taiwan Semiconductor) and P4KE250A-TP (Micro Commercial Co) are recommended for long-term procurement. Both are active products with high inventory levels (3040 pcs and 3786 pcs respectively) and full -55°C to 175°C operating range support.
Q: Are all substitutes ROHS3 compliant?
A: No. P4KE250A (Taiwan Semiconductor), P4KE250A-E3/54 (Vishay), and P4KE250A-G (Comchip) carry explicit ROHS3 compliance certification. Micro Commercial Co variants (P4KE250A-AP, P4KE250A-BP, P4KE250A-TP) do not specify RoHS status in available documentation. Verify compliance requirements with your procurement specifications.
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